地震复杂性成因的数值模拟

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英文篇名：SEISMOGENESIS COMPLEX NUMERICAL SIMULATION 中文刊名：地震学刊 英文刊名：JOURNAL OF SEISMOLOGY 作者：郑兆苾 ; 张军 英文作者：ZHENG Zhao bi ZHANG Jun (Seismological Bureau of Anhui Province ; Hefei 230031) 中文关键词：地震模拟 ; 细胞自动机 ; 非线性动力学 ; 不均匀性 英文关键词：seismic simulation cell automata nonlinear dynamic heterogeneity 出版日期：1999-12-30 机构：安徽省地震局!安徽合肥230031,安徽省地震局!安徽合肥230031 年：1999 期：04 出版单位：地震学刊

摘要

以最简单的弹簧滑块模型为理论基础,由完全确定性的动力学公式出发,采用细胞自动机技术,研究模拟地震序列时、空、强复杂性的成因。当模型中仅有非线性动力学因素时,模拟序列的时空强特征十分复杂,当引入弹性结构的不均匀性,模拟大事件的空间和强度特征明显受控于断层的不均匀性。由模拟结果推测认为地震的复杂性是由于地球的不均匀性和断层破裂的非线性动力学相互作用而引起的。
Based on the simplest spring slide mass model as theory fundament, the complex genesis of time, space and strength of seismic sequence is simulated and studied from complete determinate dynamic formulae using a cell automata technique. When there is only nonlinear dynarnic factor, the time, space and strength characteristics of simulated sequence is very complex. When the heterogeneity of elastic structure is introduced, the space and strength characteristics of large event simulated are obviously controlled by fault heterogeneity. It is concluded that seismic complex is caused by the interaction of crust heterogeneity and the nonlinear dynamic of fault rupture.

引文

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