一种新地震定位方法研究
|
摘要
提高地震定位精度一直是地震学应用研究的重要课题之一,目前已经发展了多种方法用于台网定位。这些方法的共同弱点是应对复杂情况的能力差、震后处理时间过长、不能根据地震信息的增加自动修改速度模型而提高下一次地震定位的精度。开发地震台网资源,使之实现地震预警的功能,必须解决地震快速定位问题。为此,本文提出了一种基于地震台网资料的网格化地震定位方法。震前建立每个区间网格到台站的理论走时数据库,震时仅通过优化搜索,以每两个台站的到时差与理论走时差之间的方差最小的网格位置为震源,并得到发震时刻。通过在黑龙江省地震台网的实际应用说明方法可靠,精度较高。
Earthquake locating is one of the most classic and basic problem of seismology,and improveing the locating precision is still an important problem in seismological application study.At present,kinds of the method of location were developed.A new method of earthquake location is introduced in this paper.It is one of straight search methods,and is unlike other travel-time location methods.It abstains from computing the deflection differential coefficient.In the area of Heilongjiang Province and its near,namely east longitude:120-136,north latitude: 42-54,depth of the earth's crust:33 km,the authors process the partition of space grid,set up the theoretical travel-time model,use the arrival-time difference in theory and practice,station and station,simultaneously improve the search method.By practically using,the authors conclude that this method is credible and with high precision.
Earthquake locating is one of the most classic and basic problem of seismology,and improveing the locating precision is still an important problem in seismological application study.At present,kinds of the method of location were developed.A new method of earthquake location is introduced in this paper.It is one of straight search methods,and is unlike other travel-time location methods.It abstains from computing the deflection differential coefficient.In the area of Heilongjiang Province and its near,namely east longitude:120-136,north latitude: 42-54,depth of the earth's crust:33 km,the authors process the partition of space grid,set up the theoretical travel-time model,use the arrival-time difference in theory and practice,station and station,simultaneously improve the search method.By practically using,the authors conclude that this method is credible and with high precision.
引文
[1]徐果明.反演理论及其应用[M].北京:地震出版社,2003.
[2]杨文东,金星,李山有,等.地震定位研究及应用综述[J].地震工程与工程振动,2005,25(1):14-20.
[3]金星,丁海平,李山有,等.绥棱爆破地震监测与局部场地台阵观测[J].地震工程与工程振动,2004,24(4):1-7.
[4]Waldhauser F,Ellsworth W L.A double-difference earthquake location algorithm:method and app lication to the northern hayward fault[J].California,BSSA,2000,90:1353-1368.
[5]Zhang H,Thurber C H.Double-difference tomography:The method and its app lication to the Hayward fault[J].California,BSSA,2003,93(5):1875-18891.
[6]Zhou YM.Rapid three-dimensional hypocentral determination using a master station method[J].J.Geophys.Res,1994,99:5439-15455.
[7]金星,李山有,马强.强震观测数据的实时处理[M]//新世纪地震工程与防震减灾.北京:地震出版社,2002:214-224.
[8]朱元清,赵仲和.提高地震定位精度新方法的研究[J].地震地磁观测与研究,1997,18(5):59-66.
[9]马强,金星,李山有.单自由度系统地震动力反应的实时计算方法[J].地震工程与工程振动,2003,23(5):61-68.
[10]宋锐,等.国家数字地震台网中心实时处理及大地震速报软件系统[J].地震,2001,21(4):48-59.
[11]金星,马强,李山有.利用数字强震仪记录实时仿真地动速度[J].地震工程与工程振动,2004,24(1):49-54.
[12]William Rodi E,Robert Engdahl.A new grid-search multip le-event location algorithm and a comparison of methods[C]//24 th Seismic Re-search Review Nuclear Exp losion Monitoring:Innovation and Integration.Los Alamos National Laboratory LA-UR-02-5048,Ponte VedraBeach,Florida,2002,1:403-411.
[13]唐国兴.用计算机确定地震参数的一个通用方法[J].地震学报,1979,1(2):186-196.
[14]万永革,李鸿吉.遗传算法在确定震源位置中的应用[J].地震地磁观测与研究,1995,16(6):1-7.
