Bulletin

BULUSAN VOLCANO BULLETIN, 09 March 2011, 8:00 A.M.

Wednesday, March 09, 2011 03:56 PM    Views : 1344by:PHIVOLCS

Bulusan Volcano’s (12°46.2’N, 124°03’E) seismic network recorded two (2) volcanic earthquakes and three (3) rockfall events during the past 24 hours. Steaming activity at known thermal vents ranged from wispy to weak while no steaming was observed at the summit crater. Results of precise leveling survey conducted last 01 - 05 March 2011 showed no significant change compared with the 25 - 29 January 2011 survey. No other significant volcanic activity was observed since the 21 February 2011 ash explosion. No lahar event was observed or reported.

Bulusan Volcano’s status remains at Alert Level 1. This means that the source of activity is hydrothermal and shallow. Entry to the 4-kilometer radius Permanent Danger Zone (PDZ) is strictly prohibited, since the area is at risk to sudden steam and ash explosions. Due to the prevailing wind direction, residents in the northwest and southwest sectors of the volcano are reminded to take precautions against ashfalls. Civil aviation authorities must also warn pilots to avoid flying close to the volcano’s summit as ejected ash and volcanic fragments from sudden explosions may be hazardous to aircraft. If possible aircraft should avoid flying on the western side of the volcano as volcanic debris are likely to be carried in this direction by the prevailing winds. Furthermore, people living near valleys and river/stream channels should be vigilant against sediment-laden stream flows and lahars in the event of heavy and prolonged rainfall. DOST-PHIVOLCS is closely monitoring Bulusan Volcano’s activity and any new significant development will be immediately relayed to all concerned.

S & T Trivia

" Besides inventing the banana vinegar, Maria Carlita Rex-Doran also produced an ampalaya (bittermelon) concoction for diabetes mellitus and HIV infection. The World Intellectual Property Organization (WIPO) conferred on her the Gold Medal in 1989, four years after another Filipina inventor, Olympia Gonzales, achieved the same award. "

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