Philippines

NDRRMC update - SitRep No. 8 re Taal Volcano Update

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Sources: DOST-PHIVOLCS and OCD Region IV–A

  1. SITUATION OVERVIEW
  • Taal Volcano’s (14.0000°N, 120.9833°E) seismic netw ork recorded six (6) volcanic earthquakes during the past 24 hours. Water temperature at the Taal Main Crater Lake slightly increased from 29.8°C to 30 1° C

  • Likewise, gas measurements conducted last January, February and March 2011 yielded carbon dioxide (CO²) emission values of 2,250 tonnes per day (t/d), 1,875 t/d and 4,670 t/d respectively. This large rise in CO² concentration indicates gas release from the magma at depth

  • Result of the ground deformation survey (precise levelling) conducted around the volcano Island last 05-11 April 2011 showed that volcano edifice is inflated as compared with the 02-09 February 2011 survey

  • Alert Level 2 is hoisted over Taal Volcano, with the interpretation that magma has been intruding towards the surface as manifested by CO2 being released in the Main Crater Lake and increase in seismic activity.