000009568 001__ 9568
000009568 005__ 20141205150219.0
000009568 04107 $$aeng
000009568 046__ $$k2008-10-12
000009568 100__ $$aBonnefoy-Claudet, Sylvette
000009568 24500 $$aPotentiality of Microtremor to Evaluate Site Effects at Shallow Depths in the Deep Basin of Santiago De Chile

000009568 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000009568 260__ $$b
000009568 506__ $$arestricted
000009568 520__ $$2eng$$aAmbient noise arrays measurements were performed in the deep basin of Santiago de Chile (Chile) where site effects were clearly revealed by the 1985 Valparaiso earthquake. The significant seismic intensities reported for one-storey houses outlined the resonance of a shallow soft sedimentary layer during the Valparaiso earthquake. We look for testing the Horizontal-to-Vertical spectral ratio (H/V) and the more complex array techniques HRFK (High Resolution Frequency-wavenumber method) as a tool to provide qualitative and quantitative information of site effects for the top most soil layers. Although we show the robustness of the H/V method to map the fundamental resonance frequency of the deep basin, we outline its limitation to identify the resonance frequency at shallow depths. We conclude by emphasizing that the H/V method alone may not be enough to assess the seismic hazard in urban area especially when there is a large variety of building type: from small-size residential houses to high rise business buildings. We also show that small-size arrays measurement are a powerful tool to provide the site effect estimates (resonance frequency and amplification factor) for the shallow sedimentary layers.

000009568 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009568 653__ $$aSite effects, microtremor, H/V, arrays technique, Santiago de Chile

000009568 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000009568 720__ $$aBonnefoy-Claudet, Sylvette$$iLeyton, Felipe$$iBaize, Stephane$$iBerge-Thierry, Catherine$$iBonilla, Fabian$$iCampos, Jaime
000009568 8560_ $$ffischerc@itam.cas.cz
000009568 8564_ $$s291263$$uhttps://invenio.itam.cas.cz/record/9568/files/07-0094.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 07-0094.
000009568 962__ $$r9324
000009568 980__ $$aPAPER