3D Upper Crustal Shear-Wave Velocity Model of Eastern Taiwan from Ambient Noise Tomography with Dense Seismic Arrays

This study aims to develop a high-resolution 3D shear-wave velocity model of the upper crust in eastern Taiwan, a region marked by arc-continent collision between the Eurasian Plate and the Philippine Sea Plate. To capture the area's complex tectonic structures, we deployed 411 seismometers across five dense seismic arrays along the Longitudinal Valley and Coastal Range. Using ambient noise tomography, we obtained reliable Rayleigh wave phase velocities ranging from 0.6 to 14 seconds, enabling us to resolve the Vs structure from the surface to a depth of approximately 6 km. The phase velocity dispersion and 3D shear-wave velocity model obtained in this study are listed here. phase velocity dispersion 3D shear-wave velocity model