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地震 ›› 2000, Vol. 20 ›› Issue (1): 53-58.

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张北6.2级地震近震区前兆异常特征及时空演化研究

张永仙, 刘桂萍   

  1. 中国地震局分析预报中心,北京 100036
  • 收稿日期:1999-03-26 修回日期:1999-06-29 出版日期:2000-01-31 发布日期:2022-09-26
  • 作者简介:张永仙(1965-),女,副研究员,1995年在读博士生。主要从事地震预报研究
  • 基金资助:
    国家科技攻关项目(96-913-04-03-02)

Study on eharacteristics of anomalies near by epicenter of Zhangbei MS6.2earthquake and their spatial and temporal evolution

ZHANG Yong-xian, LIU Gui-Ping   

  1. Center for Analysis and Predietion,CSB,Beijing 100036,China
  • Received:1999-03-26 Revised:1999-06-29 Online:2000-01-31 Published:2022-09-26

摘要: 1998年1月10日发生在张北的6.2级强震,是华北地区自1989年大同6.1级震群后的又一次较为显著地震。在汇总首都圈及其周围地区各种前兆异常的基础上,研究了近震区(200 km 范围内)前兆异常的空间、时间演化特征。结果表明,前兆异常的发展过程存在较明显的阶段性和成组性,反映了震前区域应力场的增强过程。还对这些前兆异常的机制进行了探讨。

关键词: 近震区, 异常特征, 时空演化, 异常机制

Abstract: Zhangbei Ms6.2 earthquake(41.1°N,114.3°E)on January 10,1998 was an-Other eminent event after Datong Ms6.1 shoek in 1989 in North China.The spatial andTemporal eharaeteristics of anomalies near by epieenter(△≤200km)show that anomalies oeeurred in groups and by stages,reflecting the strengthening process of field stress. Pri-mary diseussion on anomaly mechanism is also given in the paper.

Key words: Area nearby epieenter, Anomaly eharaeteristies, Spatial and temporalevolution, Anomaly meehanism.

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