平行走滑断层相互作用的粘弹模型和减震作用①

地震 ›› 1999, Vol. 19 ›› Issue (2): 127-134.

平行走滑断层相互作用的粘弹模型和减震作用^①

傅征祥, 刘桂萍

中国北京 100036 中国地震局分析预报中心

收稿日期:1998-04-09 修回日期:1998-07-24 出版日期:1999-04-30 发布日期:2022-09-19
作者简介:傅征祥,男, 1941年 1月出生, 研究员, 1997年博士生导师,主要从事地震活动性及其力学机制、地震预测研究工作。
基金资助:
^①中国地震局“九五”科研攻关项目(95-04-07-02-02)、 (95-04-03-03-03)

VISCO-ELASTIC MODEL OF INTERACTION BETWEEN PARALLEL STRIKE-SLIP FAULTS AND SEISMICITY REDUCTION EFFECT

Fu Zhengxiang, Liu Guiping

Center for Analysis and Prediction, C SB, Beijing 100036, China

Received:1998-04-09 Revised:1998-07-24 Online:1999-04-30 Published:2022-09-19

摘要/Abstract

摘要： 研究了二维粘弹性介质中平行走滑断层的相互力学作用及其对地震活动性的影响。当一条断层发生滑动,将导致平行断层面上剪切应力减小,因此,可能推迟平行断层发生滑动 (减震作用 ),推迟时间在几年至几百年的范围内,这取决于发生滑动的断层与平行断层之间的距离,以及平行断层自身应力积累孕育地震过程经历的时间。

关键词: 粘弹介质, 断层相互作用, 发震推迟时间, 危险性估

Abstract: The interaction between parallel strike-slip faults and its effect on seismicity in visco-elastic model is investigated. The slipping along a strike-slip fault would lead to shear stress reduction on parallel fault planes, and delay the slip occurrence along the parallel faults (i. e. seismicity reductio n effect). The delay time would range from several years to several hundreds years, which depends on the distance between the slipping fault and parallel faults, and the elapse time of stress accumulatio n process on parallel faults.

Key words: Viscosity medium, Fault interaction, Delay time of earthquake ccurrence, Seismic hazard estimation

傅征祥, 刘桂萍. 平行走滑断层相互作用的粘弹模型和减震作用^①[J]. 地震, 1999, 19(2): 127-134.

Fu Zhengxiang, Liu Guiping. VISCO-ELASTIC MODEL OF INTERACTION BETWEEN PARALLEL STRIKE-SLIP FAULTS AND SEISMICITY REDUCTION EFFECT[J]. EARTHQUAKE, 1999, 19(2): 127-134.

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