Taal volcano (Philippines): increased seismic activity, CO2 emissions and inflation trigger rise in alert level
Sunday Apr 10, 2011 08:28 AM |
Philolcs, the Philippine volcano monitoring agency, has increased the alert level for Taal volcano. This is based on the following observations:
- Increasing seismicity at shallow levels, suggesting that magma is rising beneath the surface. 21 earthquakes at 1-4 km depths were measured under the caldera in the last 24 hours.
- CO2 emissions have risen to 4,760 tonnes/day in late March, 4 times more than in February.
- Inflation of the volcano has been detected.
- Increased steaming is observed at vents in the caldera.
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Sunday, Jan 30, 2011
Taal volcano continues to be restless. PHIVOLCS reported slightly increased seismic activity and steam rising from the thermal area inside the Main Crater on 18 January, but temperature, acidity and color of the lake are at normal levels, and the color had not changed. [more]