NASA Contractor Report 170415

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NASA-CR-170415 19860005236

Inve:~tigation of Seismicity arid Related Effects at NJ'SA Ames-Dryden Flight Research Facility, Computelr Center, Edwards, California Robert D. C:ousineau, Richard Crook, ,Jr., and David J. Leeds

Grant NCA2·0R283·304 November 1985

N~;I\ National Aeronautics and Space Administration

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NASA Contractor Heport 170415

----,------------------------,----------------------------------------

Invelstigation of Seismicity and Related Effects at NASA Ames-Dry~len Flight Research Facility, Com~puter Center, Edwards, California ---------_._----,---------------,-----------------------------------------Robert D. Cousineau, Richard Crook, Jr., and David J. Leeds Soils International, San Gabriel, California

Prepared for Ames Research CEmter Dryden Flight Research Facility Edwards, California in consortium with Harvey Mudd Collelge Pomona, California under Grant NCA2·0R283·304

1985

N"S/\ National Aeronautics and Space AdministraUon Ames Research Center

Dryden Flight Research Facility Edwards, California 93523

FOR.EWORD

This report was prepared under the general supervision of Mr. Karl F. Anderson

of NASA Ames Research Center, Dryden Flight Research Facility, Edwards, Cali­

fornia and Dr. B. Samuel Tanenbaum, Dean of Faculty, Harvey Mudd College,

Claremont, California, Collaborators in the investigation. The investigation

was sponsored by and technical direction and review was provided by Dr.

Kajal K. Gupta of NASA Ames Research Center, Dryden Flight Research Facility,

Edwards, California.

Principal investigators were Robert D. Cousineau, Civil Engineer and Principal

of Soils International of San Gabriel, California, Richard Crook, Jr.,

Geologist, and David J. Leeds, Engineering Seismologist.

The findings, conclusions and recommendations represent the professional

opinions of the principal investigators as indicated by their signatures

below.

The investigation was conducted in accordance with generally accepted engi­

neering and geologic procedures and, inthe opinion of the undersigned, the

accompanying report has been substantiated by mathematical data in confor­

mity with generally accepted principles of engineering and geological

professions and presents fairly the information set forth in the Interchange

for Joint Research, as modified by agreements between the coordinators and

the principal investigators.

Principal Investigators:

r( u1f~ ~D-04, r' Richard Crook, Jr. Engineering Geologist, EG 924

iii

David J. Leeds Engineering Geologist, EG 373 Geophysicist GP 17

1. INTRODUCTION/GENERAL

1,.1 Scope

1 .. 2 Location

2. GEOLOGY

2 .. 1 Regional Geology

CONTENTS

2 .. 2 Local and Site Geology

2.3 Regional Tectonics

2.4 Significant Faults

2.5 Fault Classification

2.6 Fault Rupture

2.7 Potential for Site Ground Failure

3. S[ISHOLOGY

3.,1 General

4.

5.

6.

3.2 Historical Seismicity

3.3 Significant Earthquakes

3.,4 Recurrence

SEISMIC CRITERIA

4.,1 ~1ethodology

4.2 Seismic Source Areas

4.3 Attenuation

4.4 Ground ~1o t ion

DESIGN ACCELEROGRAMS

RECOMMENDAT IONS FOR ~;EISMIC DESIGN

7 • RECOMMENDATIONS FOR FUTURE STUDIES

v

CRITERIA

3

3

8

12

13

23

25

25

27

27

29

35

37

39

39

39

40

40

45

49

50

8. REFERENCES

8.1 General Geology

8.2 General Seismology

APPENDICES

CONTENTS

(Contd.)

A. Plot Plan and Boring Logs

B. Seismic Scales

C. Accelerograms, Spectra, and Site Geology

vi

51

51

55

59

68

72

PLATES

1.1 Site Location Map

2.1 Regional Geologic Map

2.2 Geologic Map of a Portion of Edwards Air Force Base

2.3 Location of Major Faults in Southern California and Epicenters of Earthquakes, Magnitude 6.0 or Greater

2.4 Maximum Credible Rock Acceleration from Earthquakes

2.5 Earthquake Magnitude vs. Fault Rupture Length

2.6 Historic Fault Breaks

3.1 Earthquake Epicenters near Edwards AFB Magnitude 4.0, Greater

3.2 Earthquake Epicenters near Edwards AFB Magnitude 3.0, Greater

3.3 Earthquake Epicenters near Edwards AFB, All Events, 1932-83

4.1 Intensity vs. Magnitude and Epicentral Distance

4.2 Acceleration vs. MM Intensity, Near Field - Hard Site

4.3 Acceleration vs. MM Intensity, Far Field - Hard Site

TABLES

2.1 Selected Active and Potentially Active Faults

2.2 Fault Activity

3.1 Potential Ground Motion from Significant Faults

3.2 Earthquakes of Southern California - Historic

3.3 Earthquakes of Southern California - 1912-1984

4.1 Representative Ground Motions at NASA Edwards Facility

5.1 Accelerogram Data

vii

1. INTRODUCTION/GENERAL

This report provides criteria for seismic evaluation at con­

struction sites at the NASA Ames-Dryden Flight Research Facility

located at Edwards Air Force Base, Mojave Desert Area, Califor­

nia.

1.1 ~~ope

This geological and seismological investigation is based upon a

modest amount of field geological surveys, reviews of published

literature, earthquake catalogs and reports, and interviews

with professionals familiar with the area. Site soils and

foundation data are further supported by previous investigations

by others.· The results of the investigation are presented as

seismic design criteria, with design values of the pertinent

ground motion parameters, probability of recurrence, and recom­

mended analogous time-history accelerograms with their corres­

ponding spectra. The recommendations apply specifically to the

computer center site and should not be extrapolated to other

sites with varying foundation/geologic conditions or different

seismic environments.

1.2. Location

The project site lies in the west-central portion of the Mojave

Desert Province, California, approximately 17 miles southeast

of the town of Mojave (Plate 1.1). The NASA Dryden Facility and

Computer Center is on the west edge of Rogers Lake at the north

edge of the Air Force facilities on Edwards Air Force Base.

1

SITE LOCATION MAP Plate 1.1

2

2. GEOLOGY

2.1 ~_onal Geology

The Mojave Desert Province (see Regional Geologic Map, Plate 2.1,

is a triangular-shaped block of regionally distinct geology

and geomorphology that, in the vicinity of the site, is bounded

on the north by the northeast-trending Garlock fault and on the

south by the southeast-trending San Andreas fault (Hewett, 1954).

In this region (Plate 2.1) the block is a plain that slopes gently

eastward to the town of Barstow. This plain is dotted with

numerOUEi isolated hills and scattered ridges and local mountain

masses all consisting of crystalline basement rock.

Parts of this plain are smooth rock surfaces with a sparse cover

of debris (pediments), but large parts are underlain by deep

fault-bounded subsurface valleys or basins filled with alluvium

and lake deposits (D. J. Ponti, oral communication, 1983). The

entire Mojave Desert Province is characterized by internal

drainage, hence several of the valleys and basins in this area

contain dry lakes or playas at their surface. Among the larger

of these are the nearby Rogers and Rosamond Lakes.

Rocks of the western Mojave Desert can be divided into three

main divisions: (1) crystalline rock of pre-Tertiary age;

(2) sedimentary and volcanic rocks of Tertiary age; and

(3) sediments of Quaternary age.

The crystalline rocks are largely plutonic and consist primar­

ily of quartz monzonite with a few large granite bodies and

small localized inclusions of hornblende diorite (Dibblee, 1967).

Near the regional, boundaries of the block, adjacent to the

San Andreas and Garlock faults, the plutonic rocks contain

small to large pendants (inclusions) of older metamorphic rocks.

3

,.,

EXPLA.NA.TION

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G t~;:.,~ 1"r ... ,u~'lOA 1nO .. ,,".'~hl •

.. U ......... " ............. ·I.' .. ".".'n"' .. '.I.H~' ........ "_' .... I .... .

~ ..... ~~. ~·_· .... --'--"'- .......... A ••• A ••

Thrust fault (BaTbs on UppeT plate; da..'1hed,where

approximately located, dotted where concealed)

REGIONAL GEOLOGIC MAP

Taken from Bakersfield, Los Angeles, San Bernardino 8 Trona

California Division Mines and Geology Map Sheets. CONTOUR INTERVAL 200 FEET

WITH SUPPLEMENTARY CONTOURS AT 100 FOOT INTERVALS

Plate 2.1

5

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

The sedimentary and volcanic rocks of Tertiary age include

conglomerates, sandstones, shales, chemical sediments, tuffs,

breccias and lava flows and plugs ranging in composition from

rhyolite to basalt. These rocks rest upon a deeply eroded

surface of the crystalline rock. With the exception of a

marine and brackish-water formation at the west end of the

region, all sedimentary units in this portion of the Mojave

Desert are non-marine, as· are the lava flows.

The Quaternary age sediments are mainly alluvial deposits that

fill the major depressions of this region. They range from

coarse fanglomerate to sand, silt and locally to fine clay.

In most places these sediments rest unconform~bly on rocks of

pre-Tertiary age. Locally these sediments are covered with a

thin veneer of wind blown sand. In the areas along the east

and south edges of Rogers and Rosamond Lakes this sand has been

deposited as dunes by the prevailing westerly winds.

Prior to and contemporaneous with the deposition of the Tertiary

age sediments the Mojave block was broken into a series of east­

trending basins and elevated blocks by faulting. On-going

deformation tilted, folded and faulted the Tertiary sediments~

The Quaternary deposits that cover the basins and lap onto the

eroded surface of Tertiary and pre-Tertiary rocks, in the ele­

vated areas, are themselves locally deformed in the same manner,

mostly near faults, but to a much lesser degree. This indicates

that tectonic deformation of the Mojave block has more or less

been continuous since the Mesozoic and has continued to the

present.

7

Most of this deformat~on has been caused by and is localized

along the major bounding faults and along the numerous north­

west-trending faults within the block. The types of faults

include a complete range: strike-slip (both right and left­

lateral); reverse or thrust; normal; and combined strike-slip/

reverse or strike-slip/normal.

2.2 Local and Site Geology

The NASA Dryden test facility is situated on a gently sloping

pediment that rises in a westerly direction for a distance of

approximately 6000 feet to a low north-trending ridge of

crystalline rock (Plate 2.2). The site is bounded on the east

by the Rogers Lake playa.

The pediment is developed on crystalline plutonic rock consis­

ting of quartz monzonite with local inclusions of hornblende

diorite, as exposed in the footing excavations for the NASA Data

Analysis Facility. Foundation investigations and previous

mapping (Dutcher, Bader and Hiltgen, 1962, and Appendix A) on

the site indicate that crystalline rock is within 0 to 7 feet

of the ground surface under some of the NASA installation.

However, logs of water wells both north and south of the site

(Dutcher, Bader and Hiltgen, 1962) i~dicate that the rock

surface slopes away from the site. Two and a half miles north

of the site the rock surface is at a depth gre<;lter than 200 feet,

and one and a half miles south of the site it is at a depth

of 90 to 125 feet. The configuration of this_surface is not

known in detail, therefore it may be deeper than 7 feet under

uninvestigated portions of the site.

8

I 30

EXPLANATION

Oya Younger alluvium

Oyf Younger fanglomerate

Ols Lake shore deposits

Op Playa deposits

6 Od Ods Dune sand I

000 Older alluvium

Oof Older fanglomerate

OOS Older dune sand

pT lJ undifferentiated basement complex 18 15 14 primarily quartz monzonite

------ geologic contact, approximate +

./Ittst ." ------'"0

fault, dotted where concealed --.. 20 21 22

...--23 arrows indicate relative horizontal

• displacement

i / ! ~ I ,

I 0 0.5 2 I :3

29 21 /26 '"""' ---I !

I

~ SCALE IN MILES

I

I Contour Interval 25 feet

'<ct: +

~ I GEOLOGIC MAP 32 33+ ,34

I 35 OF

PORTION OF

EDWARDS AIR FORCE BASE

PLATE 2.2

9

Foundation investigation reports (see References) prepared for

projects on the site indicate that the crystalline rock is

highly weathered to depths of 5 to 15 feet. See Appendix A for

typical borings. However,. high density values obtained for

this rock indicate that it is sufficiently coherent and com­

petent for structural foundations and should transmit seismic

energy without altering its "rock characteristics."

The surficial deposits overlying the crystalline rock on the

site have been mapped as alluvium (Dutcher, Bader and Hiltgen,

1962). Foundation investigation reports indicate that these

materials are predominantly moderately firm to firm, dense,

medium to fine-grained, silty sand with localized lenses of

clayey silt and gravel.

The rock surface drops eastward from the site beneath the

surface of Rogers Lake. Here the rock is overlain by playa

deposits consisting predominantly of clay, silt and fine sand.

There is no subsurface information as to the thickness of

these materials in the area of the site.

Although groundwater exists in the area, it generally is

found in the loose younger Quaternary deposits (Dutcher, Bader

and Hiltgen, 1962). Crystalline rock normally does not contain

much groundwater and none was encountered in any of the explora­

tory borings on the site (Appendix A).

Owing to the shallow surface gradient and small drainage area

the site should not experience runoff in quantities large

enough to cause flooding problems.

11

2.3 Regional Tectonics

The Mojave block is both bounded by and internally cut by faults

that have been active through the Pleistocene and into the

Holocene or last13,000 years (Sieh, 1978; Burke, 1978, 1979, and

1979a; California Division of Mines and Geology, 1963, 1965,

1969 and 1969a; Jennings, 1975; Ponti and Burke, 1980; Ponti,

Burke and Hede1, 1981; Clark, 1973; Ross, 1969; Dibblee,1961, 1967;

and Guptil and others, 1979). Analysis of the geometric con­

figuration, type and sense of displacements on these faults

indicate that the Mojaye block and adjacent regions have been

subjected to north-south compression and east-west extension

during this time. Additionally, seismic characteristics of

recorded earthquakes in the region suggest that these regional

stresses are still present.

This regional stress system has resulted in a consistent pattern

of right-lateral displacements on northwest-trending faults and

left-lateral displacements on northeast-trending faults. North

or east-trending faults in this system generally display normal

or reverse dip-slip displacements.

Whereas the two major bounding faults of the Mojave block, the

San Andreas and the Garlock, are characterized primarily by

strike-slip (horizontal) ~ovement, most of the -faults within

the block appear to accommodate regional stresses with a com­

bination of strike-slip and dip-slip movement (Jennings, 1975;

Cummings, 1981; Hill and others, 1980; Hill and Beeby, 1977).

This is characteristic of most of the smaller faults in the

vicinity of the site.

12

The regional stress pattern described above is the resultant

stress field derived from the relative movement of the Pacific

Plate (northwest relative motion) with regard to the North

American Plate (southeast relative motion). The boundary

between these plates is the San Andreas fault. The Garlock

is a primary conjugate fault to this system whereas the north­

west-trending interior faults are secondary conjugates of this

system.

Detailed mapping and trenching projects on the San Andreas

(Sieh, 1978) and Garlock (Burke, 1978) faults indicate that

the San Andreas has been nearly 10 times as active as the

Garlock during the last 14,000 years. Although similar

studies have not been carried out on the interior faults,

it is likely that activity on anyone fault of this group

is less than that of the Garlock by at least a similar amount

because the relief of stress in the Mojave block is most

likely distributed over many faults in this region (Cummings,

1981; Cummings and Leeds, 1977).

2.4 Significant Faults

The general pattern of faults in Southern California is well

illustrated in the figures presented in this section.

Plates 2.3 and 2.4 show the locations of the better known

faults and give an estimate of their maximum credible magni­

tude seismic events. These faults are detailed in Table 2.1

with the basis of classification indicated in the footnotes.

The actual basis for assignment of magnitude is based on

Bonilla's (1970) data: the relationship between fault length

(length of surface rupture) and earthquake magnitude is

depicted in Plate 2.5.

13

o '927 (7.5)

--~~~-::;::--"-

1812 (7.0!)0

LEGEND

O 1925 (6.3)

$ 1971 (6.4)

NOTE'

Fault along which historic Ilast 200 years) displacement has occurred.

Quoternary fault displacement (during past 2 million years), w',thout historic (approximately 200 years) record.

Epicenter, date and magnitude of pre -1933 earthquakes.

Epicenter, date and magnitude of post 1933 earthquakes.

2. Foult troces ore queried where continuation or ~xistence is uncertain.

3. Pre· auaternary faults (older than 2 million years) not shown.

4. Epicenter ~otion and mognitude of pre- 1933 earthquakes were estimated from historical records ond damage reports assIgned on IntenSity VII (Modified Mercoli scole) or greater.

. , \ \

, '-

\ ,

-~-

REFERENCES + I. Fault Map of California, California Geologic Data Map Series- Map No.1,

California Division of Mines and Geology, 1975.

2. Hileman, J. A., and others, 1973, Seismicity of Southern California Region, January I, 1932 to December 31, 1972, Seismological Laboratory, California .Institute of Technology, Contribution No. 2385.

3. Map of Major Earthquakes and Recently Active Faults ',n the Sauthern California Regian compiled by Richard J. Proctor, GEOLOGY, SEISMICITY, and ENVIRONMENTAL IMPACT, SpeCial Publication, Association of Engineering Geologists, October, 1973.

120'

::~ '~--- ~ -- ... _-------...

,~

\ , ,

117'

", \

+

117°

1947 (6.2i $

SAN DIEGO

LOCATION OF MAJOR FAULTS IN SOUTHt:.RN CALIFORNIA

AND EPICENTERS OF EARTHQUAKES OF

MAGNITUDE 6.0 OR GREATER

10 0 ewews

COUNTY

SCALE IN MILES 10 20

~ I

RIVERSIDE

30 40 50

COUNTY

-9-006 (6.5)

~o

PLATE 2.3 115°

15

LEGEND

POTENTIALLY ACTIVE FAULTS _---r--- .---? ? -'~E (c.:t:=- t ~

Approximately located

Number in porenthe'ses is the maximum expected earthquake magnitude tor the faull,

Lines ClOd arrows divide the Son Andreas fault into four tectonic sections.

