Structure of the tsunamigenic plate boundary and low-frequency earthquakes in the southern Ryukyu Trench

Abstract

Weakly coupled subduction zones may generate earthquakes that lead to tsunamis, but their structure and seismicity are poorly constrained with the Ryukyu subduction zone as one such example. Here, Arai et al. present seismological evidence from Ryukyu showing megathrust faults and low frequency earthquakes.