期刊
ENGINEERING GEOLOGY
卷 161, 期 -, 页码 26-33出版社
ELSEVIER
DOI: 10.1016/j.enggeo.2013.04.009
关键词
Microtremors; Resonance frequency; Surface geology; Macroseismic intensities
资金
- Fondecyt [1100551]
- Millennium Nucleus of Seismotectonics and Seismic Hazard
Nowadays, microtremors' horizontal-to-vertical spectral ratio (HVSR) has been extensively used in the estimation of the predominant vibration frequency of soils, mainly for microzonation purposes. In the present study, we show results from extensive microtremor measurements performed at the cities of Talca and Curico, Central Chile. We found a strong correlation between surface geology and microtremors' HVSR, even in complex geological settings. Considering the damage produced by the 2010 Maule earthquake (Mw 8.8), we also estimated high-density macroseismic intensities at these cities, with values ranging from VI up to VIII on the MSK64 scale. We believe that the main responsible of these variations are the surface geological conditions, also reflected in the variations of the resonance frequencies of the soils. The evidence presented here supports the use of microtremors' HVSR in combination with surface geology to improve seismic microzonation studies, particularly in an Andean context. (C) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据