2014年于田M_s7.3级地震近场地表运动和同震位移的初步分析结果
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摘要
基于2014年于田M_s7.3级地震周边地区的GPS连续观测站数据,得到了此次地震的近场地表运动和同震位移,分析了此次地震的地壳形变特征。结果表明,此次地震引起的地表运动显著,GPS记录到的最大位移振幅远超过最终的同震位移,其中距离展中约印如m的XJYT站记录到了西向74.7mm和北向39.9mm的最大位移振幅,同震位移为西向20.0mm和北向9.8mm。2008年于田M_s7.3级地震在一定程度上触发了此次地震。
The ground motion and coseismic deformation of 2014 Yutian M_s7.3 earthquake are acquired by processing the data from continuous GPS stations around the earthquake.The result shows that the ground motion was remarkable.The maximum displacement amplitude recorded by GPS is greater than the coseismic deformation which is observed in limited region.The maximum displacement at XJYT station,which is 60 km away from the epicenter,is about 74.7 mm westward and 39.9 mm northward.The coseismic deformation at XJYT on the other hand,is about 20.0 mm westward and 9.8 mm northward.This earthquake may be trigged by the 2008 Yutian M_s 7.3earthquake in some degree.
The ground motion and coseismic deformation of 2014 Yutian M_s7.3 earthquake are acquired by processing the data from continuous GPS stations around the earthquake.The result shows that the ground motion was remarkable.The maximum displacement amplitude recorded by GPS is greater than the coseismic deformation which is observed in limited region.The maximum displacement at XJYT station,which is 60 km away from the epicenter,is about 74.7 mm westward and 39.9 mm northward.The coseismic deformation at XJYT on the other hand,is about 20.0 mm westward and 9.8 mm northward.This earthquake may be trigged by the 2008 Yutian M_s 7.3earthquake in some degree.
引文
甘卫军,季强,张锐,师宏波,2012.中国大陆构造环境监测网络的建设与应用.工程研究:跨学科视野中的工程,4:324-331.
万永革,沈正康,盛书中,徐晓枫,2011.2008年新疆于田7.3级地震对周围断层的影响及其正断层机制的区域构造解释,地球物理学报,53(2):280-289.
王凡,陈为涛,王敏,沈正康,王阎昭,万永革,2011.利用GPS观测资料分析2008年于田Ms7.3地震的同震位移及震后形变.地球物理学报,54(9):2250-2255.
王敏,2009.GPS观测结果的精华分析与中国大陆现今地壳形变场研究.北京:中国地震局地质研究所.
徐锡伟,Tapponnier P.,Woerd J.V.D.,Ryerson F.J.,王峰,郑荣章,陈文彬,马文涛,于贵华,陈桂华,Meriaux A.S.,2003.阿尔金断裂带晚第四纪左旋走滑速率及其构造运动转换模式讨论.中国科学(D辑),33(10):967-974.
徐锡伟,谭锡斌,吴国栋,陈建波,沈军,方伟,宋和平,2011.2008年于田Ms7.3地震地表破裂带特征及其构造属性讨论.地震地质,33(2):462-471.
张勇,许力生,陈运泰.汪荣江,2014.2014年2月12日于田MW6.9地震破裂过程初步反演:兼论震源机制对地震破裂过程反演的影响.地震学报,36(2):159-164.
张广伟,雷建设,孙长青,2014.2014年2月12日新疆于田Ms7.3级地震主震及余震序列重定位研究.地球物理学报,57(3):1012-1020.doi:10.6038/cjg20140330.
Boehm J.,Niell A.,Tregoning P.,Schuh H.,2006.Globalmapping function(GMF):a new empirical mapping function based on numerical weather model data.Geophys Res.Lett.,33:L07304.doi:10.1029/2005GL025546.
Boehm J.,Heinkelmann R.,Schuh H.,2007.Short note:a global model of pressure and temperature for geodetic applications.J.Geod.,81(20):679-683.doi:10.1007/s00190-007-0135-3.
Cowgill E.,Gold D.R.,Chen X.H.,Wang X.F.,Arrowsmith J.R.,Southon J,2009.Low Quaternary slip rate reconciles geodetic and geologic rates along the AItynTagh fault.northwestern Tibet.Geology,37(7):647-650.
Dziewonski A.M.,Anderson D.L.,1981a.Preliminary reference earth model.Physics of Earth and Planetary Interiors,25:297-356.
Dziewonski A.M.,Chou T.A.,Woodhouse J.H.,1981b.Determination of earthquake source parameters from waveform data for studies of global and regional seismicity.J.Geophys Res.,86:2825-2852.
Delouis B.,Nocquet J.M.,Vallce M.,2010.Slip distribution of the February 27,2010 M_w=8.8 Maule Earthquake,central Chile.from static and high-rate GPS,InSAR,and broadband teleseismic data.Geophys Res.Lett.,37:L17305.doi:10.1029/2010GL043899.
Ekstrlm G.,Nettles M.,Dziewonski A.M.,2012.The global CMT project 2004-2010:Centroid-moment tensors for 13,017 earthquakes.Phys.Earth Planet Inter..200-201:1-9.
