outbrain
Close  

Negros trench under monitoring after 5 earthquakes

By: - Correspondent / @carlagomezINQ
/ 11:17 PM July 11, 2011

BACOLOD CITY, Philippines—The Philippine Institute of Volcanology and Seismology (Phivolcs) has been closely monitoring the Negros trench following five earthquakes, the strongest one at a 5.2-magnitude, that hit Negros Occidental.

Ishmael Narag, Phivolcs Seismology Division officer-in-charge, said Monday afternoon that the 24-hour watch started when the last tremor hit at 10:10 a.m.

ADVERTISEMENT

The epicenter of the earthquakes was offshore and believed to have been caused by sudden movements along the earthquake-generating Negros Trench, Narag said.

“We believe a subduction occurred where heavier denser plates dove into the interior of the earth, triggering five earthquakes recorded in Cauayan town and Bago City in Negros Occidental,” Narag said.

FEATURED STORIES

A subduction occurs when two oceanic plates collide, with the younger plate riding over the older one, according to Plate Tectonics website http://www.platetectonics.com/book/page_12.asp.

Narag explained that as a precaution, they were monitoring the Negros Trench although the magnitude of the tremors that occurred later Monday had gone down.

“These are small magnitude events that did not lead to any damage. But we are not discounting the possibility of having stronger earthquakes,” Phivolcs Director Renato Solidum also said.

The first quake was recorded at 12:24 a.m., with a magnitude of 3.6 in Bago City, followed by four others that hit Cauayan at 5.2-magnitude at 12:43 a.m., 4.8-magnitude at 1:40 a.m., 2.8-magnitude at 5:40 a.m. and 3.5-magnitude at 10:10 a.m., Phivolcs reported.

Cauayan Mayor John Rey Tabujara said they felt the earthquakes shake their town one after the other but these did not cause any damage nor was anybody harmed.

ADVERTISEMENT
Read Next
EDITORS' PICK
MOST READ
Don't miss out on the latest news and information.
View comments

Subscribe to INQUIRER PLUS to get access to The Philippine Daily Inquirer & other 70+ titles, share up to 5 gadgets, listen to the news, download as early as 4am & share articles on social media. Call 896 6000.

TAGS: Earthquakes, Negros Occidental, Negros trench, Philippine Institute of Volcanology and Seismology, Philippines - Regions
For feedback, complaints, or inquiries, contact us.


© Copyright 1997-2020 INQUIRER.net | All Rights Reserved

We use cookies to ensure you get the best experience on our website. By continuing, you are agreeing to our use of cookies. To find out more, please click this link.