2009年乌什-阿图什地震危险区异常跟踪
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摘要
分析了乌什-阿图什地震危险区所处的柯坪块体地震时空活动特点:6级以上地震均沿块体边缘分布;6级地震时序分布不均匀,空间分布表现出轮回特征;6级地震前4级地震平静较为普遍,相关构造带以增强-平静为主要特征;响应地震的地点指示意义较为明确。文中还对危险区异常判定及2009年块体3次5级地震异常跟踪进行了总结。
This paper analyzed the spatial and temporal feature of earthquakes in Keping block located in the Wushi-Atushi seismic dangerous region.The result showed that the earthquakes with MS≥ 6 were distributed on the edge of the Keping block and had the spatial transmigration and uneven timing distribution feature.The MS4 earthquakes appeared quiet before the MS6 earthquakes,the seismicity in the related tectonic zone was characteristiced of activityquiescence.The response earthquakes indicated the possible location of future moderate earthquakes.The article summarized the seismic dangerous region judgment and seismic anomaly tracing of 3 MS5 earthquakes in the Keping block in 2009.
This paper analyzed the spatial and temporal feature of earthquakes in Keping block located in the Wushi-Atushi seismic dangerous region.The result showed that the earthquakes with MS≥ 6 were distributed on the edge of the Keping block and had the spatial transmigration and uneven timing distribution feature.The MS4 earthquakes appeared quiet before the MS6 earthquakes,the seismicity in the related tectonic zone was characteristiced of activityquiescence.The response earthquakes indicated the possible location of future moderate earthquakes.The article summarized the seismic dangerous region judgment and seismic anomaly tracing of 3 MS5 earthquakes in the Keping block in 2009.
引文
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[2]胥颐.新疆天山及邻区地壳上地幔三维速度图像[J].地震学报,1994,(4):480-487.
[3]柏美样.新疆活断层和强震[A].新疆维吾尔自治区地震局,新疆地震研究文集[C].新疆:新疆人民出版社,2000.
[4]王筱荣,李志海.新疆中强震预报的探讨[J].西北地震学报,2008,3O(2):132-138.
[5]张国民,李献智,耿鲁明.印度板块北边界地震活动和中国大陆地震[J].地震,1994,14(3):1-6.
[6]李延兴,胡兴康,帅乎.中国大陆地壳水平运动统一速度场的建立与分析[J].地震学报,2001,23(5):454-459.
[7]王筱荣.阿图什6.9级地震前部分测震学参数异常特征及其预报情况[J].西北地震学报,1997,19(1):32-37.
[8]王筱荣.新疆2次中强震的预报尝试[J].内陆地震,1997,11(1):70-73.
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