Volcanos

Roundup of Global Volcanic Activity – New Activity for the week 9 February – 15 February 2022

Krakatau – Sunda Strait : PVMBG reported that weather clouds and fog often obscured views of Anak Krakatau during 9-15 February. During periods of clear weather diffuse white plumes were rising as high as 50 m.

Langila – New Britain (Papua New Guinea) : The Darwin VAAC reported that on 9 February ash plumes from Langila were visible in satellite images rising 4.3 km (14,000 ft) a.s.l. and drifting SW.

Taal – Luzon (Philippines) : PHIVOLCS reported that unrest at Taal continued during 8-15 February, with persistent low-level background tremor, hot volcanic fluids circulating in the crater lake, and daily gas-and-steam plumes that rose as high as 3 km above the lake and drifted mainly SW and W. Sulfur dioxide emissions continued to be elevated, averaging 8,686-10,270 tonnes/day on 8, 10, and 12 February. Each day during 10-15 February the seismic network recorded as many as 33 volcanic earthquakes, 1-10 low-frequency volcanic earthquakes, and 2-24 episodes of volcanic tremor. One short-lived phreatomagmatic burst recorded at 1616 on 10 February produced a plume that rose 300 m from the lake and drifted SW. One hybrid event was recorded during 13-14 February. Tilt, continuous GPS, and InSAR data all indicated that Taal Volcano Island and the Taal region had begun deflating in October 2021.

Tangkuban Parahu – Western Java : PVMBG reported that during 30 January-13 February diffuse white steam-and-gas plumes from vents in Tangkuban Parahu’s Ratu Crater did not rise above the crater rim. At 1143 on 12 February steam-and-gas venting from Ecoma Crater (within Ratu Crater) intensified, with bursts of emissions rising 100 m above a new vent. The emissions were less intense the next day, rising 20-60 m. Seismicity and deformation data, along with gas and temperature measurements, all indicated that the activity was the result of hydrothermal processes with no new magmatic intrusion.

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