昆明活断层探测工作区中小地震重定位研究
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摘要
运用双差精确定位法对1999~2003年间发生在昆明活断层探测工程工作区的中小地震进行重新定位,并分析精确定位结果与地质构造的关系。结果显示,汤郎—易门断裂、小江断裂的西支和玉川断裂的地震活动性相对于其它断裂而言较强,并且地震易发生在断裂交汇处或断裂交汇处的断层活动性较强。
We use double difference location method to relocate the mid-small earthquakes occurred in 1999-2003 in the survey area of active faults in Kunming,and analyze the relationship between relocation result and geologic structure.We find that the seismicities of the Tanglang-Yimen fault,the west branch of the Xiaojiang fault,and the Yuchuan fault are stronger than those of other faults,and the earthquake occurs in the intersection area easily,which means the fault in the intersection area is active comparatively.
引文
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