Queries at the ends of a fault indicate lock of strong evidence for its activity,

20 I

40 60 80 " .... I I I

Unlll or. doclmal fraction. of thl accII.ratlon of gravity, from .2; 10.110

MAXIMUM CREDIBLE ROCK ACCELERATION FROM EARTHQUAKES Ref: Greensfe1der, CDMG MS 23, 1974 PLATE 2.4

17

Fault Maximum credible

earthquake magnitude

Owens Valley························· 8.25 Furnace Creek························ 8.25 San Andreas: "creep" section ......... 7 Rinconada ............•............... 7.5 Death Valley ......................... 7 Death Valley zone .................... 7 Panamint Valley ...................... 7.25 Kern Front ......................... ·· 6.25 Garlock .............................. 7.75 Whi te Wolf ........................... 7.75 Pleito ............................. - . 7 Bi g Pine ............................. 7.5 Santa Ynez ........................... 7.5 More Ranch ........................... 7·5 Oakridge ' ............................. 7.5 San Cayetano ............ ~ ............ 6.75 Simi ................................. 6.5 Northridge Hills ..................... 6.5 Santa Susana ......................... 6.5 San Fernando ......................... 6.5 Si erra Madre ......................•.. 6.5 Malibu-Santa llinica-Raymond Hill ..... 7.5 Cucamonga ............................ 6.5 San Andreas: central section ........ 8.25 Pinto Mount~n .................... , .. 7.5 Helendale ............................ 7.5 Lockhart ............................. 7.5 Lenwood .............................. 7.25 Old Woman Springs .................... 7 Johnson Valley ....................... 7 Camp Rock-Emerson ........... '.' ....... 7 Harper ............................... 7 Blackwater .............. .- ............ 7 Cali co-Newberry ...................... 7.25 Pisgah-Bullion .... ·.·.· ... ····· .. ····7.25 Manix ................................ 6.25 Ludlow ............................... 7.25 Other Mojave Desert faults, not

named on accompanying map .......... 6.25-7 Newport-Inglewood .......... ··········7 v.'hittier-Elsinore ........ ,' ............ 7.5 San Jacinto zone.···················· 7.5 Laguna Salada ......................... 7.25 Superstition Hills ................. ·.7 Imperial ........... , ................. 7 San Andreas: southern section ....... 7.5 Sand Hills··························· 7.5

L-___ ~_~,,_,~_,~.~~,~~.,._ •.• ~ .. « ..... ""_ •• ,.''' .... ___ • __ -

Fault activjty rating

1 ....... .

References I

1 ........ Brogan, -1971; Hooke, 1972 1, 2, 3·· Allen, 1968 4 ...... " Hart ~ 1969 4 ...... " Brogan, 1971 4 ........ Hooke, 1972 4 ........ Proctor, 1973 4 ......... Proctor, 1973 3, 4.:... Cl ark, 1972; Hileman et aZ., 1973 1,3····· California Division of Mines, 1955 4 ........ Crowell, 1968 l?, 5, 6 . .. Carman, 1964 5, 6····· Dibblee, 1966 2?, 4 ..... Sylvester, 1972 5, 6 .... . 5, 6 .. · .. 4 ........ Wentworth et aZ. , 1973 4 ........ Wentworth et al. 4 ........ Saul, 1971; Wentworth et aZ., 1973 1········ Kahle et al. , 1971; U.S.G.S., 1971 4 ........ Streitz, 1972; Proctor, 1973 4 ........ Went worth et aZ" 1973 4 ........ Morlan and Yerkes, 1974 ~ ........ Allen, 1968 4 ........ Proctor, 1973 4 ........ Proctor, 19:-3 4 ........ Proctor, 1973 4 ........ Proctor, 1973 4 ........ Proctor, 1973 4 ........ Proctor, 1973 4 ...... " Proctor, 1973 4 ........ Proctor, 1973 4 ........ Proctor, 1973 4 ........ Proctor, 1973 4 .. ···· .. Proctor, 1973 1 ...... " Allen, 1965 4 ........ Proctor, 1973

4 ........ Proctor, 1973 3,4,7·· Richter, 1958 4.· ... ··· Lamar, 1972; Mann, 1955 1,2,3" Hileman et aZ., 1971

1, 2···· . . Hileman et al. , 1971 1, 2, 3· . Hileman et al. , 1971 1······· . Hileman et aZ. , 1971 6······· .

tGeneral reference: Jennings. 1970 ~Fault names in quotes are not named in the literature but are assigned here as a matter of convenience.

31;;;: Surface rupture during a historic earthquake. '2 ~ Presently occurring creep. 3~ Alignment of earlhquake epicenters, 4;;;: Latc Oua\crnar) or Holocene displacement.

S = Quaternary displacement. . . 6= Representative fault in a seismicall) active tectoniC province.

7:;;; Possible source of a major historic earthquake.

SELECTED ACTIVE AND POTENTIALLY ACTIVE FAULTS

Ref: Greensfe1der, CDMG MS 23, 1974

18

TABLE 2.1

-- en ~

E "'0 QJO'l +-'c c· ....

0 0 J-I()

~-:::I+-' O+-'

~ ~ v/" u· .... 1114-.....

~ "'0 Q)

0 • 1\ > > ~\ \ III S-... +-':::1 ~ C U - ..... c \

\ \ oc .-\\

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1\ II 1\ 1\ 0 ::::> , \. \

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EARTHQUAKE MAGNITUDE

EARTHQUAKE MAGNITUDE VERSUS FAULT RUPTURE LENGTH

Ref:: Greensfelder, CDMG MS 23, 1974 (after Bonilla, 1970) PLATE 2.5

19

Guidance for our own selection of faults and fault character­

istics significant to the project was from sources such as

Greensfelder (1974), the various County and City Seismic

Safety Elements, project reports, Federal and State Geological

Surveys, and university publications plus other published and

unpublished technical material. An effort was made to be

consistent, weighing the recency of the source and the degree

of penetration of each study, utilizing personal knowledge,

but avoiding personal bias. Where documentation was deemed

necessary, reference is made in the text.

There are approximately 75 known historically active, active

or potentially active faults within 100 miles of Edwards Air

Force Base. Most of these lose significance with regard to

the site by being overshadowed by closer, longer or more

active faults. The faults that aTe considered to pose the

greatest threat to the site have been grouped as follows:

distant faults capable of generating large earthquakes; and

nearby faults capable of generating moderate size earthquakes.

These faults are discussed in the following sections.

2.4.1 Distant Faults

The major faults in the region that are of significance with

regard to shaking at the site are: the San Andreas; the Garlock;

the Sierra Nevada; the San Jacinto; the White Wolf; and the

San Gabriel. These faults range from 21 to 48 miles in distance

from the site. Although there are other major faults in the

sauthern California area they are not considered here because

they are either at greater distances from the site or considered

to be capable of generating only smaller events than the above

listed faults.

20

As can be seen, the San Andreas fault poses the greatest hazard

to the site from the standpoint of accelerations or shaking

intensity. This is probably the most documented, instrumented,

and studied fault in the world (Allen and others, 1965;

Wallace, 1983; Sieh, 1978; Kerr, 1984; and Ross, 1969).

Detailed geologic studies of the fault along with historical

records of the 1857 earthquake indicate that this fault is

likely to generate the largest earthquake of any fault in

southern California and that such an event is imminent and will

very likely occur during the life of the va~ious structures

at the site.

The Ga~lock fault is somewhat closer to the site than the San

Andreas and is also considered to be a major fault. However,

it is considered to be less of a hazard owing to the presumption

that it will generate lower magnitude earthquakes (Greensfelder,

1974), and that its recurrence rate is less than that of the

San Andreas by approximately a magnitude (Burke, 1979). It

'has not be~n active historically but abundant geomorphic and

geologic evidence indicate that it is active.

The Sierra Nevada fault is a major fault system at the base of

the Sierra Nevada range in Owens Valley. One of the largest

historic earthquakes in California occurred on it in 1872.

This system has also been active in this century north of the

1872 break. The southern portion, nearest to the site, has

not been historically active. On the theory that the Whole

system is equally active and that the southern portion is

presently a seismic gap, the next earthquake on this system

may occur on this segment (Wallace, 1983).

21

The San Jacinto fault is presently the most active fault in

southern California. It is a major strike-slip fault sub-

parallel to the San Andreas system. It has experienced seven

or eight earthquakes since 1890, the last being in 1968.

None of these events were greater than M=7. This, along with

the fact that the San Jacinto is 45 miles from the site

relegates it to a much lower hazard classification than the

three faults discussed above.

The White Wolf fault is a major reverse type fault 45 miles west

of the site. This fault experienced an M=7.2 earthquake in

1952.resulting in Modified Mercalli intensities at the site

of at least VI. The epicenter for this event was over 50 miles

from the site. A repeat of this event with a closer epicenter

could result in intensities at the site of VII. Hence this

fault is considered to present nearly as great a hazard to the

site as the San Andreas.

The San Gabriel fault is a large strike-slip fault that diverges

from the San Andreas system. This fault is 48 miles from the

site. This along with the fact that the maximum probable earth­

quake on this fault is M=5.5 relegate it to minor significance

with regard to the site.

2.4.2 Local Faults

As discussed previously, and shown on Figures 2.1 and 2,.3, the

Mojave block is cut by numerous northwest-trending faults.

Whereas these faults are considerably shorter than the previ­

ously discussed group, and hence not capable of generating as

large earthquakes, they are much closer to the site (3 to 12

miles). There is a paucity of data on this group of faults

although most seem to have some evidence of late-Pleistocene

22

movement putting them into the potentially active to active

category. There have been three earthquakes on faults in

this system in the last 40 years that have caused surface

displacements (Richter, 1958; Keaton and Keaton, 1977; Fuis,

1976; and Hill and others, 1980). These three faults are

over 50 miles from the site, hence are not significant to it,

but the Willow Springs-Rosamond fault has yielded fault gouge

dated at no older than 5,000 years (D. J. Ponti, oral

communication, 1983). This data on a fault only 12 miles

from the site (Plate 2.1) suggests that all of these faults

should probably be considered to be active unless a detailed

examination proves otherwise.

The suite of" faults of this grouping that we consider signi­

ficant to the site are: the Lockhart-Lenwood; the Mirage Valley;

the Blake Ranch; the Spring; the Willow Springs-Rosamond; and

the Muroc.

2.5 Fault Classification

No universally accepted system exists for the classification

of the activity of faults. The present report uses the follow­

ing classification, which is consistent with others as noted:

23

HA Historically Active

A Active

PA Potentially Active

I Inactive

Reasonably located and known to have produced earthquakes, or known to be undergoing creep, within the past 200 years. Consistent with AEG*, CDMG, WES, LNG.

Evidence of displacement in the Holocene (13,000 years), earth­quake epicenters in proximity, strong topographic expression. Consistent with CDMG, LNG.

Active in Quaternary (2,000,000 years), Quaternary materials offset, groundwater barriers, small earth­quake epicenters in proximity, geomorphic expression. Consistent with CDMG, LNG. Equivalent to "Capable" classification of NRC and WES.

No evidence of movement in Quater­nary, or no recognizable offset of Cenozoic materials. Consistent with AEG, CDMG, LNG. WES uses term "Dead" and further states "not seismically active."

*See References (Section 8)

TABLE 2.2

FAUL T ACTIVITY

24

2.6 fault Rupture

Fault rupture poses a threat to structures that cross active

faults. History of actual fault breaks at the ground surface

in southern California shows only eleven such breaks (Fig. 2.6).

In general, the locations of the surface breaks themselves

are largely unpredictable except for those along the largest

faults.

In summary, there are considerably more active and potentially

active faults than historic fault ruptures~ The latter occur­

rence is rare but merits consideration, particularly if

there are possibly serious consequences of the· break.

The likelihood of surface fault ~upture at the Edwards Air

Force Base NASA Dryden site is considered to be very remote.

However, it cannot be dismissed completely because it is not

presently known if any buried faults underlie the site which

may belong to the group of Mojave block faults. Another,

albeit low, risk is the possibility of sympathetic movement,

including fault rupture extending to the ground surface, of

these possible underlying faults in response to large motions

from a great earthquake on the San Andreas fault.

2.7 Potential for Site Ground Rupture

Because of the minimal amount of alluvium (2 to 7 feet) over­

lying the crystalline rock beneath the Computer Center site,

and the absence of groundwater, the likelihood of liquefaction

or lurching occurring in these materials is considered to be

remote.

Although no faults are known or shown on reviewed maps to cross

the site, the possibility exists, as suggested by seismic

activity, that certain of the small nearby faults may continue

subsurface toward the site.

25

19S0 Mammoth earthquake

Bokersfieldo County earthquake

121 0

r--"'-IS-5-7-F-or-t--1Teion earthquake ~~: ~~:""'d I '" _ _ _ Valley earthquake

,~O'bO'O ----= ' (~ / oLosAngeles

~~ ~ 11971 Son Fernando

N

r 119 0

0",="",,"-==--==_==--==100 Miles

0;.... __ -===~/O;.:;0;... __ ===~200 Kms

-- Fault break

HISTORIC

,

1956 San

FAULT BREAKS Allen et 01, 1955

Updated 1984

(SOUTHERN CALIFORNIA REGION)

PLATE 2.6

26

3. SEISMOLOGY

3.1 General

The seismicity of the southern California region is illustrated

in the tabulations and plots of several researchers, varying in

both time span and lower level of sensitivity. It is considered

necessary to examine the region through these different windows

to observe the sources of the larger events and local activity

of the smaller events.

Plate 2.3 shows the location of major faults and epicenters of

earthquakes of magnitude 6.0 or greater for the past two centur­

ies. The locations of the larger events can be seen to be

associated with the major faults of the region.

Bedrock acceleration associated with major faults is indicated

in Plate 2.4. A listing of these selected active and poten­

tially active faults is shown in Table 2.1.

Earthquake magnitude versus fault rupture length is depicted in

Plate 2.5.

The potential for ground motion at the site from earthquakes

generated on the various faults is given in Table 3.1.

The seismic parameters of magnitude and intensity (MM 31) are

defined in Appendix B.

27

POTENTIAL GROUND MOTION FROM SIGNIFICANT FAULTS

Dist. Activ Max.Credible Earthquake Max.Probable Earthquake

Fault to ity At EpieenteI At Site At Epieent e'" At Site Site Rate (mi) Mag- Int Int Aeeel Mag- Int Int Aceel

tni tude MMJl MMJl g * ri tudE MMJl MMJl g*

~·1AJOR REGIONA FAUI TS San Andreas 29 HA 8.5 XII XI 0.40 8.25 XII IX 0040

Garlock 21 A 7.75 X IX 0.40 7.0 VIII VI. 0.25

Sierra N eVrl.da 25 A 8.5 XII IX 0.40 7.5 IX VII 0,25 (south end)

San Jacinto 45 HA 7.75 X VII O.JO 6.5 IX IV 0015'

White Wolf 45 HA 7.75 X VII o.JO 7.25 IX VII OoJO

San Gabriel 48 PA 6.5 IX IV 0.15 5.5 VI III 0.10

MOJAVE BLOCK -FAUL S

Lockhart-Lenwood 20 A 7.5 X VII] 0.40 6.5 IX V 0.20

Mirage valley 9 A 6.5 IX VII O.JO 5.5 VI V 0.20

Blake Ranch 12 A 6.75 IX VI 0.25 5.5 VI V 0.20

Spring 12 A 6.75 IX VI 0.25 5.5 VI V 0.20

Willow Spring- VI 0.25 V 0.20 Rosamond 12 A 6.5 IX 5·5 VI

Muroe J.5 A 6.5 IX IX 0.40 5.5 VI VI 0.25

Note: Maximum Credible Earthquake (MCE) and Maximum Probable Earthquake (MPE) parameters are selected on the basis of pertinent published and unpublished literature, thoroughness of study of the source area, historical activity, fault length/magnitude relationships, fault mechanics, site geometry, and bias of our staff seismologists/ geologists. In simple terms, the MPE event is postulated to occur durin.g the project lifetime and should be considered an "operational" event. The MCE is potentially possible but unlikely during the project lifetime.

HA = Historically active fault; A = Active fault; PA = Potentially active fault.

*Acceleration at base rock. Values are average of J largest peaks.

TABLE 3.1

28

3.2 Historical Seismicitl

Earthquakes have been chronicled in California since the arrival

of the first Spaniards. Mission records have been used for the

early period; and systematic instrumental recorded dates from the

early days of the University of California in Berkeley (1888).

A continuous instrumental California record has been maintained

since that time. Southern California was a bit slower--begin-

ning its instrumental record in 1932 with Carnegie funding and,

more recently, with support of the U. S. Geological Survey.

This activity is centered at the California. Institute of Tech­

nology in Pasadena. Summary publication of coherent data has

been the contribution of the State (California Division of Mines

and Geology) and the Federal government (currently the U. S.

Geological Survey). Tables 3.2 and 3.3 summarize the larger

seismic events of interest, both historical and instrumental.

A piot of earthquake epicenters near the NASA Dryden facility

(Plate 3.1) shows all events of magnitude 4.0 and greater for

the period 1900 through 1983. Although published with data

through 1974, it has been updated through July 1983 with USGS

da ta.

Another pair of plots, Plate 3.2, shows this area with events

of magnitude 3.0 and above (1932 through 1983), and a plot of

the smaller western Mojave block area with all events for the

same time span regardless of magnitude. Note that Plate 3.1

(magnitude 4.0 and above) shows a blank for the area; Plate 3.2

shows some events with magnitudes of 3.0 or greater and ~~

events when the smallest instrumentally recorded activity is

plotted.

A plot of all events is also shown, Plate 3.3, enlarged to match

the scale of Plate 2.3. Thus, an overlay of Plate 3.3 on

Plate 2.3 indicates a low level of seismicity at the site,

associated with the named and unnamed faults.

