Abstract：Based on Okada’s elastic half-space model, the changes of Coulomb stress after the main shock are calculated and the influences of stress disturbance on the subsequent earthquakes are analyzed. The results show that: (1) Three earthquakes in the study area triggered the subsequent aftershocks which are located in areas with ΔCFS＞0. (2) The seismicity of regional background of Lintan-Tanchang is stronger than that of other areas, especially Tanchang and the adjacent areas, and the distribution of earthquakes is perpendicular to the strike of Lintan-Tanchang fault. The value of seismicity in the study area is reduced from central Tanchang to both edges gradually. (3) The seismicity in Tanchang would be higher than the seismicity of local background in the future, which needs our close attention. The seismicity of other regions in this study area are under that of the background, so the possibility of the occurrence of strong earthquakes would be smaller in the future.
LIU Fangbin,QU Junhao. Research on Static Coulomb Stress Changes and Seismicity in Lintan-Tanchang Fault and the Adjacent Area[J]. jgg, 2018, 38(9): 886-890.
