SEISMOLOGY AND GEOLOGY ›› 2006, Vol. 28 ›› Issue (3): 497-502.

• Brief Report • Previous Articles     Next Articles

THE M 5.1 WEN'AN EARTHQUAKE OF JULY 4,2006

DIAO Gui-ling, ZHANG Si-chang, SUN Pei-qing, ZHANG Yue-gang, GAO Jing-chun, MAO Guo-liang   

  1. Earthquake Administration of Hebei Province, Shijiazhuang 050021, China
  • Received:2006-07-16 Revised:2006-07-23 Online:2006-09-14 Published:2009-08-27

2006年7月4日文安5.1级地震

刁桂苓, 张四昌, 孙佩卿, 张跃刚, 高景春, 毛国良   

  1. 河北省地震局, 石家庄, 050021
  • 作者简介:刁桂苓,男,1951年出生,河北师范大学化学系毕业,研究员,主要从事地震学研究经及地震学和地震地质学学科交叉研究震源断层,E-mail:dgl@eq-he.ac.cn.
  • 基金资助:

    科技部国际合作项目(2005DFA20980)资助。

Abstract:

Through analysis, we found that the Wen'an earthquake has the following characteristics: the aftershocks are small with the biggest of only M 1.5, belonging to the isolated type earthquake; the earthquake intensity is low, but the perceptible area is relatively large; the macro-epicenter is over 10km away from the micro-epicenter; the hypocenter is deep; and the fracture of earthquake shows a normal fault slip. The explanation for these characteristics is presented, which can be regarded as a new evidence for lithospheric thinning.

Key words: Wen’an earthquake, isolated type earthquake, normal fault, lithospheric thinning

摘要:

分析了震动京津的文安地震的特点:余震微小,最大仅1.5级,属于孤立型地震;震区烈度偏低、有感范围大;宏观震中与微观震中相差10余公里;震源较深;具有较大的正断层错动分量。对此作出初步解释,并认为可能是岩石圈减薄的新证据。

关键词: 文安地震, 孤立型地震, 正断层, 岩石圈减薄

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