29

EARTHQUAKES OF SOUTHERN CALIFORNIA - HISTORIC

DATE "INTENSITY MAGNITUDE LOCATION

1769 Jul 28 VIII-X 7.5 Olive

1852 Oct 26 8.0 North Los Angeles County

1852 Nov 9 IX Imperial Valley

1852 Nov 27-30 8.0 North Los Angeles County

1857 Jan 9 XI 7.7 Fort Tejon

1872 Mar 26 7.7 Owens Valley

1906 Apr 18 IX Imperial Valley'

EARTHQUAKES OF SOUTHERN CALIFORNIA - HISTORIC

TABLE 3.2

30

EARTHQUAKES OF SOUTHERN CALIFORNIA - lm--l~

MAGNITUDES 6.0 AND GREATER

TIME FELT DATE (PST) LAT. LONG. MAG. INT. AREA LOCATION

1915 ~run 22 19:59 32.8 J.1:;.5 6.25 VIII 50,000- Imperial Valley 100,000

1915 Sun 22 20:56 32.8 llS.5 6.25 VIII 50,000- Imperial Valley 100,000

1915 Nov 20 16:14 32 US 7.1 VII 120,000 Colorado Delta 1916 Oct 22' 18:44 34.9 UEI.9 6 VII 25,000- Tejon Pass

50,000 1918 Apr 21 14: 32 33.7 117 6.8 IX 130,000 San Jacinto 1923 Jul 22 23:30 34 117.2 6.25 VII 70,000 San Bernardino 1925 Jun 29 06:42 34.3 119.8 6.3 VIII-· Santa Barbara

IX 1927 Sep 17 18: 07 37.5 1.18.7 6 VII 75,000 Bishop 1933 Mar 10 17:54 33.6 118.0 6.3 IX 100,000 Long Beach 1934 Clec 30 05:52 32.2 115.5 6.5 IX 60,000 Colorado Delta 1934 Clec 31 10: 45 32 114.7 7.1* X 80,000 Colorado Delta 1935 reb 24 32.0 115.2 6.0 Colorado Delta 1937 Har 25 08:49 33.5 116.6 6.0 VII 30,000 Terwilliger Valley 1940 ~jay 18 20: 36 32.7 115.5 7.1" X 60,000+ Imperial Valley 1940 Dec 8 31. 7 115.1 6.0 Colorado Delta 1941 J'un 30 23:51 34.4 119.6 6.0 VIII 20,000 Santa Barbara 1942 Oct 21 08:22 33.0 116. a 6.5 VII. 35,000 Borrego Valley 1946 Mar 15 05:49 35.7 118.1 6.3 VIII 65,000 Walker Pass 1947 A.pr 10 07:58 35.0 116.6 6.2" VII 75,000 Manix 1943 Dec 4 15: 4 3 39.9 116.4 6.5 VII 65,000 Desert Hot Springs 1952 Jul 21 03:52 35.0 119.0 7.7* XI 160,000 Kern County 1952 Jul 22 23:53 35.0 118.8 6.4 VII Kern County 1952 Jul 23 05:17 35.2 118_ 8 6.1 VII Kern County 1952 Jul 28 23:03 35.4 118.9 6.1 VII Kern County 1954 Mar 19 01:54 33.3 116.2 6.2 VI 40,000 Santa Rosa Mountains 1954 Oct 24 31. 5 116.0 6.0 Agua Blanca 1954 Nov 12 04:26 31. 5 116 6.3 v+ Agua Blanca 1956 Feb 9 06:32 31. 8 115.9 6.8 VI+ 30,000+ San Miguel 1956 Feb 9 31. 7 115.9 6.1 San Miguel 1956 Feb 14 10:33 31. 5 115.9 6.3 V+ San Miguel 1956 Feb 14 17:20 31.5 115.9 6.4 V+ San Miguel 1966 Aug 7 09:36 31. 8 114.5 6.3 VI Gulf, California 1968 Apr 8 18:29 33.1 116.1 6.5* Borrego Mountains 1971 Feb 9 06:01 34.4 118.4 6.6* XI 80,000 San Fernando 1979 Oct 15 16: 27 32.6 115.3 6.6* X 60,000+ Imperial County 1980 Ma.y 25-27 37.6 118.8 6. J* VIII 100,000 Mammoth Lakes 1980 Jun 8 20:28 32.27 114.95 ~3 Weste= Arizona 198) lo'..<LY 2 16:42 36.22 120,,32 ~3* VIII Coa.1..1.nga

* Surfac:e faulting.

EARTHQUAKES OF SOUTHERN CALIFORNIA - 1912-1984

'fABLE 3.3

31

EARTHQUAKES EPICENTERS-NEAR EDWARDS AFB Magnitude 4.0 and Greater. 1900 through July 1983

Ref: CDMG. MS39, Updated. PLATE 3.1

32

() <:) . (~ ,-I ,-I

119

x

x

lIE

-A'

1<r

~~

\", '"

l 11B 117

ML < 3. 0 3. 0 < ML < 4. 0 4.0 < ML < 5. 0 S. 0 < ML < 6. 0 -ML > 6. 0 -

34

33

_ ... -- ... ----

-~ "'-.,

~~ 32

"

116 119 --

0 -, 0 -

~ , '"

liB

- -100

, , ,

~ ( I"~"~"~"~"~"~ '" o '\ '

c; _~

---

-.~

~.,

117 116

100 Miles

200 Kms

EARTHQUAKE EPICENTERS NEAR EDWARDS AFB Magnitude 3.0 & Greater, and All Events. 1932 through 1983

Ref: CIT 1984 PLATE 3.2

33

10 0 epMWS

SCALE IN MILES 10 20

~ I

50

EARTHQUAKE EPICENTERS NEAR EDWARDS AFB All Events, 1932 through 1983

Ref: CIT 1984

34

PLATE 3.3

3.3 Significant Earthquakes

An epicenter count of earthquakes within a 25 mile, 50 mile, and

100 mile radius of the NASA Dryden facility for the periods

indicated yields the following results:

Radius - miles Period of Magnitude 25 50 100 Observation

Less than 3.0 -l(- 1974-1983

3.0 to 3.9 0 1932-1983

4.0 to 4.9 a 120 510 1900-1983

5.0 to 5.9 0 12 80 1900-1983

6.0 to 6.9 0 2 15 1900-1983

7.0 or greater 0 0 1 1769-1983

The wider, 100 mile sweep includes the epicenter of the 1952

magnitude 7.2 Kern County earthquake. The two 6+ magnitude

events, each about 45 miles from the site, are the 1971 San

Fernando earthquake and an aftershock of the Kern County

1952 sequence.

Note that the 50 and 100 mile totals include events within the

smaller circles and the areas are each four times the size of

the next smaller circle. Thus, if seismicity were uniform,

the 50 miles radius column should list four times as many

events ~s the 25 miles column, and the 100 mile column 16 times

as many.

The lack of reported macroseismic activity near the site is

apparent from these numbers. It is even further highlighted

by examinati6n of activity within the entire western Mojave

block (Plate 3.1). For this purpose, the block is defined as

the region between the San Andreas and the Garlock faults west

*Slightly less than one shock per year with magnitude less than 3.0.

However, some of these may be quarry or mining blasts.

35

of about 50 miles east of the NASA Dryden facility. There are

limitations on the data. It is believed to be complete for

magnitude 4 events since the turn of the century, magnitude 3

since 1932, and magnitude 2.4 since 1974. Many smaller magni­

tude events are contained in the data and are included in our

examination. Some may be spurious, and some are quarry or

mining blasts that have not been edited out of the data.

The single magnitude 4.4 shock within the block was recorded

October 11, 1966 at 35.106 o N, 117.346 oW, 37 miles east-northeast

of the site. This is the only magnitude 4.0 or larger event

within the block for the period 1900-1983. It is the only event

within the range 3.0 or larger recorded for the period 1932-1983.

However, small events with magnitudes less than 3.0 have been

recorded,at a rate of approximately four per year in this same

period (1932-1983). As indicated, some of these may be spurious

or quarry blasts. This phase of the investigation bears further

study. One of these small events occurred practically on site

October 14, 1942 with a magnitude of 2.5 at 35.0 o N, 118.0o W.

The quality of the determination was not good, fixed at ±15 km

of the location noted.

The larger events are distant from the site and along koown faults,

such as the 1952 Kern County earthquake to the northwest 2nd 1971

San Fernando earthquake to the southwest, and their associated

aftershocks. These are the largest events within the past

century to affect the site; statistically, their many after­

shocks account for a large portion of the seismic activity.

The 1852 and 1857 earthquakes, although outside the time span

considered, were undoubtedly more significant to the site.

36

It should be borne in mind that epicentral determinations are

imprecism, particularly on the smaller and older events. The

circle of error probability is seldom noted but can vary from

a few kilometers for the well located events to as much as

0.5 0 for the older, noninstrumentally recorded events. The

quality of epicentral determination has increased dramatically

over the past years, especially in this area, with the support

of the U. S. Geological Survey. The definition of epicenter

should also be remembered, i.e., that point on the surface

of the earth that lies above the hypocenter (first starting

break along the fault plane surface, at depth). The epicenter

is not the center of energy release; the hypocenter is merely

the starting point of the fault rupture on its plane.

3.5 Recurrence

Recurrence of seismic activity along the several capable nearby

faults has been studied, and a range of recurrence rates pub­

lished. There is an overwhelming opinion among seismologists

and geologists that have studied the area that a very large

magnitude earthquake on the San Andreas fault is imminent.

That could mean one week, one month, or 10 years, but certainly

in the foreseeable future. Specific return periods along ~he

San Andreas vary from 80 to 160 years. Since there has not

been a major San Andreas event in Southern California in over

a century, the consensus is that the fault is ready to "let go."

The "favored" section for a San Andreas break is the reach between

San Bernardino to the west of Taft. Since the break will probably

be at least 250 miles long, this places the nearest San Andreas

energy source 29 miles southwest of the site, with a recurrence

period that is moot. The event is so long overdue, and indi­

cations so ominous, that consideration of a recurrence period

37

is an unnecessary exercise. The event must be considered short­

term. The only question at the moment is when. The magnitude

should be the same as other great San Andreas events, 8+.

A 50 percent probability within 5 years has been stated.

Recurrence of the 1952 Kern County event is difficult to assess.

That event was large, magnitude 7.2, and the location unexpected.

There is some indication that its recurrence rate is 150 years

or more. An epicenter on the White Wolf fault at about 45 miles

lessens the impact upon the site.

The unusual lack of events that might have an effect on the site

makes any averaging of activity meaningless. The nearby segment

of the San Andreas has been inactive for more than a century;

the nearby segment of the Garlock has had no events as large as

magnitude 4.0; events within the Mojave block are alISO miles

or more east of the site; the western Mojave block is almost

aseismic. These factors control the selection of design events

but preclude meaningful statistical seismicity.

In summary, a great San Andreas magnitude 8+ event is imminent;

local nearby events would be unexpected but could be magni­

tude 4.5 to 5.5.

38

4. SEISMIC CRITERIA

4.1 Methodology

Seismic criteria for the NASA Dryden facility site at Edwards

Air Force Base have been developed by using a multistep method,

as follows:

1. Definition of seismic zones, faults, or source areas

2. Development or selection of site or region specific

attenuation characteristics.

3. Calculation of site ground motions (acceleration,

velocity, displacement, and duration)

4. Selection of analogous time-histories and response

spectra, along with their scale factors.

4.2 Seismic Source Areas

The site is exposed to seismic ground motion from earthquakes

originating in three principal source areas:

Source I

Source II

Source III

San Andreas Fault Zone - A source of great

historical seismic activity. The recurrence

of magnitude 8+ event along this fault at its

nearest approach to the site (29 miles) is

postulated as a design event.

Mojave Block Fault Group - The occurrence of

a moderate magnitude event nearby is a remote

possibility despite the historic absence of

events larger than magnitude 4.4.

The effect of the more distant or less active

faults is enveloped in the two above design

events, or source areas.

39

4.3 Attenuation

Site ground motion can be determined by attenuating maximum

epicentral source region ground motion to the appropriate

distance. A number of attenuation curves have been developed

from worldwide and regional studies of isoseismal maps. Data

from western United States earthquakes have been plotted by

Krinitzsky and Chang, 1975 (Plate 4.1) relating intensity to

distance for a range of earthquake magnitudes. Note the very

wide scatter of the data. Acceleration is related to distance

in an unpublished study by Krinitzsky and Marcuson, 1982 (Plates

4.2 and 4.3). Note that the data for these studies are for hard

sites only, with ground conditions similar to those found at the

NASA Dryden site. These studies and isoseismal maps for the larger

regional earthquakes of southern and central California

provide an excellent data set for determining attenuation

characteristics in the Mojave area.

4.4 Ground Motion

Site ground motion is calculated from the attenuation charac­

teristics given above. Extrapolation to the larger San Andreas

event has been calculated. Representative ground motions that

may be experienced at the NASA Dryden site are indicated in

Table 4.1.

40

500

400

100

w~ <.9

"" <{ ::; <{

~~ 0

~ ~ z

:~ ~ ~I

-II.. ....... IfI:l ....... .........

300

200

::t 80 ~ " '"

¥u ~ .........

'" , ........... .. w U 60 ~

50 t-(J)

0 ..J 40 « f!: z 30 w U 0.. W

20

.... " In "- ""- ~

" "-.n; ;D ~ "" "-:" 'J ~ ~ ~

.........

" ~"/ \ ~ ~a. ~~ c

0"", '" '<, r-...

~' ~'\ r'"

" ~~ ~ ~ ~ ".> '0

1\ 1\" "" ~: "", . "-~

LEGEND

~~ GENERAL .?YMBOL MAGNITUDE ~~ 0 7.5

II 7.0 ~ ~, ,,,

~ "-0 6.5 -\:v <0 -...;fJ' " i".. V 6.0 '0'

-~ "- ~ ,

• 5.5 '\

10

8

... 5.0 \ ~ " -- • 4.5

I\" "- " I I ~ ~\ '\. ,

4 II: m :llll IX

MM INTENSITY

INTENSITY VERSUS f'.'IAGNITUDE AND EPICENTRAL DISTANCE

Ref: Krinitzsky and Chang, 1975 PLATE 4.1

41

C1

Z

1.3

1.2

1.1

1.0

0.9

0.8

o 0.7 t:: ct a: w. irl 0.6 o o ct

0.5

0.4

0.3

0.2.

0.1

o

NUMBER OF HOR. I (2) (n) DATA UNITS PACOIMA .~

••••••• LIMIT OF DATA -- MEAN + a -0 MEAN

I-- NEAR FIELD HARD SITE . .

I

! . . (4) i

.. I . . .. . • . .

(23) ... . I • I • . • I . . . / . ' . . 4r' (24) .... .

." MELENDY t I-" RANCH I

I , J .,' / / ~, ()

I I ,~ " 1-- I

-:/ ( V<> ,

MM INTENSITY

ACCELERATION VERSUS MM INTENSITY NEAR FIELO--HARD BITE

{ (2) ,

~. PACOIMA

l i I

I ! i

, / J

7 1

V·

x

Ref: Krinitzsky & Marcuson, Nov. 1982 PLATE 4.2

42

0.6 ,...-------------,-----y----,----r---. (n) NUMBER OF HOR.

DATA UNITS _ ... LIMIT OF DATA

0.5 -- MEAN +a -0 MEAN

CT _ 0.4- - FAR FIELD ~ HARD SITE (38)

~

W~ 0.3' ~-+---r_I-----l--.-.:'·· +----f------lr----+---l

-- (42! •••• •• /~ ~ O~2 ~_+__-(:......,3~6)---.a:-)+'-·-..lfI4.'zA~~-·/-_+_--+_-__+____i ...... ~/~

(6) 10·· ~'-... , ....... _,,.."..J. 0.1

o ~~----~---~---~---~--~--~~

MM INTENSITY

ACCELERATION VERSUS MM INTENSITY FAR FIELD .. -HARD SITE

Ref: Krinitzsky & Marcuson. Nov. 1982

43

x

PLATE 4.3

TABLE 4.1

REPRESENTATIVE GROUND MOTIONS AT NASA EDWARDS FACILITY

Bracketed Predomi-Distance Duration nant

Int to Site I Accel, Veloc, Disp, at 0.05g Period, Source Mag 10 (mi.) site g cm/sec cm sec.

I: San Andreas 8+ XII 29 IX 0.40 50 25 40

II: Mojave Block 4.5 VI 3.5 VI 0.20 20 10 6

The basis for selection of the representative ground motion at

the site is as much intuitive, or art, as science. The Maximum

Probable Earthquake is one that has a high likelihood of taking

sec.

0.5

0.20

place during the lifetime of the project. It is usually at least

a repeat of the largest historical event and is tempered by the

evaluation of the Maximum Credible Earthquake the system will

support. In nuclear facility terms, it is the Operating Basis

Event--and is designed to provide design level adequate to

ensure life safety. In very seismically active areas of Cali­

fornia, the MPE may approach the MCE. That is, an event larger

than 8+ on the San Andreas is remote, the effects of which would

only lengthen the disturbed area but not increase radiation

normal to the fault. Certain of the faults appear more active

along midsections than at their terminals. Other faults appear

to have all the potential for movement but do not have a demon­

strated historic activity. Consideration is principally given

to historic activity and fault length. The work of other re­

searchers and design values for similar projects are also

factors, as is the magnitude-intensity-acceleration relationship.

44

Thus, the selection process takes these and many other factors

into consideration. The figures given in Table 4.1 are meant

to be reasonable, biased toward the MCE, but with an admitted

moderate degree of the expectation of exceedance. Also, they

are meant to represent several repeated excursions at periods

of interest and not a single high frequency spike.

The data summaries of Krinitzsky, Chang, and Marcuson have

provided much guidance for the ground motions selected. The

values are for firm soil or southern California rock, such as

exists at the site.

5. DESIGN ACCELEROGRAMS

Selection of analogous accelerograms for the design earthquake

is usually an unsatisfying process. Accelerograms selected

should be analogous for the design earthquake with respect to

magnitude, depth of focus, earthquake mechanism, intervening

structural geology, lithology of path, and site characteristics.

In addition, there should be several records. Most of the

models fail to meet these criteria in most categories.

No good time-history accelerogram exists for a great earthquake

at moderate distance. The best available is the N21E component

of the Taft record of the 1952 Kern County earthquake. Its

7.2 magnitude is the largest event in the 51 year old inventory.

