Long period microtremors, microseisms and earthquake damage: Northridge, CA, earthquake of 17 January 1994

被引：39
作者：
Trifunac, MD [1 ]
Todorovska, MI [1 ]
机构：
[1] Univ So Calif, Dept Civil Engn, Los Angeles, CA 90089 USA
来源：
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING | 2000年 / 19卷 / 04期
关键词：
Northridge earthquake; microtremors; microseisms; ambient noise; site amplification; site response; microzonation; seismic hazard; seismic hazard mapping;
D O I：
10.1016/S0267-7261(00)00013-0
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
Contour maps of site amplification at long periods (3-10 s), estimated from recorded ambient noise in San Fernando Valley, are compared with simple indicators of the strong motion amplitudes and damage from the 1994 Northridge, CA, earthquake. The results show that there is no simple correlation between these two sets of observations. Ambient noise measurements have been successful in identifying the model parameters of full-scale structures, and may become successful in identifying parameters of soil and sedimentary layers that are related to strong motion site amplification in the near field, but new methods of measurement and analysis are needed to achieve that. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：253 / 267
页数：15
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