Taal volcano (Luzon, Philippines): Volcanic Alert Level raised to Level 2
Tue, 9 Mar 2021, 09:0809:08 AM | BY: MARTIN
The Philippine Institute of Volcanology and Seismology (PHIVOLCS) noted that the alert level for the volcano was raised to "orange", due to ongoing elevated seismic activity under the volcano during the past three weeks.
Webcam imagery of Taal volcano today (image: @NDRRMC_OpCen/twitter)
Seismic instruments recorded 28 events of volcanic tremor (866 in total since 13 Feb) including 4 low frequency volcano-tectonic earthquakes at shallow depths 1,5 km beneath the volcano edifice. Volcanic tremor lasted from 3 to 17 minutes and remains at elevated levels compared to previous values.
The Main Crater Lake temperature and acidity (on 12 Feb 2021 was at a maximum of 77.1°C with a pH of 1.59) continue to increase caused by volcanic gas reaching the shallow hydrothermal system that feeds into the lake accompanied by degassing.
GPS data and satellite-based radar analysis show that the volcano continues a slow trend of inflation. These observations indicate that magma is accumulating inside its reservoirs.
Volcano Island is within the designated Permanent Danger Zone (PDZ) of the Taal Volcano due to its location within the crater lake. The evacuations affected the remaining small villages located on the shores of the island, as they are only a few kilometer distance from the active crater lake in the center of the island away.
Source: Phillippine Institute of Volcanology and Seismology volcano activity update 9 March 2021
Tue, 23 Feb 2021, 12:40
Not much has changed since the last update, but seismic activity under the volcano has decreased. In the latest volcano bulletin, PHIVOLCS reported: ... Read all