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地震 ›› 2000, Vol. 20 ›› Issue (3): 43-47.

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华北地区强震前地震活动的异常增强

吕晓健, 刘蒲雄   

  1. 中国地震局分析预报中心,北京 100036
  • 收稿日期:1999-11-15 修回日期:1999-12-16 出版日期:2000-07-31 发布日期:2022-09-30
  • 作者简介:吕晓健(1970-),女,北京市人,助理研究员,主要从事地震活动性及地震预报研究。
  • 基金资助:
    中国地震局“九五”科研攻关项目(95-04-01-01-01)

Enhancement of seismicity before strong earthquake in North China

LU Xiao-jian, LIU Pu-xiong   

  1. Center for Analysis and Prediction, CSB, Beijing 100036, China
  • Received:1999-11-15 Revised:1999-12-16 Online:2000-07-31 Published:2022-09-30

摘要: 利用应变释放曲线的加速上升作为异常增强的标志和地震预报的中期指标,对华北地区做应变释放曲线的空间扫描,并对此方法的预报效能进行了全面系统的检验。结果表明,该方法有较好的预报效果,文中就其有关问题进行了讨论,并给出其预报规则。

关键词: 地震活动增强, 应变释放, 地震预报, 预报效能

Abstract: Acceleration pattern of strain release curves is a sign of the enhancement of seismicity and mid-term earthquake prediction.In order to examine the efficiency of earthquake prediction based on this method,we conduct the space scanning of strain release curves by using the data of small earthquakes during 1970~1996in North China. The result shows the method has better efficiency of prediction.Some problems regarding the mid-term prediction are also discussed.

Key words: Enhancement of seismicity, Strain release, Earthquake prediction, Efficiency of prediction

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