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松散浅层结构的地震噪声探测综述
王伟君1,2, 陈棋福3, 陈凌3
1.中国科学技术大学地球与空间科学学院,合肥金寨路96号230026;2.中国地震局地震预测研究所,北京复兴路63号100036;3.中国科学院地质与地球物理研究所,北京100029
摘要:
地表松散的浅层结构是造成地震场地作用、加剧强震破坏的主要因素。通过探测了解浅层结构是评估场地作用、进行场地分类、预防和减轻地震灾害的重要环节。地震噪声随时随地存在,其能量分布在很宽的频带范围内,故近几年地震噪声探测被广泛应用于深层和浅层结构研究。在地表浅层结构研究中,相对于主动源探测,利用地震噪声可以比较廉价地实现较深范围的探测,并适用于更多的场地。本文将概述地震噪声浅层探测的数据采集方式和几种常用的数据处理方法,及其最近几年的发展趋势。
关键词:  浅层结构探测 地震噪声
DOI:
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基金项目:中国地震局地震预测研究所基本科研业务专项(02092428)资助
Review on near-surface soft structure investigation with seismic noise
Wang Weijun1,2, Chen Qifu3, Chen Ling3
1.School of Earth and Space Science, University of Science and Technology of China, Hefei 230026, China;2.Institute of Earthquake Science, China Earthquake Administration, Beijing 100036, China;3.Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
Abstract:
The near-surface soft structures can cause the seismic site effects which are the main reasons to intensify the earthquake hazard. So the investigation of the near-surface structure is a key step to site effects evaluation, site classification and seismic hazard prevention and reduction. Seismic noises are extensively used as sources in deep and shallow structures studies in recent years because they exist anytime and anywhere with relative wide spectral energy distribution. The investigation of shallow structure with seismic noise can be economically performed to deeper range comparing to active source exploration, and can be carried out in noisy site. This paper shortly reviews the most typical noise exploration methods in shallow structures, including data collection, processing and their most recent development.[著者文摘]
Key words:  Near-surface structure investigation Seismic noise