青海玉树地震差分干涉雷达同震形变测量
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摘要
2010-04-14青海玉树发生7.1级地震后,作者利用震前和震后获取的日本ALOS卫星PALSAR遥感数据,开展了差分干涉雷达(D-InSAR)地震同震形变测量与分析。结果表明:玉树地震引起较大范围地表变形,地震变形沿玉树—甘孜断裂带向南东东方向扩展,在N33.7°,E96.81°附近达到最大形变量,D-InSAR监测到雷达视向上的最大形变量为35cm。地表形变特征对于评价玉树地震破坏程度、推断断层性质、研究地震形变和地震孕育特征具有重要的参考价值。
An earthquake of magnitude 7.1 suddenly occurred in Yushu county of Qinghai province on April 14, 2010. This paper presents the studies of using the data of Advanced Land Observing Satellite-Phased Array type L-band Synthetic Aperture Radar (ALOS-PALSAR) before and after the earthquake to examine and calculate the co-seismic ground deformation. The dif-ferential SAR interferometry (D-InSAR) technique is used. The results show that the earthquake caused the ground deformation over a large area. The extension of the ground deformation followed the south-east to east direction and along the Yushu-Ganzi fault zone. The largest deformation was found about 350 mm at 33.7°N 96.81°E. It is along the line of sight (LOS) of SAR and can be detected with D-InSAR technique. The detected ground deformation was mainly uplifting. The detected ground deforma-tion has an important value for evaluating the extent of ground damage and seismicity in Yushu after earthquake, inferring the nature of the quake faulting, and studying characteristics of seismic deformation.
An earthquake of magnitude 7.1 suddenly occurred in Yushu county of Qinghai province on April 14, 2010. This paper presents the studies of using the data of Advanced Land Observing Satellite-Phased Array type L-band Synthetic Aperture Radar (ALOS-PALSAR) before and after the earthquake to examine and calculate the co-seismic ground deformation. The dif-ferential SAR interferometry (D-InSAR) technique is used. The results show that the earthquake caused the ground deformation over a large area. The extension of the ground deformation followed the south-east to east direction and along the Yushu-Ganzi fault zone. The largest deformation was found about 350 mm at 33.7°N 96.81°E. It is along the line of sight (LOS) of SAR and can be detected with D-InSAR technique. The detected ground deformation was mainly uplifting. The detected ground deforma-tion has an important value for evaluating the extent of ground damage and seismicity in Yushu after earthquake, inferring the nature of the quake faulting, and studying characteristics of seismic deformation.
引文
Atsushi I,Marina K,and Hisatoshi B..2007.Study of ground surface displacement estimation using ALOS/PALSAR D-InSAR interferometry.IGARSS’07,Barcelona,Spain
Bamler R and Hartl P.1998.Synthetic aperture radar interferometry.Inverse Problems,14(4):1—54
Chen Y T,Guo X Y,Jiang C S and Zhang Y.2010.Analysis report of Yushu Earthquake on April14th,2010.http://image.dili360.com/www/201004/20100417.pdf
Ge L,Zhang K and Alex N G.2008.Preliminary results of satellite radar differential nterferometry for the co-seismic deformation of the12may2008MS8.0Wenchuan earthquake.Geographic in-formation sciences,14(1):12—19
Massonnet D,Rossi M and Carmona C.1993.The displacement field of the Landers earthquake mapped by radar interferometry.Nature,364:138—142
Massonnet D and Feigl K.1998.Radar interferometry and its applica-tion to changes in the earth’s surface,Review of Geophysics,36:441—500
Qiao X J and Guo L M.2007.Study on Jiashi strong earthquake swarm area by InSAR.Journal Of Geodesy And Geodynamics,27(1):7—13
