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研究了2008年汶川地震期间一条复杂断层系的运动学破裂。我们假定为Hao等(2009)使用干涉合成孔径雷达(InSAR)数据计算的滑动分布,尝试拟合两个近断层台站记录的地震图,其中一个台站位于两个近平行倾斜断层之间。正演数值模拟结果显示,2008年汶川地震期间,两个近平行倾斜的断层同震地产生了破裂。这一结果为逆断层地震的动态断层相互作用提供了约束,与自由表面不影响破裂分支的分支走滑断层不同。
A kinematic fracture of a complex fault system during the Wenchuan earthquake in 2008 was studied. We assume the slip distribution calculated using interferometric synthetic aperture radar (InSAR) data by Hao et al. (2009) and attempt to fit seismograms recorded by two near-fault stations, one of which is located between two near-parallel tilted faults. The numerical simulation results show that during the Wenchuan earthquake in 2008, two nearly parallel fault faults collapsed coseismicly. This result provides a constraint for the dynamic fault interaction of the reverse-fault earthquakes, unlike the branch-slip fault whose free surface does not affect the fractured branch.