E16segui P,Davis J.L.,Oberlander D.,Baena R.,Ekstrom G,2006.Accuracy of high-rate GPS for seismology.Geophys Res.Lett.,33:L11308.doi:10.1029/2006GL026065.
Gan W.J.,Zhang PZ.,Shen Z.K.,Niu Z.J.,Wang M.,Wan Y.G,,Zhou D.M.,Cheng J.,2007.Present-day crustal motion within the Tibetan Plateau inferred from GPS measurements.J.Geophys Res.,112:B08416.doi:10.1029/2005JB004120.
Ji C.,Larson K.M.,Tan Y,Kenneth W.H.,Choi K.,2004.Slip history of the 2003 San Simeon earthquake constrained by combining 1 Hz GPS,strong motion,and teleseismic data.Geophys Res.Lett.,31:L17608.doi:10.1029/2004GL020448.
Jiang Z.,Wang M.,Wang Y.,Wu Y.,Che S·,Shen Z.K.,Li Q.,2014.GPS constrained coseismic source and slip distribution of the 2013 Mw,6.6 Lushan,China,earthquake and its tectonic implications.Geophysical Research Letters,41(2):407-413.
Langbein J.,Bock Y,2004.High-rate real-time GPS network at Parkfield Utility for detecting fault slip and seismic displacements.Geophys Res.Lett.,31:L15S20.doi:10.1029/2003GL019408.
Liang S.M.,Gan W.J.,Shen C.Z.,Xiao GR.,Liu J.,Chen W.T.,Ding X.G.,Zhou D.M.,2013.Three-dimensional velocity field of present-day cnustal motion of Tibetan Plateau derived from GPS measurements.J.Geophys.Res.,118(10):5722-5732.doi:10.1002/2013JB010503.
Okada Y,1985.Surface deformation due to shear and tensile faults in a half-space.Bulletin of the Seismological Society of America,75(4):1135-1154.
Reid H.F.,1910.The California Earthquake of April 18,1906:The Mechanics of the Earthquake.Carnegie Inst..
Sun WK.,Okubo S.,Fu G.Y,Araya A.,2009.General formulations of global co-seismic deformations caused by an arbitrary dislocation in a spherically symmetric earth model-applicable to deformed earth surface and space-fixed point.Geophys J.Int.,177:817-833.
Wang R.J.,Martin L.F..Roth F.,2006.PSGRN/PSCMP-a new code for calculating co-and post-seismic deformation,geoid and gravity changes based on the viscoelastic-gravitational dislocation theory.Computer and Geosciences,32(4):527-541.
Wald J.D.,Heaton H.T.and Hudnut K.W.,1996.The slip history of the 1994 Northridge,California,earthquake determined from strong-motion,teleseismic,GPS,and leveling data.Bulletin of the Seismological Society of America,86(1B):S49-S70.
Yin H.T.,Wdowinski S.,Liu X.Q.,Gan W.J.,Huang B.,Xiao G.R.,Liang S.M.,2013.Strong ground motion recorded by high-rate GPS of the 2008 Ms8.0 Wenchuan earthquake,China.Seis.Res.Lett.,84(2):210-218.
2 http://www.globalcmt.org,http://www.cea-igp.ac.cn/tpxw/269348.shtml
1 http://www.ceic.ac.cn/
2 http://www.cea-igp.ac.cn/tpxw/269361.shtml
3 http://www.igg.cas.cn/xwac/yjcg/201402/t20140214_4032524.html
万永革,沈正康,盛书中,徐晓枫,2011.2008年新疆于田7.3级地震对周围断层的影响及其正断层机制的区域构造解释,地球物理学报,53(2):280-289.
王凡,陈为涛,王敏,沈正康,王阎昭,万永革,2011.利用GPS观测资料分析2008年于田Ms7.3地震的同震位移及震后形变.地球物理学报,54(9):2250-2255.
王敏,2009.GPS观测结果的精华分析与中国大陆现今地壳形变场研究.北京:中国地震局地质研究所.
徐锡伟,Tapponnier P.,Woerd J.V.D.,Ryerson F.J.,王峰,郑荣章,陈文彬,马文涛,于贵华,陈桂华,Meriaux A.S.,2003.阿尔金断裂带晚第四纪左旋走滑速率及其构造运动转换模式讨论.中国科学(D辑),33(10):967-974.
徐锡伟,谭锡斌,吴国栋,陈建波,沈军,方伟,宋和平,2011.2008年于田Ms7.3地震地表破裂带特征及其构造属性讨论.地震地质,33(2):462-471.
张勇,许力生,陈运泰.汪荣江,2014.2014年2月12日于田MW6.9地震破裂过程初步反演:兼论震源机制对地震破裂过程反演的影响.地震学报,36(2):159-164.
张广伟,雷建设,孙长青,2014.2014年2月12日新疆于田Ms7.3级地震主震及余震序列重定位研究.地球物理学报,57(3):1012-1020.doi:10.6038/cjg20140330.