Unfortunately, it fails because of its location on a deep

alluvial column. (See Appendix C for site data, accelerogram,

and response spectra). However, it does offer guidance with

respect to spectral shape and duration. The Taft site is

27 miles from the epicenter of the 1952 earthquake and slightly

closer to the trace of the White Wolf Fault. Consideration must

be given in its use to the slightly longer periods present.

45

A scale factor of 2.62 would be required to bring the N21E trace

up to the recommended design acceleration; therefore, there is

a deficiency in amplitude as well as spectral content. Spectral

content should also be modified by tightening the time base by

about 20%, thus raising the spectral response at shorter periods.

The select~on of analogous accelerograms for this design earth­

quake has been simplified for the nearby event because of the

simplicity of the site itself. There is but a very thin (7 to

10 feet) cover of soil or disintegrated granite. It is known

that the foundations of the structure penetrate the surficial

material and that the structure is founded on crystalline rock.

Hence, it is a true "hard" site, a situation not usual for

southern California.

"Hard" site accelerograms have traditionally been limited to

records written at Helena, Montana and at Golden Gate Park,

San Francisco. Moreover, there are but two useful accelerograms

from those stations, written in 1935 and 1957, respectively.

In addition, several of the sites to the north of the 1971 San

Fernando epicenter are considered to be on rock. Also, the

recent expansion of the network of instruments developed in the

northern Sierra by the California Division of Mines and Geology

has produced a number or records of ground motion on rock.

The magnitude 6.0 Helena, Montana 1935 accelerogram was recorded

on an instrument founded on Precambrian limestone located at

Carroll College, an epicentral distance of 4 miles. The station

has since been moved to another location. The peak acceleration

was measured as 0.146g on the N-S component and 0.145 on the E-W

component. Peak vertical acceleration was 0.089 g. Appendix C

shows station location, geology, acceleration, and response

spectra.

46

The magnitude 5.3 San Francisco 1957 earthquake developed only

0.102 g at the Golden Gate Park site, located on weathered

Franciscan radiolarian chert and interbedded shale. The station

is about 5 miles from the San Andreas, along which the earth-

quake was located. The record was examined but not used in

this investigation because of its small amplitude.

The inventory of accelerograms written near NASA Dryden site

was also considered. There are 32 accelerograph stations in o 0 0 the region bounded by 34.5 Nand 117.0 to 118.5 W. However,

many of these stations have been recently.installed, so only

five of the stations have produced usable records with acceler­

rations of O.lOg or greater. All five of these records, with

maximum accelerations from 0.13 to 0.19g, were of the 1971

San Fernando earthquake:

Station No. Name Peak g Si te Conditions

121 Fairmont Reservoir 0.17 17'± sand & gravel, over granite

125 Lake Hughes No. 1 0.17 80-+-' alluvial over granite

126 Lake Hughes No. 4 0.19 15' decomposed gr2-'1i te, over bedrock

262 Palmdale Fire Station 0.13

585 Pearblossom Pumping Plant 0.15

Station location, geology, accelerograms, and spectra are shown

in Appendix C for the Fairmont Reservoir, Lake Hughes No.1,

and Lake Hughes No.4 sites.

Recent "rock" records are available from the Mammoth Lakes earth­

quakes of May 1980 written on a central recording system at a

tunnel location in Long Valley Dam. The geology is described

as layered blocky rhyolite with flows 2 to 15 feet thick. The

47

tunnel is within the flows. The surface has 3 feet of soil and

10 feet of weathered rhyolite. The records fail as analogies.

Three sets of data yield as many different responses. In

addition, site geometry and earthquake mechanism do not corre­

spond to the Edwards site.

A summary of aceelerograph data is given in Table 5.1.

TABLE .5.1

ACCELEROGRAM DATA

Dist to Peak Shown

Fault, Accel, Site in Location Date mi Mag g Conditions Appendix

Taft 19.52 27 7.7 0.18 Deep alluvium Yes

Helena 193.5 4 6.0 0.146 Pre-C limestone Yes

Golden Gate Park 19.57 .5 .5.3 0.102 Franciscan No

Fairmont Reservoir 1971 21.6 6.4 0.17 1.5 ' to granite Yes

Lake Hughes No.1 1971 19 • .5 6.4 0,17 80' to granite Yes

Lake Hughes No.4 1971 18 6.4 0.19 1.5' to granite Yes

Long Valley .5-27 Dam Tunnel 1980 14.1 6.3 0.24 Rhyoli te flows No

48

6. RECOMMENDATIONS FOR SEISMIC DESIGN CRITERIA

On the basis of the study, it is recommended that the NASA Edwards

Air Force Base Facility be evaluated for its resistance to

the two earthquakes postulated in this report:

1. A magnitude 8.5 event on the nearest approach

of the San Andreas Fault, 29.miles, would

impose an acceleration of 0.40g on the .site

with a bracketed duration of 40 seconds. It

is suggested that a scaled trace of the N21E

component of the Taft accelerogram of the

1952 Kern County earthquake is an adequate

model.

2. A near-field magnitude 4.5 event from a Mojave

block fault would impose an acceleration of

0.20g at the site with a short bracketed duration

of 6 seconds. It is suggested that the unscaled

trace of the Lake Hughes No.4 S69E component

from the San Fernando Valley earthquake of

1971 be used as an appropriate model.

49

7. RECOMMENDATIONS FOR FUTURE STUDIES

A comparison of the micro seismic activity of the western portion

of the Mojave block with the known faults in this area suggests

a casual relationship between some of the faul,ts and some of the

seismicity. However, seismicity near the project site suggests

the possibility that additional faults, not presently known,

exist beneath or near the NASA Dryden Facility. The existence

of such a fault wduld not be expected to significantly alter the

seismic characteristics recommended in this repdrt for nearby

earthquakes. What would be affected is the possibility of sur­

fac8 rupture occurring somewhere on the site other than at the

Data Center site.

Therefore, it is recommended that to determine the safety of

other sites on the facility from such an occurrence, the follow­

ing work be carried out:

1. Review and interpretation of aerial photographs of the

area in possession of the Air Force and other govern­

mental agencies.

2. Obtaining, review and interpretation of EROS remote

sensing data and aerial photographs of the area.

3. Review in detail all seismic records of the area and

plot at sufficient scale to compare with fault maps.

4. Surface mapping to determine details of local geology

and faults found on above imagery and fault maps.

5. Possible trenching of nearby faults determined to be

significant in the preceding steps.

6. Possible installation of seismometer and recording of

local microseismicity to better define location of

local seismic events and source areas.

50

8.0 REFERENCES

8.1 General Geology

Algermissen, S.T., and Perkins, D. M., 1976, A probabilistic estimate of maximum acceleration in rock in the contiguous United States: U. S. Geo­logical Survey Open-File Report 76-416, 45 p.

Allen, C.R., St. Amand, Pierre, Richter, D.F., and Nordquist, J.M., 1965, Relationship between seismicity and geologic structure in the southern California region: Ssismological Society of America Bulletin, v. 55, No.4, p. 753-798.

Association of Engineering Geologists, 1973, Planners guide to the seismic safety element: University Publishers, Los Angeles, California, 446 p.

Bull, W.B., and McFadden, L.D., 1977, Tectonic'geomorphology north and south of the Garlock fault, California in Geomorphology in Arid Regions, D. O. Doehring ed., Eight Annual Geomorphology Symposium Proceedings, Binghampton, Np.w York, p. 115-138.

Burke, D.B., 1978, Active faults and regional deformation in the western Mohave Desert, California: in Summaries of Technical Reports, June, Volume VI; U.S. Geological Survey, Menlo Park, California, p.9.

~~ _______ ~ __ ~, 1979, Quaternary deposits and tectonics of the Antelope Valley-western Mohave Desert region, California: in Summaries of Tech­nical Reports, Volume IX, December: U.S. Geological Survey Open-File Report 80-6, Menlo Park, California, p.3.

~~ ____________ , 1979a, Quaternary deposits and tectonics of the Antelope Valley-western Mojave region, California: in Summaries of Technical Reports, Volumn VIII, June: U.S. Geological Survey, Menlo Park, California, p. 12-13.

California Division of Mines and Geology, 1963, Trona Sheet: Geologic map of California, Scale 1:250,000.

, 1965, Bakersfield Sheet: ~~---~------~~77~--~--~-~--~~= Geologic map of California, Scale 1:250,000.

~~ ___ ~ ______ ~~~ ____ ~ ____ ~ __ ~~ __ , 1969, Los Angeles Sheet: Geologic map of California, Scale 1:250,000.

, 1969a, San Bernardino Sheet: ~~---~------~~~~--~--=-~--~~=-Geologic map of California, Scale 1:250,000.

51

Carter, B.A., 1981, Quaternary displacement on the Garlock fault, California - in Geology and Mineral Wealth of the Mojave Desert Area, California: South Coast Geological Society Special Publi­cation, p. 457-466.

Church, J.P., Castle, R. 0., Clark, M. M., and Morton, D. M., 1974, Continuing crustal deformation in the western Mohave Desert, California: Geological Society of America Abstracts with Programs v.6, No.7, p. 687.

Clark, M.M., 1973, Map showing recently active breaks along the Garlock and associated faults, California: U.S. Geological Survey Misc. Geological Investigations, Map 1-74, 3 sheets, 1:24,000 scale.

Crandall, LeRoy, and Associates, 1962, Report of foundation investi­gation, Proposed Building Addition, Flight Research Center, Edwards Air Force Base, Edwards, California: LeRoy Crandall and Associates, Los Angeles, California, 13 p.

, 1981, Report of Foundation Investi---~----~----~~~--~~-----; gation, Proposed Data Analyses Facility Building 4838, Hugh L. Dryden Flight Research Center, Edwards, California: LeRoy Crandall and Associates, Los Angeles, California, 24 p.

Cummings, David, 1981, Mechanics of fault deformation and seismo­tectonic zoning, Mojave Desert, California - in Geology and Mineral Wealth of the Mojave Desert Area, California: South Coast Geological Society Special Publication, p. 101-120.

~ ____ ~ __ ~ __ ~,. and Leeds, D. J., 1977, Seismotectonic zoning using theoretical mechanics: VI World Conference Earthquake Engineering, New Delhi, India.

Dibblee, T.W., Jr., 1961, Evidence of strike-slip movement on northwest­trending faults in Mojave Desert, California: U.S. Geological Survey Professional Paper 424-B, p. B197-B199.

, 1967, Areal geology of the western Mojave Desert, ~~~--~--~~~ California: U.S. Geological Survey Professional Paper 522, 152p.

Dutcher, L.C., Bader, J.S., and Hiltgen, W.J., 1962, Data on wells in the Edwards Air Force Base area, California: California Department of Water Resources Bulletin, No. 91-6, 209 p., plus maps.

Evernden, J.F., Kohler, W.M., and Clow, G.D., 1981, Seismic intensities of earthquakes of conterminous United States - their prediction and interpretation: U.S. Geological Survey Professional Paper 1223, 56 p., 5 plates.

52

Fuis, G.S., 1976, Ground breakage and aftershocks of M=5.2 Galway Lake earthquake, June 1975, Mojave Desert, California: Journal of Geophysical Research, v. 57, No. 12, p. 954.

Guptil, P., Collins, D., Sugiura, R., and Birkhahn, P., 1979, Quaternary deformation along the Llano Fault, southern Antelope Valley, California: Geological Society of America Abstracts with Programs, Cordilleran Section.

Hays,W.W., 1980, Procedures for estimating earthquake ground motions: U.S. Geologi6al Survey Professional Paper 1114, 77 p.

Hewett, D.F., 1954, General geology of the Mojave Desert region, Califor­nia: California Division of Mines and Geology Bulletin 170, ChptlI, p.5-20.

Hileman, J.A., Allen, C.R. and Nordquist, J.M., 1973, Seismicity of the southern California region, 1 January 1932 to 31 December 1972: Califor­nia Institute of Technology Seismological Laboratory, Pasadena, Califor­niz, 404 p.

Hill, R.L., and Beeby, D.J., 1977, Surface faulting associated with the 5.2 magnitude Galway Lake earthquake of May 31, 1975, Mojave Desert, San Bernardino County, California: Geological Society of America Bulletin, v. 88, p. 1378-1384.

, Treiman, J.A., Given, J.W., Pechmann, J.C., McMillan, J.R., and Ebel, J.E., 1980, Geologic study of the Homestead Valley earthquake swarm of March 15, 1979: California Geology, v. 33, No.3, p. 60-67.

Jennings, C.W., 1975, Fault map of California: California Division of Mines and Geology, Geologic Data Map No.1, Scale 1:750,000.

Keaton, J.R., and Keaton~ R.T., 1977, Manix fault zone San Bernardino County, California: California Geology, v. 30, No.8, p. 177-186.

Kerr, R.A. 1984, Stalking the next Parkfield earthquake: Science, v. 223, No. 4631, p. 36-38.

LaViolette, J.W., Christenson, G.E., and Stepp, J.C., 1981, Quaternary displacement on the western Garlock fault, southern California - in Geology and Mineral Wealth of the Mojave Desert Area, California; South Coast Geological Society Special Publication, p. 449-456.

O'Brien, Ken, and Associates, 1973, Foundation investigation and engi­neering report, Aircraft Servicing Dock Building No. 4823 NASA Flight Research Center Edwards, California: Ken O'Brien and Associates Consulting Engineers, 31 p.

53

Ponti, D.J., and Burke, D.B., 1980, Quaternary geology of the eastern portion of Antelope Valley, California: U.S. Geological Survey Open­File Map 80-1064.

, and Hedel, C.W., 1981, Quaternary geology ~~~----~~----~----~~: of the central portion of Antelope Valley, California: U.S. Geological Survey Open-File Map 81-737.

Richter, C.F., 1958, Elementary Seismology: New York, Freeman, 768 p.

Ross, D.C., 1969, Map showing recently active breaks along the San Andreas fault between Tejon Pass and Cajon Pass, southern California: U.S. Geo­logical Survey Misc., Geol. Invest. Map 1-553, 1:24,000 scale.

Sieh, K.E., 1978, Prehistoric large earthquakes produced by slip on the San Andreas fault at Pallett Creek, California: Journal of Geophysical Research, v. 83, p. 3907-3939.

Stein, R.S., and Lisowski, Michael, 1983, The 1979 Homestead Valley earthquake sequence, California: control of aftershocks and postseismic deformation: Journal of Geophysical Research, v. 88, p. 6477-6490.

Wallace, R.E., 1983 Tectonic analysis of active faults: in Summaries of Technical Reports, Volume 15: U.S. Geological Survey Open-File Report 83-90, p. 170-172.

Wiese, J.H., and Fine, S.F., 1950, Structural features of western Antelope Valley, California: American Association of Petroleum Geolgists Bulletin v. 34, No.8, p. 1647-1658.

Wood, H.O., Heck, N.H., and Eppley, R.A., 1966, Earthquake history of the United States, Part II - Stronger earthquakes of California and western Nevada: U.S. Department of Commerce, Coast and Geodetic Survey publi­cation No. 41-1, U.S. Govt. Printing Office.

54

8.2 General Seismic

Astiz, Luciana and Allen, Clarence R., 1983, Seismicity of the Garlock Fault, California: Bulletin of the Seismological Society of America, v. 73, No.6, Part A, p. 1721-1734.

Algermissen, 1973, The problem of seismic zoning - in Building Practice for Disaster Mitigation: National Bureau ofStandards, Building Science Series 46.

California Institute of Technology, 1971-1974, Strong motion accelerograms, and analyses of storing motion accelerograms: Earthquake Engineering Research Laboratory, California Institute of Technology, 80 volumes.

California Institute of Technology, 1979-1984, Southern Califor­nia array for research on local earthquakes and Teleseisms (SCAR­LET), preliminary determination throug"h July 1983: Calif ornia Institute of Technology Seismological Laboratory.

Coffman, J.L., and Von Hake, C.A., 1973, Earthquake history of the United States (revised through 1970): National Oceanic and Atmospheric Administration.

Donovan, N.C., 1973, Earthquake hazards for buildings - in Buil­ding Practices for Disaster Mitigation: National Bureau of Stan­dards, Building Science Series 46.

Duke, C.M., and Leeds, D.J., 1971, Site characteristics of southern California strong motion earthquake stations: Califor­nia Division of Mines and Geology Special Publication 38.

Eguchi, R.T., Campbell, K.W. and Wiggins, J.H., 1979, A survey of expert opinion on active and potentially active faults in Cali­fornia, Nevada, Arizona and northern Baja California: J.H. Wiggins Company Technical Report 79-1328-2 to U.S. Geological Survey.

Friedman, M., 1976, Seismicity of the southern California region, 1 January 1972 to 31 December 1974: California Institute of Technology Seismological Laboratory.

55

Fuis, C.S., Friedman, M.E., and Hileman, J.A., 1976, Preliminary catalog of earthquakes in southern California, July 1974-September 1976; U.S. Geological Survey Open-File Report 77-181, 107 p.

Greensfelder, R.W., 1974, Map of maximum bedrock acceleration from earth­quakes in California: California Division of Mines and Geology Map Sheet 23, Scale 1:2,500,000.

Hart, E.W., 1977, Fault hazard zones in California: California Division of Mines and. Geology Special Publication 42.

Hileman, J.A., Allen, C.R., and Nordquist, J,M., 1973, Seismicity of the southern California region, 1 January 1932 to' 31 December 1972: Califor­nia Institute of Technology Publication, 404 p.

Krinitzsky, E.L., and Chang, F.K., 1975, Earthquake intensity and the section of ground motions for seismic design - in state of the Art for Assessing Earthquake Hazards in the United States: Corps of Engineers Waterways Experiment Station, Misc. Paper 5-73-1.

Krinitzsky, E.L., and Marcuson, III, W.F., 1982, Principles for selecting earthquake motions in engineering design: U.S. Army Engineers, Waterway~ Experimental Station, Vicksburg.

