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地震 ›› 2010, Vol. 30 ›› Issue (4): 13-21.

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东亚大陆大三角地震区的强震成组活动迁移图像分析

傅征祥, 吕晓健, 郝平, 陈丹   

  1. 中国地震局地震预测研究所, 北京 100036
  • 收稿日期:2010-04-26 修回日期:2010-07-20 出版日期:2010-10-31 发布日期:2021-10-19
  • 作者简介:傅征祥(1941-), 男, 上海市人, 研究员, 主要从事地震活动性和地震预测等研究。
  • 基金资助:
    国家重点基础研究发展计划项目(2008CB425703; 2008CB425705)联合资助

Analysis on the Migration Patterns of Grouping Earthquakes in the Great Seismic Triangle Area of Eastern Asia Continent

FU Zheng-xiang, LU Xiao-jian, HAO Ping, CHEN Dan   

  1. Institute of Earthquake Science, CEA, Beijing 100036,China
  • Received:2010-04-26 Revised:2010-07-20 Online:2010-10-31 Published:2021-10-19

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摘要： 本文分析了1900—2008年东亚大陆大三角地震区7.5级以上大地震的地震活动时空图像, 认为: ① 1902—1974年东亚大陆大三角地震区的7.5级以上浅源地震成组活动的主体地区, 沿着大三角地震区的边界顺时针迁移, 到了1997—2001年开始转移到大三角地震区的内部; ② 对于整个大三角地震区而言, 近代7.5级以上浅源地震的震级(M)-时间(t)过程表明, 地震活动是活跃和平静交替出现的幕式过程; ③ 大三角地震区近代7.5级以上浅源地震的时空迁移图像的力学机制, 可能是地震区内地震断层应力转移和耦合的相互作用。

关键词: 东亚大陆大三角地震区, 成组地震活动主体地区迁移, 幕式地震活动

Abstract: This paper analyses the time-space seismicity pattern (MS≥7.5) in the great seismic triangle area of eastern Asia continent from 1902 to 2008. The results show that: ① during a period from 1902 to 1974, the main areas of earthquake grouping migration was along the boundary of the great seismic triangle area in a clock-wise direction, and after that time, earthquake activity entered inside the great seismic triangle area; ② for the whole seismic triangle area, earthquake process with time indicates an episodic characteristics of alternative activity and quiescence; ③ the migration pattern of grouping seismic activity in the seismic triangle area might be related to a mechanic mechanism, with mutual effects among seismic faults, stress transfer and coupling.

Key words: Great seismic triangle area of Eastern Asia Continent, Migration pattern of grouping seismic area, Episodic seismic activity

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