利用雷达差分干涉测量技术获取汶川M_S 8.0地震形变场
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摘要
利用ENVISAT/ASAR和ALOS/PALSAR数据,结合两路差分干涉测量技术获得了汶川地震的同震形变信息和震前、震后地面在卫星视线(light of sight,简称LOS)方向上的形变特征。结果表明,汶川地震引起的地面形变范围广,程度大,地震形变沿断层向北北东向扩展,所形成的差分干涉条纹明显。地面的形变特征对于推断断层的性质,研究地震形变和地震发育特征具有重要的参考价值。另外,将同震雷达差分干涉测量的结果与利用USGS发布的汶川地震有限元断层模型(finite fault model)反演的LOS方向的形变进行了对比验证,发现二者在断裂带的上盘具有较好的一致性,但在下盘却有较大的误差。通过不同传感器干涉结果的对比发现,L波段的雷达干涉结果更能够反映汶川大地震在龙门山断裂带附近的地面形变信息。
Satellite differential SAR interferometry has been widely accepted as a powerful tool to map co-,post-and inter-seismic deformation.In this study,ENVISAT/ASAR and ALOS/PALSAR datasets are used for monitoring the ground displacement of the Wenchuan MS 8.0 earthquake in China with two-pass differential interferometry,respectively.The displacement on light of sight has been archived.Results from interferograms show that the displacement caused by the shock spans along the fault zone in a large area.The characteristics of this displacement provide helpful information for the earthquake inversion.The LOS displacement on the upper plate is similar to the inversed displacement from the finite fault model of USGS while the down plate has a large error.The comparison of the differential SAR interferograms indictes that the L band SAR interferometry is more useful than C band for monitoring the ground displacement around the Longmenshan fault zones.
Satellite differential SAR interferometry has been widely accepted as a powerful tool to map co-,post-and inter-seismic deformation.In this study,ENVISAT/ASAR and ALOS/PALSAR datasets are used for monitoring the ground displacement of the Wenchuan MS 8.0 earthquake in China with two-pass differential interferometry,respectively.The displacement on light of sight has been archived.Results from interferograms show that the displacement caused by the shock spans along the fault zone in a large area.The characteristics of this displacement provide helpful information for the earthquake inversion.The LOS displacement on the upper plate is similar to the inversed displacement from the finite fault model of USGS while the down plate has a large error.The comparison of the differential SAR interferograms indictes that the L band SAR interferometry is more useful than C band for monitoring the ground displacement around the Longmenshan fault zones.
引文
[1]庄建琦,崔鹏,葛永刚,等.5.12汶川地震崩塌滑坡分布特征及影响因子评价——以都江堰至汶川公路沿线为例[J].地质科技情报,2009,28(2):16-22.
[2]Gan W,Zhang P Z,Shen Z K,et al.Present-day crustal mo-tion within the Tibetan Plateau inferred from GPS measure-ments[J].Journal of Geophysical Research,2007,112:B08416.
[3]董玉森,Ge Linlin,Chang Hsingchun,等.基于差分雷达干涉测量的矿区地面沉降监测研究[J].武汉大学学报:信息科学版,2007,32(10):888-891.
[4]Ge L,Li X,Rizos C,et al.GPS and GIS assisted radar inter-ferometry[J].Photogrammetric Engineering and Remote Sensing(PE&RS),2004,70(10):1173-1178.
[5]Massonnet D,Rossi M,Carmona C,et al.The displacement field of the Landers earthquake mapped by radar interferome-try[J].Nature,1993,364:138-142.
[6]Zebker H A,Rosen P A,Goldstein R M,et a1.Onthe deriva-tion of coseismic displacement fields using differential radar in-tereferoemetry:The Lander earthquakes[J].Journal of Geo-physical Research,1994,99:19617-19634.
[7]邵芸,谭衢霖,刘浩,等.雷达差分干涉测量技术及其应用研究——以1997年西藏玛尼7.9级地震区域形变测量为例[J].地球物理学报,2002,45(增刊):205-213.
[8]王超,刘智,张红,等.张北-尚义地震同震形变场雷达差分干涉测量[J].科学通报,2000,45(23):2550-2556.
