Three-dimensional nonplanar simulation of the 1992 Landers earthquake
Three-dimensional nonplanar simulation of the 1992 Landers earthquake
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DOI：
10.1029/2000jb000061
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发表时间：
2002-02-10
影响因子：
3.9
通讯作者：
Fukuyama, E
中科院分区：
文献类型：
--
作者：
Aochi, H;Fukuyama, E
[1]我们模拟了1992年兰德斯，加州，地震的破裂过程中使用一个现实的非平面断层几何形状，包括断层弯曲和分支，通过三维边界积分方程方法。考虑到由于局部构造以及非平面断层结构的外部加载系统，我们可以再现这次地震的特征，如断层之间的自发破裂转移，滑动分布模式，以及破裂前缘的传播，而无需假设任何横向非均匀分布的参数。我们也可以重现地震波形附近的故障，特别是在破裂传播的前进方向，断裂方向性控制的断裂之间的断裂转移显着影响地面运动。
[1] We have simulated the rupture process of the 1992 Landers, California, earthquake using a realistic nonplanar fault geometry, including fault bends and branches, through a three-dimensional boundary integral equation method. Considering an external loading system due to local tectonics as well as a nonplanar fault structure, we could reproduce the characteristic features of this earthquake such as spontaneous rupture transfer between faults, pattern of slip distribution, and propagation of rupture front without assuming any laterally heterogeneous distribution of parameters. We could also reproduce seismic waveforms near the faults, especially in the forward direction of rupture propagation, where rupture directivity controlled by rupture transfer between faults significantly affects ground motion.