利用星载D-INSAR技术获取的地表形变场提取玛尼地震震源断层参数
|
摘要
以1997年11月8日西藏玛尼地震为例,通过三通差分干涉处理,获取了玛尼地震同震位移场.并在此基础上,采用弹性半空间介质中的位错模型,正演了玛尼地震发震断层某些几何学和运动学性质.结果表明:（1）发震断层两侧的变形场在垂向距断层110 km的区域仍受同震形变场影响.地表破裂带所造成的非相干性条带贯穿整个图像,长约110km.（2）发震断层最大水平位错达7.96 m.（3）发震断层可分为4段.其中中间两段所产生的变形场较大,长度分别为27和37 km,平均滑动值分别为6500和6000 mm,深度均为35km,前者是玛尼地震的主破裂面.西段和东段规模较小,长度分别为23和26km,前者滑动量为4000 mm,后者为5800 mm,两者深度分别为20和18km.
引文
1 Massonnet D, Rossi M, Carmona C, et al. The displacement field of the Landers earthquake mapped by radar interferometry. Nature, 1993,364: 138-142
2 Meyer B, Armijo R, Massonnet D, et al. The 1995 Grevena (Northern Greece) earthquake: Fault model constrained with tectonic observation and SAR interferometry. Geophy Res Letters, 1996, 23(19): 2677-2680
3 Peltzer G, Crampe F, King G, et al. Evidence of nonlinear elasticity of the crust from the MW7.6 Mani (Tibet) earthquake. Science, 1999, 286: 272-276
4 Sigmundssou, F. Opening of an eruptive fissure and seaward displacement at Piton de la Fournaise volcano measured by RADARSAT satellite radar interferometry. Geophy Res Letters, 1999, 26(5): 533-536
5 郭华东,王长林.全天侯全天时三维航天遥感技术——介绍航天飞机雷达地形测图计划.遥感信息,2000,（1）:47～48
6 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.科学通报,2000,45（23）:2550～2554
7 单新建,宋晓宇,柳稼航,等.星载INSAR技术在不同地形地貌区域的DEM提取及其应用评价.科学通报,2001,46（24）:2074～2079
8 Zebker H A, Rosen P A,Goldstein R M, et al. On the derivation of coseismic displacement fields using differential radar interferometry: The Landers earthquake. J Geophys Res, 1994, 99B(10): 19617-19634
9 Okada Y. Surface deformation due to shear and tensile faults in a half-space. Bull Seism Soc Am, 1985, 75(4): 1135-1154
10 丁国瑜,卢演俦.板内块体的现代运动.见:马杏垣主编.中国岩石圈动力学地图集.北京:中国地图出版社,1989.21～22
11 汪一鹏.青藏高原活动构造基本特征.活动断层研究,1998,（6）:135～144
12 国家地震局《阿尔金活动断裂带课题组》.阿尔金活动断裂带.北京:地震出版社,1992
13 马 瑾,单新建.利用遥感技术研究断层现今活动的探索.地震地质,2000,22（3）:210～215
14 徐锡伟,宋方敏,杨晓平,等.中国大陆地表破裂型潜在震源区的地震地质学综合判定.震情研究,2000,44（1）:14～26
15 许力生,陈运泰1997年中国西藏玛尼Ms=79地震的时空破裂过程.地震学报,1999,21（5）:1～8
16 Feigl K L, Arnaud S, Dominique J. Estimation of an earthquake focal mechanism from a satellite radar interferogram: Application to the December 4,1992 Landers aftershock. Geophy Res Letters, 1995, 22(9): 1037-1040
17 Feigl K L, Dupre E. RNGCHN: a program to calculate displacement components from dislocation in an elastic half-space with application for modeling geodetic measurements of crustal deformation. Computers &Geosciences, 1999, 25: 695-704
2 Meyer B, Armijo R, Massonnet D, et al. The 1995 Grevena (Northern Greece) earthquake: Fault model constrained with tectonic observation and SAR interferometry. Geophy Res Letters, 1996, 23(19): 2677-2680
3 Peltzer G, Crampe F, King G, et al. Evidence of nonlinear elasticity of the crust from the MW7.6 Mani (Tibet) earthquake. Science, 1999, 286: 272-276
4 Sigmundssou, F. Opening of an eruptive fissure and seaward displacement at Piton de la Fournaise volcano measured by RADARSAT satellite radar interferometry. Geophy Res Letters, 1999, 26(5): 533-536
5 郭华东,王长林.全天侯全天时三维航天遥感技术——介绍航天飞机雷达地形测图计划.遥感信息,2000,（1）:47～48
6 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.科学通报,2000,45（23）:2550～2554
7 单新建,宋晓宇,柳稼航,等.星载INSAR技术在不同地形地貌区域的DEM提取及其应用评价.科学通报,2001,46（24）:2074～2079
8 Zebker H A, Rosen P A,Goldstein R M, et al. On the derivation of coseismic displacement fields using differential radar interferometry: The Landers earthquake. J Geophys Res, 1994, 99B(10): 19617-19634
9 Okada Y. Surface deformation due to shear and tensile faults in a half-space. Bull Seism Soc Am, 1985, 75(4): 1135-1154
10 丁国瑜,卢演俦.板内块体的现代运动.见:马杏垣主编.中国岩石圈动力学地图集.北京:中国地图出版社,1989.21～22
11 汪一鹏.青藏高原活动构造基本特征.活动断层研究,1998,（6）:135～144
12 国家地震局《阿尔金活动断裂带课题组》.阿尔金活动断裂带.北京:地震出版社,1992
13 马 瑾,单新建.利用遥感技术研究断层现今活动的探索.地震地质,2000,22（3）:210～215
14 徐锡伟,宋方敏,杨晓平,等.中国大陆地表破裂型潜在震源区的地震地质学综合判定.震情研究,2000,44（1）:14～26
15 许力生,陈运泰1997年中国西藏玛尼Ms=79地震的时空破裂过程.地震学报,1999,21（5）:1～8
16 Feigl K L, Arnaud S, Dominique J. Estimation of an earthquake focal mechanism from a satellite radar interferogram: Application to the December 4,1992 Landers aftershock. Geophy Res Letters, 1995, 22(9): 1037-1040
17 Feigl K L, Dupre E. RNGCHN: a program to calculate displacement components from dislocation in an elastic half-space with application for modeling geodetic measurements of crustal deformation. Computers &Geosciences, 1999, 25: 695-704
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