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SI/USGS Weekly Volcanic Activity Report 25 November – 1 December 2009 3 December 2009

Posted by admin in activity reports, Caribbean, Chaitén, Chile, Colombia, Dukono, Ecuador, eruptions, Fuego, Galeras, Gaua, Guatemala, Hawaii, Indonesia, Japan, Kamchatka, Karkar, Karymsky, Kilauea, Kliuchevskoi, Nevado del Huila, Pacific, Papua New Guinea, Rabaul, Russia, Sakura-jima, Sangay, Sarychev Peak, Shiveluch, Soufrière Hills, Suwanose-jima, United States, Vanuatu.
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SI/USGS Weekly Volcanic Activity Report 25 November - 1 December 2009

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The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 25 November – 1 December 2009 is available on the Global Volcanism Program website. The following is a summary and not a substitute for the full report.

New activity/unrest: Galeras (Colombia), Gaua (Vanuatu), Karkar (Papua New Guinea), Sarychev Peak (Russia).

Ongoing activity: Chaitén (Chile), Dukono (Indonesia), Fuego (Guatemala), Karymsky (Russia), Kilauea (Hawaii, USA), Kliuchevskoi (Russia), Nevado del Huila (Colombia), Rabaul (Papua New Guinea), Sakura-jima (Japan), Sangay (Ecuador), Shiveluch (Russia), Soufrière Hills (Montserrat), Suwanose-jima (Japan).

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Vanuatu: Gaua volcano update 28 November 2009

Posted by admin in activity reports, eruptions, Gaua, Pacific, Vanuatu.
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The Vanuatu Geohazards Observatory has published a fresh update on the situation at Gaua volcano, which has recently shown an increased level of activity, forcing evacuations. Gaua Bulletin No. 3, dated 24 November (but only just published on the Observatory’s website) reports ‘a big explosion of the Gaua volcano in November 18th 2009 at 2pm’ followed by ‘very thick and high emissions of ash columns that were covering the areas exposed to trade winds in the West’. Photographs show the comparative size of the ash plume on 31 October and 18 November. The bulletin also notes that there was an increase in seismicity at the volcano from 25 October onwards.

The alert level for Gaua remains unchanged at 2 (‘moderate eruptions’).

For all our coverage of Gaua: Gaua « The Volcanism Blog.

Information
Global Volcanism Program: Gaua – summary information for Gaua (0507-02=)
Vanuatu Geohazards Observatory – official Vanuatu geohazards website
Vanuatu volcanoes and volcanics – information from the USGS Cascades Volcano Observatory

The Volcanism Blog

Vanuatu: Gaua evacuations continue 27 November 2009

Posted by admin in activity reports, eruptions, Gaua, Pacific, Vanuatu.
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The evacuation of residents of Gaua island in northern Vanuatu is continuing, reports Radio New Zealand International (RNZI). The active cone of Gaua volcano, Mt Garet, which has been showing low-level eruptive activity for around two months, has increased its activity over the last few days: gas emissions and ashfall have seriously affected life in the island’s eastern portion, and people from that area are being moved by boat to the unaffected western region of the island. RNZI reports that gas masks are being sent to Gaua, and that tourists are being warned to keep away from the volcano.

No update yet on the current activity at the Vanuatu Geohazards Observatory website, but in fairness it must be pointed out that the observatory’s hard-pressed staff are working with very limited resources (they don’t even have the seismographs they need to monitor Gaua adequately).

For all our coverage of Gaua: Gaua « The Volcanism Blog.

News
Gas masks sent to Vanuatu island where locals are forced to evacuate – Radio New Zealand International, 26 November 2009
Tourists warned off Vanuatu’s Gaua volcano – Radio New Zealand International, 27 November 2009

Information
Global Volcanism Program: Gaua – summary information for Gaua (0507-02=)
Vanuatu volcanoes and volcanics – information from the USGS Cascades Volcano Observatory

The Volcanism Blog

Evacuations in Vanuatu as Gaua activity increases 26 November 2009

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Gaua volcano in northern Vanuatu is reported to have erupted early today. At the moment there is no official news from Vanuatu itself, but regional news sources (see below) are reporting that gas emissions and ash fall have increased during the past two days and that 300 residents of the eastern half of Gaua island are being evacuated by the Vanuatu Government and the Red Cross to the west of the island.

