张北-尚义地震同震形变场雷达差分干涉测量
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摘要
用合成孔径雷达差分干涉测量技术获取1998年1月10日张北-尚义地震(Ms = 6.2级)的同震形变图, 利用地震前后欧洲遥感卫星1和2号合成孔径雷达(ERS-1/2 SAR)的三景数据做重复轨道差分处理得到震前震后的干涉纹图. 由视向形变图可知, 此次地震造成隆起形变, 形变中心位于114°20′E, 40°57′N, 最大视向位移量达25 cm, 形变集中在300 km2范围内, 根据地震同震形变场的空间分布特征分析了震源机理和孕震构造.
引文
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2 Zebker H A, Rosen P A, Goldstein R M, et al. On the derivation of coseismic displacement fields using differential radar interferometry: The Lander earthquakes. J Geophys Res, 1994, 99B(10): 19617～19634
3 Gabriel A K, Goldstein R M, Zebker H A. Mapping small elevation changes over large areas: Differential radar interferometry. J Geophys Res, 1989, 94B(7): 9183～9191
4 Massonnet D, Feigl K. Discrimination of geophysical phenomena in satellite radar interferometry. Geophys Res Lett, 1995, 22: 1537～1540
5 Feigl K, Sergent A, Jacq D. Estimation of an earthquake focal mechanism from a satellite radar interferogram: Application to the December 4, 1992 Landers aftershock. Geophys Res Lett, 1995, 22: 1037～1040
6 Carnec C, Massonnet D, King C. Two examples of the use of SAR interferometry on displacement fields of small spatial extent. Geophys Res Lett, 1996, 23: 3579～3582
7 Bear G, Sandwell D, Williams S, et al. Coseismic deformation associated with the November 1995, Mw = 7.1 Nuweiba earthquake, Gulf of Elat (Aqaba) detected by synthetic aperture radar interferometry. J Geophys Res, 1999, 104B(11): 25221～25232
8 张国民, 李 丽, 焦明若. 张北6.2级地震与强震成组活动. 地震, 1999, 19(2): 107～117
9 徐锡伟, 冉勇康, 周本刚, 等. 张北-尚义地震的地震构造环境与宏观破坏特征. 地震地质, 1998, 20(2): 135～145
10 车用太, 刘五洲, 王基华, 等. 张北-尚义地震典型地段的地表破坏. 地震地质, 1998, 20(2): 179～182
2 Zebker H A, Rosen P A, Goldstein R M, et al. On the derivation of coseismic displacement fields using differential radar interferometry: The Lander earthquakes. J Geophys Res, 1994, 99B(10): 19617～19634
3 Gabriel A K, Goldstein R M, Zebker H A. Mapping small elevation changes over large areas: Differential radar interferometry. J Geophys Res, 1989, 94B(7): 9183～9191
4 Massonnet D, Feigl K. Discrimination of geophysical phenomena in satellite radar interferometry. Geophys Res Lett, 1995, 22: 1537～1540
5 Feigl K, Sergent A, Jacq D. Estimation of an earthquake focal mechanism from a satellite radar interferogram: Application to the December 4, 1992 Landers aftershock. Geophys Res Lett, 1995, 22: 1037～1040
6 Carnec C, Massonnet D, King C. Two examples of the use of SAR interferometry on displacement fields of small spatial extent. Geophys Res Lett, 1996, 23: 3579～3582
7 Bear G, Sandwell D, Williams S, et al. Coseismic deformation associated with the November 1995, Mw = 7.1 Nuweiba earthquake, Gulf of Elat (Aqaba) detected by synthetic aperture radar interferometry. J Geophys Res, 1999, 104B(11): 25221～25232
8 张国民, 李 丽, 焦明若. 张北6.2级地震与强震成组活动. 地震, 1999, 19(2): 107～117
9 徐锡伟, 冉勇康, 周本刚, 等. 张北-尚义地震的地震构造环境与宏观破坏特征. 地震地质, 1998, 20(2): 135～145
10 车用太, 刘五洲, 王基华, 等. 张北-尚义地震典型地段的地表破坏. 地震地质, 1998, 20(2): 179～182
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