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

jeudi août 09, 2012 08:35 | AUTEUR : 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
---
Source:
Actualités précédentes
jeudi, août 09, 2012
Tongariro volcano in New Zealand has stayed calm. First analysis of the ash confirms that the eruption did not produce any significant amount if at all of fresh magma, and therefore was so-called phreatic. ... [details]
mercredi, août 08, 2012
New Zealand's 2 currently active volcanoes dominate the volcano-related headlines of news in the world: ... [details]

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