SI/USGS Weekly Volcanic Activity Report, 28 January 2009 – 3 February 2009 5 February 2009Posted by admin in activity reports, Asama, Barren Island, Chaitén, eruptions, Fuego, Karymsky, Kilauea, Kliuchevskoi, Pacaya, Rabaul, Redoubt, Sakura-jima, Santa María, Shiveluch, Soufrière Hills, Tungurahua, Ubinas, Weekly Volcanic Activity Reports.
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The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report covering 28 January 2009 to 3 February 2009 is now available on the Global Volcanism Program website. The following is a summary and not a substitute for the full report.
- The current report: Weekly Volcanic Activity Report.
- Previous reports: Weekly Reports Archive.
- The SI/USGS map of volcanoes discussed this week.
New activity: Asama (Japan), Redoubt (Alaska, USA).
Ongong activity: Barren Island (Andaman Islands), Chaitén (Chile), Fuego (Guatemala), Karymsky (Kamchatka, Russia), Kilauea (Hawaii, USA), Kliuchevskoi (Kamchatka, Russia), Pacaya (Guatemala), Rabaul (Papua New Guinea), Sakura-jima (Japan), Santa María (Guatemala), Shiveluch (Kamchatka, Russia), Soufrière Hills (Montserrat), Tungurahua (Ecuador), Ubinas (Peru).
Asama (Japan): 21 Jan 09, thin ash blanket observed on NW crater rim; 1 Feb 09, increased seismicity and ground deformation detected; 2 Feb 09, eruption produced ash plume to 3-4.6km a.s.l. which drifted SE.
Redoubt (Alaska, USA): 27 Jan 09 -3 Feb 09, elevated seismicity; 27 Jan 09, muddy meltwater discharge observed below summit crater; 29 Jan 09, possible diffuse ash plume identified on satellite imagery; 30 Jan 09, increased fumarolic activity, enlargement of melt features and runoff observed; 31 Jan 09 – 2 Feb 09, steam plumes rising above summit intermittently observed.
Barren Island (Andaman Islands): 31 Jan 09, ash plume drifted 55km SE.
Chaitén (Chile): 28 Jan 09 – 2 Feb 09, active lava dome (‘Domo Nuevo 2’) continued to grow and produced block-and-ash flows; 28 Jan 09, dense ash plume rose 500m above the dome and was followed by a block-and-ash flow to the W.
Fuego (Guatemala): 30 Jan 09 and 3 Feb 09, multiple explosions (some with rumbling sounds and shockwaves) produced grey ash plumes to 4.1-4.7km a.s.l. and drifted S and SE, fumarolic plumes rose 100m above crater; 30 Jan 09, incandescent material ejected 50-100m above the crater.
Karymsky (Kamchatka, Russia): 23-30 Jan 09, seismic activity at background levels; 23 and 24 Jan 09, weak thermal anomaly detected.
Kilauea (Hawaii, USA): 28 Jan 09 – 3 Feb 09, lava flowed through tubes SE to the ocean; 28 Jan 09, explosions observed at ocean entry; incandescence and thermal anomalies suggesting surface flows observed; Halemauma vent continued producing white plume drifting SW, incandescence intermittently seen at the vent.
Kliuchevskoi (Kamchatka, Russia): 22-24 Jan 09 and 28 Jan 09, seismicity at background levels; 25-27 Jan 09, seismicity above background levels; diffuse gas-and-steam plumes noted; weak daily thermal anomaly observed at the crater.
Pacaya (Guatemala): 30 Jan 09 and 3 Feb 09, white and blue fumarolic plumes from MacKenney cone drifted S and W at low altitude, 75-100m lava flow descended SW flank.
Rabaul (Papua New Guinea): 28-30 Jan 09, ash plumes from Tavurvur cone rose to 1.8-4.3km a.s.l. and drifted ESE andSE.
Sakura-jima (Japan): 28 Jan 09 and 1-3 Feb 09, explosions and eruptions produced ash plumes to 1.8-3.4km a.s.l., drifted SE, S and SW.
Santa María (Guatemala): 30 Jan 09 and 3 Feb 09, fumarolic plumes to 100m above Santaguito lava dome complex, explosions produced plumes to 2.6-3.2km a.s.l., drifted W, SW and S; periodically incandescent avalanches descended S and W flanks of Caliente lava dome.
Shiveluch (Russia, Kamchatka): 22-30 Jan 09, seismic activity above background levels; 22 Jan 09, ash plumes to 7km a.s.l. and to 4km a.s.l. on other days in reporting period; 23-24 and 26-27 Jan 09, weak gas-and-steam activity; large daily thermal anomaly noted over lava dome.
Soufrière Hills (Montserrat): 23-30 Jan 09, low seismicity, minimal rockfalls, no lava dome incandescence.
Tungurahua (Ecuador): 27 Jan 09 – 2 Feb 09, ash-and-steam and ash plumes drifted NE, S and SW; crater incandescence and occasional roaring noted; 30 Jan 09 and 1-2 Feb 09, ashfall reported on SW flank.
Ubinas (Peru): 31 Jan 09, ash plume to 6.7km a.s.l. and drifted SW.
ACKNOWLEDGEMENTS AND DISCLAIMER
The foregoing is a summary of the Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report covering 28 January 2009 to 3 February 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.