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Summary of world-wide volcanic activity 1-7 Aug 2012

Wednesday Aug 08, 2012 08:35 AM | BY: T

The new Smithsonian / USGS Weekly Volcanic Activity Report was published yesterday and is summarized as follows:

-- new activity ---

Galeras (Colombia): increased seismic activity, ash venting and steaming
Tongariro (New Zealand): summary of the 6 Aug explosive eruption
White Island (New Zealand): summary of the new activity (ash emissions) from Crater Lake

--- ongoing activity ---

Bagana (Papua New Guinea): ash emission to 3 km altitude on 3 Aug
Batu Tara (Sunda Islands, Indonesia): occasional ash eruptions reaching 2-3 km altitude (detected during 1-2 and 4-7 Aug)
Cleveland (Aleutians): A small explosion was detected at 08:38 on 4 August.
Fuego (Guatemala): increased seismicity, lava flow and strong strombolian activity, possibly pyroclastic flows during early Aug.
Karmysky (Kamchatka): moderate seismic activity, thermal anomaly
Kilauea (Hawaii): lava lakes in Halema'uma'u and Pu'u O'o, lava flows on pali and coastal plain
Nevado del Ruiz (Colombia): low levels of tremor, possibly associated with continuing gas and ash emissions. Ashfall and a strong sulfur odor reported in Manizales (30 km NW) and Chinchiná (30 km WNW). Gas and steam plume rising 700 m.
Popocatépetl (Mexico): gas and steak emissions, crater glow, occasional explosions (4 km tall eruption column on 6 Aug)
Sakurajima (Japan): occasional explosions up to 2.1 km altitude, bombs ejected to up to 800 m distance
Shiveluch (Kamchatka): intermittent explosions, growing lava dome, possible large (10 km) explosion on 27 July
Tungurahua (Ecuador): occasional small to moderate explosions (5 Aug: 3 km high plume), intense steaming
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