000011944 001__ 11944
000011944 005__ 20141205160003.0
000011944 04107 $$aeng
000011944 046__ $$k2008-10-12
000011944 100__ $$aTsuno, Seiji
000011944 24500 $$aSuperficial S-Wave Velocity and Damping Factor Model Determined by the Masw Measurement in the Grenoble Sedimentary Basin

000011944 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011944 260__ $$b
000011944 506__ $$arestricted
000011944 520__ $$2eng$$aIn order to understand and predict earthquake ground motions at high frequencies, it is necessary to evaluate a superficial S-wave velocity structure. In the Grenoble basin, several geotechnical and geophysical surveys have been carried out for estimating the deep velocity structure. However, the superficial velocity profiles have not been obtained in enough detail for allowing reliable numerical predictions of ground motion for frequencies above 1 Hz. Therefore, we have applied the MASW technique using the High-Resolution method to estimate S-wave velocity structure at the uppermost 50 meters of sedimentary layers. The estimated S-wave velocity structure by the genetic inversion algorithm indicates that the soft soil sediment (less than Vs 400-500 m/s) is more deeply deposit in the middle-east of Grenoble than in other areas. Finally, we made a 3D S-wave velocity model for the uppermost layers that will be used for high frequency ground motion predictions in the Grenoble sedimentary basin. Moreover, we proposed a method for determining quality factors of superficial layers by using MASW recording data. The quality factors of S-waves determined by waveform inversion are about 15 within a frequency range from 5 to 50 Hz. We also discuss on the usefulness of joint inversion between a fundamental mode and higher modes.

000011944 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011944 653__ $$aS-wave velocity, Quality factor, The MASW Measurement, The Grenoble Basin and Superficial velocity profile 

000011944 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011944 720__ $$aTsuno, Seiji$$iCornou, Cécile$$iBard, Pierre-Yves
000011944 8560_ $$ffischerc@itam.cas.cz
000011944 8564_ $$s964884$$uhttps://invenio.itam.cas.cz/record/11944/files/03-03-0017.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 03-03-0017.
000011944 962__ $$r9324
000011944 980__ $$aPAPER