The figure presents a schematic map highlighting a section of the high-speed railway. The route is drawn as a blue dashed line oriented diagonally across the map, with red triangular markers indicating the direction of train movement or seismic-wave propagation. Two parallel green lines flank the dashed route, defining the outer boundaries of the predefined warning region. Surrounding areas are lightly shaded, and several orange curved lines indicate nearby topographic or fault features.
Distribution of dedicated ground-motion monitoring stations. Source(s): Authorsā own work