| 吴忠、灵武地区地震的精确定位和中强地震的发震构造 |
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| 引用本文： | 赵卫明,金延龙,刘秀景,许文俊.吴忠、灵武地区地震的精确定位和中强地震的发震构造[J].内陆地震,1998(4). |
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| 作者姓名： | 赵卫明 金延龙 刘秀景 许文俊 |
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| 作者单位： | 宁夏回族自治区地震局!银川750001 |
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| 摘 要： | 应用射线追踪方法及由震源参数和速度联合反演获得的地壳速度结构， 对吴忠、灵武地区１９８２～１９９３ 年发生的全部地震进行了精确定位。根据该地区中强地震序列的空间分布特征、震源机制和地震烈度考察结果，对４ 次中强地震的发震机制进行了探讨。认为１９８８年１ 月４ 日灵武５．５ 级地震的发震构造与灵武北断层有关，而其它３ 次５ 级地震可能与吴忠、灵武地区的沉陷和拉张有关。
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| 关 键 词： | 地震定位 地震构造 银川盆地 |
ACCURATE LOCATION OF EARTHQUAKES IN WUZHONG AND LINGWU REGIONS AND THE SEISMOGENIC TECTONICS OF MODERATE EARTHQUAKES IN THESE REGIONS |
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| Zhao Weiming\ Jin Yanlong\ Liu Xiujing\ Xu Wenjun.ACCURATE LOCATION OF EARTHQUAKES IN WUZHONG AND LINGWU REGIONS AND THE SEISMOGENIC TECTONICS OF MODERATE EARTHQUAKES IN THESE REGIONS[J].Inland Earthquake,1998(4). |
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| Authors: | Zhao Weiming\ Jin Yanlong\ Liu Xiujing\ Xu Wenjun |
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| Institution: | Seismological Bureau of Ningxia Hui Autonomous Region\ Yinchuan\ 750001 |
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| Abstract: | By using the ray tracing method and velocity structure which has been obtained by the joint inversion of velocity structure and hypocentral parameters,the earthquakes which occurred in the Wuzhong and Lingwu regions in 1982~1993 are accurately located. According to the spatial distributional feature of aftershocks,focal mechanism and intensity distribution of 4 moderate earthquakes which occurred in the region,the seismogenic tectonics of the 4 quakes are studied. It is considered that the Lingwu M\-S 5.5 earthquake on Jan.4,1988 has relation to the North Lingwu Fault,and other 3 earthquakes may relate to the subsidence and tension of the Wuzhong and Lingwu regions. |
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| Keywords: | Seismic location\ Seismogenic structure\ Yinchuan Basin |
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