Seismic Imaging and Seismicity Analysis in Beijing-Tianjin-Tangshan Region

Figure 8

Earthquake hypocenters relocated in this study. (a) shows distribution of relocated earthquake epicenters (circles); squares show the major cities. Thick lines denote active faults; (b) and (c) show the cross-sectional view of focal depth along latitude and longitude profiles, respectively; (d) denotes histogram of P wave absolute travel-time residuals after relocation using tomoDD method.