GRACE卫星重力观测在强震监测中的应用及分析
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摘要
利用GRACE卫星重力月重力场模型、位错理论,结合向上延拓技术,模拟、计算了苏门答腊和汶川大地震区域卫星轨道高度处的理论同震重力变化和同震形变结果,根据卫星重力异常图进一步了解了龙门山断裂区域的深部构造特征,揭示了大地震发生的地球物理条件。
The theoretical coseismic gravity changes in the height of satellite orbit and coseismic deformation results of Sumatra-Adaman and Wenchuan earthquakes are simulated and calculated by using satellite gravity models,dislocation theory and up continuation technique,the characteristics of deep structures of Longmenshan fault region geophysical condition for strong earthquake occurrence are revealed.
The theoretical coseismic gravity changes in the height of satellite orbit and coseismic deformation results of Sumatra-Adaman and Wenchuan earthquakes are simulated and calculated by using satellite gravity models,dislocation theory and up continuation technique,the characteristics of deep structures of Longmenshan fault region geophysical condition for strong earthquake occurrence are revealed.
引文
1王勇,张为民.高精度绝对重力测量在地壳垂直运动研究中的作用和应用前景[J].地壳形变与地震,1997,(3):98-102.(WangYong and Zhang Weimin.The appli-cation and its future of absolute gravity surveying in the study of crustal vertical movement[J].Crustal Deformation and Earthquake,1997,(3):98-102)
2许厚泽.重力观测在中国地壳运动观测网络中的作用[J].大地测量与地球动力学,2003,(3):1-3.(Xu Houze.Function of gravimetry in CMONOC[J].Journal of Geodesy and Geodynamics,2003,(3):1-3)
3祝意青.北祁连地区震前重力场变化特征[J].地壳形变与地震,1996,(2):58-62.(Zhu Yiqing.Characters of gravity field change before earthquake in the north Qilian ar-ea[J].Crustal Deformation and Earthquake,1996,(2):58-62)
4祝意青.1993年祁连6.0级地震前后重力与断层形变异常分析[J].高原地震,1997,9(1):59-64.(Zhu Yiqing.Analysis on gravity and fault deformation anomalous variation before and after Qilian earthquake with MS6.0in1993[J].Earthquake Research In Plateau,1997,9(1):59-64)
5祝意青,胡斌,张永志.永登5.8级地震前后的重力场动态图像特征研究[J].地壳形变与地震,1999,(1):71-77.(Zhu Yiqing,Hu Bin and Zhang Yongzhi.Study of the dynamic pattern characteristics of gravity field around Yong-deng earthquake ofMs5.8[J].Crustal Deformation and Earthquake,1999,(1):71-77)
6付广裕,等.昆仑山口西8.1级地震前后重力场动态变化[J].大地测量与地球动力学,2003,(1):42-46.(Fu Guangyu,et al.Dynamic gravity changes before and after earthquake ofMs8.1occurred in west to Kunlun mountain pass[J].Journal of Geodesy and Geodynamics,2003,(1):42-46)
7Zhang Weimin,et al.Test of the uplift of Tibetan Plateau by FG5absolute gravimeter at Lhasa station[J].Chinese Sci-ence Bulletin,2001,46(3),256-258.
8王勇,等.重复绝对重力观测的滇西地区和拉萨点的重力变化及其意义[J].地球物理学报,2004,47(1):95-100.(Wang Yong,et al.Gravity change detected by repeat-ed absolute gravity measurements in the western Yunnan and Lhasa,China and its implication[J].Chinese J.Geophys.,2004,47(1):95-100)
9Tanaka Y,et al.First detection of absolute gravity change caused by earthquake[J].Geophy.Res.Lett.,2001,28(15),2929-2981.
10Han S C and Shum C K.Crustal dilatation observed by GRACE after the2004Sumatra-Andaman earthquake[J].Science,2006,313:658-662.
11方剑.利用卫星重力数据计算地球内部密度异常[J].地球物理学进展,1994,9(3):60-65.(Fang Jian.Investi-gation of anomaly density by using satellite gravity data[J].Progress In Geophysics,1994,9(3):60-65)
12董瑞树,冉洪流.青藏高原周缘地区大地震发生的地球物理条件的新认识[J].山西地震,2003,4:40-42.(Dong Ruishu and Ran Hongliu.A new viewpoint about geophysical condition for strong earthquake occurrence in periphery of Qinghai-Tibet Plateau[J].Earthquake Re-search In Shanxi,2003,4:40-42)
13Sun W and Okubo S.Surface potential and gravity changes due to internal dislocations in a spherical Earth-Ⅰ.Theory for a point dislocation[J].Geophys.J.Int.,1993,114:569-592.
