Figure 1. (a) Recent seismicity recorded in South Korea and the location of the seismic profile (P3, acquired in July 2021) in relation to the previous ones (P1 and P2) acquired in November 2020 (Malehmir et al., 2022). Profile P3 crosses the three major fault systems with the aim to reconstruct their geometries at depth. The locations of the fault systems are approximate and based on extrapolation from rivers and valleys. (b) Major plate boundaries surrounding the study area.