汶川地震断裂带数字地震台网建设与应用
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摘要
为了提高对"5.12"大地震灾害监视和预警的能力,了解地震孕育、发生及发展,研究汶川地震发震机理、地震复发周期和余震的迁移规律,"龙门山断裂带地震台网"建设,在震后迅速展开。该台网于2008-06-02开始正式传输地震数据,为灾后重建选址、地震科学钻探选址提供了可靠数据,同时也为研究龙门山断裂带余震分布情况、余震的迁移方向以及判断断层活动状况提供了科学依据。本文从台网选址、台网设计与建设、台网运行与管理、监测效能等方面介绍了台网的建设与应用。
In order to improve the monitoring and early warning capacity of "5.12" large earthquake,to know the inoculation,the occurrence and the development of the earthquakes,to research the generating mechanism of strong earthquakes,the earthquake recurrence interval and the regulation of aftershocks migration,the construction of seismic network in Longmenshan Fault Zone developed rapidly after the large earthquake.The data transmission began on Jun,2,2008 from this network,it provided the reliability data for reconstruction and the earthquake scientific drilling site selection after the disaster,at the same time it also provided the scientific basis for researching the aftershocks distribution,the migration direction and judging the fault activities in Longmenshan Seismic Belt.From the aspects of network site selecting,network designing and constructing,network operating and managing,monitoring efficiency etc.,this paper introduces the construction and application of the network.
In order to improve the monitoring and early warning capacity of "5.12" large earthquake,to know the inoculation,the occurrence and the development of the earthquakes,to research the generating mechanism of strong earthquakes,the earthquake recurrence interval and the regulation of aftershocks migration,the construction of seismic network in Longmenshan Fault Zone developed rapidly after the large earthquake.The data transmission began on Jun,2,2008 from this network,it provided the reliability data for reconstruction and the earthquake scientific drilling site selection after the disaster,at the same time it also provided the scientific basis for researching the aftershocks distribution,the migration direction and judging the fault activities in Longmenshan Seismic Belt.From the aspects of network site selecting,network designing and constructing,network operating and managing,monitoring efficiency etc.,this paper introduces the construction and application of the network.
引文
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[8]邵玉平,王翠芳,宋澄.地震台网勘选数据的自动化处理[J].四川地震,2008,(1):9-12.SHAO Yu-ping,WANG Cui-fang,SONG Cheng.The automation of site survey data processing for seismic network[J].Earth-quake Research in Sichuan,2008,(1):9-12.
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[11]张宏志,刁桂苓,陈祺福.1976年唐山7.8级地震震区现今地震震源机制分析[J].地震研究,2008,31(1):1-6.ZHANG Hong-zhi,DIAO Gui-ling,CHEN Qi-fu.Focal mechanism analysis of the recent earthquakes in Tangshan seismic re-gion of M7.6 in 1976[J].Journal of Seismological Research,2008,31(1):1-6.
[2]徐纪人,赵志新,许志琴,等.大陆科学钻探与深井地球物理长期观测研究最新进展[J].地质通报,2004,23(8):721-727.XU Ji-ren,ZHAO Zhi-xin,XU Zhi-qin,et al.New progress in continental scientific drilling and long-term geophysical observa-tions in deep boreholes[J].Geological Bulletin of China,2004,23(8):721-727.
[3]许志琴,李海兵,吴忠良.汶川地震和科学钻探[J].地质学报,2008,82(12):1 613-1 622.XU Zhi-qin,LI Hai-bing,WU Zhong-liang.Wenchuan earthquake and scientific drilling[J].Acta Geologica Sinica,2008,82(12):1 613-1 622.
[4]杨国华,李延兴,韩月萍,等.由GPS观测结果推导中国大陆现今水平应变场[J].地震学报,2002,24(4):337-347.YANG Guo-hua,LI Yan-xing,HAN Yue-ping,et al.Current horizontal strain field in Chinese mainland derived from GPSda-ta[J].Acta Seismologica Sinica,2002,24(4):337-347.
[5]王连捷,崔军文,周春景,等.汶川5.12地震发震机理的数值模拟[J].地质力学学报,2009,15(2):105-113.WANG Lian-jie,CUI Jun-wen,ZHOU Chun-jing,et al.Numerical modeling for Wenchuan earthquake mechanism[J].Jour-nal of Geomechanics,2009,15(2):105-113.
[6]彭华,马秀敏,姜景捷.山丹地应力监测站体应变仪的地震效应[J].地质力学学报,2008,14(2):97-108.PENG Hua,MA Xiu-min,JIANG Jing-jie.Analysis of the volume strain data from the Shandan in-situ stress monitoring sta-tion[J].Journal of Geomechanics,2008,14(2):97-108.
[7]彭华,马秀敏,姜景捷.龙门山北端青川断层附近应力测量与断层稳定性[J].地质力学学报,2009,15(2):114-130.PENG Hua,MA Xiu-min,JIANG Jing-jie.Stability and stress measurement near the Qingchuan fault in the northern Longmenmountains[J].Journal of Geomechanics,2009,15(2):114-130.
[8]邵玉平,王翠芳,宋澄.地震台网勘选数据的自动化处理[J].四川地震,2008,(1):9-12.SHAO Yu-ping,WANG Cui-fang,SONG Cheng.The automation of site survey data processing for seismic network[J].Earth-quake Research in Sichuan,2008,(1):9-12.
[9]John Langbein.Computer algorithm for analyzing and processing borehole strainmeter data[J].Computers&Geosciences,2010,6(5):611-619.
[10]万永革,周公威,郭燕平.中国数字地震台网记录的昆仑山口西地震的球型自由振荡[J].地震,2005,25(1):31-40.WAN Yong-ge,ZHOU Gong-wei,GUO Yan-ping.Spherical mode of the earth free oscillation excitated by the earthquake inthe west to the Kunlun mountain pass recorded by China digital seismograph network[J].Earthquake,2005,25(1):31-40.
[11]张宏志,刁桂苓,陈祺福.1976年唐山7.8级地震震区现今地震震源机制分析[J].地震研究,2008,31(1):1-6.ZHANG Hong-zhi,DIAO Gui-ling,CHEN Qi-fu.Focal mechanism analysis of the recent earthquakes in Tangshan seismic re-gion of M7.6 in 1976[J].Journal of Seismological Research,2008,31(1):1-6.
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