地震预警定位方法研究
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摘要
实时地震定位是地震预警系统中必须解决的关键问题之一。文中在借鉴已有实时地震定位方法的基础上并结合我国台网的实际情况,推导得到一套利用前三/四台P波、S波到时信息进行实时定位的算法。作者选取2000年至2008年间福建省地震监测台网记录到的68个3.0级以上地震对该算法进行验证。研究结果表明,采用文中方法的定位结果具有一定的精度,满足预警定位的要求。此外,文中还讨论了采用该公式定位时可能会引起的误差以及现有福建省地震监测台网和"十一五"完成后的福建省地震监测台网分别用于地震预警时可能的误差分布情况。
Real-time earthquake location is one of the key issues that must be solved in earthquake early warning(EEW) system.In this paper,based on the real-time earthquake location method that is used in EEW systems and the real situation of seismic monitoring network in our country,we deduce a formula that just use the first 3 or 4 stations' P/S wave travel time information.We select 68 earthquakes,occurred during 2000-2008,the magnitudes of which are greater than 3.0,to test this method.Results show that our method has certain precision and meet the EEW system's requirements.Also,we discuss the errors that might be aroused when using this formula,and error distribution when we use the existing seismic monitoring network in Fujian Province and that after the completion of the eleventh Five Year Construction Plan for EEW purpose,respecfively.
Real-time earthquake location is one of the key issues that must be solved in earthquake early warning(EEW) system.In this paper,based on the real-time earthquake location method that is used in EEW systems and the real situation of seismic monitoring network in our country,we deduce a formula that just use the first 3 or 4 stations' P/S wave travel time information.We select 68 earthquakes,occurred during 2000-2008,the magnitudes of which are greater than 3.0,to test this method.Results show that our method has certain precision and meet the EEW system's requirements.Also,we discuss the errors that might be aroused when using this formula,and error distribution when we use the existing seismic monitoring network in Fujian Province and that after the completion of the eleventh Five Year Construction Plan for EEW purpose,respecfively.
引文
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[13]Shigeki Horiuchi,Hiroaki Negishi,kana Abe,et al.An automatic processing systemfor broadcasting earthquake alarms[J].BSSA,2005,95(2):708-718.
[14]Claudio Satriano,Anthong Lomax,Aldo Zollo,et al.Real-time evolutionary earthquake location for seismic early warning[J].BSSA,2008,98(3):doi:10.1785/0120060159,1482-1494.
[15]李山有,马强,金星,等.地震预警系统与智能应急控制系统研究[J].世界地震工程,2004,20(4):21-26.
[16]朱福祥,郭迅.重大工程地震预警初步研究[J].世界地震工程,2002,18(3):32-36.
[17]廖旭,黄河.企业地震预警系统应用研究[J].地震工程与工程振动,2002,22(6):142-149.
[18]马强.地震预警技术研究与应用[D].哈尔滨:中国地震局工程力学研究所,2008.
[2]Gilead Wurman,Richard M,Allen,et al.Toward earthquake early warning in northern California[J].Journal of Geophysical Research,2007,112:1-19.
[3]Iglesias A,Singh S K,Ordaz M,et al.The seismic Alert systemfor Mexico City:An evaluation of Its performance and a strategy for Its Improvement[J].BSSA.2007,97(5):1718-1729.
[4]Erdik M,Fahjan Y,Mert A,et al.Istanbul earthquake rapid response and the early warning system[J].Bulletin of Earthquake Engineering.2003,1(1):157-163.
[5]Zollo A,Iannaccone G,Lancieri,et al.Earthquake early warning system in southern Italy:methodologies and per-formance evaluation[J].Geo-physical Research Letters,2009,36:1-6.
[6]Wu Yih-Min,Teng Ta-Liang.A virtual subnetwork approach to earthquake early warning[J].BSSA,2002,92(5):2008-2018.
[7]Anderson K R.Epicentral location using arrival time order[J].BSSA,1981,70(2):541-545.
[8]Andreas Rosenberger.Arrival-time order location revisited[J].BSSA,2009,99,(3):2027-2034.
[9]Hiroo Kanamori.Locating earthquakes with amplitude:application to real-time seismology[J].BSSA,1993,83(1):264-268.
[10]Zhou Hua-wei.Rapid three-dimensional hypocentral determination using a master station method[J].Journal of Geophysical Research,1994,99(B8):15439-15455.
[11]Toshikazu Odaka,Kimitoshi Ashiya,Shin′ya Tsukda,et al.A new method of quickly estimating epicentral distance and magnitude from a singleseismic record[J].BSSA,2003,93(1):526-532.
[12]Paul Rydelek,Jose Pujol.Real-time seismic warning with a two-station subarray[J].BSSA,2004,94(4):1546-1550.
[13]Shigeki Horiuchi,Hiroaki Negishi,kana Abe,et al.An automatic processing systemfor broadcasting earthquake alarms[J].BSSA,2005,95(2):708-718.
[14]Claudio Satriano,Anthong Lomax,Aldo Zollo,et al.Real-time evolutionary earthquake location for seismic early warning[J].BSSA,2008,98(3):doi:10.1785/0120060159,1482-1494.
[15]李山有,马强,金星,等.地震预警系统与智能应急控制系统研究[J].世界地震工程,2004,20(4):21-26.
[16]朱福祥,郭迅.重大工程地震预警初步研究[J].世界地震工程,2002,18(3):32-36.
[17]廖旭,黄河.企业地震预警系统应用研究[J].地震工程与工程振动,2002,22(6):142-149.
[18]马强.地震预警技术研究与应用[D].哈尔滨:中国地震局工程力学研究所,2008.
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