TAAL VOLCANO BULLETIN 31 December 2015 8:00 A.M. PDF Print
Thursday, 31 December 2015 07:32

Taal Volcano’s seismic monitoring network recorded one (1) volcanic earthquake during the past 24 hours. Field measurements conducted on 24 December 2015 at the eastern sector of the Main Crater Lake yielded a decrease in water temperature from 32.9°C to 31.5°C, an increase in water level from 0.42 to 0.71 meter, and a decrease in acidity from pH 2.73 to 2.80. Ground deformation measurements through precise leveling surveys from November 3 to 16, 2015 indicated very slight deflation of the edifice compared to September 21 to October 1, 2015, consistent with slight deflation recorded by continuous GPS since September 2015. However, both consistently show a general inflationary trend since January 2015. Carbon dioxide (CO2) emission at the Main Crater Lake decreased to 1566 tons/day in October 2015 from 2300 tons/day in July 2015.

Alert Level 1 remains in effect over Taal Volcano. This means that hazardous eruption is not imminent. The public, however, is reminded that the Main Crater should be strictly off-limits because sudden steam explosions may occur and high concentrations of toxic gases may accumulate. The northern portion of the Main Crater rim, in the vicinity of Daang Kastila Trail, may also become hazardous when steam emission along existing fissures suddenly increases. Furthermore, the public is also reminded that the entire Volcano Island is a Permanent Danger Zone (PDZ), and permanent settlement in the island is strongly not recommended.