Boehm J.,Niell A.,Tregoning P.,Schuh H.,2006.Globalmapping function(GMF):a new empirical mapping function based on numerical weather model data.Geophys Res.Lett.,33:L07304.doi:10.1029/2005GL025546.
Boehm J.,Heinkelmann R.,Schuh H.,2007.Short note:a global model of pressure and temperature for geodetic applications.J.Geod.,81(20):679-683.doi:10.1007/s00190-007-0135-3.
Cowgill E.,Gold D.R.,Chen X.H.,Wang X.F.,Arrowsmith J.R.,Southon J,2009.Low Quaternary slip rate reconciles geodetic and geologic rates along the AItynTagh fault.northwestern Tibet.Geology,37(7):647-650.
Dziewonski A.M.,Anderson D.L.,1981a.Preliminary reference earth model.Physics of Earth and Planetary Interiors,25:297-356.
Dziewonski A.M.,Chou T.A.,Woodhouse J.H.,1981b.Determination of earthquake source parameters from waveform data for studies of global and regional seismicity.J.Geophys Res.,86:2825-2852.
Delouis B.,Nocquet J.M.,Vallce M.,2010.Slip distribution of the February 27,2010 M_w=8.8 Maule Earthquake,central Chile.from static and high-rate GPS,InSAR,and broadband teleseismic data.Geophys Res.Lett.,37:L17305.doi:10.1029/2010GL043899.
Ekstrlm G.,Nettles M.,Dziewonski A.M.,2012.The global CMT project 2004-2010:Centroid-moment tensors for 13,017 earthquakes.Phys.Earth Planet Inter..200-201:1-9.
E16segui P,Davis J.L.,Oberlander D.,Baena R.,Ekstrom G,2006.Accuracy of high-rate GPS for seismology.Geophys Res.Lett.,33:L11308.doi:10.1029/2006GL026065.
Gan W.J.,Zhang PZ.,Shen Z.K.,Niu Z.J.,Wang M.,Wan Y.G,,Zhou D.M.,Cheng J.,2007.Present-day crustal motion within the Tibetan Plateau inferred from GPS measurements.J.Geophys Res.,112:B08416.doi:10.1029/2005JB004120.
Ji C.,Larson K.M.,Tan Y,Kenneth W.H.,Choi K.,2004.Slip history of the 2003 San Simeon earthquake constrained by combining 1 Hz GPS,strong motion,and teleseismic data.Geophys Res.Lett.,31:L17608.doi:10.1029/2004GL020448.
Jiang Z.,Wang M.,Wang Y.,Wu Y.,Che S·,Shen Z.K.,Li Q.,2014.GPS constrained coseismic source and slip distribution of the 2013 Mw,6.6 Lushan,China,earthquake and its tectonic implications.Geophysical Research Letters,41(2):407-413.
Langbein J.,Bock Y,2004.High-rate real-time GPS network at Parkfield Utility for detecting fault slip and seismic displacements.Geophys Res.Lett.,31:L15S20.doi:10.1029/2003GL019408.
Liang S.M.,Gan W.J.,Shen C.Z.,Xiao GR.,Liu J.,Chen W.T.,Ding X.G.,Zhou D.M.,2013.Three-dimensional velocity field of present-day cnustal motion of Tibetan Plateau derived from GPS measurements.J.Geophys.Res.,118(10):5722-5732.doi:10.1002/2013JB010503.
Okada Y,1985.Surface deformation due to shear and tensile faults in a half-space.Bulletin of the Seismological Society of America,75(4):1135-1154.
Reid H.F.,1910.The California Earthquake of April 18,1906:The Mechanics of the Earthquake.Carnegie Inst..
Sun WK.,Okubo S.,Fu G.Y,Araya A.,2009.General formulations of global co-seismic deformations caused by an arbitrary dislocation in a spherically symmetric earth model-applicable to deformed earth surface and space-fixed point.Geophys J.Int.,177:817-833.
Wang R.J.,Martin L.F..Roth F.,2006.PSGRN/PSCMP-a new code for calculating co-and post-seismic deformation,geoid and gravity changes based on the viscoelastic-gravitational dislocation theory.Computer and Geosciences,32(4):527-541.
Wald J.D.,Heaton H.T.and Hudnut K.W.,1996.The slip history of the 1994 Northridge,California,earthquake determined from strong-motion,teleseismic,GPS,and leveling data.Bulletin of the Seismological Society of America,86(1B):S49-S70.
Yin H.T.,Wdowinski S.,Liu X.Q.,Gan W.J.,Huang B.,Xiao G.R.,Liang S.M.,2013.Strong ground motion recorded by high-rate GPS of the 2008 Ms8.0 Wenchuan earthquake,China.Seis.Res.Lett.,84(2):210-218.
2 http://www.globalcmt.org,http://www.cea-igp.ac.cn/tpxw/269348.shtml
1 http://www.ceic.ac.cn/
2 http://www.cea-igp.ac.cn/tpxw/269361.shtml
3 http://www.igg.cas.cn/xwac/yjcg/201402/t20140214_4032524.html
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