摘要
通过对中国大陆7级以上强震的研究发现,地震活动呈现为时间上轮回和空间上迁移的动态图像。为探索这种图像的物理本质,本文应用非线性动力学模型来模拟在统一构造应力场作用下含有多个活动地震带的地震构造块体的地震活动。文中用若干列并联排列的基本元件(由Maxwell体和刚性滑块组成)来模拟地震活动带,并用耦合元件来模拟地震活动带之间和带内各段之间的相互耦合作用。本文的研究结果有助于理解强震的轮回活动以及高潮中成组强震间的相互影响特征。
Based on the study of activities of earthquakes with M≥7 in China mainland,it is found that a dynamic pattern is shown,i. e. ,the cyclic characteristics in time and migration from one seismic zone to another in space. In order to understanding the physical mechanism of this pattern, we use nonlinear dynamic models to simulate the seismic activities in fault zones under a unified tectonic stress field. The basic element in our model consists of a Maxwell body and a rigid sliding block. Basic elements in a column represent a fault,and coupling elements connecting different columns simulate the interaction a-mong faults and fault segments. The results provide insights to the cyclic activity of strong earthquakes and to the feature of the mutual influence between the strong earthquakes in groups in the climax of seismic activities.
出处
《中国地震》
CSCD
北大核心
1993年第1期20-32,共13页
Earthquake Research in China
基金
地震学联合基金会
关键词
地震活动性
强震
力学模型
计算机
Cycle Computer model Seismically active belt Nonlinear dynamics Stress adjustment
