Seismogenic Structure and Geological Disaster Characteristics of Jiujiang-ruichang 5.7 Earthquake

Based on a large number of on-site first-hand data of Jiujiang-ruichang magnitude 5.7 earthquake, investigation, analysis and research work are carried out in many aspects, such as earthquake line of intensity, seismic structure investigation and analysis, seismic geological disaster characteristics and so on. Firstly, a possible seismogenic structure is obtained through geological analysis, such as fault activity and the relationship between earthquake magnitude and seismic structure length, and then another seismogenic structure is determined through the analysis of the distribution characteristics of seismic lines and various seismic geological disasters according to the dominant distribution of long axis and seismic geological hazards in meizoseismal area, finally the two possible seismogenic structures are comprehensive analyzed. The high consistency of the two results indicated that the Ruichang-wuning fault may be the seismogenic structure of Jiujiang-ruichang 5.7 earthquake.