基于三维地球模型和地震层析成像区域地震走时校正方法研究
|
摘要
准确的区域地震走时表对于降低国际监测系统的全球地震监测阈值有着非常重要的作用。论文介绍了一种基于三维地球模型和地震层析成像的区域地震走时校正(RSTT)方法,该方法大大减少了区域地震波走时预测误差,从而可提高地震事件的定位精度。探讨了RSTT的原理、方法以及应用现状,并提出了扩展RSTT模型到新地区的方法。
Accurate regional seismic travel time predictions are important to lower the global seismic detection threshold in global monitoring systems.The method of improving regional seismic travel times based on three-dimensional global model and seismic tomography is discussed and tasks for extending RSTT tomography to new areas are presented in the paper.The method reduces travel time residual and improves location accuracy at regional distance.
Accurate regional seismic travel time predictions are important to lower the global seismic detection threshold in global monitoring systems.The method of improving regional seismic travel times based on three-dimensional global model and seismic tomography is discussed and tasks for extending RSTT tomography to new areas are presented in the paper.The method reduces travel time residual and improves location accuracy at regional distance.
引文
[1]Bondar,I.,S.C.Myers,E.R.Engdahl,et al.Epi-center accuracy based on seismic network criteria[J].Geophys.J.Int,2004,156:483-496.
[2]Crotwell,H.P.,T.J.Owens,J.Ritsema.The TauPToolKit:Flexible seismic ravel-time and ray path u-tilities[J].Seism.Res.Lett.,1999,70:154-160.
[3]Xiaoping Yang,Keith McLaughlin,Robert North.Source-Specific Station Corrections For RegionalPhases At International Monitoring System Stations[C].21st Seismic Research Symposium,1999,333.
[4]Xiaoping Yang,István Bondár,Keith McLaughlin,etal.Source Specific Station Corrections for RegionalPhases at Fennoscandian Stations[J].Pure and Ap-plied Geophysics,2001,158:35-57.
[5]Kennett,B.L.N.,E.R.Engdahl.Traveltimes forglobal Earthquake reference location and phase identi-fication[J].Geophys.J.Int,1991,105:429-465.
[6]Muawia Barazangi.Calibration of Selected IMS Stationsin the Middle East to Improve Seismic Event Location[R].Final Technical Report,2001.
[7]王秀娟.编制区域地震波走时表方法探讨[J].东北地震研究,2005,2l(3):52-55.
[8]周洪波,张关泉.复杂构造区域的初至波走时计算[J].地球物理学报,1994,37(4):515-520.
[9]薛峰,赵永.中国地震速报台网走时残差分析与走时修正[J].地震地磁观测与研究,1998,19(4):48-54.
[10]SAIC,University of Colorado,Harvard University,etc.Source Specific Station Corrections(SSSCs)forInternational Monitoring System(IMS)Seismic Sta-tions in North Africa[R].Middle East And WesternAsia,DTRA01-00-C-0013,2000.
[11]J.R.Murphy,W.Rodi,M.Johnson,etc.Calibra-tion of International Monitoring System(IMS)Stationsin Central and Eastern Asia for Improved Seismic E-vent Location[J].Bulletin of the Seismological Societyof America,2005,95:1535-1560.
[12]Michelle Johnson,Carolynn Vincent.Developmentand Testing of a 3D Velocity Model for Improved EventLocation:A Case Study for the India Pakistan Region[J].Bulletin of the Seismological Society of America,2002,92:2893-2910.
[13]Bassin,C.,G.Laske,G.Masters.The current lim-its of resolution for surface wave tomography in NorthAmerica[C].EOS Trans.,2000,AGU 81:F897.
[14]Bond r,I.,K.L.McLaughlin.A new ground-truth data set for seismic studies[J].SeismologicalResearch Letters,2009,80(3):465-472.
[15]Myers,S.C.,C.A.Schultz.Improving sparse-network location with Bayesian kriging and teleseismi-cally constrained calibration events[J].Bull.Seis-mol.Soc.Am.,2000,90(1):199-211.
[16]Myers,S.C.,M.L.Begnaud,S.Ballard,et al.A crust and upper mantle model of Eurasia and NorthAfrica for Pn travel time calculation[R].Bull.Seis-mol.Soc.Am.,2010,100:640-656.
