利用高频GPS进行地表同震位移监测及震相识别
|
摘要
结合日本3.11大地震,利用近震区和远震区若干测站的高频GPS观测数据,采用动态精密单点定位技术分析了强震时复杂的地表运动时序,获得了地表同震位移.在此基础上提出利用S变换对高频GPS地震波进行震相识别,有效拾取了P波初至,反演了P波传播速度并与地震仪数据、USGS提供的参考值进行了对比和分析,为后续地震应急、地震预警提供了重要的、科学的决策依据.
High-rate kinematic analysis coupled with global positioning system(GPS) has become one of the effective methods to observe the dynamic crustal deformations caused by earthquake.In this article,kinematic precise point positioning(PPP) technology was used for monitoring the complex surface vibration behavior and coseismic displacements with high-frequency GPS data from stations in near-field and teleseismic areas during the 11 March 2011 moment magnitude 9.0 Tohoku Earthquake.Furthermore,we proposed the S-transform algorithm for the primary wave(P-wave) arrival picking from high-rate GPS(HR-GPS) seismic waves.And its performances were compared with nearby seismograph records and the theoretical value provided by U.S.Geological Survey(USGS).
High-rate kinematic analysis coupled with global positioning system(GPS) has become one of the effective methods to observe the dynamic crustal deformations caused by earthquake.In this article,kinematic precise point positioning(PPP) technology was used for monitoring the complex surface vibration behavior and coseismic displacements with high-frequency GPS data from stations in near-field and teleseismic areas during the 11 March 2011 moment magnitude 9.0 Tohoku Earthquake.Furthermore,we proposed the S-transform algorithm for the primary wave(P-wave) arrival picking from high-rate GPS(HR-GPS) seismic waves.And its performances were compared with nearby seismograph records and the theoretical value provided by U.S.Geological Survey(USGS).
引文
[1]Boore D M,Stephens C D,Joyner W B.Comments onbaseline correction of digital strong-motion data:examplesfrom the 1999 Hector Mine,California,earthquake.Bull.Seismol.Soc.Am.,2002,92(4):1543-1560,doi:10.17850120000926.
[2]Blewitt G,Kreemer C,Hammond W C,et al.Rapiddetermination of earthquake magnitude using GPS for tsunamiwarning systems.Geophys.Res.Lett.,2006,33:L11309,doi:10.1029/2006GL026145.
[3]Hirahara K,Nakano T,Hoso Y,et al.An experiment forGPS strain seismometer.∥Proc.Japanese Symposium onGPS.Tokyo,Japan,1994:67-75.
[4]Ge L.GPS seismometer and its signal extraction.∥Proc.12th Int.Tech.Meeting of the Satellite Division of the U.S.Inst.of Navigation(ION GPS'99).Nashville,Tennessee,1999.
[5]Ge L L,Han S W,Rizos C,et al.GPS seismometers withup to 20Hz sampling rate.Earth.Planets and Space,2000,52(10):881-884.
[6]Larson K M,Bodin P,Gomberg J.Using 1-Hz GPS data tomeasure deformations caused by the Denali fault earthquake.Science,2003,300(5624):1421-1424.
[7]Bock Y,Prawirodirdjo L,Melbourne T I.Detection ofarbitrarily large dynamic ground motions with a dense high-rate GPS network.Geophys.Res.Lett.,2004,31:L06604.doi:10.1029/2003GL019150.
[8]Irwan M,Kimata F,Hirahara K,et al.Measuring grounddeformations with 1-Hz GPS data:the 2003 Tokachi-okiearthquake(preliminary report).Earth,Planets and Space,2004,56(3):389-393.
[9]Miyazaki S,Larson K M,Choi K,et al.Modeling therupture process of the 2003 September 25 Tokachi-Oki(Hokkaido)earthquake using 1-Hz GPS data.Geophys.Res.Lett.,2004,31:L21603,doi:10.1029/2004GL021457.
[10]Ji C,Larson K M,Tan Y,et al.Slip history of the 2003SanSimeon earthquake constrained by combining 1-Hz GPS,strong motion,and teleseismic data.Geophys.Res.Lett.,2004,31:L17608,doi:10.1029/2004GL020448.
[11]Ohta Y,Meilano I,Sagiya T,et al.Large surface wave ofthe 2004Sumatra-Andaman earthquake captured by the verylong baseline kinematic analysis of 1-Hz GPS data.Earth,Planets and Space,2006,58(2):153-157.
[12]Shi C,Lou Y,Zhang H,et al.Seismic deformation of theMw8.0 Wenchuan earthquake from high-rate GPS observations.Adv.Space Res.,2010,46(2):228-235,doi:10.1016/j.asr.2010.03.006.
