Phivolcs monitoring quakes in West PH Sea

Posted at 02/02/14 11:40 AM

MANILA, Philippines – The Philippine Institute of Volcanology and Seismology (Phivolcs) is monitoring and studying the consecutive earthquakes recorded in the West Philippine Sea, northwest of Bolinao, Pangasinan.

According to Phivolcs science research specialist Mylene Enriquez, they are trying to determine what caused the consecutive, if mild, shocks in the West Philippine Sea as well as to find out if an “earthquake swarm” is occurring in the area.

The first tremor was recorded at 1:40 p.m. Saturday, with the epicenter of the magnitude 3.9-quake located 96 kilometers northwest of Bolinao in Pangasinan.

More tremors followed, the strongest of which was a magnitude 3.8 quake, until 5:21 a.m. Sunday.

Enriquez said the earthquakes had a depth of focus that ranged from one kilometer to 21 kilometers.

The epicenters of the quakes were located near the Manila trench, but Philvolcs is checking if there is another fault system in the area that may be the cause of the consecutive tremors.

Enriquez warns that more earthquakes may occur in the area. -- Report from Dexter Ganibe, DZMM