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。

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]

中国地震局地震预测研究所基本科研业务专项（02092428）资助