[17]Myers,S.C.,M.L.Begnaud,S.Ballard,et al.A regional seismic travel time model for North Ameri-ca,in Proceedings of the 2010 Monitoring ResearchReview:Ground-Based Nuclear Explosion Monito-ring Technologies[R].1998,1:LA-UR-10-05578.
[18]Zhao,L.-S.Lateral variations and azimuthal isotro-py of Pn velocities beneath Basin and Range province[J].J.Geophys.Res.,1993,98(B12):22109-22122.
[19]Zhao,L.-S.J.Xie.Lateral variations in compres-sional velocities beneath the Tibetan Plateau from Pntraveltime tomography[J].Geophys.J.Int.,1993,115(3):1070-1084.
[2]Crotwell,H.P.,T.J.Owens,J.Ritsema.The TauPToolKit:Flexible seismic ravel-time and ray path u-tilities[J].Seism.Res.Lett.,1999,70:154-160.
[3]Xiaoping Yang,Keith McLaughlin,Robert North.Source-Specific Station Corrections For RegionalPhases At International Monitoring System Stations[C].21st Seismic Research Symposium,1999,333.
[4]Xiaoping Yang,István Bondár,Keith McLaughlin,etal.Source Specific Station Corrections for RegionalPhases at Fennoscandian Stations[J].Pure and Ap-plied Geophysics,2001,158:35-57.
[5]Kennett,B.L.N.,E.R.Engdahl.Traveltimes forglobal Earthquake reference location and phase identi-fication[J].Geophys.J.Int,1991,105:429-465.
[6]Muawia Barazangi.Calibration of Selected IMS Stationsin the Middle East to Improve Seismic Event Location[R].Final Technical Report,2001.
[7]王秀娟.编制区域地震波走时表方法探讨[J].东北地震研究,2005,2l(3):52-55.
[8]周洪波,张关泉.复杂构造区域的初至波走时计算[J].地球物理学报,1994,37(4):515-520.
[9]薛峰,赵永.中国地震速报台网走时残差分析与走时修正[J].地震地磁观测与研究,1998,19(4):48-54.
[10]SAIC,University of Colorado,Harvard University,etc.Source Specific Station Corrections(SSSCs)forInternational Monitoring System(IMS)Seismic Sta-tions in North Africa[R].Middle East And WesternAsia,DTRA01-00-C-0013,2000.
[11]J.R.Murphy,W.Rodi,M.Johnson,etc.Calibra-tion of International Monitoring System(IMS)Stationsin Central and Eastern Asia for Improved Seismic E-vent Location[J].Bulletin of the Seismological Societyof America,2005,95:1535-1560.
[12]Michelle Johnson,Carolynn Vincent.Developmentand Testing of a 3D Velocity Model for Improved EventLocation:A Case Study for the India Pakistan Region[J].Bulletin of the Seismological Society of America,2002,92:2893-2910.
[13]Bassin,C.,G.Laske,G.Masters.The current lim-its of resolution for surface wave tomography in NorthAmerica[C].EOS Trans.,2000,AGU 81:F897.
[14]Bond r,I.,K.L.McLaughlin.A new ground-truth data set for seismic studies[J].SeismologicalResearch Letters,2009,80(3):465-472.
[15]Myers,S.C.,C.A.Schultz.Improving sparse-network location with Bayesian kriging and teleseismi-cally constrained calibration events[J].Bull.Seis-mol.Soc.Am.,2000,90(1):199-211.
[16]Myers,S.C.,M.L.Begnaud,S.Ballard,et al.A crust and upper mantle model of Eurasia and NorthAfrica for Pn travel time calculation[R].Bull.Seis-mol.Soc.Am.,2010,100:640-656.
[17]Myers,S.C.,M.L.Begnaud,S.Ballard,et al.A regional seismic travel time model for North Ameri-ca,in Proceedings of the 2010 Monitoring ResearchReview:Ground-Based Nuclear Explosion Monito-ring Technologies[R].1998,1:LA-UR-10-05578.
[18]Zhao,L.-S.Lateral variations and azimuthal isotro-py of Pn velocities beneath Basin and Range province[J].J.Geophys.Res.,1993,98(B12):22109-22122.
[19]Zhao,L.-S.J.Xie.Lateral variations in compres-sional velocities beneath the Tibetan Plateau from Pntraveltime tomography[J].Geophys.J.Int.,1993,115(3):1070-1084.
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