地震的震源机制解的计算和分析  

M≥3.5 Earthquake focal mechanism solution calculation and analysis since 2008 in Qinghai Dachaidan region

作　　者：屠泓为[1] 赵燕杰[2] 文勇[2] 孟鑫[2] 

机构地区：[1]青海省地震局,西宁青海810001 [2]青海省地震局德令哈地震台,德令哈青海817000

出　　处：《地球物理学进展》2012年第1期68-74,共7页Progress in Geophysics

基　　金：中国地震局星火计划(XH12051Y);青海省地震科学基金(2009B05)资助

摘　　要：本文根据大柴旦周围40余个地震监测台站记录到的P波初动及部分S波初动等信息计算了2008年以来大柴旦50余次M3.5级以上的地震,其中合理的得出了46个震源机制解,通过与哈佛给出的结果分析了两次6级地震震源机制解的可靠性,同时讨论了中小震的震源机制解特性,并对区域的应力场进行了估算,得到了较为合理的结果,为该区域的地震研究提供一定参考.In this paper, according about 40 seismic monitoring stations＇ recorded around Dachaidan of Qinghai provice, Use P wave first motion and part of S wave first motion information to calculate the focal mechanism solution. Collected 50 times M≥3. 5 since 2008 of Dachaidan region, but only get 46 reasonably focal mechanism solutions, compared with Harvard＇s solution by two M≥6, the results that our focal mechanism solutions is reliability. So use the mechanism solutions of we have calculated to discuss the characteristics, and estimate the region stress field, and got a series of reasonable results, provide meaningful reference to study the region.

关 键 词：2008以来 青海大柴旦 震源机制 计算 分析 

分 类 号：P315[天文地球—地震学]