[9]乔学军,郭利民.新疆伽师强震群区的InSAR观测研究[J].大地测量与地球动力学,2007,27(1):7-13.
[10]Ge L,Zhang K,Alex N G,et al,Preli minary results of satel-lite radar differential interferometry for the co-seismic deform-ation of the12May2008MS8.0Wenchuan earthquake[J].Geographic Information Sciences,2008,14(1):12-19.
[11]孙建宝,梁芳,沈正康,等.汶川MS8.0地震InSAR形变观测及初步分析[J].地震地质,2008,30(3):787-795.
[12]Massonnet D,Feigl K.Radar interferometry and its applica-tion to changes in the earth s surface[J].Reviewof Geophys-ics,1998,36:441-500.
[13]Askne J,Dammert P,Ulander L,et al.C-band repeat-pass interferometric SAR observations of the forest[J].IEEE Transactions on Geoscience and Remote Sensing,1997,35(1):25-35.
[14]Fruneau B,Pathier E,Raymond D,et al.Uplift of Tainan Tableland(SW Tai wan)revealed by SARinterferometry[J].Geophysical Research Letters,2001,28:3071-3074.
[15]Takeuchi S,Oguro Y.Acomparative study of coherence pat-terns in C-band and L-band interferometric SARfromtropical rain forest areas[J].Advances in Space Research,2003,32(11):2305-2310.
[16]Jacobsen K.Analyses of SRTM Elevation Models[C/CD]∥Anon.Proceedings of the EARSeL Workshop3D-Remote Sensing,Porto,[s.l.]:[s.n.],2005:105-110.
[17]Vrscaj B,Daroussin J,Montanarella L.SRTMas a Possible Source of Elevation Information for Soil-landscape Modelling[C]∥Anon.Digital terrain modelling development and ap-plications in a policy support environment.Berlin:Springer Berlin Heidelbery,2007:99-120.
[18]Wright T,Parsons B,Lu Z.Toward mapping surface deform-ation in three di mensions using InSAR[J].Geophysical Re-search Letters,2004,31(1):L01607.
[19]Ji C,Hel mberger D V.Preli minary Result of the May12,2008MS7.9Eastern Sichuan,China Earthquake[EB/OL].[2009-06-09]http:∥earthquake.usgs.gov/eqcenter/eqinthe-news/2008/us2008ryan/finite-fault.php.
[20]Ji C,Wald D J,Hel mberger D V.Source description of the1999Hector Mine,California earthquake.Part I:Wavelet do-maininversion theory and resolution analysis[J].Bulletin of the Seismological Society of America,2002,92(4):1192-1207.
[21]Okada Y.Internal deformation due to shear and tensile faults in a half-space[J].Bulletin of the Seismological Society of America,1992,82(2):1018-1040.
[22]Dammert P.Accuracy of I NSAR measurementsinforested ar-eas[C]∥ERS SARinterferometry.Proceedings ofthe Fringe96Workshop,Zurich,Switzerland,30September-2Octo-ber,1996.[S.l.]:[s.n.],1996:37-49.
[23]Bamler R,Hanssen R.Decorrelation induced by interpolation errors inInSAR[C]∥Anon.Proceedings ofInternational Ge-oscience and Remote Sensing SymposiumIGARSS97,Singa-pore,3August,1997.[S.l.]:[s.n.],1997:1710-1712.
[2]Gan W,Zhang P Z,Shen Z K,et al.Present-day crustal mo-tion within the Tibetan Plateau inferred from GPS measure-ments[J].Journal of Geophysical Research,2007,112:B08416.
[3]董玉森,Ge Linlin,Chang Hsingchun,等.基于差分雷达干涉测量的矿区地面沉降监测研究[J].武汉大学学报:信息科学版,2007,32(10):888-891.
[4]Ge L,Li X,Rizos C,et al.GPS and GIS assisted radar inter-ferometry[J].Photogrammetric Engineering and Remote Sensing(PE&RS),2004,70(10):1173-1178.
