Subparallel Dipping Faults that Ruptured during the 2008 Wenchuan Earthquake
Subparallel Dipping Faults that Ruptured during the 2008 Wenchuan Earthquake
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DOI：
10.1785/0120120231
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发表时间：
2013-06
影响因子：
3
通讯作者：
E. Fukuyama;K. X. Hao
中科院分区：
文献类型：
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作者：
E. Fukuyama;K. X. Hao
摘要对2008年汶川地震中沿着复杂断裂系统的运动学破裂进行了研究。假设Hao等人（2009）使用干涉合成孔径雷达（干涉合成孔径雷达）数据估计的滑动分布，我们尝试拟合两个近断层台站的地震图，其中一个位于两个近平行倾斜断层之间。正演数值模拟结果表明，2008年汶川地震期间，两条近平行倾斜断层发生同震破裂。这一结果为逆断层地震的断层动力相互作用提供了一个约束，这与自由面不影响破裂分支的分支走滑断层不同。
Abstract We investigated the kinematic rupture along a complicated fault system during the 2008 Wenchuan earthquake. Assuming a slip distribution estimated using Interferometric Synthetic Aperture Radar (InSAR) data by Hao et al. (2009), we tried to fit two near‐fault station seismograms, one of which was located between two subparallel dipping faults. Forward numerical simulation results suggest that two subparallel dipping faults ruptured coseismically during the 2008 Wenchuan earthquake. This result provides a constraint on the dynamic fault interaction of reverse‐fault earthquake, which is different from the branched strike‐slip faults where the free surface does not affect the rupture branching.