Agreement INGV-DPC 2007-2009

Project S4: ITALIAN STRONG MOTION DATA BASE

TASK 3 Site characterization with surface waves methods

RU8-GFZin cooperation with RU1-MiPv

& RU5-Unibas

Siena meeting, 28-29 April 2010

EDL 24bit + Mark L4C-3D 1Hz

The instrumentation

Example of array 2D

ESAC (Aki, 1957)

FK (Lacoss et al., 1969; Capon, 1969)

Rayleigh waves dispersion curve

HVSR

+(Nogoshi and Igarashi 1971, Nakamura, 1989)

(Parolai et al. 2005)Joint Inversion (GA)

S-waves velocity profile

Just a summary of the methods ...

Site Station Code

Norcia NRZI

Grumento Nuova

GRM

Sant Arcangelo SNA

Lagonegro LGN

Cattolica CTL

Argenta ARG

Faenza FAZ

Modena MDN

Novellara NVL

Bevagna BVG

Bazzano BZZ

Onna ONNA

12 Investigated sites

VS30 = 557 m/s

NRZI - NORCIA

RAN

f0 = 0.72 Hz

GRM – Grumento Nova

VS30 = 282 m/sca.100 m

RANf0 = 0.59 Hz

ca.100 m

SNA – Sant’Arcangelo

VS30 = 419 m/sRANf0 = 0.34 Hz

LGN – Lagonegro

VS30 = 451 m/sRAN

CTL - Cattolica

VS30 = 208 m/sRAN

ca.250 m

f0 = 1.16 Hz

ARG - Argenta

VS30 = 170 m/sRANf1 = 0.98 Hz

f0 = 0.34 Hz

FAZ - FAENZA

VS30 = 292 m/sRAN

ca.70 m

MDN - Modena

VS30 = 212 m/sRANf0 = 0.65 Hz

NVL - Novellara

VS30 = 190 m/s

RAN

f0 = 0.65 Hz

Deliverable 6

BVG - BEVAGNA

VS30 = 160 m/sf0 = 0.35 Hzf1 = 1.22 Hz

BZZ - BAZZANO

VS30 = 679 m/sRAN

ONNA

VS30 = 378 m/sf0 = 2.5 Hz

Summary ...

... and thanks for the attention!

Site Station Code

Subsoil Class fo (Hz)

Norcia NRZI B 0.72Grumento

Nuova GRM C 0.59

Sant Arcangelo SNA B 0.34

Lagonegro LGN B -

Cattolica CTL C 1.16Argenta ARG D 0.98Faenza FAZ C -

Modena MDN C 0.65Novellara NVL C 0.65Bevagna BVG D 1.22Bazzano BZZ B -

Onna ONNA B 2.5