Abstract:With data from the Ruichang-Yangxin magnitude 4.6 earthquake sequence recorded by the digital seismic network of Jiangxi and its adjacent areas, we relocate the sequence, study the relatively large earthquake’s focal mechanism, discuss the spatial distribution feature and seismogenic structure of the sequence and discuss the relationship between two moderate-strong earthquakes in this region. Our results show that the strike of the Ruichang-Yangxin magnitude 4.6 earthquake sequence is approximately NE 60°, that the main seismogenic structure is the Longtang-Pijiashan buried fault, which is a subfault of the Tanlu fault. Furthermore, the Jiujiang magnitude 5.7 earthquake sequence and the Ruichang-Yangxin magnitude 4.6 earthquake sequence have a close relationship in spatio-temporal distribution.
DONG Feifei,DENG Hui,HU Rui et al. Study on Source Location and Focal Mechanism of Ruichang-Yangxin Magnitude 4.6 Earthquake Sequence[J]. jgg, 2016, 36(12): 1047-1051.