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PRECISE LOCATING OF JIASHI, XINJIANG EARTHQUAKE BY USING INVERSION METHOD
Author(s): PAN Suzhen, ZHANG Xiankang, YANG Zhuoxin, ZHANG Chengke, DUAN Yonghong, ZHAO Jinren, JIA Shixu
Pages: 153-
160
Year: 2004
Issue:
1
Journal: SEISMOLOGY AND GEOLOGY
Keyword: 地震定位; 广义反演; 伽师地震;
Abstract: 运用一种广义反演方法,在任意垂向非均匀介质中,根据近震P,S波到时来确定地震事件空间位置的概率分布,应用此方法对新疆伽师地区临时数字地震台网的资料进行了定位处理,发现所定位的地震在平面图上呈明显的NNW向和NNE向线性分布,其中NNW向趋势略为明显.同时讨论了伽师地震的深部构造背景,对伽师地区天然地震的定位结果显示了地震与断裂的密切关联,该震群的形成与震源区附近的隐伏断裂有关,这可能是塔里木盆地北缘的地壳剧烈变形及现今构造运动所造成的结果,这些复杂的构造格局和特殊环境为伽师强震群的孕育和发生提供了条件.
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