Sulu Trench

The trench is located southwest of the Visayas and north of the Sulu Archipelago.

Although there are vast areas of subduction zones, some authors have considered this region to have low seismic activity.

There have been several earthquakes with a magnitude ≥6.4 in the region, with one of the recent ones in 1978,[4] hitting the trench with a hypocenter depth of 24 km (15 mi).

Areas adjacent to the subduction zones have experienced large seismic activity.

[5] This is a list of significant earthquakes related to the Sulu Trench which have a magnitude of 6.4 or bigger.