4 sinkholes found in Samar after quake-A A +A
Wednesday, September 5, 2012
TACLOBAN -- Four large sinkholes were discovered in Barangay Omawas, Maydolong, Eastern Samar Wednesday after a 7.6 magnitude earthquake hit the province last Friday.
Barangay officials were alarmed by the existence of the sinkholes as they pose threat to the residents nearby.
Omawas barangay chairman Hipolito Baguilod in a television interview said the sinkholes measures about five meters in diameter and four meters in depth.
The US Geogolical Survey defined sinkhole as an area of ground that has no natural external surface drainage--when it rains, all of the water stays inside the sinkhole and typically drains into the subsurface. Sinkholes can vary from a few feet to hundreds of acres and from less than 1 to more than 100 feet deep.
A magnitude 7.6 earthquake shook some parts of the Visayas, particularly Eastern Samar, at 8:47 p.m. Friday.
The Philippine Institute of Volcanology and Seismology (Phivolcs) reported on its website that the quake's epicenter was located at 112 kilometers east of Guiuan, Eastern Samar.
The quake's origin is tectonic and it has a depth of 10 kilometers. (Sunnex)