14李瑞浩.重力学引论[M].北京:地震出版社,1988.(Li Ruihao.Gravitation introduction[M].Beijing:Seismolgical Press,1988)
15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):1080-1084.(Xing Lelin,et al.Detection of co-seismic and post-seismic deformation caused by the Sumatra-Andaman earthquake using GRACE[J].Geomatics and Information Science of Wuhan University,2009,34(9):1080-1084)
16Chen J L,et al.GRACE detects coseismic and postseismic deformation from the Sumatra-Andaman earthquake[J].Geophys.Res.Lett.,34,2007,L13302,doi:10.1029/2007GL030356.
2许厚泽.重力观测在中国地壳运动观测网络中的作用[J].大地测量与地球动力学,2003,(3):1-3.(Xu Houze.Function of gravimetry in CMONOC[J].Journal of Geodesy and Geodynamics,2003,(3):1-3)
3祝意青.北祁连地区震前重力场变化特征[J].地壳形变与地震,1996,(2):58-62.(Zhu Yiqing.Characters of gravity field change before earthquake in the north Qilian ar-ea[J].Crustal Deformation and Earthquake,1996,(2):58-62)
4祝意青.1993年祁连6.0级地震前后重力与断层形变异常分析[J].高原地震,1997,9(1):59-64.(Zhu Yiqing.Analysis on gravity and fault deformation anomalous variation before and after Qilian earthquake with MS6.0in1993[J].Earthquake Research In Plateau,1997,9(1):59-64)
5祝意青,胡斌,张永志.永登5.8级地震前后的重力场动态图像特征研究[J].地壳形变与地震,1999,(1):71-77.(Zhu Yiqing,Hu Bin and Zhang Yongzhi.Study of the dynamic pattern characteristics of gravity field around Yong-deng earthquake ofMs5.8[J].Crustal Deformation and Earthquake,1999,(1):71-77)
6付广裕,等.昆仑山口西8.1级地震前后重力场动态变化[J].大地测量与地球动力学,2003,(1):42-46.(Fu Guangyu,et al.Dynamic gravity changes before and after earthquake ofMs8.1occurred in west to Kunlun mountain pass[J].Journal of Geodesy and Geodynamics,2003,(1):42-46)
7Zhang Weimin,et al.Test of the uplift of Tibetan Plateau by FG5absolute gravimeter at Lhasa station[J].Chinese Sci-ence Bulletin,2001,46(3),256-258.
8王勇,等.重复绝对重力观测的滇西地区和拉萨点的重力变化及其意义[J].地球物理学报,2004,47(1):95-100.(Wang Yong,et al.Gravity change detected by repeat-ed absolute gravity measurements in the western Yunnan and Lhasa,China and its implication[J].Chinese J.Geophys.,2004,47(1):95-100)
9Tanaka Y,et al.First detection of absolute gravity change caused by earthquake[J].Geophy.Res.Lett.,2001,28(15),2929-2981.
10Han S C and Shum C K.Crustal dilatation observed by GRACE after the2004Sumatra-Andaman earthquake[J].Science,2006,313:658-662.
11方剑.利用卫星重力数据计算地球内部密度异常[J].地球物理学进展,1994,9(3):60-65.(Fang Jian.Investi-gation of anomaly density by using satellite gravity data[J].Progress In Geophysics,1994,9(3):60-65)
12董瑞树,冉洪流.青藏高原周缘地区大地震发生的地球物理条件的新认识[J].山西地震,2003,4:40-42.(Dong Ruishu and Ran Hongliu.A new viewpoint about geophysical condition for strong earthquake occurrence in periphery of Qinghai-Tibet Plateau[J].Earthquake Re-search In Shanxi,2003,4:40-42)
13Sun W and Okubo S.Surface potential and gravity changes due to internal dislocations in a spherical Earth-Ⅰ.Theory for a point dislocation[J].Geophys.J.Int.,1993,114:569-592.
14李瑞浩.重力学引论[M].北京:地震出版社,1988.(Li Ruihao.Gravitation introduction[M].Beijing:Seismolgical Press,1988)
15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):1080-1084.(Xing Lelin,et al.Detection of co-seismic and post-seismic deformation caused by the Sumatra-Andaman earthquake using GRACE[J].Geomatics and Information Science of Wuhan University,2009,34(9):1080-1084)
16Chen J L,et al.GRACE detects coseismic and postseismic deformation from the Sumatra-Andaman earthquake[J].Geophys.Res.Lett.,34,2007,L13302,doi:10.1029/2007GL030356.
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