Seismic Imaging and Seismicity Analysis in Beijing-Tianjin-Tangshan Region
Figure 10
(a) and (b) show the vertical cross-sections of P wave tomographic image along the profiles. White stars and circles denote the earthquakes of ≥ 4.0 and < 4.0, respectively, which occurred within 0.25° off the profile. Red and blue colors denote slow- and fast-velocity anomalies, respectively. No vertical exaggeration. (c) shows the location of profiles. BJ: Beijing; TJ: Tianjin; TS: Tangshan; ZJK: Zhangjiakou; SJZ: Shijiazhuang.
