Bulletin

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

Wednesday, March 09, 2011 03:55 PM    Views : 1465by:PHIVOLCS

Taal Volcano’s (14°00.1’N, 120°59.6’E) seismic network recorded no volcanic earthquake during the past 24 hours. Field observation and measurements conducted on 06 March 2011 at the eastern sector inside the Main Crater Lake (via Calauit) showed that steaming activity at the thermal area was weak. The crater lake level slightly receded from 0.55 meter to 0.52 meter. The lake water temperature slightly increased to 31.0 0C from 30.5 0C while the pH value became slightly less acidic from 2.97 to 3.01. Results of the ground deformation survey (precise leveling) conducted around the Volcano Island this February showed a slight inflation as compared with the December 2010 survey.

Alert Level 1 is still enforced over Taal Volcano. This means that a hazardous eruption is not imminent. However, the public is reminded that the Main Crater should be strictly off-limits due to sudden occurrence of steam explosions and accumulation of toxic gases. The northern portion of the Main Crater rim, in the vicinity of Daang Kastila trail, may also be dangerous when increased steam emission is reactivated along existing fissures. Moreover, the public is also reminded that the entire Volcano Island is a Permanent Danger Zone (PDZ), and permanent settlement in the island is strictly not recommended.

S & T Trivia

" Roberto del Rosario invented the piano tuner's guide, the piano keyboard stressing device, the voice color tape, and the one-man- band (OMB). The OMB was later developed as the Sing-Along-System (SAS) to aid his voice students. His first model came out in the 1970s, and was copied by the Japanese who named their device the karaoke. The July 24, 1999 Philippine Daily Inquirer reported that Del Rosario filed a suit and was consequently awarded sole authority over karaoke's Philippine production. "

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