Abstract:On the basis of system summarizing the evolution process of large-scale ordered images before earthquakes such as Wenchuan 8.0 and Yushu 7.1, the characteristics of large-scale ordered images of the Qinghai Tibet block and the relationship between earthquakes and seismic groups with a magnitude of 7 in the region since 1952 are systematically researched. The large-scale ordered image is a seismic activity image with dynamic significance, It is commonly present before the magnitude 7 earthquake or seismic group in the Qinghai Tibet block, has medium-term predictive significance for determining areas with earthquakes of magnitude 7 or seismic groups and the region with seismic activity of magnitude 5 or above. Further summarizing and refining the large-scale ordered image prediction method for strong earthquakes. The evolution process of large-scale ordered images of earthquakes of magnitude 5 and above in the Qinghai Tibet block before the Maduo 7.4 earthquake in 2021, test and validate the above conclusions and the effectiveness of the large-scale ordered image prediction method.