[13]殷海涛,甘卫军,肖根如等.利用高频GPS技术进行强震地面运动监测的研究进展.地球物理学进展,2009,24(6):2012-2019.Yin H T,Gan W J,Xiao G R,et al.Progress on monitoringstrong earthquake ground motions using high-rate GPS.Progress in Geophysics(in Chinese),2009,24(6):2012-2019.
[14]张小红,刘经南,Forsberg R.基于精密单点定位技术的航空测量应用实践.武汉大学学报(信息科学版),2006,31(1):19-22,46.Zhang X H,Liu J N,Forsberg R.Application of precisepoint positioning in airborne survey.Geomatics and InformationScience of Wuhan University(in Chinese),2006,31(1):19-22,46.
[15]Stockwell R G,Mansinha L,Lowe R P.Localization of thecomplex spectrum:The S transform.IEEE Transactions onSignal Processing,1996,44(4):998-1001.
[16]Kennett B L N,Engdahl E R.Travel times for globalearthquake location and phase identification.Geophys.J.Int.,1991,105(2):429-465.
[2]Blewitt G,Kreemer C,Hammond W C,et al.Rapiddetermination of earthquake magnitude using GPS for tsunamiwarning systems.Geophys.Res.Lett.,2006,33:L11309,doi:10.1029/2006GL026145.
[3]Hirahara K,Nakano T,Hoso Y,et al.An experiment forGPS strain seismometer.∥Proc.Japanese Symposium onGPS.Tokyo,Japan,1994:67-75.
[4]Ge L.GPS seismometer and its signal extraction.∥Proc.12th Int.Tech.Meeting of the Satellite Division of the U.S.Inst.of Navigation(ION GPS'99).Nashville,Tennessee,1999.
[5]Ge L L,Han S W,Rizos C,et al.GPS seismometers withup to 20Hz sampling rate.Earth.Planets and Space,2000,52(10):881-884.
[6]Larson K M,Bodin P,Gomberg J.Using 1-Hz GPS data tomeasure deformations caused by the Denali fault earthquake.Science,2003,300(5624):1421-1424.
[7]Bock Y,Prawirodirdjo L,Melbourne T I.Detection ofarbitrarily large dynamic ground motions with a dense high-rate GPS network.Geophys.Res.Lett.,2004,31:L06604.doi:10.1029/2003GL019150.
[8]Irwan M,Kimata F,Hirahara K,et al.Measuring grounddeformations with 1-Hz GPS data:the 2003 Tokachi-okiearthquake(preliminary report).Earth,Planets and Space,2004,56(3):389-393.
[9]Miyazaki S,Larson K M,Choi K,et al.Modeling therupture process of the 2003 September 25 Tokachi-Oki(Hokkaido)earthquake using 1-Hz GPS data.Geophys.Res.Lett.,2004,31:L21603,doi:10.1029/2004GL021457.
[10]Ji C,Larson K M,Tan Y,et al.Slip history of the 2003SanSimeon earthquake constrained by combining 1-Hz GPS,strong motion,and teleseismic data.Geophys.Res.Lett.,2004,31:L17608,doi:10.1029/2004GL020448.
[11]Ohta Y,Meilano I,Sagiya T,et al.Large surface wave ofthe 2004Sumatra-Andaman earthquake captured by the verylong baseline kinematic analysis of 1-Hz GPS data.Earth,Planets and Space,2006,58(2):153-157.
[12]Shi C,Lou Y,Zhang H,et al.Seismic deformation of theMw8.0 Wenchuan earthquake from high-rate GPS observations.Adv.Space Res.,2010,46(2):228-235,doi:10.1016/j.asr.2010.03.006.
[13]殷海涛,甘卫军,肖根如等.利用高频GPS技术进行强震地面运动监测的研究进展.地球物理学进展,2009,24(6):2012-2019.Yin H T,Gan W J,Xiao G R,et al.Progress on monitoringstrong earthquake ground motions using high-rate GPS.Progress in Geophysics(in Chinese),2009,24(6):2012-2019.
[14]张小红,刘经南,Forsberg R.基于精密单点定位技术的航空测量应用实践.武汉大学学报(信息科学版),2006,31(1):19-22,46.Zhang X H,Liu J N,Forsberg R.Application of precisepoint positioning in airborne survey.Geomatics and InformationScience of Wuhan University(in Chinese),2006,31(1):19-22,46.
[15]Stockwell R G,Mansinha L,Lowe R P.Localization of thecomplex spectrum:The S transform.IEEE Transactions onSignal Processing,1996,44(4):998-1001.
[16]Kennett B L N,Engdahl E R.Travel times for globalearthquake location and phase identification.Geophys.J.Int.,1991,105(2):429-465.
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