[15]金星,李山有,周正华,等.重大工程地震预警系统研究[C]//国家自然科学基金委员会重大工程灾变行为与健康监测学术研讨会论文摘要集.北京:2001,72.
[16]李山有,金星,陈先,等.地震动强度与地震烈度速报研究[J].地震工程与工程振动,2002,22(6):1-7.
[17]李山有,金星,刘启方,等.中国强震动观测展望[J].地震工程与工程振动,2003,23(2):1-7.
[18]Myers S C and Schultz C A.Improving sparse network seismic locations with Bayesian kriging and teleseismically constrained calibration events[J].California,BSSA,2000,90:199-211.
[19]John C Lahr1HYPOELL IPSE:Acomputer program for determining local earthquake hypocenter parameters,Magnitude,and First-Motion Pat-tern[Z].http://pwbus.usgs.gov/of 1999/ofr-99-00231.
[20]周仕勇,许忠淮,韩京,等.主地震定位方法分析以及1997年新疆伽师震群高精度定位[J].地震学报,1999,21(3):258-265.
[21]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),2004,26(2):115-120.
[2]杨文东,金星,李山有,等.地震定位研究及应用综述[J].地震工程与工程振动,2005,25(1):14-20.
[3]金星,丁海平,李山有,等.绥棱爆破地震监测与局部场地台阵观测[J].地震工程与工程振动,2004,24(4):1-7.
[4]Waldhauser F,Ellsworth W L.A double-difference earthquake location algorithm:method and app lication to the northern hayward fault[J].California,BSSA,2000,90:1353-1368.
[5]Zhang H,Thurber C H.Double-difference tomography:The method and its app lication to the Hayward fault[J].California,BSSA,2003,93(5):1875-18891.
[6]Zhou YM.Rapid three-dimensional hypocentral determination using a master station method[J].J.Geophys.Res,1994,99:5439-15455.
[7]金星,李山有,马强.强震观测数据的实时处理[M]//新世纪地震工程与防震减灾.北京:地震出版社,2002:214-224.
[8]朱元清,赵仲和.提高地震定位精度新方法的研究[J].地震地磁观测与研究,1997,18(5):59-66.
[9]马强,金星,李山有.单自由度系统地震动力反应的实时计算方法[J].地震工程与工程振动,2003,23(5):61-68.
[10]宋锐,等.国家数字地震台网中心实时处理及大地震速报软件系统[J].地震,2001,21(4):48-59.
[11]金星,马强,李山有.利用数字强震仪记录实时仿真地动速度[J].地震工程与工程振动,2004,24(1):49-54.
[12]William Rodi E,Robert Engdahl.A new grid-search multip le-event location algorithm and a comparison of methods[C]//24 th Seismic Re-search Review Nuclear Exp losion Monitoring:Innovation and Integration.Los Alamos National Laboratory LA-UR-02-5048,Ponte VedraBeach,Florida,2002,1:403-411.
[13]唐国兴.用计算机确定地震参数的一个通用方法[J].地震学报,1979,1(2):186-196.
[14]万永革,李鸿吉.遗传算法在确定震源位置中的应用[J].地震地磁观测与研究,1995,16(6):1-7.
[15]金星,李山有,周正华,等.重大工程地震预警系统研究[C]//国家自然科学基金委员会重大工程灾变行为与健康监测学术研讨会论文摘要集.北京:2001,72.
[16]李山有,金星,陈先,等.地震动强度与地震烈度速报研究[J].地震工程与工程振动,2002,22(6):1-7.
[17]李山有,金星,刘启方,等.中国强震动观测展望[J].地震工程与工程振动,2003,23(2):1-7.
[18]Myers S C and Schultz C A.Improving sparse network seismic locations with Bayesian kriging and teleseismically constrained calibration events[J].California,BSSA,2000,90:199-211.
[19]John C Lahr1HYPOELL IPSE:Acomputer program for determining local earthquake hypocenter parameters,Magnitude,and First-Motion Pat-tern[Z].http://pwbus.usgs.gov/of 1999/ofr-99-00231.
[20]周仕勇,许忠淮,韩京,等.主地震定位方法分析以及1997年新疆伽师震群高精度定位[J].地震学报,1999,21(3):258-265.
[21]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),2004,26(2):115-120.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心