Figure S6. Distribution of seismic rays in the study region.(a) Ray paths from local events. Yellow stars: epicenters of
local events; red triangles: seismic stations. Ray color indicates the
penetration depth, whose scale is shown at the bottom. (b) Ray
paths from teleseismic events. Blue triangles: seismic stations. Note
that only the ray paths shallower than 750 km depth are shown.