Lamar, D.L., Merifield, P., and Proctor, R. J., 1973, Earthquake recur­rence intervals on major faults in southern California - in Geology, Seismology and Environmental Impact: Association of Engineering Geologists, Los Angeles, p. 265-276.

National Oceanic and Atmospheric Administration, 1928 - present, United States earthquakes: U.S. Coast and Geodetic Survey, National Oceanic and Atmospheric Administration and U.S. Geological Survey annual publi­cations.

National Oceanic and Atmospheric Administration, 1973, A study of earth­quake losses in the Los Angeles area: National Oceanic and Atmospheric Administration, 329 p.

Olson, R.A., and Thiel, Jr., C.C., editors, 1983, Earthquake damage miti­gation for computer systems - Workshop Proceedings, Finance, Insurance and Monetary Services Committee: Earthquake Engineering Research Institute, Berkeley •.

56

Shannon and Wilson, Inc., and Agbabian Associates, 1978, Verification of subsurface conditions at selected "rock" accelerograph stations in California: U.S. Nuclear Regulatory Commission, NUREG CR/0055, Vol. 1.

, 1978, Geotechnical ~------~~--~--~ and strong motion earthquake data from U. S. accelerograph stations:

U.S. Nuclear Regulatory Commission, NUREG - 0029, Vol. 2.

, 1980, Geotechnical =---and strong motion earthquake data from accelerograph stations: U.S.

Nuclear Regulatory Commission, NUREC/CR-0985, Vol. 3.

, 1980, Verification .~-~~~--~---~ of subsurface conditions at selected "rock" accelerograph stations in

California: U.S. Nuclear Regulatory Commission, NUREG/CR-0055, Vol. 2.

Toppozada, T.R., Parke, D.L., and Higgins, C.T., 1978 Seismicity of California: 1900-1931: California Division of Mines and Geology Special Report SR 135.

Turpen, C. D., 1980, Strong motion records from the Mammoth Lakes earthquakes of May 1980: California Division of Mines and Geology Preliminary Report 27.

57

APPENDICES

A. PLOT PLAN AND BORING LOGS

B. SEISMIC SCALES

1. Intensity

2. Magnitude

C. ACCELEROGRAMS, SPECTRA, AND SITE GEOLOGY

Taft, 1952

Helena, Montana, 1935

Fairmont Reservoir, 1971

Lake Hughes No.1, 1971

Lake Hughes No.4, 1971

Long Valley Dam, 1980

58

APPENDIX A

PLOT PLAN AND BORING LOGS

59

~--------~--------------~/

EXIST. BLOGS.

(

~~-------------------------------------------~L~A~K~E~SH~OR~E~ ______ -=DR~/~V~E~ __________________________ ---------

'\ f

!I.IIl..FOR BOA. EI..EVS.]

SUAv [YOAS SPII(£ I'" .tlSPHAt.TIC P "VI N&,£L..Z28t.'5+.

BOR.2 '

• BOR.S

• BOR. 7

BOR.6 •

PROPOSED DATA ANALYSIS

FACILITY (BLDG. 4838)

EXIST. BLDG.

PLOT SCALE

o I

PLAN

7.1 131 23

7.7 114 26

5 ~.--~----~----+----+--+r

227S1 I I ! I I

I I r 10 ~----!-...--+--+---i---++ I 'I 2.3 120 59

22701

6.2 128

5.8 137

41

57

BORING I DATE DRILL E D: September 2, 1981

24"-Diameter Bucket:

2281.5*

SILTY SAND - fine, lenses of Clayey Silt, light brown to grey

GRANITE - weathered, decomposed, light grey to grey

Light grey and white

LJ._-L3=-:.:....::6--.L=-14..:...-0~-=-54~--"'L_--'-----.) NOTE: Water not encountered. No caving.

* Elevations refer to datum of reference drawing; see Plate 1 for location and elevation of bench mark.

PLATE A-2

61

2280

11.8 107 13

2275 6.6 141 49

2270 NOTE:

BORING 2

DATE DRILLED: September 2, 1981 24"-Diameter Bucket

2281. 5

1~" Asphaltic Paving -FILL - SILTY SAND - fine, some gravel,

light brown SILTY SAND - fine, light brown GRANITE - weathered, decomposed, light

grey and grey

(BORING TERMINATED DUE TO DIFFICULT DRILLING IN GRANITE)

Water not encountered. No caving.

PLATE A-3

62

3.2 118 13

4.3 106 56

227. 5+----~~-+----~--+--.h 4.5 79

1.1 97

I

227, 10 +---+---+-----+---1---1

226i 15 __ ......L..----L--~_..J

BORING3 DATE DRILLED:

EQUIPMENT USED:

September 2, 1981 24"-Diameter Bucket

ELEVATION: 2279.7

; SM SILTY SAND - fine, few gravel, light grey and light brown

GRANITE - highly weathered, decomposed, light grey to grey

(BORING TERMINATED DUE TO DIFFICULT DRILLING IN GRANITE)

NOTE: Water not encountered. No caving.

PLATE A-4

63

12.9 107

275 7.3 122 5

2.6 133

5.3 142

270 10

2.9 128

2265

16

25

34

41

66

BORING 4

DATE DRILLED: September 2, 1981

24"-Diameter Bucket

2279.2

t 2" Asphaltic Paving SM -FILL - SAND and SILT - some gravel, broW!

~~+-~ SILTY SAND - fine, light brown GRANITE, - weathered, decomposed, light

grey and grey

White

(BORING TERMINATED DUE TO DIFFICULT DRILLING IN GRANITE)

NOTE: Water not encountered. No caving.

PLATE A-5

64

5.6 116 23

227Q

lOr---~---+----r---~·

226

BORING 5

DATE DRILLED: September 2. 1981 EQUIPMENT USED: 24 "-Diameter Bucket

SH

2278.9

2" Asphaltic Paving SILTY SAND - fine. light brown

GRANITE - weathered, decomposed, light grey to grey

(BORING TERMINATED DUE TO DIFFICULT DRILLING IN GRANITE)

NOTE: Water not encountered. No caving.

PLATE A-6

65

4.3 118 55

1. 3 l35 148

2275

10+---~--~---+---+-4 2270

BORING 6

DATE DRILL ED: September 2, 1981

USED; 24"-Diameter Bucket

2280.6

SM SILTY SAND - fine, light brown

GRANITE - weathered, decomposed, light grey to grey

NOTE: Water not encountered. No caving.

PLATE A-7

66

3.3 122 25

2.6 l31 72 5

275

10

BORING 7

DATE DRILLED: September 2, 1981

EQUIPMENT USED: 24 "-Diameter Bucket

2282,Q SH SILTY SAND - fine, brown

NOTE:

GP~ITE - weathered, decomposed, light grey and grey

Water not encountered. No caving.

PLATE A-8

67

APPENDIX B

SEIS~lIC SCALES

1. INTENSITY 2. MAGNITUDE

68

MODIFIED MERCALLI INTENSITY (DAMAGE) SCALE O~ 1931 (Abridged)

I. Not felt except by a very few under especially favorable circumstances. (I Rossi-fore 1 Scale.)

II. Fe It only by a fe.w persons at rest, especially on upper floors of buildings. Delicately suspended objects may swing. (I to II Rossi-Forel Scale.)

III. Felt quite noticeably indoors, especially on upper floors of buildings, but m1lny people do not recognize it as an earthquake. Standing motorcars may rock slightly. Vibration like passing of truck. Duration estimated. (III Rossi-~ore 1 Scale.)

IV. During the day fE! It indoors by many, outdoors by few. At night sorre awakened. Dishes, windows, doors disturbed; walls make creaking sound. Sensation like heavy truck striking building. Standing motorcars rocked noticeably. (IV to V Rossi-Forel Scale.)

V. Felt by nearly everyone, many awakened. Some dishes, windows, etc., broken; a few instances of cracked plaster; unstable objects over­turned. Disturbances of trees, poles, and other tall objects sorretirres noticed. Pendulum clocks may stop. (V to VI Rossi-Fore 1 Scale.)

VI. Felt by all, many frightened and run outdoors. Some heavy furniture moved; a few instances of fallen plaster or damaged chimneys. Damage slight. (VI to VII Rossi-Forel Scale.)

VII. Everybody runs outdoors. Damage negligible in buildings of good design and construction; slight to moderate in well-built ordinary structures; considerable in poorly built or badly designed structures; some chimneys broken. Noticed by persons driving motorcars. (VIII Rossi-Forel Scale.)

VIII. Damage slight in specially designed structures; considerable in ordinary substantial buildings with partial collapse; great in poorly built structures. Panel walls thrown out of frarre structures. Fall of chimneys, factory stacks, columns, monurrents. walls. Heavy furniture overturned. Sand and mud ejected in small amounts. Changes in well water. Persons driving motorcars disturbed. (VIII+ to'lX­Rossi-Forel Scale.)

IX. Damage considerable in specially designed structures; well-designed frame structures thrown out of plumb; great in substantial buildings, with partial collapse. Buildings shifted off foundations. Ground cracked conspicuously. Underground pipes broken. (IX+ Rossi-Forel Scale.)

X. Some well-built wooden structures destroyed; most masonry and frame structures destroyed with foundati.ons; ground badly cracked. Rails bent. Landslides considerable from river banks and steep slopes. Shifted sand and mud. Water splashed (slopped) over banks. (X Rossi­Fore I Scale.)

XI. Few, if any, (masonry) structures remain standing. Bridges destroyed. Broad fissures in ground. Underground pipelines completely out of service. Earth slumps and land slips in soft ground. Rails bent greatly.

XII. Damage total. Waves seen on ground surface. Lines of sight and level distorted. Objects thrown upward into the air.

PLATE B··1

69

AMPLITUDE

1IIIIIIilllll"~111I1

-------S-P=24 sec

50

40 6

30 ~ ____ -------5J-------------r

20

0-5

DISTANCE km

20

/0 8 6

4

2

4

3

2

/0

5

2 /

0.5

0.2

0./

S-P o

MAGNITUDE AMPLITUDE sec mm

TO DETERMINE THE MAGNITUDE OF AN EARTHQUAKE WE CONNECT ON THE CHART

A. THE MAXIMUM AMPLITUDE RECORDED BY A STANDARD SEISMOMETER, AND B. THE DIS'l'ANCE OF THA'r SEISMOMETER FROM THE EPICl!:NTEH OF THE EARTHQUAKE (OR THE DIFFERENCE IN THE TIMES OF ARRIVAL OF THE P AND S WAVES)

BY A STRAIGHT LINE, WHICH CROSSES THE CENTER SCALE AT THE MAGNITUDE.

RICHTER MAGNITUDE SCALE NOMOGRAPH

PLATE B-2

70

Ref;

The Magnitude Scale is a means of indi­cating the size on an earthquake on the basis of instrumental records.

Dr. C. F. Richter, Seismological Labo­ratory, California Institute of Technol­ogy, developed a magnitude scale which is based on the maximum recorded ampli­tude of a standard seismograph located at a distance of lOO km from the source of a shallow earthquake. The magnitude is defined by the relationship

M = log A - log Ao

In this relationship, A is the recorded trace amplitude for a given earthquake at a given distance written by a standard instrument, and Ao is the trace ampli­tude for a particular earthquake selected as a standard. The zero of the scale is arbitrarily fixed to fit the smallest re­corded earthquakes. The largest known earthquake magnitudes are on the order of 8 3/4. This magnitude is the re suIt of observations and not an arbitrary scaling. The upper magnitude limit is not known, but is estimated to be about 9.

Empirical relationships between earth­quake magnitude and energy release have been developed by several investigators. There i.s no exact relationship between earthquake magnitude and energy for large earthquakes, and these empirical relationships should be cons ide red no more than approximations.

RICHTER EARTHQUAKE MAGNITUDE SCALE

Richter, Elementary Seismol~, 1958

PLATE 8-·3

71

APPENDIX C

ACCELEROGRAMS, SPECTRA,AND SITE GEOLOGY Taft, 1952 Helena, Montana, 1935 Fairmont Reservoir, 1971 Lake Hughes No.1, 1971 Lake Hughes No.4, 1971 Long Valley Dam, 1980

72

Toft; Lincoln School

USG S Tc)pogrophic Ouadrangle:

Taft I Colifornia

Coord inates: 35 0 OS' 52" N 119 0 27' 22"W

Location: Sixth and Warren Streets.

O~-==IOO~O~~2~OcO=O======~O Scale in feet

Structure: Two- story I reinforced concrete

Note: Coordinates scaled from USGS topographic quadrangle

STATION LOCATION PL.AN LINCOLN SCHOOL

LOCATION, TAFT ACCELEROGRAPH TAFT

N

1

Ref: NURJD3/0029, Vo1.2 PLATE C-I _______ , __________________________ ~~~~~~ __________________ _J

PLATE C-1

73

30'

120"00'

:/ o -<10 ' ... ".

v/

'" F'

gr

BOkersfie~

QP T,

EXPLANATION

*

Allulilum, Recent in Qq.; mCh.ldH dune d.g,osits.

Stream cheonel, fan, Clnd bOSln aeposif1, Reeln' In C1Q'.

Loke aepo.iU I Quaternary in 00'.

MOrLn, deposit., marH'lt and nonmarine terrace dfpo.tt" Quot.rnor), in COlj includes upper Pliocene marine deposit •.

Nonmarine sedimentary·deposit" Plio·PI.isto­ctnt in 0Qt.

Volcanic rock. and igneous intrusive rock. 1

rertiory in oOt.

SeIsmograph StatIon locatIon

@M=5.7 Epicenter location, Richter I'nognltudt:,

6-5-60 and date of occurrence.

Faults that have moved during Quaternary time

C Without historic record (OWrox. post 2: million years).

• Faults thot hove mo.".d durlOQ historic time (OQp!'or;. 200 years) .

NOTES:

I) Geology is $lmpl,fied from Jennings ond Strand (1969), SmIth ( 1964), Jennings ( 1959), ortd Jenninos ( 1958 ). To 5Imphfy, QeOlogic mop units on the abcNe source maps haw been grOJPedi culture, streoms, and minor rock and olluvium outcrops hove been deleted. MoJO'" fou Its shown ad source mops have been relllY<i 1ft

occordance WIth Jennings (1973),

2} Inform~tlon on fOlJU achvity (Ouoterna-y Oefl'llty, Hlstonc octl'1lfy) JS from Jennings (1913). The sesnllC aetly,t)' symbol" ~ used on this fillJre, do not

Location of GeoloQic Mop

N

Ref NUREG/0029,Vol.2

~/ -Contact

",-......,. •• ? Fault

............... /"0

Thrust Fault

~

Sedimentary rocks I Cretaceous in oot·

MesozoIc sedimentary rocks; oJso Includes metamorphic rocks.

MesozOtC QrGntfU: rocks; also Includes pr,-Cenozolc tnetcmorptuc, lIolcanlc, and ultramafiC rocks

MetamorphiC end meto,edirMntory r!X'.k" pre ·Cr.toceous in OQI

Sedimentary and volcaniC rock', Paleozoic in 091.

Prtcombflon Igneous and metamorphiC rock,; includes crystallin. rocks which may be OS young os MuozQ4C.

Doshed where opptoxlmotely located.

Dashed llbere approximate!y Iocat.:!, dotted whtfe conceoled, Quened where eXIste!'1c' IS uncertalft.

Barbs on UC)pIr plate, dashed ",here opproxi-motely located, dotted wl'\t:rt concealed.

CrOU-se(;flon Iocatlon, sectton F-F' shown on Fio. 6-5.

neeeHOflly mean tnot ttw entire I8'\QtI'I of the fault shows eYldence of the respect • ..,. oct.ytfy. (SM Jennings, !973, for details).

o

3) Indl'/lduol faults WIthin the Sen Andreas fault zcr,e shOw evidence of Quoternory and HIstone octi"'lfy. (Sft Jen",~$, 1973, forde-tails).

4) Heavy border on boxes tndle~ unln thot appeQ" on thiS figure. .

5) EorthquQU magnitudes and e-plc~trQI locotions a-e fram -UnIted Stotts Department of Commerce ( 1955, 1959, 196~), ond Humon and others t1971a.19720, 19730, 1974Q~ 19750)

10

o iO 15 20

$Cale in kilometer.

GEOLOGIC MAP LINCOLN SCHOOL

TAFT PLATE C-2

15

75

:;0 (]) t-h

Z -...J c:

:;0 -...J

t<:l Q

........... 0 0 tv \0

<: 0 i-'

N

F San Andreas Fault

,, ___ : __ n._,\ "''''''''V r'UIiI

5000-

o

5000

Temblor Raiiye

"

him

--, "

Taft

Qf ,:::----~ ..... -----, \ \

,

\.--, , -- ..... ,. \ '-- ""' ....... Qp

, ,

\ '---................... --.. -- PSJ~ \ ........... ----\ ',........... --\ ,,'-----" Mr ....... " ... , ................ ---" ..... _------

Pe

----

Son Joaquin Volley

Qf

--

F'

-5000

o

5000 ---- ...... ---- -- ------

Mr

10OOO-L---------------------L------------------------~~----------------------------~M~Od~if~ie~d-a7.ft~er~:-I~)~D~ib7b~I •• -(~19~6~2~)-IOOOO

G'> rn o 5

rG> z(") 8(")

-tr~ l>Z(J) ~(J)(J)

(")1 :J:(J) orn 0(") r-t

o Z

" I

"

Explanation

I Qal I Alluvium, Holocene in oge

rQfl ~lIuviol fan deposits, Holocene ~ In age

IQP1 Non-marine sedimentary deposits, ~ Plio- Pleistocene in age

rp.:1 ~orales Formation, Pliocene ( Pleistocene?) ~ In age

~ Quatal Formation, Pliocene in age

I Psj I Son JoaQuinFormation, upper Pliocene in Glle

!pbl Bitterwater Creek formation, middle and/or ~ lower Pliocene in aoe

rp:i Etchegoin 'ormation, middle and/or lower ~ Pliocene in age

~ Coliente ~rmation, upper Miocene in age

~ Basalt flows, upper Miocene in age

2) Haote, Bear, 8 Kleinpell (1954)

f"Msl Santa Margarita Formation, upper Miocene ~ in age

~ Reef Ridge Formation, upper Miocene in age

I Mml Monterey Formation, upper and middle Miocene in age

fM0 Temblor and/or Vaqueros Formation, middle ~ Miocene in age

--- Contact between geologic units ---- Fault Scale in miles

o 5 10

* Accelerograph station, projected Note: See Fig. 6-4 for locat'ion of cross-section.