Shao Y,Tan Q L,Liu H and Guo H D.2002.Study on SAR differential interferometry technology and its application to the Mani earth-quake of1997.Chinese Journal of Geophysics,45(Supplement):205—213
Sun J B,Liang F and Shen Z K.2008.InSAR deformation observation and preliminary analysis of the Ms8Wenchuan earthquake.Seismology and Geology,30(3):787—795
Xie C,Li Z and Li X W.2009.An Improved Iermanent Scatterers Method for Analysis of Deformation over Permafrost Regions of the Qinghai-Tibetan Plateau.Wuhan University(Geomatics and Information).34(10),1199—1203
Xie C,Li Z and Li X W.2010.Analysis of deformation over permafrost regions of Qinghai-Tibet Plateau based on permanent scatterers.International Journal of Remote Sensing,31(8):1995—2008
Zebker H A,Rosen P A and Goldstein R M.1994.On the derivation of coseismic displacement fields using differential radar intereferoe-metry:The Lander earthquakes.J.Geophys.Res.,99(B10):19617—19634
陈运泰,郭祥云,蒋长胜,张勇.2010.2010年4月14日青海省玉树县7.1级地震分析报告.http://image.dili360.com/www/201004/20100417.pdf.(2010-06-18)
乔学军,郭利民.2007.新疆伽师强震群区的InSAR观测研究.大地测量与地球动力学,27(1):7—13
邵芸,谭衢霖,刘浩,郭华东.2002.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.地球物理学报,45(增刊):205—213
孙建宝,梁芳,沈正康.2008.汶川MS8.0地震InSAR形变观测及初步分析.地震地质,30(3):787—795
谢酬,李震,李新武.2009.青藏高原冻土形变监测的永久散射体方法研究,武汉大学学报(信息科学版),34(10):1199—1203
Bamler R and Hartl P.1998.Synthetic aperture radar interferometry.Inverse Problems,14(4):1—54
Chen Y T,Guo X Y,Jiang C S and Zhang Y.2010.Analysis report of Yushu Earthquake on April14th,2010.http://image.dili360.com/www/201004/20100417.pdf
Ge L,Zhang K and Alex N G.2008.Preliminary results of satellite radar differential nterferometry for the co-seismic deformation of the12may2008MS8.0Wenchuan earthquake.Geographic in-formation sciences,14(1):12—19
Massonnet D,Rossi M and Carmona C.1993.The displacement field of the Landers earthquake mapped by radar interferometry.Nature,364:138—142
Massonnet D and Feigl K.1998.Radar interferometry and its applica-tion to changes in the earth’s surface,Review of Geophysics,36:441—500
Qiao X J and Guo L M.2007.Study on Jiashi strong earthquake swarm area by InSAR.Journal Of Geodesy And Geodynamics,27(1):7—13
Shao Y,Tan Q L,Liu H and Guo H D.2002.Study on SAR differential interferometry technology and its application to the Mani earth-quake of1997.Chinese Journal of Geophysics,45(Supplement):205—213
Sun J B,Liang F and Shen Z K.2008.InSAR deformation observation and preliminary analysis of the Ms8Wenchuan earthquake.Seismology and Geology,30(3):787—795
Xie C,Li Z and Li X W.2009.An Improved Iermanent Scatterers Method for Analysis of Deformation over Permafrost Regions of the Qinghai-Tibetan Plateau.Wuhan University(Geomatics and Information).34(10),1199—1203
Xie C,Li Z and Li X W.2010.Analysis of deformation over permafrost regions of Qinghai-Tibet Plateau based on permanent scatterers.International Journal of Remote Sensing,31(8):1995—2008
Zebker H A,Rosen P A and Goldstein R M.1994.On the derivation of coseismic displacement fields using differential radar intereferoe-metry:The Lander earthquakes.J.Geophys.Res.,99(B10):19617—19634
陈运泰,郭祥云,蒋长胜,张勇.2010.2010年4月14日青海省玉树县7.1级地震分析报告.http://image.dili360.com/www/201004/20100417.pdf.(2010-06-18)
乔学军,郭利民.2007.新疆伽师强震群区的InSAR观测研究.大地测量与地球动力学,27(1):7—13
邵芸,谭衢霖,刘浩,郭华东.2002.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.地球物理学报,45(增刊):205—213
孙建宝,梁芳,沈正康.2008.汶川MS8.0地震InSAR形变观测及初步分析.地震地质,30(3):787—795
谢酬,李震,李新武.2009.青藏高原冻土形变监测的永久散射体方法研究,武汉大学学报(信息科学版),34(10):1199—1203
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