| 2008年西藏当雄6.6级地震精确定位及研究 |
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| 引用本文： | 高锦瑞,沈小七,李佳辑,米玛次仁,罗炬.2008年西藏当雄6.6级地震精确定位及研究[J].山西地震,2010(2):8-11. |
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| 作者姓名： | 高锦瑞 沈小七 李佳辑 米玛次仁 罗炬 |
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| 作者单位： | 1. 西藏自治区地震局,西藏,拉萨,850000
2. 西藏自治区地震局,西藏,拉萨,850000;安徽省地震局,安徽,合肥,230031 |
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| 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。
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| 关 键 词： | 西藏当雄6.6级地震 b值 双差定位 |
Precise Location of Dangxiong, Tibet M6.6 Earthquake in 2008 |
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| GAO Jin-rui,SHENG Xiao-qi,LI Jia-ji,MI Ma-ci-ren,LUO Ju.Precise Location of Dangxiong, Tibet M6.6 Earthquake in 2008[J].Earthquake Research in Shanxi,2010(2):8-11. |
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| Authors: | GAO Jin-rui SHENG Xiao-qi LI Jia-ji MI Ma-ci-ren LUO Ju |
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| Institution: | 1.Earthquake Administration of Tibet Autonomous Region,Lhasa,Tibet 850000,China;2.Earthquake Administration of Anhui Province,Hefei,Anhui 230031,China) |
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| Abstract: | 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. |
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| Keywords: | Dangxiong earthquake Tibet b-value Double difference location |
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