【摘要】 采用Snoke方法对2018-07-02江西浮梁M_L4.1地震的震源机制进行求解。结果显示，浮梁M_L4.1地震的最佳震源机制解为：节面Ⅰ走向140°、倾角87°、滑动角4°,节面Ⅱ走向50°、倾角86°、滑动角177°,P轴方位为275°,为走滑型破裂方式。节面Ⅱ结果与CAP方法计算结果比较一致，并且P轴方位均与区域应力场相一致。露头地质剖面特征显示，NE向宜丰-景德镇断裂为早中更新世断裂，具备中强地震发震能力，断裂产状与节面Ⅱ走向和倾角相一致。综合分析认为，宜丰-景德镇断裂为此次地震的发震构造。更多还原

【Abstract】 Using the Snoke approach, we solve the focal mechanism of the July 2, 2018 Fuliang M_L4.1 earthquake in Jiangxi province. The results show the best focal mechanism is: nodal plane I, strike is 140°, dip angle is 87°, slip angle is 4°; nodal plane Ⅱ, strike is 50°, dip angle is 86°, slip angle is 177°. The P axis azimuth is 275°, and it is strike-slip fracture mode. The results of nodal plane Ⅱ are in good agreement with those calculated by CAP method, and the P axis azimuth is consistent with the regional stress field. Outcrop geological profile features show that the NE-trending Yifeng-Jingdezhen fault is an early-middle Pleistocene fault with moderate and strong earthquake generating ability. The attitude of the fault is consistent with the strike and dip angle of nodal plane Ⅱ. We conclude that the Yifeng-Jingdezhen fault is the seismogenic structure of the earthquake.更多还原