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Philippines: PHIVOLCS-DOST conducts REDAS trainings for Surigao del Sur, Dinagat and Bohol provinces

Written by Maria Leonila P. Bautista

PHIVOLCS-DOST conducted Rapid Earthquake Damage Assessment System (REDAS) trainings for three provinces as part of the third component of the READY Project. In this component, the REDAS software which was originally developed by PHIVOLCS for earthquake emergency response, is now being used as a tool to mainstream disaster risk reduction into the local development process under the READY Project. The Surigao del Sur and Dinagat trainings were held on June 22 to 29, 2009 at Davao City while the Bohol training was held at Bohol from July 6 to 10, 2009.

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Philippines: Mayon Volcano advisory

At 9:12 A.M. today, Mayon Volcano manifested mild ash explosion that reached an approximate height of 200 m above the summit crater before drifting east-northeast. The ash-ejection was recorded as explosion-type earthquake which lasted for one minute by the seismic network deployed around the volcano.Immediately after the explosion, visual observation becomes hampered by the thick clouds. During the past weeks, seismic activity had slightly increased and crater glow had slightly intensified. Precise leveling surveys conducted at Mayon from May 10 - 22, 2008 compared
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Philippines: Mayon Volcano Bulletin - 12 Sep 2006

Mayon Volcano's (13.2576°N, 123.6856°E) activity during the past 24 hours was dominated by 253 tremor episodes associated with lava chunks detaching from the summit crater and intermittent lava flow at the southeast flank of the volcano. No volcanic earthquake however, was recorded. The Sulfur Dioxide emission rate from the crater was maintained at 1,500 tonnes per day. Steaming activity from the volcano's summit was moderate with steam plume drifting east-northeast to northeast.

Alert Level 3 is now in effect which means that the new Extended Danger Zone (EDZ) of 7 kilometers covering

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Philippines: Mayon Volcano Bulletin - 11 Sep 2006

In the past 24 hours, there were some 6 volcanic earthquakes and 206 tremor episodes detected. The Sulfur Dioxide emission rate from the crater was estimated at about 1,500 tonnes per day with plume drifts varying from northeast to east-northeast. Ground deformation measurements indicated an overall deflation of the edifice.

These observations generally show an elevated state of unrest, although there is an apparent decline of activity since late August. PHIVOLCS is presently undertaking an assessment on the possibility of lowering the alert status of Mayon and results of this evaluation

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Philippines: Mayon Volcano Bulletin - 09 Sep 2006

A total of two (2) volcanic earthquakes and 300 tremor episodes were detected in the past 24 hours. Measurements of Sulfur Dioxide emission rate decreased slightly to about 1,701 tonnes per day (t/d) yesterday from the previous 1,841 t/d. Steaming activity varied from moderate to voluminous with plume drifting north to northeast.

In summary, the continuing decline in key parameters such as seismic activity, Sulfur Dioxide emission rate and ground deformation may signify a slowdown in the volcano's activity. Such a downtrend may soon allow for a lowering in the alert status of the volcano.