利用三维细胞自动机模拟地震活动性

英文篇名：Modeling Seismicity by 3-D Cellular Automata
中文刊名：北京大学学报(自然科学版)
英文刊名：Acta Scientiarum Naturalium Universitatis Pekinensis
作者：朱守彪 ; 蔡永恩 ; 刘杰 ; 石耀霖
英文作者：ZHU Shoubiao 2) ; 3) CAI Yongen 3) LIU Jie 4) SHI Yaolin 5) ( 2) The Institute of Crustal Dynamics ; Beijing ; 100085 ; 3) Department of Geophysics ; Peking University ; Beijing ; 100871 ; 4) Institute of Earthquake Prediction ; China Earthquake Administration ; Beijing ; 100036 ; 5) Key lab of Calculation Geodynamics ; Graduate School of Chinese Academy of Science ; Beijing ; 100039)
中文关键词：三维细胞自动机 ; 地震活动性 ; G-R关系 ; 分形分布
英文关键词：3D cellular automata ; Seismicity ; G-R relation ; Self-similar
出版日期：2006-03-20
机构：中国地震局地壳应力研究所,北京大学地球与空间科学学院地球物理学系北京,100871,北京大学地球与空间科学学院地球物理学系,中国地震局地震预测研究所,中国科学院研究生院地球动力学重点实验室,,北京,100085,北京,100871,北京,100036,北京,100039
年：2006
期：02
出版单位：北京大学学报(自然科学版)

摘要

在由弹簧—滑块—阻尼器组成的平面网络非线性动力学模型研究的基础之上,对细胞自动机模型的演化规则进行了修改,并将其由二维拓广到三维。设计了100×100×40网格的三维大型地震细胞自动机模型,生成了13540个“地震”事件。结果表明,三维空间“地震”事件的时空分布与天然地震有许多类似的特征,满足震级与频度的G-R关系,且有分形分布规律。由此可见,三维地震细胞自动机比二维模型更符合实际。
Based on the research results of the non-linear dynamic model which consists of a plane network system built by spring-slider-damper, cellular automata model is developed from 2D to 3D, with the evolution rule modified. The authors design 100×100×40 grids for 3D cellular automata model, and produce 13?540 synthetic seismic events. The computation results show that the tempo-spatial distribution of 3D synthetic events is consistent with that of actual natural earthquakes, and frequency-magnitude of synthetic seismic events meets G-R relation. Moreover, the synthetic events by cellular automata have fractal distribution on tempo-spatial scale. Compared with 2-D model, 3D cellular automata is more reasonable.

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