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2006年7月4日文安5.1级地震
THE M 5.1 WEN’AN EARTHQUAKE OF JULY 4,2006
【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。
【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.
【关键词】 文安地震;
孤立型地震;
正断层;
岩石圈减薄;
【Key words】 Wen’an earthquake; isolated type earthquake; normal fault; lithospheric thinning;
【Key words】 Wen’an earthquake; isolated type earthquake; normal fault; lithospheric thinning;
【基金】 科技部国际合作项目(2005DFA20980)资助。
- 【文献出处】 地震地质 ,Seismology and Geology , 编辑部邮箱 ,2006年03期
- 【分类号】P315
- 【被引频次】30
- 【下载频次】99