古浪窗口地震的ECRS方法异常指标识别研究
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摘要
基于多种地震学参数的地震对应相关谱(ECRS)方法,以祁连山地震带5.5级以上地震为目标地震,分析研究了目标地震前古浪窗口小震地震活动性参数的异常特征,提取了古浪窗口小震活动的多种地震学参数的综合异常指标。结果表明,1970年以来祁连山地震带5.5级地震前,利用地震活动性多种参数的综合对应谱可以较好地识别地震活动性参数的异常,其对应率较高。
The earthquake corresponding relevancy spectrum(ECRS method) based on multiple seismology parameter have been applied in certain region,that is Xinjiang,Sichuan,Yunnan,Norhern China and northeast margin of Qinghai-Tibet.Based on the ECRS method,the precursory anomaly identification of Gulang window earthquake before the Ms≥5.5 earthquakes occurred in Qilian seismic belt is studied.The results show that based on the ECRS method,the authors can identify the precursory anomaly by seismic activity parameter of the Gulang window earthquake.From 1970's,the Qilian seismic belt(Ms≥5.5 earthquakes)is related to the Gulang window small earthquake activity.The earthquake example research results show that the anomaly confidence is good,and the rate of corresponding earthquake is higher.
The earthquake corresponding relevancy spectrum(ECRS method) based on multiple seismology parameter have been applied in certain region,that is Xinjiang,Sichuan,Yunnan,Norhern China and northeast margin of Qinghai-Tibet.Based on the ECRS method,the precursory anomaly identification of Gulang window earthquake before the Ms≥5.5 earthquakes occurred in Qilian seismic belt is studied.The results show that based on the ECRS method,the authors can identify the precursory anomaly by seismic activity parameter of the Gulang window earthquake.From 1970's,the Qilian seismic belt(Ms≥5.5 earthquakes)is related to the Gulang window small earthquake activity.The earthquake example research results show that the anomaly confidence is good,and the rate of corresponding earthquake is higher.
引文
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[11]郑文俊,袁道阳,张冬丽,等.1927年古浪8级地震的破裂习性及破裂机制的数值模拟[J].中国地震,2004,20(4):353-363.
[12]刘小凤,梅秀苹,张小美.青藏高原北部地区地震窗口特征及其预报意义[J].西北地震学报,2003,25(4):359-364.
[2]陈章立,李志雄.对地震预报的科学思考(二)—前兆观测研究及加强地震综合预报研究的方向和重点[J].地震,2008,28(2):1-16.
[3]罗灼礼,王伟君.地震前兆的复杂性及地震预报、预警、预防综合决策问题的讨论[J].地震,2008,28(1):19-32.
[4]王海涛,朱令人,杨马陵,等.地震前兆观测数据的信息熵分析[J].地震,1991,11(5):13-18.
[5]郑熙铭,冯德益.前兆值异常的时空演化与地震活动[J].地壳形变与地震,1993,13(2):80-87.
[6]易桂喜,闻学泽,范军,等.由地震活动参数分析安宁河—则木河断裂带的现今活动习性及地震危险性[J].地震学报,2004,26(3):294-303.
[7]易桂喜,范军,闻学泽.由现今地震活动分析鲜水河断裂带中—南段活动习性与强震危险地段[J].地震,2005,25(1):58-66.
[8]Haitao Wang,Qiong Wang and Lanlan Tang.Compre-hensive precursor anomaly research based on earth-quake corresponding relevancy spectrum[J].Earthq.Sci,2009,22:675-681.
[9]王琼,王海涛,唐兰兰.基于地震对应概率谱的多参数综合异常研究[J].中国地震,2009,25(3):294-302.
[10]刘桂萍,傅征祥.海原大地震对古浪大地震的静应力触发研究[J].地球物理学报,2001,44(增刊):107-115.
[11]郑文俊,袁道阳,张冬丽,等.1927年古浪8级地震的破裂习性及破裂机制的数值模拟[J].中国地震,2004,20(4):353-363.
[12]刘小凤,梅秀苹,张小美.青藏高原北部地区地震窗口特征及其预报意义[J].西北地震学报,2003,25(4):359-364.
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