geode tics

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What is Geodetics?Geodesy,also namedgeodetics, a branch ofEarth Sciences, is the scientific discipline that deals with the measurement and representation of theEarth.

Geodesists also studygeodynamical phenomenacrustalmotionTides

polar motion

Geodesy (fromGreek

o

, l t. "

v

on of th

E rth")

pr m r ly conc

n n

th n th

t

mpor llyv ry n

r v ty f

l

Thr

D v on of G

o

yPhy c l G

o

yTh

Stu

y of th

E rth Gr v ty F

l

Thr

D v on of G

o

yH

h

r G

o

yconc

rn

th m

ur n

th

E rth on th

lob l c l

Pr ct c l or En

n

r n

G

o

y

conc

rn

th m

ur

n

p

c

f

c p

rt

or r

on

of th

E

rth,

n

h

ch

nclu

urv

y n

.H

tory of G

o

yHum n ty h l

y b

n nt

r

t

n th

E rth.Dur n

v

ry

rly t m

th nt

r

t

l m t

, n tur lly, to th

mm

t

v c n ty of hom

n

r

ncy, n

th

f ct th t

l v

on n

r ph

r c l

lob

m y or m y not h v

b

n pp r

nt.

H tory of G

o

yA hum n ty

v

lop

, o

t nt

r

t n un

r t n

n

n

m pp n

th

z

, h p

, n

compo t on of th

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th

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ll

n c Worl

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of th

f

ur

of th

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th

h

v

n phy c l

om

p nn n

ov

r t

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ll

n c

orl

Dur n

th

E rly Gr

k t

o p

cul t on r

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voc t

by Hom

rSph

r c l bo

y po tul t

by Pyth

or It

upport

by Ar totl

ft

r 100 yr An x m

n

, c

nt t, b

l

v

tron

ly th t th

rth

r

ct n

ul r n h p

.H

ll

n c Worl

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ypt, Er to th

n

,

r

k c

nt t n

ph lo oph

r,

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ur

th

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r

nc

of th

rth n

obt n

r

ult of 40,008 km

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on

u

l

o m

ur

th

z

of th

E

rth u

n

th

St

r C

nopu

Anc

nt In

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In

n m th

m t c nAry bh t (AD 476 - 550)

p on

r ofm th

m t c l tronomy

bl

to

cr b

th

rth

b

n

ph

r c l n

th t t rot t

on t x

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th

z

of th

rth ccur t

to 1%Expl n

ho

lun r n

ol r

cl p

h pp

n n

l o ho

th

moon h n

by r

fl

ct n

unl

htEurop

J

n P c r

p

rform

th

f r t mo

rn m

r

n rc m

ur

m

nt n 1699-1670 n

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C n l t

r cont nu

th

ork of J

n P c r

n

foun

out th t th

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not ph

r

but r th

r n

ll p o

n h p

.

Th

19th C

nturyC

ntr l Bur

u for Int

rn t on l G

o

y

t bl h

byAu tr -Hun

ry n

G

rm n

8/3/2019 Geode Tics

2/6

y. On

of t mo t mport nt

o l

th

r v t on of n nt

rn t on l

ll p o

n

r v ty formul

h ch houl

b

opt m l not only forEurop

but l o for th

hol

orl

.

I u

n

Controv

r

on th

put

l n

D

f n t on r

f rock, n

b r, or oth

r f

tur

ly n

b

n

th th

urf c

of th

t

r ( xf thom or l

t lo

t

r)R

f r

r

ult fromAb ot c Proc

po t onof n

,

v

ro onpl nn n

o

n rock outcrop , n

oth

r n tur l proc

R

f

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f

I l

t A v

ry m ll l n

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(or l n

) th t

nc rcl

l

oonp rt lly or compl

t

ly.Top f v

l r

t Atoll n th

Worl

S y

M lh B nk, W

t

rnIn

n Oc

n(35000km) , ubm

r

, l

t

pth 7 m,L n

o

n

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t ofN

C l

on (21000km), ubm

r

, l

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pth 3.7 mGr

t Ch

o B nk(12642km, l n

r

only 4.5km)

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(8866km), ubm

r

, l

t

pth 9 mM ccl

f

l

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(6448km), ubm

r

, l

t

pth 9.2 mNorth B nk (R tch

B nk, north ofS y

M lh B nk)(5800km), ubm

r

, l

t

pth

8/3/2019 Geode Tics

3/6

M l y : P rt of th

t t

ofS b h;Ph l pp n

: P rt ofP l

nprov nc

;R

publ c of Ch n (T

n): P rt ofK oh un

mun c p l ty;V

tn m: P rt ofKhnh H Prov nc

.

Ecolo

yCor l r

f r

th

pr

om n nt tructur

of th

l n

; th

Spr tly

roup cont n ov

r 600 cor l r

f n tot l.L ttl

v

t t on

ro

on th

l n

,

h ch r

ubj

ct to nt

n

mon oon .L r

r l n

r

c p bl

of upport n

trop c l for

t, crub for

t,co t l cru

b n

r

.Ecolo

yItu Ab I l n

r

port

ly cov

r

th hrub ,coconut, n

m n

rov

n 1938;p n

ppl

l o cult v t

h

r

h

n t

prof t bl

Oth

r ccount m

nt onp p y ,b n n ,p lm, n

v

n

h t

p

ch tr

ro

n

on on

l n

Ecolo

yTh

l n

th t

o h v

v

t t on prov

mport nt h b t t for m ny

b r

n

turtl

Gr

n S

Turtl

H

k b ll S

Turtl

Ecolo

yS

b r

u

th

l n

for r

t n

, br

n

, n

nt

r n

t

Sp

c

foun

h

r

nclu

Str

k

Sh

r

t

rBro

n BoobyR

-Foot

BoobyGr

t Cr

t

T

rnWh t

T

rnS

b r

Ecolo

c l H z r

Pol t c l n t b l ty, tour m n

th

ncr

n

n

u tr l z t on of n

hbor n

countr

h

l

to

r ou

rupt on of n t v

flor n

f un ,ov

r-

xplo t t onof n tur l r

ourc

, n

nv ronm

nt l pollut on.Ecolo

c l H z r

D

rupt on of n

t n

r

by hum n ct v ty or by ntro

uc

n m l , uch

o

, h

r

uc

th

numb

r of turtl

n

t n

on th

l n

S

turtl

r

l o l u

ht

r

for foo

on

n f c nt c l

St ll th

Ch n

Gov

rnm

nt

v

prot

ct on for th turtl

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c l H z r

H

vy comm

rc l f

h n

n th

r

on ncur oth

r probl

m F h

rm

n u

Pot um Cy n

olut on for f h po on n

M l t ry

roup n th

Spr tly h v

n

n

nv ronm

nt lly

m

n

ct v t

uch hoot n

turtl

n

b r

, r

n

n

t , n

f h n

th

xplo v

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c l H z r

Th

coll

ct on of r r

m

c n l pl nt , coll

ct n

of

oo

n

hunt n

for th

l

l f

tr

r

common thr

t to th

b o

v

r ty of th

nt r

r

on, nclu

n

th

l n

.Cor l h b t t r

thr

t

n

by pollut on, ov

r-

xplo t t on of f h n

nv

rt

br t

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r phyTh

f r t po

bl

hum n nt

r ct on

th th

Spr tly I l n

t

b ck b

t

n

8/3/2019 Geode Tics

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600 BCE to 3 BCETh b

on th

th

or

t c l m

r t on p tt

rn of th

p

opl

ofN nyu

( outh

rnCh n n

north

rn V