CAJ | 학술논문

巴东Ms5.1地震是三峡水库蓄水后发生的最大震级的地震,本文从多角度对此次地震的成因机制进行了探讨。使用VELEST程序对巴东Ms5.1地震序列进行了重新定位,结果显示,地震序列呈近EW向分布。根据小震丛集性原则,使用305次余震的精确定位结果对地震发震断层面参数进行反演,得到巴东Ms5.1地震断层面的走向、倾向和倾角分别为265.5°,85°和－120.7°,并对其构造环境进行了分析。
파동Ms5.1지진시삼협수고축수후발생적최대진급적지진,본문종다각도대차차지진적성인궤제진행료탐토。사용VELEST정서대파동Ms5.1지진서렬진행료중신정위,결과현시,지진서렬정근EW향분포。근거소진총집성원칙,사용305차여진적정학정위결과대지진발진단층면삼수진행반연,득도파동Ms5.1지진단층면적주향、경향화경각분별위265.5°,85°화－120.7°,병대기구조배경진행료분석。
On December 16, 2013, a magnitude 5. 1 earthquake, the largest earthquake recorded since impoundment, occurred in Badong County. For a better understanding of the seismic activities in this area, we analyzed the seismogenic structure combining with focal mechanism solution, relocation of the aftershock sequence and the geologic settings in the region. Precise earthquake relocation shows that the earthquake sequence is distributed along NEE direction. According to the principle of small earthquakes cluster, we inversed the parameters of fault plane to obtain the strike, dip and rake angles of fault plane which are 265. 5°, 85° and - 120. 7° respectively. Then we analyzed the tectonic environment of Badong MS5. 1 earthquake.