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首页> 外文期刊>International Journal of Geosciences >Study on Simulation of Foreshock Activity Properties before Strong Earthquake Using Heterogeneous Cellular Automata Models
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Study on Simulation of Foreshock Activity Properties before Strong Earthquake Using Heterogeneous Cellular Automata Models

机译：基于非均质细胞自动机模型的强震前震活动特性模拟研究

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摘要

Three different degrees of heterogeneous fault models are simulated by using 2-D random dynamic cellular automata models for analyzing macroscopic behaviors of seismic activity evolution influenced by heterogeneity of fault structures. The results show that the heterogeneities of fault structures can influence evolution properties of the foreshock activity and rupture process, such as the mediate heterogeneous and less heterogeneous structures, which show relatively higher ASR rates and more significant seismic gaps before main shocks. Besides, stress drop distribution ranges of the foreshock events when approaching a main shock show more homogenous (narrower) than that of the foreshock events far from a main shock. So the heterogeneity of fault structures plays an important role in strong earthquake preparation processes.
机译：通过使用二维随机动态元胞自动机模型来模拟三种不同程度的非均质断层模型，以分析受断层结构非均质性影响的地震活动演化的宏观行为。结果表明，断层结构的非均质性会影响前震活动和破裂过程的演化特性，例如中度的异质性和较少的非均质性结构，它们显示出相对较高的ASR率和在主震发生前的较大的地震缝隙。此外，前震事件在接近主震时的应力降分布范围比远震事件的应力降分布范围更均匀（更窄），而远非主震。因此，断层结构的非均质性在强震准备过程中起着重要作用。

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