山西地震带现今活动的危险性

• 作 者: 吴开统
• 机 构: 国家地震局分析预报中心
• 出 处: 山西地震
• 发表日期: 1985年03期
• 关键词: 大震 晚期强余震 前兆异常 活动状态 中小地震 强震活动 发生时段 震源区 应力场 地震频度

本文据华北大震的逆时针方向迁移、强震的重复性、山西大震的发生时段、重复同期及现今状态的分析,指出山西地震带发达大震危险性的依据是:华北晚期强余震比较活跃、华北的应力场水平较高、山西带近年中小地震不断等.还指出从华北及山西带现今地震活动状态的分析,也显示出有发生强震的条件和背景,虽然目前尚未发现有立即发震的前兆异常,但从现在开始的本世纪内尤应注意这种危险性的存在.

Based on the counterclockwise migration of strong earthquakes in North China, the repeatability of strong earthquakes, the occurrence periods of heavy earthquakes in Shanxi, the analysis of the same period and the current state, the paper points out that the danger of the developed earthquakes in Shanxi earthquake zone is based on the comparison of the strong aftershocks of late North China Active, the stress field in North China is relatively high, and the earthquakes in Shanxi and other regions are constantly increasing in recent years.It also points out that the present state of seismic activity in North China and Shanxi Province also shows the conditions and background of strong earthquakes. Although there is no immediate The precursory anomaly of the seismogenic anomaly, but from now on century this century should pay particular attention to the existence of this danger.