50

100

I-I.L.

I-u :I: 500 ..., .., I-0 0.. a: ..., 0.. Q

(/)

U

t; a: ..., I-u

'" 1000 a:

'" :I: U

..., I-iii ..., ~ 5000

'" ~ a :I: I-a:

'" ...,

10,000

o

... ~

STATION VELOCITY, FPS

5000 10,000

I

I I I

II I, II

I ; : ! t

I I

~I 0:1

I

SITE CHARACTERISTICS, TAFT

Ref: Duke & Leeds, 1962

78

TAFT No. 55

Woter Cantont Density

r. pd W L Ele. 900'

1.5 65 · . Silty anel sanely 30 140 • 0 :

loon" sand, and · . " , (shol") glo".1. • o· -". "

'. ':' ; • 0 , .

• 0, · " • 0 ••

Tular. fm. (U. Pliocene)

-

--

144 --

-

--

- - San Joaquin fm. -148 (Pliocene) - Reef Ridge fm.

-. (Miocene)

- Antelope f,n. (Miocene)

-r/'!l 'II,; Santa Malgarita

170 - I;;' schi st II? -"'I. ,I I!,.

- I'lf ~ill

- II;

I I~;;; III

I '///

PLATE C-4

-....J \0

-...J f-' I

U1 o

KERN COUNTY. CRLIFORNIR ERRTHQURKE JULY 21. 1952 - 0453 POT IIR004 52.002.0 TRFT LINCOLN SCHOOL TUNNEL COMP N21E

C) PERK VRLUES: RCCEL = 152.7 CM/SEc/SEC VELOC I TY = -15.7 CM/SEC DISPL = -6.7 CM -250

i-3 H ~ t:tj I

::r: H Ul 1-3 0 :;0 to< ,

1-3 ~ I'%j 1-3

Z N f-' t:tj

o .......... m''''JlJ ::0 n nn

3:fTl ;)j. fTlfTl

250 ~I ______ ~ ______ ~ ______ ~L_ _______ ~ ______ ~ ______ ~ ______ ~ ______ ~ ______ ~ ________ L_~ ~--~ ~---i

-20 n 0 Z

-8

o ~---+~~------~~-------T------

81 L ____ ~~ ___ L ____ L_ ___ _L __

o 10 20 .. ___ L-_____ L_ .. __ ..

30 TIME - SECONDS

--'-_______ .J.

40

~--n-•

ro 0

() H 1-3

~ -250 t:r:1 ::0 t"'

-.J I-' I 0 Ul o

1-3 250 H 8: -20 t:r:1 I

n:: H (f)

1-3 0 ::0 0 K!

~ I'1j 1-3 20 (/) 0'1 -10 ~ M

KERN COUNTY, CRLIFORNIR EARTHQURKE JULY 21. 1952 - 0453 PDT IIR004 52.002.0 TRF T LI NCOLN SCHO.oL TUN~~EL COMP S69E

C) PERK VRLUES: RCCEL = 175.9 CM/SEc/SEC VELOC I TY = -17.7 CM/SEC OISPL = -9.2 CM

---; ---.l __ ----L_ --< ---.J

o ~~--~--~----~------+--------~ ----t~ ---r-"------------',-+----\------/---\------i---------+----7"---

10 L-______ ~ ______ ~ ______ ~ ______ ~

o 10 20

o (J)

---u .-n:D 3:(}

-~L------3LO----~-----4~0-------L------5~0---~~-~ Z

TIME - SECONDS ---;

co ...

KERN COUNTY, CRLIFORNIR ERRTHQURKE JULY 21, 1952 - 0453 POT IIR004 52.002.0 TRFT LINCOLN SCHOOL TUNNEL COMP VERT

C) PERK VRLUES: RCCEL = 102.9 CM/SEc/SEC VELOC I TY = 6.7 CM/SEC D I SPL = -5.0 eM -250

0

250

-8

0

-6

n ::s:: "-Ul rn n "-Ul rn n

n ::s:: "-

-Ul rn n

-

n n n fTl I fTl ::0 n -;

0 :z

< fTl I 0 n -; --<

o Ul --u I

~~-~----~~-------~------~----~--~--~---~ ~

61 L ______ -L ______ -L ______ -L ______ -L ______ -L ______ -L ______ -L ______ -L ______ -L ______ -L ______ ~

o 10 20 30 40 50 TIME - SECONDS

Ref: CIT/EERL 71-50 TIME-HISTORY, TAFT Vertical

fTl 3: fTl :z -;

KERN C~UNTY, CALIF~RNIA EARTHQURKE JULY 21,1952 - 0453 POT

u Q)

< c:

>- 6 I-U 4 0 ...J W >

2

IIIAOOij 52.002.0 TAFT LINCOLN SCHOOL TUNNEL COMP N21E

DAMPING VALUES ARE 0, 2. 5. 10 AND 20 PERCENT OF CRITICAL

PERIOD (sees)

RESPONSE SPECTRUM, TAFT N21E

200

-4--*-~ 100

--+---#-¥--¥-~ 80

',~d--r:---+o.L-l 60

20

10

8

6

4

2

~~-+-...,jL:-..A I

~f.'--' .8

.6

.4

Ref: CIT/EERL 72-80 PLATE C-8

82

KERN C~UNTY. CALIFORNIA EARTHQUAKE JULY 21. 1952 - 0453 PDT

t) Q)

~ c

>-I-U 0 -.J W >

IIIAOOij 52.002.0 TAFT LINC~LN SCH~OL TUNNEL COMP S69E

DAMPING VALUES ARE O. 2. 5. 10 AND 20 PERCENT OF CRITICAL

6

:2

I t---''VI'---'''<-lf<--::¥#-f-

.13 1-f--j-->~tM~+-:-~¥--l;.L-

PERIOD (sees)

RESPONSE SPECTRUM, TAFT N69E

200

~--,.f--¥-l 100

-+--cJ'--'l('---¥---/ 80

.~~-r----P'<:1"--1 60

20

10

8

6

4

Ref: CIT/EERL 72-80 PLATE C-9

83

KERN C~UNTY, CALIFORNIA EARTHQUAKE JULY 21. 1952 - 0453 POT

u Q)

< c

>-I-U 0 -.J W >

2

IIIAOOij 52.002.0 TAFT LINCOLN SCHOOL TUNNEL COMP VERT

DAMPING VALUES ARE O. 2. 5. 10 AND 20 PERCENT OF CRITICAL

200

~~~IOO

-+--#-¥-....j,.L----I 80

_~...,4_-+-~'__l 60

20

10

8

6

4

2

~~_,L_..,jL:>..A 1 1 1--'>..I<--''-<---lr.4-l1,lL-l,1-

.8~~~~~~~~~~~~~~~~~~~~~~~~~ £..-4-'<---1 .8

.6

PERIOD (sees)

RESPONSE SPEC'I'RUM, TAFT Vertical

Ref: CIT/EERL 72-80 PLATE C-lO

84

CMONTANA

• ~'_~_'F_O'_" ______ ~ PAL

T,

Qat (

\

* @:lZ: 6-1-';5 Epicent.r location, jnfen'it)'-MOdi'led·~K'b~ _____ ~~L_._2.=1!Y.~==:::I::;:j=::_.:s~C!~..f~L_L __ "':~':...LLJ.!J-!..."':::.1~~~~J

Mercolli and dot. of occurrence, ~

~(~ Doshed where opprollimalely located

~ ••• Dashed where approximate,y loeafed, Fault dotted where concea led

Not,,:

I) Geoloo)' " simplified from Ro .. ,.t 01 (1955). To simplify, geologic mop unit, on the obove loorc. mop hovt betn groupedj culture, ,'reoml, and mi~'or rock and ollu vlum outcrops havt betn deleted.

2) eron-Itetion M-t .... 'e ~hown on FlO. 13-!5.

3' EarlhqlJokt magnltudn and eplc.nlral locations or. 'rc'm U.S. GeoloQicol Survey filn (unpublilhld I.

4) Additi(lrlOl eplc,M.r. are listed in Tobl' 13A-1 and appeor on the G'OloQlc Mop for Moniano Stat, lJnivenlfy, Bozeman, Montano, FiO. 10-4, (Section 10 0' th I, Volume I.

EXPLANATION

B :~:=~=::!~:JKlI'~~:'::= ~ rOCln. QO' and SO"" okler alluvIum of PliO--cent 00"

MeSOloic vol conic rockl; inch,teU"', tome Tar"ory voiconio rock •.

GEOLOGIC MAP Giociol drift, Quot.fnorv mOOt. a Metalolc Hdim,ntoryrockl

SCIENCE AND LIBRARY BUILDING Volcanic rock" Tertiary in oQ"

·Stdlm.ntar), rock-,. rlttlor)' in oOt.

Coar" grained Intru.lv. roeh, "'rflary in ~ ••

rri("b1 Boulder batholith and broadly r,lot,d L...:..::'-I ,tach, T.rliory-Cretoc'oul in 091

M"OIOic intru,lv. rock'

Poleoloic: rock., undiffertntiot,d

precambrian rock., undlfftrenflott!

Ref: N U REG / C R·O 98 5, VoL 3

85

CARROLL COLLEGE HELENA, MONTANA

PLATE C-11

OJ 0\

M

Southwest

Ti

Carrol I College

Accelerograph Station

(1.5 Mi les Southeast)

M'

Northeast

~------------------------------------------------------------------------------~------~'-----------------------La ::0 (!) t-h

Z C ::0 tr:l 0 "-n ::0 I 0 \0 00 Ul

<: 0 f-'

W

EXPLANATION

~Alluvium, Pleistocene and Recent in age (Qal)

~ Tertiary deposits, undifferentiated (Ts)

~ Intrusive rocks, Tertiary-Cretaceous in age (TKb)

~ Volcanic rocks, Tertiary -Cretaceous in age (Tv.)

~ Sedimentary rocks, Jurassic-Cretaceous in age (PAL)

~ Sedimentary rocks, Devoni~n-Cambrian in age (PAL)

~ Sedimentary rocks, Cambrian in age (PAL)

I p€u I Sedimentary rocks, Precambrian in age; Belt Series ( p€)

Contact between geologic units, dashed

where approximate or inferred

Fault, dashed where approximate or inferred

Modified after Pardee and Schrader (1933)

o 4 6

Scale in mile~

Notes: I) For cross-section location see Fig. 13-4.

2) Abbreviations in parentheses refer to geologic symbols shown on Fig. 13-4.

::0 CD Hl .. \.) HELENR. MONTRNR ERRTHQURKE OCT 31. 1935 - 1138 MST H 1-3 I I8025 35.001.0 HELENR. MONTRNR CRRROLL COLLEGE COMP NOOE "-txj

(!) PERK VRLUES : RCCEL = 143.5 CM/SEC/SEC VELOCITY = 7.3 CM/SEC DISPL = 1.4 eM txj ::0 -250 t"I

.....:J :0 IV nn I 3: n Ul ....... rn 0 (fl'

0 fTlrn n:JJ Ztl:o fTl-i no-<

0

1-3 z H 3: 250 I txj I

-8 ~ ::c H

(Xl (fJ -..J 1-3

0 ::0 < ><: n r11 , 3:' ....... o-tt:

(fl n p.; ...... txj -i t"I -< txj Z ~

Z 0

-2 0 txj

0

(j)

-U , 0 n:O

3:n rn

'U 3: t"I rn ?

21 ~

z 1-3 -1

txj

\.) I 0 10 20 30 40 50 i-'

TIME - SECONDS w

::u CD HELENR, MONTRNR ERRTHQURKE OCT 31, 1935 - 1138 MST t-h ..

IIB025 35.001.0 HELENR. M~NTRNR CRRR~LL C~LLEGE C~MP N90E ()

(!) PERK VRLUES : RCCEL = 1 L12 .5 CM/SEC/SEC VEL~CITY = -13.3 CM/SEC OISPL - -3.7 eM H -1-3 -250 "-tr::I tr::I :n ::u

~~ t"'

.....:J IV 0 I n :::0

U1 ~:n 0 rn'-;

n~

250 1-3 -20 ' H :s:

R tr::I I !-::r:

n~ 00 H 00 (j)

.A 1-3 0 :r .

0 r---', wrv

'V ~~ :;0 ~~ 0-<: ,

!- 4

::r: tr::I 20 ! t"' tr::I z -4 ::t:>

z \0

0

0 (f)

tr::I -p t-

O ~~ ~ ~ y

'"d t"' 4 ::t:> 1-3 0 10 20 30 40 50 tr::I TIME - SEC~NOS () I

...... 01::>

:;0 (!) I-il

HELENR. MONTRNR ERRTHQURKE OCT 31. 1935 - 1138 MST (J II8025 35.001.0 HELENR. MONTRNR CRRROLL COLLEGE COMP Up H f-3 (!) PER~~ VRLUES : nr"r-rl n..., r ............... ..- ........................ VELOCITY = -9.5 CMISEC DISPL - 2.8 eM -....... HLLC.L = Ol.:l LM/Jl:L/Jl:L -

tr:l -90 tr:l :;0

:0 t"i n -...J

~~ tv I 0 Ul

~~ 0

~ t-c3 H

90 :s: i:J:j ! -10 :r:

H (/)

t-c3 00 0 -< 1.0 :;0

~~ K; , 0 :r: a tr:l t"

lJ' tr:l s; <: (!) -li '1 rt 1-" ()

0

OJ Ul f--' -u

r 0 n:o

::;:: n' m ~

"Cl ~ t"i

-i

~ lil t-c3

tr:l 0 10 20 30 liD 50 (J TIME - SECONDS I f--' Ul

200

100

80

60

40

20

(j Q) U)

'-.... 10 c .- 8

>- 6 r-U 4 0 -l W >

2

HELENR. M~NTRNR ERRTHQURKE ~CT 31. 1935 - 1138 MST

1119025 35.001.0 HELENA. MONTANA CARROLL COLLEGE COMP NOOE

DAMPING VALUES ARE 0, 2. 5. 10 AND 20 PERCENT OF CRITICAL

200

100

80

60

40

20

10

8

6

4

2

L..-.t?"---'I . 8

.6

.2

.04 .0608 1 .4 .6.8 1

PERIOD (sees)

RESPONSE SPECTRUM, HELENA NOOE

Ref: CIT/EERL 73-80 PLATE C-16

90

u Q)

< C

>-r-0 0 ...J W >

HELENA, M~NTANA EARTHQUAKE ~CT 31, 1935 - 1138 MST

J IJ6025 35.001.0 HELENA. MONTANA CARROLL COLLEGE COMP N90E

DAMPING VALUES AAE 0, 2, S, 10 AND 20 PERCENT OF CRITICAL

200 200

100 i--''l<f-~*," -&---,f--""X'-I I 0 0

80 F-'--+->' ___ t<'-'~-t- -+-~~----IrL-....-i 80

60 i-----k-:.,£---h-----h:-:"*:

20

10 8

6

4

2

I f---"vHjl+-fj'HF---Y---t­

.8~-~~~~-+-~~-+'---*

PERIOD (sees)

~d---/-------I'if--l 60

20

10

8

6

4

2

"---t~-i . 8

.6

.4

RESPONSE SPECTRUM, HELENA N90E

Ref: CIT/EERL 73-80 PLATE C-17

91

u (l) (/)

.......... c::

>-r-U 0 ..-.J W >

200

HELENR, M~NTRNR ERRTHQURKE ~CT 31, 1935 - 1138 MST

1[[8025 35.001.0 HELENA. MONTANA CARROLL COLLEGE COMP lJp

DAMP[NG VALUES ARE 0, 2, S. 10 AND 20 PERCENT OF CR[TICAL

200

1 00 I---'>..f-"<-"""'" -d'--n'----'X"-l 100

so F-+-"'<-'b<'-'''l7:-+- -+~--*--y"---l SO

60 1--+--,,L-h-4c--A<6 ,~--r'----r'---f>-d-----4 60

20

10

S

6

4

2