Efline Garaebiti, head of the Vanuatu Government disaster monitoring team, is reported by Australian news sources as saying that it is ‘unlikely’ that Gaua volcano ‘will erupt completely’, which suggests that this is an increase in the ongoing emissions of gas and ash rather than a full-scale eruption. Strong winds in recent days may also have increased the effects of the emissions on the local population.

The Vanuatu Geohazards Observatory website has no report as yet on the current situation, and the alert level for Gaua remains at level 2, ‘minor eruption’.

For all our coverage of Gaua: Gaua « The Volcanism Blog.

News
Vanuatu volcano forces hundreds to evacuate – Australia Network News, 26 November 2009
Pacific volcano erupts, leading to evacuation of hundredsNew Straits Times, 26 November 2009
Volcano erupts in Vanuatu: Red CrossSydney Morning Herald, 26 November 2009
300 evacuated from villages in Vanuatu due to gas and ash from volcano – Radio New Zealand International, 26 November 2009

Information
Global Volcanism Program: Gaua – summary information for Gaua (0507-02=)
Vanuatu volcanoes and volcanics – information from the USGS Cascades Volcano Observatory

The Volcanism Blog

SI/USGS Weekly Volcanic Activity Report 14-20 October 2009 22 October 2009

Posted by admin in activity reports, Alaska, Bagana, Batu Tara, Caribbean, Chaitén, Chile, Cleveland, Colombia, Dukono, Ebeko, Ecuador, eruptions, Gaua, Hawaii, Indian Ocean, Indonesia, Japan, Kamchatka, Karymsky, Kilauea, Kizimen, Kliuchevskoi, Nevado del Huila, Pacific, Papua New Guinea, Piton de la Fournaise, Rabaul, Reventador, Russia, Sakura-jima, Shishaldin, Shiveluch, Soufrière Hills, United States, Vanuatu, Weekly Volcanic Activity Reports.
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SI/USGS Weekly Volcanic Activity Report 14-20 October 2009

Click on the map for a larger version (1280 x 898 pixels).

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

New activity/unrest: Chaitén (Chile), Ebeko (Russia), Gaua (Vanuatu), Kaba (Indonesia), Kizimen (Russia), Kliuchevskoi (Russia), Nevado del Huila (Colombia), Piton de la Fournaise (Réunion), Reventador (Ecuador), Soufrière Hills (Montserrat).

Ongoing activity: Bagana (Papua New Guinea), Batu Tara (Indonesia), Cleveland (Alaska, USA), Dukono (Indonesia), Karymsky (Russia), Kilauea (Hawaii, USA), Rabaul (Papua New Guinea), Sakura-jima (Japan), Sangay (Ecuador), Shishaldin (Alaska, USA), Shiveluch (Russia).

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Activity continuing at Vanuatu’s Gaua volcano 20 October 2009

Posted by admin in activity reports, eruptions, Gaua, Pacific, Vanuatu.
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Both ABC’s Australia Network News and Radio New Zealand International are reporting today that the alert level for Gaua volcano in northern Vanuatu has been raised from 1 to 2, as reported here four days ago.

The ABC story reports that SO2 emissions at the volcano have risen from nil to 3000 tonnes/day, as recorded on 3 October by volcanologist Philipson Bani: ‘for this small volcano this is huge’. Local residents are reporting a strong smell of sulphur and ash falling on their crops.

News
Ash and fumes pour from Vanuatu volcano – ABC Australia Network News, 20 October 2009
Alert level raised for Vanuatu volcano – Radio New Zealand International, 20 October 2009

Information
Global Volcanism Program: Gaua – summary information for Gaua (0507-02=)
Vanuatu Geohazards Observatory – geohazards home page for Vanuatu
Vanuatu volcanoes and volcanics – information from the USGS Cascades Volcano Observatory

The Volcanism Blog

Vanuatu: Gaua volcano alert raised 16 October 2009

Posted by admin in activity reports, eruptions, Gaua, Pacific, Vanuatu.
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The Vanuatu Geohazards Observatory issued a new bulletin on 13 October reporting the ongoing activity of Gaua volcano. The alert level has been raised to level 2 which means ‘that this volcano is going through a minor eruption’:

After the assessment of the geohazards team on Gaua volcano from 3-7 October 2009, it is confirmed that Mont Garet volcano is going through an eruptive phase starting from the 27th of September 2009. Seismic records of the seismic station installed on Gaua show that many explosions occurred on gaua volcano … Volcanic gas flux measurements on October 3rd show that 3000 tons of sulfuric dioxide is released from this volcano each day, this means that a significant quantity of magma is degassing from gaua volcano.