[5]Massonnet D,Rossi M,Carmona C,et al.The displacement field of the Landers earthquake mapped by radar interferome-try[J].Nature,1993,364:138-142.
[6]Zebker H A,Rosen P A,Goldstein R M,et a1.Onthe deriva-tion of coseismic displacement fields using differential radar in-tereferoemetry:The Lander earthquakes[J].Journal of Geo-physical Research,1994,99:19617-19634.
[7]邵芸,谭衢霖,刘浩,等.雷达差分干涉测量技术及其应用研究——以1997年西藏玛尼7.9级地震区域形变测量为例[J].地球物理学报,2002,45(增刊):205-213.
[8]王超,刘智,张红,等.张北-尚义地震同震形变场雷达差分干涉测量[J].科学通报,2000,45(23):2550-2556.
[9]乔学军,郭利民.新疆伽师强震群区的InSAR观测研究[J].大地测量与地球动力学,2007,27(1):7-13.
[10]Ge L,Zhang K,Alex N G,et al,Preli minary results of satel-lite radar differential interferometry for the co-seismic deform-ation of the12May2008MS8.0Wenchuan earthquake[J].Geographic Information Sciences,2008,14(1):12-19.
[11]孙建宝,梁芳,沈正康,等.汶川MS8.0地震InSAR形变观测及初步分析[J].地震地质,2008,30(3):787-795.
[12]Massonnet D,Feigl K.Radar interferometry and its applica-tion to changes in the earth s surface[J].Reviewof Geophys-ics,1998,36:441-500.
[13]Askne J,Dammert P,Ulander L,et al.C-band repeat-pass interferometric SAR observations of the forest[J].IEEE Transactions on Geoscience and Remote Sensing,1997,35(1):25-35.
[14]Fruneau B,Pathier E,Raymond D,et al.Uplift of Tainan Tableland(SW Tai wan)revealed by SARinterferometry[J].Geophysical Research Letters,2001,28:3071-3074.
[15]Takeuchi S,Oguro Y.Acomparative study of coherence pat-terns in C-band and L-band interferometric SARfromtropical rain forest areas[J].Advances in Space Research,2003,32(11):2305-2310.
[16]Jacobsen K.Analyses of SRTM Elevation Models[C/CD]∥Anon.Proceedings of the EARSeL Workshop3D-Remote Sensing,Porto,[s.l.]:[s.n.],2005:105-110.
[17]Vrscaj B,Daroussin J,Montanarella L.SRTMas a Possible Source of Elevation Information for Soil-landscape Modelling[C]∥Anon.Digital terrain modelling development and ap-plications in a policy support environment.Berlin:Springer Berlin Heidelbery,2007:99-120.
[18]Wright T,Parsons B,Lu Z.Toward mapping surface deform-ation in three di mensions using InSAR[J].Geophysical Re-search Letters,2004,31(1):L01607.
[19]Ji C,Hel mberger D V.Preli minary Result of the May12,2008MS7.9Eastern Sichuan,China Earthquake[EB/OL].[2009-06-09]http:∥earthquake.usgs.gov/eqcenter/eqinthe-news/2008/us2008ryan/finite-fault.php.
[20]Ji C,Wald D J,Hel mberger D V.Source description of the1999Hector Mine,California earthquake.Part I:Wavelet do-maininversion theory and resolution analysis[J].Bulletin of the Seismological Society of America,2002,92(4):1192-1207.
[21]Okada Y.Internal deformation due to shear and tensile faults in a half-space[J].Bulletin of the Seismological Society of America,1992,82(2):1018-1040.
[22]Dammert P.Accuracy of I NSAR measurementsinforested ar-eas[C]∥ERS SARinterferometry.Proceedings ofthe Fringe96Workshop,Zurich,Switzerland,30September-2Octo-ber,1996.[S.l.]:[s.n.],1996:37-49.
[23]Bamler R,Hanssen R.Decorrelation induced by interpolation errors inInSAR[C]∥Anon.Proceedings ofInternational Ge-oscience and Remote Sensing SymposiumIGARSS97,Singa-pore,3August,1997.[S.l.]:[s.n.],1997:1710-1712.
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