腾冲地震台数字地震记录S波分裂研究

英文篇名：Study on the Shear Wave at Tengchong Seismic Station
中文刊名：地震研究
英文刊名：Journal of Seismological Research
作者：毛慧玲 ; 秦嘉政
英文作者：MAO Hui-ling ; QIN Jia-zhen(Earthquake Administration of Yunnan Province ; Kunming 650224 ; Yunnan ; China)
中文关键词：横波分裂 ; 裂隙各向异性 ; 延迟时间 ; 腾冲地区
英文关键词：shear wave splitting ; extensive-dilatancy anisotropy ; delay time ; Tengchong area
出版日期：2011-10-15
机构：云南省地震局;
年：2011
期：04
出版单位：地震研究

摘要

对2000～2010年腾冲地震台数字地震资料进行S波分裂研究,得到了腾冲地区不同时间段内的应力优势方向和S波延迟时间。结果表明,其快波偏振方向主要集中在NE30°～55°,这与该区的主应力场方向基本一致。横波分裂延迟时间能为地震预报和区域应力场研究提供有用的信息。
Using the digital data from 2002 to 2010 recorded by Tengchong Seismic Station,we conducted a shear wave splitting and obtained the predominant direction of stress and the delay time of shear wave in different stages from 2002 to 2010 in Tengchong.Further,we found that the predominant polarization direction was in NE30°-55°,agreeing with the one of the regional principal compressive stress.The delay time of the shear wave provides useful information for the study of the regional stress field and the earthquakes prediction.

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