Cotabato Trench

[1] At its northern end the rate of convergence across this boundary is about 100 mm per year.

[2] It is a relatively young structure, forming during the late Miocene to Pliocene.

[5][2] The Cotabato Trench is one of the main structure around the Philippines likely to be associated with tsunamigenic earthquakes.

The tsunami generated by the 1976 earthquake caused about 4,000 deaths on Mindanao.

Modelling of likely further tsunamis along the Cotabato Trench suggests that run-ups of several metres are likely for future earthquakes similar in size to the 1976 event.