HR: 0803h
AN: NS11D-0797    [Abstracts]
TI: Shear-Wave Structure Model of Venetian Plane, Italy, From Seismic Noise Measurements
AU: * Boaga, J
EM: jacopo.boaga@unipd.it
AF: Dept. of Geoscience - University of Padua Italy, Via Giotto, 1, Padova, Ita 35122, Italy
AU: Iliceto, V
EM: vittorio.iliceto@unipd.it
AF: Dept. of Geoscience - University of Padua Italy, Via Giotto, 1, Padova, Ita 35122, Italy
AB: We have measured fundamental mode Rayleigh wave group velocity dispersion from noise cross correlation between 2 stations. We focused on near surface shear wave structure, with short inter-distance and short time acquisition. The aim of the study was the use of seismic noise to define a realistic upper subsoil structure model, in order to compute a deterministic seismic hazard scenario. We considered different station location and the contribute of several noise sources like sea-wave and the anthropic ones. We analysed the Rayleigh group velocity dispersion with the FTAN method (Frequency-Time ANalysis, Levshin et al 1972,1992). The Venetian plane area (Italy) velocity model inverted is consistent with the known lithology, and in agreement with previous seismic measurements.
DE: 0935 Seismic methods (3025, 7294)
DE: 0999 General or miscellaneous
DE: 7255 Surface waves and free oscillations
DE: 7299 General or miscellaneous
SC: Near-Surface Geophysics [NS]
MN: 2007 Fall Meeting