000011152 001__ 11152
000011152 005__ 20141205155841.0
000011152 04107 $$aeng
000011152 046__ $$k2008-10-12
000011152 100__ $$aNavarro, M.
000011152 24500 $$aAnalysis of Site Effects and Their Correlation with Damage Distribution Observed During the Colima (Mexico) Earthquake of January 21, 2003

000011152 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011152 260__ $$b
000011152 506__ $$arestricted
000011152 520__ $$2eng$$aIn order to evaluate the influence of ground condition on damage distribution in Villa de Alvarez town (Colima, Mexico) during the 2003 Colima earthquake ( MW=7.8), several geophysical surveys were carried out. The structure of shallow sedimentary materials and the depth of the basement have been estimated applying the Spatial Autocorrelation method (SPAC), using several regular pentagonal arrays with radii up to 25m. Seven Swave velocity (VS) profiles have been inverted in Villa de Alvarez by using Rayleigh wave velocity dispersion curves for depths down to 30m. According to the local shallow structures obtained, we find clear lateral variations in the velocity structure for several urban zones that are correlated with different damage level. Microtremor measurements were recorded at 70 sites with a grid of about 100m x 100m interval across damaged area. The horizontal-to-vertical spectral ratios (HVSR) were determined in order to obtain the predominant period for each site. The predominant period range in the studied zone is about 0.1 – 0.6sec. Shorter predominant periods (0.1-0.2sec) were found in damaged zone whereas larger periods (greater than 0.4sec) were obtained in urban areas without damage. The site effects and their correlation with damage distribution on masonry structures observed during the 2003 Colima earthquake were very clear and remarkable. One of the main results has been that masonry houses with one or two storeys located on soils with dominant period around 0.15sec in Villa de Alvarez, showed the most serious damages.

000011152 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011152 653__ $$aSoil conditions, Microtremor, SPAC, Shear velocity profile, site effects.

000011152 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011152 720__ $$aNavarro, M.$$iEnomoto, T.$$iYamamoto, T.$$iGarcía-Jerez, A.$$iVidal, F.$$iBretón, M.
000011152 8560_ $$ffischerc@itam.cas.cz
000011152 8564_ $$s289579$$uhttps://invenio.itam.cas.cz/record/11152/files/03-03-0052.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 03-03-0052.
000011152 962__ $$r9324
000011152 980__ $$aPAPER