【摘要】 利用FOCMEC方法反演了2011年9月10日江西瑞昌与湖北阳新交界MS4.6地震的震源机制解。反演结果为:节面I的走向304°,倾角76°,滑动角4°;节面Ⅱ的走向213°,倾角86°,滑动角165°;P轴的方位角、倾角分别为260°、7°;T轴的方位角、倾角分别为168°、13°;B轴的方位角、倾角分别为19°、75°。其中节面Ⅱ的走向和活动性质与震中附近的郯庐断裂带的分支断裂——池河—西山驿断裂较为接近。分析认为NNE向的池河—西山驿断裂可能是瑞昌—阳新MS4.6地震的发震构造。更多还原

【Abstract】 The focal mechanism of 2011 MS4.6 earthquake in the border region of Jiangxi Ruichang and Hubei Yangxin has been inversed by using FOCMEC method.The result is as follows:the strike,dip and rake angles of nodal plane I are 304°,76° and 4°.And those of nodal planeⅡ are 213°,86°and 165°.The azimuth and dip angle are 260°and 7° for P axis,168° and 13° for T axis,19° and 75° for B axis.The strike angle and activity characteristic are in accord with the branch fault of Tan-Lu fault zone,Chihe-Xishan Yi fault,which is near the epicenter.So it is analyzed that NNE trend Chihe-Xishan Yi fault may be the causative fault of Ruichang-Yangxin MS4.6 earthquake.更多还原