双差地震定位法在山西中小地震精确定位中的初步应用
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摘要
采用双差地震定位法对山西省内2001—2005年间发生的ML≥2.0的地震进行了重新定位。重新定位后得到410个地震事件的精确震源参数。结果表明,重新定位后的震中分布呈明显的条带状,且更加集中。定位后的平均震源深度为9.35 km,其中又以地面下2 km~14 km为发震优势层。
ML≥2.0 earthquakes occurred from 2001 to 2005 in Shanxi Province are relocated by using double difference earthquake locating method.More accurate focal parameters of 410 earthquakes are obtained by relocating,showing more concentrated and obvious banding distribution of epicenters.The average focal depth is 9.35 km,and 2～14 km underground is the dominate layer where earthquakes can occur more easily.
ML≥2.0 earthquakes occurred from 2001 to 2005 in Shanxi Province are relocated by using double difference earthquake locating method.More accurate focal parameters of 410 earthquakes are obtained by relocating,showing more concentrated and obvious banding distribution of epicenters.The average focal depth is 9.35 km,and 2～14 km underground is the dominate layer where earthquakes can occur more easily.
引文
[1]Waldhauser F,Ellsworth W.A double difference ear-thquake location algorithm:method and application tothe northern Hayward fault[J],Californi-a.Bull.Seism.Soc.Am,2000,90(6):1 353-1 368.
[2]Fukao Y.Source process for a large earthquake and itstectonic implicatins-the western Brazil earthquake of1963[J].Phys Earth Planet Interi,1972(5):61-76.
[3]Fitch T J.Compressional velocity in source regions ofdeep earthquakes:an application of the master eventtechnique[J].Earth Planet Sci Lett,1975(26):156-166.
[4]Chung W Y,Kanamori H.Source process and tectonicimplications of the Spanish deep-focus earthquake ofMarch 29,1954[J].Phys EarthPlanet Interi,1976(13):85-96.
[5]杨智娴,陈运泰,张宏志.张北—尚义地震序列的重新定位[J].地震地磁观测与研究,1999,20(6):6-9.
[6]杨智娴,陈运泰,张宏志.张北—尚义地震序列的重新定位和发震构造[J].地震学报,2002,24(4):366-377.
[7]Geiger L.Herdbestimung bei Erdbeben aus den Ankunft-szeiten[J].K.Ges Wiss Gott,1910(4):331-349.
[8]Aki K,Richards P G.Quantitative Seismology,Theoryand Methods,1&2[M].New York:W HFreeman,1980:932.
[9]Lav T.Wallace T C.Modern Global Seismoloav[M].SanDieeo:Academic Precc,1995:521.
[10]杨智娴,陈运泰,郑月军,等.双差地震定位法在我国中西部地区地震精确定位中的应用[J].中国科学(D辑),2003,33(增刊):129-134.
[11]吕坚,倪四道,沈小七,等.九江—瑞昌地震的精确定位及其发震构造初探[J].中国地震,2007,23(2):166-174.
[12]李织海,赵翠萍,王海淘,等.双差地震定位法在北天山地区地震精确定位中的初步应用[J].内陆地震,2004,18(2):146-153.
[13]赵金仁,张先康,张成科,等.山西五台山地区地壳深部结构特征研究[J].地球物理学报,2006,49(1):123-129.
[14]祝治平,张建狮,张成科,等.山西中南部壳幔结构的研究[J].地球物理学报,1999,21(1):42-49.
[2]Fukao Y.Source process for a large earthquake and itstectonic implicatins-the western Brazil earthquake of1963[J].Phys Earth Planet Interi,1972(5):61-76.
[3]Fitch T J.Compressional velocity in source regions ofdeep earthquakes:an application of the master eventtechnique[J].Earth Planet Sci Lett,1975(26):156-166.
[4]Chung W Y,Kanamori H.Source process and tectonicimplications of the Spanish deep-focus earthquake ofMarch 29,1954[J].Phys EarthPlanet Interi,1976(13):85-96.
[5]杨智娴,陈运泰,张宏志.张北—尚义地震序列的重新定位[J].地震地磁观测与研究,1999,20(6):6-9.
[6]杨智娴,陈运泰,张宏志.张北—尚义地震序列的重新定位和发震构造[J].地震学报,2002,24(4):366-377.
[7]Geiger L.Herdbestimung bei Erdbeben aus den Ankunft-szeiten[J].K.Ges Wiss Gott,1910(4):331-349.
[8]Aki K,Richards P G.Quantitative Seismology,Theoryand Methods,1&2[M].New York:W HFreeman,1980:932.
[9]Lav T.Wallace T C.Modern Global Seismoloav[M].SanDieeo:Academic Precc,1995:521.
[10]杨智娴,陈运泰,郑月军,等.双差地震定位法在我国中西部地区地震精确定位中的应用[J].中国科学(D辑),2003,33(增刊):129-134.
[11]吕坚,倪四道,沈小七,等.九江—瑞昌地震的精确定位及其发震构造初探[J].中国地震,2007,23(2):166-174.
[12]李织海,赵翠萍,王海淘,等.双差地震定位法在北天山地区地震精确定位中的初步应用[J].内陆地震,2004,18(2):146-153.
[13]赵金仁,张先康,张成科,等.山西五台山地区地壳深部结构特征研究[J].地球物理学报,2006,49(1):123-129.
[14]祝治平,张建狮,张成科,等.山西中南部壳幔结构的研究[J].地球物理学报,1999,21(1):42-49.
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