Tectonic mechanism of the Suining (Ms5.0) earthquake, center of Sichuan Basin, China

The Origin of Seismic and Tectonic Activity Underlying the Sichuan Basin, Central China

“…The average differences in orientation between two double‐couples seismic source mechanisms were indicated by the Kagan angle (Kagan, 1991) and are shown in Table S1 in Supporting Information S1. Additionally, we compared our results with those of small earthquakes from local seismic networks, such as the 2010 Suining Ms 5.0 earthquake (Zhou et al., 2013), the 2010 Rongchang Ms 4.8 earthquake (Meng et al., 2014), the 2016 Rongchang Ms 4.9 (Feng et al., 2019), the 2014 Rongchang ML 3.8 earthquakes (X. L. Wang et al., 2015), and the 2013 Santai M 4.7 earthquake (Y. Liu et al., 2021), which are presented in Table S2 in Supporting Information S1.…”

Differences of Structure in Mid‐Lower Crust between the Eastern and Western Blocks of the Sichuan basin

“…With the discovering of several oil fields, the work was shifted to the southern SCB, the southwestern SCB and the eastern SCB (Yan et al, 2003(Yan et al, , 2009Liu et al, 2012). What is more, the recent occurrence of the natural earthquakes in the Longmen Shan region also prompt the geologists to use the seismic reflection profiling to detect the deep crustal structure and study the earthquake mechanism ( Wang et al, 2013b;Yan et al, 2009;Yan et al, 2003;Zhou et al, 2013).…”

“…Based on the previous sedimentary thickness contour map (Luo, 1998;Zhang et al, 2012), additional data were provided: the resampled thickness from the new industry seismic profiles and the deep seismic reflection profiles (Burchfiel et al, 1995;Hubbard et al, 2009;Hubbard et al, 2010;Jia et al, 2010;Li et al, 2013;Liu et al, 2012;Lu et al, 2012;Plesch et al, 2007;Wang et al, 2013b;Yan et al, 2009;Yan et al, 2003;Zhou et al, 2013). The thickness was translated from two-way time in accordance with different crustal velocity in different regions, and then we used the Kriging method to interpolate the thickness to form the thickness grid, and then create the sedimentary thickness map with higher resolution contour line.…”