Monitoring continues; more news here as it comes in.

Information
Global Volcanism Program: Gaua – summary information for Gaua (0507-02=)
Vanuatu Geohazards Observatory – geohazards home page for Vanuatu
Vanuatu volcanoes and volcanics – information from the USGS Cascades Volcano Observatory

The Volcanism Blog

Warning of ‘insufficient monitoring’ as Gaua activity continues 8 October 2009

Posted by admin in activity reports, Gaua, Pacific, Vanuatu, volcano monitoring.
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Scientists monitoring the currently restless Gaua volcano in Vanuatu are relying on just one polyseismograph, leading a local seismologist to warn that insufficient monitoring is putting lives at risk:

We need back up for seismic monitoring because for the time being we have just one polyseismograph but we really need back up of two or three extra seismographs in order to locate the events.

The volcano remains on level one of the five-level alert system (where five is the highest level). Meanwhile, large earthquakes north-west of Vanuatu have shaken the area up, but with no tsunami or serious damage or loss of life. These were tectonic quakes which have no relation to the volcanic activity in Vanuatu, except in so far as both are products of subduction zone processes.

News
Seismologist says insufficient monitoring of Vanuatu volcano endangering lives – Radio New Zealand International, 8 October 2009

Information
Global Volcanism Program: Gaua – summary information for Gaua (0507-02=)
Vanuatu volcanoes and volcanics – information from the USGS Cascades Volcano Observatory

The Volcanism Blog

SI/USGS Weekly Volcanic Activity Report 30 September – 6 October 2009 8 October 2009

Posted by admin in activity reports, Alaska, Batu Tara, Caribbean, Chaitén, Chile, Cleveland, Colombia, Dukono, Ecuador, eruptions, Galeras, Gaua, Hawaii, Indonesia, Japan, Kamchatka, Karymsky, Kilauea, Kliuchevskoi, Mexico, Pacific, Papua New Guinea, Popocatépetl, Rabaul, Reventador, Russia, Sakura-jima, Sangay, Shiveluch, Soufrière Hills, Suwanose-jima, United States, Vanuatu, Weekly Volcanic Activity Reports.
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SI/USGS Weekly Volcanic Activity Report 30 September to 6 October 2009

Click on the map for a larger version (1280 x 898 pixels).

The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 30 September to 6 October 2009 is available on the Global Volcanism Program website. The following is a summary and not a substitute for the full report.

New activity/unrest: Chaitén (Chile), Cleveland (Alaska, USA), Galeras (Colombia), Gaua (Vanuatu), Karymsky (Russia), Kliuchevskoi (Russia), Sakura-jima (Japan), Shiveluch (Russia), Soufrière Hills (Montserrat).

Ongoing activity: Batu Tara (Indonesia), Dukono (Indonesia), Kilauea (Hawaii, USA), Langila (Papua New Guinea), Popocatépetl (México), Rabaul (Papua New Guinea), Reventador (Ecuador), Sangay (Ecuador), Suwanose-jima (Japan).

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Increased activity reported at Gaua 7 October 2009

Posted by admin in activity reports, Gaua, Pacific, Vanuatu.
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The spate of restlessness at Gaua volcano in Vanuatu is evidently continuing. Radio New Zealand International reports that more activity has been observed by the volcanological team sent to Gaua to assess the situation. One of the team reports that very late on 5 October ‘an increase of a high volcanic high frequency’ was observed, which is presumably a reference to high frequency volcanic tremor.

The current alert level at Gaua is one, on a scale of one (lowest) to five (highest). The volcano is being closely monitored, and if there are further increases in activity the alert level will be increased to two, say the volcanologists.

News
Close eye kept on Vanuatu volcano that’s spitting ash – Radio New Zealand International, 6 October 2009

Information
Global Volcanism Program: Gaua – summary information for Gaua (0507-02=)
Vanuatu volcanoes and volcanics – information from the USGS Cascades Volcano Observatory

The Volcanism Blog