フィリピン海プレート
The released seismic moment of the earthquake was 1.3×1019 Nm. This earthquake is a normal faulting intraslab event within the subducting Philippine Sea Plate. The slip of the earthquake was estimated to be about . The locations of aftershocks were distributed roughly in N-S direction. It has been suggested that this earthquake was related to the dehydration of the Philippine Sea Plate slab.