2008年西藏当雄6.6级地震精确定位及研究

英文篇名：Precise Location of Dangxiong,Tibet M6.6 Earthquake in 2008
中文刊名：山西地震
英文刊名：Earthquake Research in Shanxi
作者：高锦瑞 ; 沈小七 ; 李佳辑 ; 米玛次仁 ; 罗炬
英文作者：GAO Jin-rui1 ; SHENG Xiao-qi1 ; 2 ; LI Jia-ji1 ; MI Ma-ci-ren1 ; LUO Ju1(1.Earthquake Administration of Tibet Autonomous Region ; Lhasa ; Tibet 850000 ; China ; 2.Earthquake Administration of Anhui Province ; Hefei ; Anhui 230031 ; China)
中文关键词：西藏当雄6.6级地震 ; b值 ; 双差定位
英文关键词：Dangxiong earthquake ; Tibet ; b-value ; Double difference location
出版日期：2010-04-15
机构：西藏自治区地震局;安徽省地震局;
年：2010
期：02
出版单位：山西地震

摘要

使用双差地震定位法对2008年10月6日西藏当雄6.6级地震序列重新定位,得到1 461个地震的定位结果。发现,重新定位后地震序列的分布更加集中,且明显呈NS向条带状分布,与该区域的活动构造走向基本一致,精确定位后的断层走向和震源机制解的走向也吻合。对该序列的b值随深度的变化情况进行分析统计,认为西藏该地区的地壳分层应分为4~5层较合适。
The sequence of Dangxiong M6.6 earthquake on Oct.6th,2008 has been relocated using double difference location method in this paper.The obtained location results of 1461 earthquakes indicate that the earthquake sequence distribution after relocation is more centralized,and presents obvious striped distribution in NS direction,which is basically consistent with the active tectonic strike in this region and focus mechanism solution.The analysis and statistics of b-value variation of the sequence with depth indicate that it is more reasonable to divide the crust of Tebit region into 45 layers.

引文

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[2]杨智娴,陈运泰,郑月军,等.双差地震定位法在我国中西部地区地震精确定位中的应用[J].中国科学,2003(增刊):129-134.