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。
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 lOkm 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.
出处
《地震地质》
EI
CSCD
北大核心
2006年第3期497-502,共6页
Seismology and Geology
基金
科技部国际合作项目(2005DFA20980)资助。
关键词
文安地震
孤立型地震
正断层
岩石圈减薄
Wen＇an earthquake, isolated type earthquake, normal fault, lithospheric thinning
