GRACE卫星观测到的日本9.0级大地震重力前兆信息
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摘要
利用102个GRACE卫星月重力场模型,提取了2011年3月11日日本9.0级大地震的重力前兆信息,同时利用USGS发布的断层模型结合向上延拓技术计算了理论同震重力变化,并对结果进行了比较和分析。
Using 102 GRACE monthly solutions,the gravity precursor caused by Ms9.0 strong earthquake occurred on 11 March,2011 near the east coast of Honshu,Japan,had calculated and co-seismic gravity changes by using fault models from USGS with upword technology,then analyzed and compared both the results with each other.
Using 102 GRACE monthly solutions,the gravity precursor caused by Ms9.0 strong earthquake occurred on 11 March,2011 near the east coast of Honshu,Japan,had calculated and co-seismic gravity changes by using fault models from USGS with upword technology,then analyzed and compared both the results with each other.
引文
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6 Einarsson I,et al.Gravity changes due to the Sumatra-Anda-man and Nias earthquakes as detected by the GRACE satel-lites:a reexamination[J].Geophys J Int.,2010,183:733?747,doi:10.1111/j.1365-246X.2010.04756.x.
7邢乐林,等.Sumatra-Adaman大地震同震和震后形变的GRACE卫星检测[J].武汉大学学报(信息科学版),2009,34(9):1 080-1 084.(Xing Lelin,et al.Detection ofco-seismic and post-seismic deformation caused by the Su-matra-Andaman earthquake using GRACE[J].Geomaticsand Information Science of Wuhan University,2009,34(9):1 080-1 084)
8 Han S C,Sauber J and Luthcke S.Regional gravity decreaseafter the 2010 Maule(Chile)earthquake indicates large-scale mass redistribution[J].Geophys Res Lett.,2010,37,L23307,doi:10.1029/2010GL045449.
9 de Viron O,et al.Retrieving earthquake signature in gracegravity solutions[J].Geophys J Int.,2008,174:14-20,doi:10.1111/j.1365-246X.2008.03807.x.
10 Mikhailov V,et al.Can tectonic processes be recoveredfrom new gravity satellite data?[J].Earth and PlanetaryScience Letters,2004,228:281-297.
11 http://earthquake.usgs.gov/earthquakes/eqinthenews/2011/usc0001xgp/
12 Sun W and Okubo S.Surface potential and gravity changesdue to internal dislocations in a spherical Earth-Ⅰ.Theoryfor a point dislocation[J].Geophys J Int.,1993,114:569-592.
13孙文科.地震火山活动产生重力变化的理论与观测研究的进展及现状[J].大地测量与地球动力学,2008,28(4):44-53.(Sun Wenke.Progress and current situationof research on theory and observation of gravity changecaused by seismicity and volcanism[J].Journal of Geodesyand Geodynamics,2008,(4):44-53)
14邢乐林,等.GRACE卫星重力观测在强震监测中的应用及分析[J].大地测量与地球动力学,2010,(4):51-55.(Xing Lelin,et al.Application and analysis of GRACEsatellite gravity observation in monitoring strong earthquake[J].Journal of Geodesy and Geodynamics,2010,(4):51-54)
15 Steffen H,et al.Present rate of uplift in Fennosscandiafrom GRACE and absolute gravimetry[J].Tetonophysisc,2009,474:69-77.
2 Han S C,et al.Crustal dilatation observed by GRACE afterthe 2004 Sumatra-Andaman earthquake[J].Science,2006,313(5787):658-662.
3 Chen J L,et al.GRACE detects coseismic and postseismicdeformation from the Sumatra-Andaman earthquake[J].Geophys.Res Lett.,2007,34,L13302,doi:10.1029/2007GL030356.
4 Ogawa R and Heki K.Slowpostseismic recovery of geoid de-pression formed by the 2004 Sumatra-Andaman earthquakeby mantle water diffusion[J].Geophy Res Lett.,2007,34,l06313,doi:10.1029/2007GL029340.
5 de Linage C,et al.Separation of coseismic and postseismicgravity changes for the 2004 Sumatra-Andaman earthquakefrom 4.6 yr of GRACE observations and modelling of the co-seismic change by normalmodes summation[J].Geophys JInt.,2009,176:695-714,doi:10.1111/j.1365-246X.2008.04025.x.
6 Einarsson I,et al.Gravity changes due to the Sumatra-Anda-man and Nias earthquakes as detected by the GRACE satel-lites:a reexamination[J].Geophys J Int.,2010,183:733?747,doi:10.1111/j.1365-246X.2010.04756.x.
7邢乐林,等.Sumatra-Adaman大地震同震和震后形变的GRACE卫星检测[J].武汉大学学报(信息科学版),2009,34(9):1 080-1 084.(Xing Lelin,et al.Detection ofco-seismic and post-seismic deformation caused by the Su-matra-Andaman earthquake using GRACE[J].Geomaticsand Information Science of Wuhan University,2009,34(9):1 080-1 084)
8 Han S C,Sauber J and Luthcke S.Regional gravity decreaseafter the 2010 Maule(Chile)earthquake indicates large-scale mass redistribution[J].Geophys Res Lett.,2010,37,L23307,doi:10.1029/2010GL045449.
9 de Viron O,et al.Retrieving earthquake signature in gracegravity solutions[J].Geophys J Int.,2008,174:14-20,doi:10.1111/j.1365-246X.2008.03807.x.
10 Mikhailov V,et al.Can tectonic processes be recoveredfrom new gravity satellite data?[J].Earth and PlanetaryScience Letters,2004,228:281-297.
11 http://earthquake.usgs.gov/earthquakes/eqinthenews/2011/usc0001xgp/
12 Sun W and Okubo S.Surface potential and gravity changesdue to internal dislocations in a spherical Earth-Ⅰ.Theoryfor a point dislocation[J].Geophys J Int.,1993,114:569-592.
13孙文科.地震火山活动产生重力变化的理论与观测研究的进展及现状[J].大地测量与地球动力学,2008,28(4):44-53.(Sun Wenke.Progress and current situationof research on theory and observation of gravity changecaused by seismicity and volcanism[J].Journal of Geodesyand Geodynamics,2008,(4):44-53)
14邢乐林,等.GRACE卫星重力观测在强震监测中的应用及分析[J].大地测量与地球动力学,2010,(4):51-55.(Xing Lelin,et al.Application and analysis of GRACEsatellite gravity observation in monitoring strong earthquake[J].Journal of Geodesy and Geodynamics,2010,(4):51-54)
15 Steffen H,et al.Present rate of uplift in Fennosscandiafrom GRACE and absolute gravimetry[J].Tetonophysisc,2009,474:69-77.
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