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Wednesday, March 26, 2008
Mindanao experienced 19 quakes in 2 weeks
By Ben O. Tesiorna
DAVAO CITY -- Central and Southern Mindanao regions experienced a total of 19 earthquakes from the period of March 3 to 22, with the strongest magnitude registering at 5.3 in the Richter scale and epicenter located 153 kilometers southeast of the City of Mati, Davao Oriental.
All quakes were tectonic in origin, meaning these were caused by the movement of the earth's crust.
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There are two major causes of earthquakes: tectonic and volcanic. Tectonic has to do with the movement of the earth's crust while volcanic has something to do with activities inside a volcano.
The Philippine Institute of Volcanology and Seismology (Phivolcs) website, www.phivolcs.dost.gov.ph, reported that the latest earthquake that registered in Mindanao was at 243 kilometers southeast of General Santos City on March 22 at around 9:36 p.m. Saturday. The tremor was measured at magnitude 4.3 and was felt at Intensity 2 in Caraga and Cateel, Davao Oriental.
Kidapawan City registered the most number of tremors at 16 incidents from March 11 to 19. March 13 had the most incidents with 11 earthquakes in just a period of one day. Kidapawan quakes registered from 1.8 to 4.7 magnitudes.
The latest quake in Kidapawan City was on March 19 with 4.0 magnitude.
Tagum City was also the epicenter of a 4.3 magnitude earthquake last March 13.
Phivolcs officials earlier said that Kidapawan had been experiencing the "swarm" of tremors but they consider this good since pressure underneath is slowly released. (Sun.Star Davao/Sunnex)
For more Philippine news, visit Sun.Star Pangasinan. (March 26, 2008 issue)
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