地震地质 ›› 1991, Vol. 13 ›› Issue (2): 173-178.

• 科研简报 • 上一篇    下一篇

相继发生的三个强震的分布关系

邓志辉, 马瑾   

  1. 国家地震局地质研究所, 北京 100029
  • 收稿日期:1989-10-31 出版日期:1991-06-05 发布日期:2009-11-25
  • 基金资助:
    地质科学联合基金,89-058。

THE SPACIAL RELATIONSHIPS OF THREE STRONG SEQUENTIALLY OCCURRING EARTHQUAKES

Deng Zhi-hui, Ma Jin   

  1. Institute of Geology, State Seismological Bureau, Beijing 100029
  • Received:1989-10-31 Online:1991-06-05 Published:2009-11-25

摘要: 本文从动态的观点出发,把时间上相继发生的三个7级以上强震(设它们分别为A、B和C事件)在空间上的分布关系作为主要研究内容。研究结果表明:(1)ABC所在平面的优势分布是切过软流圈的顶部或岩石圈的下部;(2)在地震A和B发生之后,地震C的优势分布是位于A,B连线的延伸部分和A,B之间稍近A的部位。根据A,B,C的分布关系,结合各地区的地质条件和历史地震资料等,我们可以从已知的两个7级以上强震预测第三个7级以上强震在各地区的发震概率大小。

关键词: 地震, H值, K

Abstract: The spacial relationships of strong earthquakes have been investigated for two catalogues: Chinese historical earthquake catalogue(M≥7) and worldwide earthquake cat-alogue(M≥7) from 1900 to 1980. Three strong earthquakes taking place one after another are labeled as A,B and C. The spacial relationship between A,B and C are revealed through systematical statisical analyses. (1) The preferential distribution of ABC planes is to intersect the upper part of the asthenosphere or the lower part of the lithosphere. (2) After earthquakes A and B,both extending regions from A to B or from B to A,and the place between A and B ((ΔCA-ΔCB)/ΔAB≈-0.2),are more risk regions then the other regions. Based on these spacial relationships,strong earthquakes can be predicted in probability. The 56 groups of Chinese historical strong earthquakes (M≥7) have been calculated. Most of earthquakes (C) in each group took place in the high probability regions.

Key words: Earthquakes, H-value, K-value