~~~~~~~~~~,,~~~IO

~~~~~~~~~L-~~~~~~~~~~~~~~~~+-~~~~S

"=--'~l\---I'<-7"--1~--k--c~-r---7"-~7"--i6

II---'>~~~~~ ~.~~~,L-~~~~~~~r-¥-~~~~~~ ~~-7~~~ I .8 .S

.6

4

. 1 L.lcilillJ..L..C.L.u..iliLu...L.LLLJ...Lll.L1...i.'..LLLi.W.ilii.LJ.L.LL.J...J.1..u..LL.LLLLLLlJ..LL.L.LLLL.l.li":-w.J.L.J...::-U-"':':"'"7.w....L...L.U...I;:;:--'-'-'-' . I .04 .06 .OS .1 .2 .4

PERIOD (sees)

RESPONSE SPECTRUM, HELENA Vertical

Ref: CIT/EERL 73-S0 PLATE C-lS

92

;;0 (])

-I,

::z c ;;0

rrI G)

'-n ;;0

I a ~ a :: Ui .S U1

c: .2

<: '; .. 0 w

I-'

\0 W

." l> ::.0 s: 0 -a " r 1> Z

)::> --I ::.0 -I

rrI s:: ::.0 0 ", n Z en

I-' --I ",

'" ::.0 < 0 ::.0

K

North

5000-

4000-

Qao

: .. 0 .. > 0

<> ::E

Tfv QOQ Qal

.~ .. ::: a: c: o E ;; "-

Accelerograph Station ~(80rlno 8-3 and 8-3A

II Qal QaO

.. co

" 0:

~ 0 N

" 0 "-~

0

e " c: <I

c: 0 C/l

·tt~~sS~~D ... C .. ·ti'8';=··~··'~-~~I_ \/ /, ,/ I

2000

1000

G) rT'1 1-' 0 5 G) ()

() :::0 0 en en

I en ", ()

--I 0 Z

~ I ~

\/ /\

(Jl ~ <1l 0 ct> Ii :1-1

c;:to (l) Q o Pl l-lri-o ...,-

Otl 0 !-'-::s ()

0 ~H:I III "dO ~ Ii

0 t:-I(Jl

~~ (l) (f.l

::r:~ ~ri-

CO ...,-!:JO <D (Jl

::s

Z~ 0 ~ . I-'

./ \ \ / "-

\\. .... l I "I \\\ /' qm

/" \ \/ /\

I - --\

EXPLANATION

Recent [Oail Alluvial grovel, sand,and silt, includes some playa '---' clay in the Son Andreas fault zone (001) 2

Pleistocene I Qoal Older alluvial granitic sand and grovel (OP)

Pliocene I Tasl Anaverde Formation; arkosic sandstone with some shale and conglomerate. Occurs in San Andreas fault zone.( Ts)

{a Fiss Fanglomerate; CObble-boulder fanglomerate (Ts)

Miocene (?)

I TOhl Gem Hill Formation; pyroclastic rocks including lithic tuff and tuff breccia (Tv)

Mesozoic 6 Dominantly quartz monzonite ranging in composition to granOdiorite (gr)

0 Complex of gneiss and granitic rocks with overage Precambrian (?) composition of granodiorite (p-€g)

Notes:

v· " f' .. co 5 a:

:: South

.. > .. c: ~ I- -5000

-4000

~ 3000 5!.

.S

" 0

2000 0 > .. w

1000

MSL

I) See Fig.2-19 for plan view of geologic cross-section K -K I

2) Abbreviations in parentheses refer to geologic symbols used on Fig 2-19

3) See Fig. 2-29 for log of baring B-3 and B-3A

o Horizontal scale in miles

Vertical exaggeration 2 X

2

;;0 SAN FERNANDO EARTHQUAKE FEB 9, 1971 - 0600 PST CD I I (J207 71 .175.0 RESERV(JIR. FRIRM(JNT RESERV(JIR, CAL. C(JMP N56E -n

(!) PEAK VALUES: ACCEL = -6~.7 CM/SEC/SEC VEL(JCITY = 3.8 CM/SEC DISPL = -1.2 CM ("") -65 ....... -I -I D '" ....... ,,8 IT! 3: IT! IT! 3rn ;;0 I ;:J;. r :c 0 (T1 rn

....... C) :J)

-....J U'l ......::n

..j:::. -I g:{-I 10

0 ....... 0

01 7-J :z 01 -<

-n 65 )::0 .......

-4 ;:0 3: 0 Z

1.0 -I < *" orn :;0

IT! 0 3' ...... 0-

U'l (J) n ["Il (T1 .......

:;0 0-1

< ~

0 ....... :;0

4 z

-2 U1 Q)

["Il 0

U) \J • ""'Cl 0 o::n • 3: n-

)::0 rn -I ~

IT! rn :z

("") -I

I N 2 0 0 10 20 30 ~O 50 60

TIME - SECONDS

I

~ ACCELERATION ~ VELCICITY DISPLACEMENT

CM/SEC/SEC CM/SEC CM

~c ! l ~ ~f5 u

r-~ ...

3: ;:j' (Y) _J Z 0_

I- (n (f")CLeJ

--1 --1 /I --1~ o....~ u

0 0 u (D Li.J

- (j) o ..J ~:::: a: _ ... u u

(n .--i • •

r-- ~ 0:> mOil

~ --1 --1 ! I --1~ .--i > a: >_ W f--

m (f") >-... Wu a:D

o:::l _J (f")

W I- LJJ 0 l.L z '> z o ~ 0

~ u a: W ....... (f")

W a: t...l ~ l..L t~ 0 1

cr .~:J ::J a: Li.J

(Y)W ~ o ..... tr) .......

I 0 :i: l-I- > t...l a: a: cr~ w W r-

a:cn 0 I 0 Z 0 II

-l --1 J> --1 I~ --1~ cr-Z l.() _.J

a: r- t~ w'-;u l.L _ CI:

r-Z cr (f") r- (l)

o LLJ ~ ::J ....... _.J ..... CI:

~ ~ b ~ ~ -is :> ~c cr: LLJ CL E:)

0

0 0 o 0 0 o N 0 N 0 o - ..... I - ..... I

I

TIME.HISTORY, FAIRMONT RESERVOIR, N34 W PLATE C"21 Ref: CIT/EERL 74-55

95

;::0 CD SRN FERNRNDO ERRTHQURKE FEB 9, 1971 - 0600 PST -n

IICl207 71 .175.0 RESERVClIR, FRIRMCINT RESERVClIR. CRl. CCIMP UP () C9 PERK VRLUES : RCCEL = -32.9 CM/SEC/SEC VELCICITY = 3.4 CM/SEC DISPl = -1.7 eM 1--1 -35 -l-l -..... 1--1

f'T13:: n f'T1 f'T1 on ;::0 1 3: n r ::c ....... fTI

...... Ull -....,J Vl 0 fTlfTI

0:0 +=>-l ....... n 10 Ul---i

(J1 ;::0 "Tl .......

(J1 -< '0 :z:

""T1 35 )::> 1--1

;::0 -4 3:: 0

\0 Z 0'\ -l <

;::0 ofTI 3: 1

f'T1 ....... 0 Vl 0 Ul n f'T1 fTl ....... ;::0 0---i

< -< 0 1--1

;::0

4 < CD -2 "")

c-t-...... CJ (') Q) (f)

--' -u r

0 on n fTI 3: fTI Z

\J ---i r )::>

-l 2 f'T1 0 10 20 30 40 50 60

() TIME - SECCINDS I

N N

0 Q)

< c:

>-r-U 0 --.J W >

200

SAN FERNAND~ EARTHQUAKE FEB 9. 1971 - 0600 PST

1110207 71.175.0 RESERVOIR. FAIRMONT RESERVOIR. CAL. COHP N56E

DAMPING VALUES fiRE D. 2. 5. 10 AND 20 PERCENT OF CRITICAL

200

I 00 I----->,rf---".--!"oo~ ~O flO F-+->o.--!J,<"-"'tr,-+-

-&,-...,.f--Y-I 100

~~--~~~~~-~~~--~~~r/~~~~~-¥~80

60 t---h:7''--f'o<:--t-V''l'<.,'¢ -+-+<-"''--__I~__f>.c_-.p.,~+__r_~'--__I~__!>'''' u,-+I<~ ______ ---;>O">"__l 60

;w 20

10 10

8 8

6 6

4 4

2 2

1~~~~~,.M~~~-~~~~~-~~~~~~~~~~~rr~~1 .8 .8

("\---4-+..-l .6

PERIOD (sees)

RESPONSE SPECTRUM, FAIRMONT RESERVOIR, N56E

Ref: CIT/EERL 74-84 PLATE C-23

97

u Q)

< c

>-r-U 0 ..J W >

6

4

2

SAN FERNAND~ EARTHQUAKE FEB 9, 1971 - 0600 PST 1110207 71.175.0 RESERVOIR. FAIRMONT RESERVOIR. CAL. COHP N3ijW

DAMPING VALUES ARE O. 2. 5. 10 AND 20 PERCENT OF CRITICAL

200

*--*-"-¥-I 100

-I-~¥---i.o'---I 80

,~...,L--+-~L...j 60

20

10

8

6

4

2

I~~~~~~W~~~~~~~~~~~~~~~~~~'~~~~~I .8 .8

.6

.4

PERIOD (sees)

RESPONSE SPECTRUM, FAIRMONT RESERVOIR, N34W

Ref: CIT/EERL 74-84 PLATE C-24

98

Ref:

u <l>

.z c:

>-I-U 0 ....J W >

SAN FERNANDO EARTHQUAKE FEB g, 1971 - 0600 PST llHJ207 71.175.0 RESERVOIR. FAIRMONT RESERVOIR. CAL. COMP LP

DAMPING VALUES ARE 0, 2, 5, 10 AND 20 PERCENT OF CRITICAL

20

I 0 f--"wf'-'~r.--,.

8 F-'--+-".....--'ht"-'''i'r-+-

~-,f-~ 10

~~~-~~~~~~+-·~~~~~~~~~~~,~~~8

6 ~-k-...£.....-..l'-<--~"". ~~~---~~+r-~~~~~~--~~~ ·~~~~~~6

2 2

I

.S

.6

.4

.2

.1 .1

.OS .08

.06 .06

.()4 .04

.02

.01 .01 .06.08.1

PERIOD (sees)

RESPONSE SPECTRUM, FAIRMONT RESERVOIR, Vertical

CIT/EERL 74-84 PLATE C-25

99

15 I~' IIIroo'

Bokersfiel

15'

·o.oOArvin

g.,1 ... ... ~~ ". '" · .. ~/ .... .. ...

Qf

35-00'

o J 4

D I.. I..

~r s

45

001

°Loncaster

I~' 45' 30' 15'

Ref

EXPLANATION

~ Alluvium, Recent in 00'; inc Iud" dun. d.~t •.

~ Stream channel, fan, and boIin do~'it;. RICent in 00"

~ Loke deposits, OI..at.rnOfY in 0Qe.

~ Marine deposits, marine ond nonmarine terroct deposit., Quottfnory in 091; include. upper Pliocene marine dePOSits.

I QP I Nonmarine stdimtntory depotit., Plio·Pleisto'" c;ene in ooe.

~ VoIcCJ"lc rodr.s and ign.ous intrusive rocks, Tertiary in 001·

I T. I Sidim .... tV;)i ;V;:;;., iil~;u;J' iii u\ji.

* Sej,mOQrOph St'ltion locotion.

~=5.7 Epicenter location, Richt ... moonitude, 6-5-60 and date of occurr~.

Foults that hovt moYtd dlM'inQ Quaternary time C withOut historic record (awaa. post 2 million

y.:lrs)

• Foult. that havt moved d .... ina historic time (approx. 200 year.) .

NOTES:

I) GeoIocn' is sim"lifitd from Jennings and StNl"ld (1969). Smith (1964), ROQtrS (1967), and Jennings, Burn.tt and Troxel (1962). To slm"hfy, geologtC map units cr'I:

th~ above source maps hove been grO~i culture, 5treom~, and minor rock and alluvium outcrops hOve been deleted. Mojor fault. shown on source mo", hovt been revised 11"1 Qccordonee with JenninQl (19731.

2) Information on fault aetivity (Quaternary activity, Historicaetivity) is from Jennings (1973). The seismic activity sYl'!'lbols, os used on this figure, do not

Location of GeoIOQ'" Map

N

Q:] Sedimentary rocks, Cr.toe.OUI in GOt.

~ MQtoloic ttdirnentory roctts; also includes metamorpltic rocks.

[Z] M.sozoic granitic rockSj olso lneludH pre-Cenozoic: ~omorphie, lIolconic, and ultramafic: rock •.

c:J Metamorphic: and. metasedimentary rock., pre -Cr.toc:~a 1ft 09fi.

I • I s.dimentory and volcanic ro<:kl, Paleozoic in ogt.

~ PrtcQmbrion igneous and metamorphic rocksi inelude. crystalline rocks w!'lie'" may be os young 01 Mesozoic.

~/-Dashed where approxi mottl,. loeatld. Contact

_ .. r· Dashed where ot:\ptOximot.ly Iocotid, dotted

Fault where conceal.d, queried where .xist.ne, is unCirtain.

.............. ,.. Barbs on upper plott, dashed where oPCW"QI:i-

TO ...... Fault motety !oeattd, dotted where concealed.

~ Cross-section location. Section. H-H',I-t', J-J', I(-K', L-L', and M-M' ore thown respectively on FiO_ 2-20 through F;;. 2-~.

neeessarily mean that the entire ItnQth of tht foult shows ~idenee of tha ~espectivt' octivity. (SH JenninGS, 1973, for detail.).

3) Individual faults within tna San Al'I(jrtolo fouIt 20nt show evidence of Quaternary and Historic actiVity (See J.nninQS, 1973, for detoils).

4) Heavy border on boxes indieates units thot aQpIOl" on this figtJre.

5} Plan .. ~ of cros.-sec:hon H-tt IS also shown a"I Fig. 2-1.

6) Earthquake rnoQni tude and ~tral Ioeohan are fram Huds(Wuial (J974a).

o~-= __ c=~~======~~ ________ ..;~

Seal. in millS

o ~ 15 20

Scale In kIlometers

GEOLOGIC MAP NORTHERN MOUNTAINS DISTRICT

SOUTHERN CALIFORNIA LAKE HUGHES NO. 1

PLATE C-26

NUREG/CR-0055, Vol. 1 FIG. 2-19

101

;:0 CD -n

z L c: . -

;:0 rTl North CIl

0

~ ., .. ......... Q:

n C ;:0 I 5000-

0

.~ 0

0 CIl "-0 rTl (}1 0 40QO-(}1 r

0 • Qol

CIl :!. Coo

<: ...... .£

0 n " .£

Vl ~ 2000

. ~ .. " .'."

,/ /,

rTl . I-' n ... I qm

-l 0 ....... 1000 W 0

I ,/ - --I "

\ Z ,/

MSL

r r )::> 0 A (f) G) jTj

l> IT! :r: Z r 0 c: G) » r CIl IT! /\:0 :r: r IT!G)

Recent

Pleistocene

rTl r IT! I(") c..n » (f) C(")

z A (") G):::o 0 IT! 0 IO

I .." 1TI(j)

I-' C - (j)(f)

::0 »1 G) !TI ::o(f) I :::0 IT! ITI ~ »(") (f)

""0 ~ -<----i

r 0

Pliocene

Mesozoic

Precambnan (7 )

)::> 0 ZZ -i Z 9 rTl r

Z I n 9 r_ I

N ai '-l

Qal

? .\ t \

'/,,\~ \

'- I ?

.. " II

.::: Lake Hughes Arroy No. I

~ occelerogroph .totion

,/ 1"-

qm

and Berino B- 4

I Qol

,~

/, c· I Tas-ta J-~~ rf~ qm

\./ \ /'

\./ I qm / \ r ,/ ~./ / /"

/"

EXPLANATION

Alluvial gravel, sand, and silt, include s some playa cloy in the San Andreas fault zone (001) 2

Older alluvial granitic sand and gravel (OP)

Anaverde Formation j arkosic sandstone with some shale and conglomerate. Occurs in San Andreas fault zone.( Ts)

Dominantly quartz monzonite ranging in composition to granodiorite (gr)

Complex of gneiss and granitic rocks with average composition of oranodiorite (p£g)

" .. '" a Q:

Notes:

L' South

-5000

-4000 ~ ..

2000

1000

I) See FiQ.2-19 for plan view of QeoloQic cross-section L -L' .

2) Abbreviations in parentheses refer to geoiooic symbols used on FiQ. 2-19.

3) See Fig. 2-30 for 10Q of berinQ 8-4.

0=====-____ ==========2-HOrilontal scale in miles

VerticO! exo;oeration 2X ,"

:! .: " .£

~ • III

:;;0

ro --t, SRN FERNRNDO ERRTHQURKE FEB 9, 1971 0600 PST -

IIJ141 71.152.0 LRKE HUGHES. RRRRY STRTION 1. CRL. COMP N21E ()

~ (!) PERK VRLUES : RCCEL = -145.5 CM/SEc/SEC VELOCITY = 18.0 CM/SEC DISPL 3.4 CM ---I -250 "-£"T1 £"T1 :::D

n :;;0 nn r 3 m ;:;;, fT1 m

'-I -I 0 n:JJ ~ ....... ":::D I 3: ~-I

U1 £"T1 n ....... N I 0

:z ::I: ....... Vl -1250 0

-" ~ -20

0

"" r ;x::. < A n[T1 £"T1 3'

0 ,,0 ::I: Ul n-

fT1 ....... c: n-l G) --< ::I: £"T1 Vl

z 20 0

-4 I-'

Z 0

N (f) I-' --u £"T1

, 0 n :::D

3 n m 3:

\J m r :z ;x::. -I -I £"T1

4 40 50 60 () 0 10 20 30

I N OJ

TI ME - SECONDS

o 01

;;0

ro --n

n ....... --I -rr1 rr1 --I r

-.....J ~ I

U1 N

\J r > --I rr1

n I

N

'"

-250

--I ...... 3: rr1

I :r:

0

SAN FERNANDO EARTHQUAKE FEB 9, 1971 - 0600 PST IIJ141 71.152.0 LRKE HUGHES, RRRAY STATI~N 1. CRL. C~MP S59E

(!) PERK VRLUES: RCCEL = 108.9 CM/SEC/SEC VEUJC ITY = -lli.li CM/SEC D I SPL = -2.9 CM

:n nn 3: n ,fTl (J)' ITI rn n::D ':n ~--l n ........

o Z

~2cn LI ____ ~ ______ ~ ____ ~ ______ ~ ____ _L ______ L_ ____ ~ ____ ~ ______ ~ ____ _L ______ L_ ____ _L ____ _

--I ...JU

~-20 r ~ 0 r·....A~ ! A! ~. ~ A A.AJVi'<'IA '" """'" -~ ~ - ~ ~ -<

nrn 3:' -..... GL (J) n ITI ........ n--l

-<

I ~"I~''I)1f''iiVV'" V' "'i'W V"V v-~ '=7

20L L ____ -L ____ ~ ______ L_ ____ ~ ____ ~ ____ _L ____ ~ ______ L_ ____ ~ ____ ~ ____ _L ____ ~ ____ _

:z: 0

-4 -" CJ (/)

Ul 0"> IJ

'" r rr1 0 n :n

3:n rn 3: rn z

lil

--l

20 30 0 10 liD 50 50 TIME - SECONDS

Al CD -t, SRN FERNRND~ ERRTHQURKE FEB 9. 1971 - 0600 PST

I IJ141 71.152.0 LAKE HUGHES, ARRAY STATI~N 1, CAL. C~MP D~WN ()

(!) PEAK VALUES : ACCEL = -93.0 CM/SEC/SEC ....... VEL~CITY = -11.7 CM/SEC OISPL = -2.9 CM -l -95 ........ rr1 rr1 D Al nr> I zr>

,fT1 ~ -l U)I

I"TI fTI +:> ....... 0 n:o I 3: ':n

U1 rr1 ~-i N I n ......

