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SI/USGS Weekly Volcanic Activity Report, 14 January 2009 – 20 January 2009 22 January 2009

Posted by admin in activity reports, Barren Island, Chaitén, Dieng Volcanic Complex, Dukono, eruptions, Fuego, Galeras, Karymsky, Kilauea, Kliuchevskoi, Llaima, Nevado del Huila, Poás, Rabaul, Sakura-jima, Shiveluch, Soufrière Hills, Tungurahua, Weekly Volcanic Activity Reports.
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SI/USGS Weekly Volcanic Activity Report 14 January 2009 - 20 January 2009

The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report covering 14 January 2009 to 20 January 2009 is now available on the Global Volcanism Program website. The following is a summary and not a substitute for the full report.

New activity: Dieng Volcanic Complex (Java, Indonesia), Poas (Costa Rica), Rabaul (Papua New Guinea).

Ongoing activity: Barren Island (Andaman Islands), Chaiten (Chile), Dukono (Halmahera, Indonesia), Fuego (Guatemala), Galeras (Colombia), Karymsky (Kamchatka, Russia), Kilauea (Hawaii, USA), Kliuchevskoi (Kamchatka, Russia), Llaima (Chile), Nevado del Huila (Colombia), Sakura-jima (Japan), Shiveluch (Kamchatka, Russia), Soufriere Hills (Montserrat), Tungurahua (Ecuador).

NEW ACTIVITY

Dieng Volcanic Complex (Java, Indonesia): 15 Jan 09, two minor phreatic eruptions from Sibanteng crater.

Poás (Costa Rica): landslides, rockfalls, new fractures and increased fumarolic activity reported following magnitude 6.2 earthquake near Poás on 8 Jan 09; phreatic eruption in the crater lake on 12 Jan 09.

Rabaul (Papua New Guinea): 14-18 Jan 09, ash plumes from Tavurvur cone to 3km a.s.l.; 16 Jan 09, grey ash plumes reported.

ONGOING ACTIVITY

Barren Island (Andaman Islands): 18-19 Jan 09, ash plumes to 3km a.s.l.

Chaitén (Chile): 9-12 Jan 09, increased seismicity; constant partial collapses of active lava dome; 15, 17, 19 and 20 Jan 09, ash plumes to 1.5-2.1km a.s.l.; small thermal anomaly detected on 19 Jan 09.

Dukono (Halmahera, Indonesia): 18 Jan 09, ash plumes to 3km a.s.l.

Fuego (Guatemala): 14 Jan 09, ash plume to 4.9km a.s.l.; 19 and 20 Jan 09, explosions produced ash plumes to 4.1-4.6km a.s.l.; rumbling sounds and avalanches reported.

Galeras (Colombia): 14-15 and 17-19 Jan 09, greyish plumes to altitudes below 5.7km a.s.l.

Karymsky (Kamchatka, Russia): 10-14 Jan 09, seismic activity elevated above background levels, possible ash-and-gas explosions; 8-12 and 14-15 Jan 09, thermal anomaly detected; 8 and 12 Jan 09, gas and steam plumes emitted.

Kilauea (Hawaii, USA): 14-20 Jan 09, lava flows through tube system to Waikupanaha ocean entry, surface flows and incandescence; 17-18 Jan 09, phreatic explosions at the ocean entry; 16 Jan 09, sulphur dioxide concentrations from Halemaumau vent reached unsafe levels; 17 Jan 09, rockfalls reported at Halemaumau vent, with vent rim collapses on 18 Jan 09 and faint incandescence within the vent on 20 Jan 09.

Kliuchevskoi (Kamchatka, Russia): 9-16 Jan 09, seismic activity above background levels, gas-and-steam plumes to 6.8km a.s.l.; 9 and 10 Jan 09, strombolian activity noted. Large daily thermal anomaly noted at the crater.

Llaima (Chile): 11 Jan 09, weak ash emissions reported.

Nevado del Huila (Colombia): 18-19 Jan 09, continuous emissions observed producing white plumes to under 1km above the summit.

Sakura-jima (Japan): 15 Jan 09, explosion produced plume to 1.8km a.s.l.

Shiveluch (Kamchatka, Russia): 9-16 Jan 09, seismic activity above background levels; 9 Jan 09, ash plume to 7.3km a.s.l.; 14 Jan 09, ash plume to 6.9km a.s.l.; on other days in the reporting period, ash plumes to 5.5km; 8-10 and 12-14 Jan 09, gas-and-steam activity; large daily thermal anomaly reported over the lava dome.

Soufrière Hills (Montserrat): 9-16 Jan 09, low seismicity, minimal rockfalls, no lava dome incandescence.

Tungurahua (Ecuador): 13 and 15-16 Jan 09, steam-and-ash plumes to 6-7km a.s.l.; almost daily ashfall reported in areas to north, west and south-west; roaring and exposions occasionally reported; 15, 18 and 19 Jan 09, incandescence reported in the crater; 16 Jan 09, small lahar to the south; 19 Jan 09, crater fumaroles observed.

ACKNOWLEDGEMENTS AND DISCLAIMER

The foregoing is a summary of the Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report covering 14 January 2009 to 20 January 2009. It is provided for information only, and is based on but not a substitute for the full report, which comes with its own criteria and disclaimers. The map base is derived from the Smithsonian Institution/USGS/US Naval Research Laboratory This Dynamic Planet website.

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