::r:: 0 ....... z (/)

-l 95 0

.... Al

:< -20 0 0'1 I

::t::> < A nfTI rr1 z' 0 ,0

::r:: r> c I"TI ..... GJ n-i ::r:: -< rr1 (/)

z 20 0

~ -4

0 <: CD (f)

-s \) , ri- nD -0 ...... 0 zr>

I () fTI ::t::> OJ ~ -l fTI rr1 Z

-i ()

I 4 w 0 0 10 20 30 40 50 60

T I ME - SECDNOS

u Q)

Z c

>-f-U 0 ....J W >

SAN FERNANDO EARTHQUAKE FEB 9. 1971 - 0600 PST

200

IIIJ1UI 71.152.0 LAKE HUGHES. RRRAY STATION I. CAL. COMP N21E

DAMPING VALUES ARE O. 2. 5. 10 AND 20 PERCENT Of CRITICAL

I 00 ~I!f-"~'r.

400

200

-&--,.f--"*-I 100

80 F--t->-o:--1bf->'tr:-+- -+-~-¥--Ir'---t 80

60 I--~"--f~~~. ,~~-+--f>.o~ 60

20 20

10 10

E! 8

Ei 6

4 4

'. t. 2

'W-~;-r-+-'V'-t I

.EI Ff-~~~""'h~'Jf--V--~.f-h~~Hh·~Hr'-~:-t~-t><~rl-~ ",,"~"--I7"'---l .8

.6

.4

PERIOD (sees)

RES PO N S ESP E C T R U r1, LA K E HUG H E S NO.1, N 2 1 E

Ref: CIT/EERL 74-82 PLATE C -31

107

u Q)

Z c

>-I-U 0 .-J W >

10

8

6

4

2

SAN FERNANDO EARTHQUAKE FEB 9, 1971 - 0600 PST

IIIJ1~1 71.152.0 LAKE HUGHES. ARRAY STATION 1. CAL. COMP S69E

DAMPING VALUES ARE O. 2. 5. 10 AND 20 PERCENT OF CRITICAL

200

~-,.f--¥--l 100

--+-~¥--V-~ 80

,~+-ryL----I'o-L-l 60

20

10

8

6

4

2

I~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~I .8 .8

.6

.4

PERIOD (sees)

RESPONSE SPECTRUM, LAKE HUGHES NO.1, S69E

Ref: CIT/EERL 74-82 PLATE C-32

108

u Q)

--( c

>-I-U 0 .-l W >

200

SAN FERNANOO EARTHQUAKE FEB 9. 1971 - 0600 PST

IIIJ1~1 71.152.0 LA~E HUGHES. ARRAY STATI~N 1. CAL. COMP DOWN

DAMPING VALUES ARE O. 2. 5. 10 AND 20 PERCENT ~F CRITICAL

200

1 00 f---->.wf-'~...,.

80 F-'-.......,.,~~~-

~-,.f-->x<--l 100

-+-4-¥--¥---j 80

60 f---+<-->~....-~~. ,~7"'--+-~L.-j 6 0

20 20

10 10

8 8

6 6

4 4

2 2

'-+-~L,.L--,lL-~ 1 1 1--->~~fI:--Jl--I­

.8~~~~~~~~~~~~~~~~~~~~~~~~cTr L.-J"'<-'~ . 8

.6

.4

PERIOD (sees)

RESPONSE SPECTRUM, LAKE HUGHES NO.1, Vertical

Ref: CITjEERL 74-82 PLATE C-33

109

35·00'

45'

Qf

..... ... ....

I~'

... ...

•.. ...

45' ,>, , .. , Of

... c··-o ~-.--.p. ..

0 J 4

\I £ Oaf

0 P

I. , " It

Y

s Oaf

• Lancaster

001

..

EXPLANATION

* ~'7.7 7-~2

o

•

Alluvium, HoIOCeM in 000. iM:ludn ctuN dtpQIit •.

StrtOm channel, fon, and ba.m depo.its, HoI~ift ....

Morin, deposits, mari,. and nonmariM t«rOOt dlpoItt., Quottrnal') in GOt; ir'ICludH upper Pfioeen, marine deposit •.

Nonmarine HdimtntOf'1 cttPOIi .. , Ptio-Pteilto­ceM in 0fI.

VolCanic rocks and iO_ous intrusi'll rDCkl, Tertiary in 0Qt.

AceelerOQrQl:lh Station to'c:otion

Epictnf.r location, Richter magnitdde. and dot, of occurrence.

FOUIh: tbot have moved ciur'in~ Ouoten\ary t .. witncl.lt historic record (apptClt. post 2 million yeo,.) .

FOults that ha .... moved during hi,toric time (approx.. 200 ,.ar. ) .

NOTES: I) GeoloQy IS simplified from Smith (1964), JenninQ't Burnett. and Troxel (19s2). JeMin;s CI'Id Strand (1969), Jonn;ng.(1962). Rogon(1961), and Rogers (1965). To simplify, QIOIogtc mop ~its on the abotte ICUtce maos hewe bten 9fCUPed; culture, .treOlM. and m.nor roct and alluvium outcrops hOve been deloted. Major foutts shown on source mcJ;le have been reviled in accordance with ....... (1975).

2) Information en foult octivity (Qua'ernory octivit.y, historic activity) i. from ~nni. {J975,. ".. Mtsmic aetivi ty ''1n1M1., 01 UMd on thO fi;unt, do ftIOt

Location 0/ Geologic Map

CROSS-SECTIO>I a FIG. NO.

Santa Felieta Dam F-F' !H4

Old Ridge Ro>ito G·G' ~.~

...--........../­Contoet

~ •• 1·. Fault

SecSIMent.ary rocke, Cr.toc:.toJl, in GOt.

MelOzoic ttdimentary rocQ,.ollo inch .. l'Retomorpl\ic rock •.

Mesozoic granitic rOCk.; au .nclud. ",. .. -Cenozoic mttGmorptlic, .,otcaniC, end ultramafl~ rocks

Metcmorphic and ..... tosedi,..,.tory rOCk., pre-Crttaceous in 001.

gedilllentor'1 a,~ wotconie racks, Polecaic

" .... ~brian jqneous and lIIItamorphtc !'tICks; includes tr:,s,alline tQC.ks wtMc:~ lID)' De aa )'OdnQ as Mesozoic.

00 ..... Vfhere approxitRcltely toc:at.C, .... ...... CClnctcUf'd, queritd wtIt ... ex .. ..".. i • ...,toin .

Barbs on ~·ptote,.dosIWd ...... awoai­moleW ~ted, donN where concealed.

Location oppraxilnHe.

I'ICCtUGrily IRtOn that ". enti,. ...,., of tht fault _ .. _ of ""_; .. action,. (900

~ ,I97S, for 4Itoils) .

3) tndividual f'o.Jlt. _thin. tt. 9cwt ....... fault .zIIN sholl' .,.... tsf QuQ'terRor,. _ htdaric octlrit.s, (Set Jlnniftg., 197'!5,. '. *toILt).

4) Heavy border ..... indical.a .... lIMIt· ..... an thiI figure.

5l Ea,,..,.. ...... itudft.and ~I I8ot..,... ... frcn Hl.:deon,"'al.tf8S9-m7&lJ .. :tI)._ Hi~1 of 01. (1913),

o 10 15

Scale In kilOfMter.

SoblPlOrnw contour Inter.ol 1500 fWf

N

Lake Hu;"- Arrey StattOn 12- >rH'

laM Hu9hH Array 9tatlQtl4 I-I'

5·16

5-17 GEOLOGlC MAP

LAKE HUGHES REGION CALIFORNIA

Ref

LAKE HUGHES NO.4 PLATE C-34

NUREGjCR-0055 Vol. 2 FIG. 5-13

I

1

111

I

:; {l. 2 ":; i g 0

4OlXJ' .::

2OfX)' - . - . - P~ • ..

Sea Lw~!

5 r en l> w ;:a " ro » rn -t,

Z :I: r- (j) ::D rr1 C

Z 7' r G) C -0 rr1 rr1 :I: ;:a r rr1 rr1 ):::> :r: en en (i) -I C - rr1 (i) (')

l> () :r: 0 ;0 () rr1 C ::u I I Vl Z ::u

0 w -i l> 0 Ul z :< -< Ul 0 Ul

(') en .j::> l> -i

< r l> 0 -i

." 0 0 :::0 2:

N Z - ~ 1>

G) IT1 0 r 0 G)

(')

(') ::u 0 CJ) CJ)

I CJ)

IT1 (') -i 0 Z

H I

H

I' lake Huohes Array No.4

Accelerooraph Station ~ o

N -~ ~ ." c <

qm c

~ ,,, I

, I " ' " I ". ,. ',' qii, ,- QoI , qm' , I.. 'qm , " l' 1·, I ",.' , , , , ' . \ . . " 'f4000

gn.\".' t, ,', ,-Iii,', 2000 ., ' • 1 ~ ) ... 1 ' 1 ' .. l '. \', \ ., '\" .' \, ,. \. \ ,I"" ........

1-) .. 11,1, l,i.t,\",\ \/\'\. •. ' 't_.-\ ,_ .'~ ,,' Sea

I( (\..~( ... <.0 c: 0 G> ._ ()-20 ~E

o .. _c:

EXPLANATION

~ Alluvium; gravel, sand, and silt{Qal)

Vasquez Formation; non-marine sandstone, siltstone, and shale (Ts)

~ g IEPl Marine sandstone and shale (Ts) .... L::...J go WCl.

1f ~ Quartz monzonite; ranges in compoSition to oranodiorite(gr)

;; f"Qnl Gneiss and granitic rocks with an average composition of I ~ granodiorite (p€g)

('-. I

.gl Il ~ Pol""" Soh;" ("'OJ

Modified from Dibble. ( 1961 )

Nates:

I) Abbreviations in parentheses refer to geologic symbols used on Fig. 5-13.

21 For plan view of crass-section see Fig. 5-13.

Scale In mileos

-" -" ~

CJ ........ -250 -l -....... ["Tl

["Tl

:;;0 r

-...J 0 """ltMI i -"'" -l I ........

U"1 3: N ["Tl

I

:c

SRN FERNRNOO ERRTHQURKE FEB 9. 1971 - 0600 PST IIJ142 71.065.0 LRKE HUGHES. RRRRY STRTION 4. CRL. COMP S69E

(!) PERK VRLUES: RCCEL = 168.2 CM/SEc/SEC VELOCITY = 5.3 CM/SEC OISPL = 1.2 CM

:0 n nn

:Xrn 'r ffirn n:::D ':0 lJ')-t !TI_ na

Z

~250L----------L----------~---------L----------~---------L----------~--------~--------~ -l o -6 :;;0

-<

r ::t::-7' ["Tl 0 :c c G)

:c ["Tl

Vl 6

z 0 -2

-"'" u

Vl 0'1 1.0 ["Tl 0

-0 r ::t::-

2 -t ["Tl

CJ I

W 0'1

< nrn :X' ,a lJ') n !TI ...... n-t ~

0 5 10 15 20 25 30 35 40 TIME - SECONDS

lJ'1

;;0 CD -t,

CJ >-i

-I -250 ........ rn rn ;;0 r

-....,J

+:> 0 I -I

U1 >-i

N3: rn I

:r:

~250 -I 0-10 ;;0

-<

r >-A

0 fT1

:r: c

J ~ :r: rn V'l

::z: 0 -2

+:>

V'l N

SRN FERNRNDO ERRTHQURKE FEB 9, 1971 - 0600 PST IIJ142 71.065.0 LRKE HUGHES, RRRRY STRTION 4. CRL. COMP S21W

C) PERK VRLUES: RCCEL = -143.5 CM/SEc/SEC VELOCITY = -8.6 CM/SEC D I SPL = 1.7 CM

:D nn 3;n '- rn Ull rnrn nJJ '- :n ~ -I no

Z

o (J) -u I ......

~ 0 ~~ __ ~~ __ ~~ ____ ~~ __ ~ ____ ~ __ -.~~ __ ~ ____ ~~ ____ ~ __ ~ ____ ~~ __ ~~ __ ~ __ n D " :3:n

-u r >-

21 -I rn

CJ 0 5 10 I

W -....,J

15 20 25 TIME - SECONDS

30 35

rn ~ rn z -I

40

;0 ro -I>

SRN FERNRNDO ERRTHQURKE FEB 9, 1971 - 0600 PST CJ IIJ142 71.065.0 LRKE HUGHES. RRRRY STRTI~N 4. CRL. C~MP O~WN .......

(!) PERK VRLUES : RCCEL = 150.8 CM/SEc/SEC VEL~C I T Y = -6.8 CM/SEC OISPL = 1.6 CM -l -rr1 -250

rr1 :D ;0

nn , :r;n ,CTI

-....,J (J)I -+:> fTI CTI

0 n:D I -l ':D U1 ....... (J)-t

N 3: fTI ...... rr1 no I Z :c .......

~250 0 ;0 -8 .... -< ....

Q) , < )::> nCTI

A 3:' rr1 ,0

0 (J) ('") fTI ...... :c n-t c

-< GJ :c rr1 (j')

:z: 8 0

-2 -+:>

0

<: (J) .."

ro I ., n:D c-+ 0 3:('")

CTI ..... ~ () rn

'"OAl Z , ....... -t )::>

-l rr1 2 CJ 0 5 10 15 20 25 30 35 40 I T I t1E - SEC~NDS w

co

u Q)

~ c

>-r-U 0 ...J W >

SAN FERNANDO EARTHQUAKE FEB 9. 1971 - 0600 PST II IJlij2 71.065.0 L.AKE HUGHES. ARRAY STATIGN ij. CAL. CGMP S69E

DAMPING VALUES ARE O. 2. 5. 10 AND 20 PERCENT GF CRITICAL

200 200

I 00 ~,.f-->~"'"

EIO 1=-'--+--"~!o.L-'>4r-+-

~~--*-~"-l 100

-+~~~-+L--l 80

,-A.d-~L-4>..."L----l 6 0

2:0

10

8

6

4

2

I f--''vI'ft'k-w-.llII'¥-+

.. 8 f+--f-f<--Il

PERIOD (sees)

RESPONSE SPECTRUM, LAKE HUGHES NO.4, S69E

20

10

8

6

4

2

.L-.f.,L---1 .8

.6

.4

Ref: CITjEERL 74-82 PLATE C-39

117

u <l>

~ c

>-I-U 0 ....J W >

10

8

6

4

2

SAN FERNANDO EARTHQUAKE FEB 9, 1971 - 0600 PST

IIIJJl.I2 71.065.0 LAKE tiUGHES. RRRAY STATIflN 1,1. CAL. CflMP S21W

DRMPING VRLUES RRE D. 2. 5. 10 AND 20 PERCENT Of CRITICRL

200

~-*-¥-IIOO

-I-#-¥--J,L..-I 80

,~~+-~C--I 60

20

10

8

6

4

2

I 1---"~1r-4~F'-+­ -I-~-+-...,jL-~ I

.8 r:;..L..!p...-I.g:.>{-+""'P~-!,.L---"l'{-~4~Hh~~~~4~~~rl-; ,--+.,<---1 .8

.6

PERIOD (secs)

RESPONSE SPECTRUM, LAKE HUGHES NO.4, S21W

Ref: CIT/EERL 74-82 PLATE C-40

118

(..l Q)

~ C

>-I-U 0 -1 W >

SAN FERNAND~ ERRTHQUAKE FEB 9, 1971 - 0600 PST IIIJlij2 71.065.0 L.AKE HUGHES. ARRAY STATION ij. CAL. COMP DOWN

DAMP I NG VALUES FIRE O. 2. 5. 1 0 AND 20 PERCENT OF CR IT I CAL

200 200

I()O~~~;"'" ~-,f--"><"-4 100

-+-~¥---\.L---I 80 130 F-'--+-"..--IIl'-'>q<,-+-

20

10

8

6

4

2

PERIOD (sees)

,~+--r-~L-1 60

20

10

8

6

4

2

'+-:""--+-~'-<A I

L..-t,£----l .8

.6

.4

RESPONSE SPECTRUM, LAKE HUGES NO. 4, Vertic~l

Ref: CIT/EERL 74-82 PLATE C-41

119

1. Report No. I 2. Government Accession No. 3. Recipient's Catalog No.

NASA CR-170415

4. Title and Subtitle 5. Report Date

Investigation of Seismicity and Related Effects November 1985 at NASA Ames-Dryden Flight Research Facility, 6. Performing Organization Code Computer Center, Edwards, California

7. Author(s) 8. Performing Organization Report No. Robert D. Cousineau, Richard Crook, Jr. , and L-1615-F David J. Leeds

10. Work Unit No.

9. Performing Organization Name and Address Soils International San Gabriel, California 11. Contract or Grant No.

NCA2-0R283-304

13. Type of Report and Period Covered

12. Sponsoring Agency Name and Address Contractor Report - Final

National Aeronautics and Space Administration 14. Sponsoring Agency Code Washington, D.C. 20546

15. Supplementary Notes

NASA Technical Monitor: Karl F. Anderson, NASA Ames Research Center, Dryden Flight Research Facility, Edwards, California 93523-5000

16. Abstract

This report discusses a geological and seismological investigation of the NASA Ames-Dryden Flight Research Facility site at Edwards, California. Results are presented as seismic design criteria, with design values of the per-tinent ground motion parameters, probability of recurrence, and recommended analogous time-history accelerograms with their corresponding spectra. The recommendations apply spe-cifically to the Dryden site and should not be extrapolated to other sites with varying foundation and geologic con-ditions or different seismic environments.

17. Key Words (Suggested by Author(s)) 18. Distribution Statement

Earth-motion modeling Unclassified - Unlimited Earthquake Seismicity Wave propagation in soil

STAR category 42

19. Security Classif. (of this report) 20. Security Classif. (of t~is page) 21. No. of Pages 22. Price'

Unclassified Unclassified 130 A07

*For sale by the National Technical Information Service, Springfield, Virginia 22161.

End of: Document