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SI/USGS Weekly Volcanic Activity Report, 5-11 January 2011 13 January 2011

Posted by admin in activity reports, Bulusan, Caribbean, Dukono, Ecuador, eruptions, Etna, Fuego, Guatemala, Hawaii, Indonesia, Japan, Kamchatka, Karymsky, Kilauea, Kizimen, Manam, Merapi, Nicaragua, Pacaya, Reventador, Russia, Sakura-jima, San Cristóbal, Santa María, Shiveluch, Soufrière Hills, Suwanose-jima, Tungurahua, United States, Weekly Volcanic Activity Reports.
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Here is the Weekly Volcanic Activity Report covering 5 to 11 January 2010, issued by the Smithsonian Institution and United States Geological Survey and compiled by Sally Kuhn Sennert. Some selected highlights:

  • Etna: still restless, with weak emissions, strombolian activity and degassing
  • Kizimen: eruptive activity continues with continuous emissions to 6-8 km a.s.l. and ashfall
  • Fuego: explosions, incandescence, ash plumes and ashfall
  • Merapi: lahars cause floods and damage on Merapi’s flanks

The maps accompanying this report will be available shortly – apologies for the delay.

The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 5-11 January 2011 is now available on the Global Volcanism Program website. The following is a summary and not a substitute for the full report.

New activity/unrest: Etna (Italy), Kizimen (Russia), Manam (Papua New Guinea).

Ongoing activity: Bulusan (Philippines), Dukono (Indonesia), Fuego (Guatemala), Karymsky (Russia), Kilauea (Hawaii, USA), Merapi (Indonesia), Pacaya (Guatemala), Reventador (Ecuador), Sakura-jima (Japan), San Cristóbal (Nicaragua), Santa María (Guatemala), Shiveluch (Russia), Soufrière Hills (Montserrat), Suwanose-jima (Japan), Tungurahua (Ecuador).

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SI/USGS Weekly Volcanic Activity Report 18-24 August 2010 26 August 2010

Posted by admin in activity reports, Ambrym, Batu Tara, Caribbean, Colombia, Dukono, eruptions, Galeras, Hawaii, Indonesia, Japan, Kamchatka, Karymsky, Kilauea, Kliuchevskoi, Mexico, Nicaragua, Pacific, Pagan, Papua New Guinea, Popocatépetl, Russia, Sakura-jima, San Cristóbal, Sangay, Shiveluch, Soufrière Hills, Suwanose-jima, Ulawun, United States, Vanuatu, Weekly Volcanic Activity Reports.
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Here’s the regular review of the past week’s volcanic activity, compiled by Sally Kuhn Sennert and published by the Global Volcanism Program:

  • Galeras: erupted on 25 August
  • Popocatépetl: produced a 1-km steam plume on 23 August
  • San Cristóbal: a report of a steam plume on 20 August

SI/USGS Weekly Volcanic Activity Report 18-24 August 2010

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

The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 18-24 August 2010 is now 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).

Ongoing activity: Ambrym (Vanuatu), Batu Tara (Indonesia), Dukono (Indonesia), Karymsky (Russia), Kilauea (Hawaii USA), Kliuchevskoi (Russia), Pagan (Mariana Islands), Popocatépetl (Mexico), Sakura-jima (Japan), San Cristóbal (Nicaragua), Sangay (Ecuador), Shiveluch (Russia), Soufrière Hills (Montserrat), Suwanose-jima (Japan), Ulawun (Papua New Guinea).

Note: a.s.l. = ‘above sea level’.

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Two explosions as Nicaragua’s San Cristóbal clears its throat 5 July 2010

Posted by admin in activity reports, Nicaragua, San Cristóbal.
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Dos grandes “eructos” de volcán San Cristóbal‘ says the headline in Nicaragua’s El Nuevo Diario newspaper: ‘two big “belches” from San Cristóbal volcano’. The eructations in question happened on Friday afternoon, 2 July 2010: two explosions from the summit crater at about 13:05 and 13:10 ejected pyroclastic material, ‘including rocks with a diameter of up to ten metres’, which caused fires in nearby grasslands. A ‘mushroom cloud’ of ash was produced by the second explosion, and light ashfall occurred in villages NW of the volcano. No damage or injuries were reported. An emergency plan was activated for the areas around the volcano, but there were no further signs of activity over the weekend. The Instituto Nicaragüense de Estudios Territoriales (INETER) described Friday’s activity as ‘normal degassing’.

News
Dos grandes “eructos” de volcán San CristóbalEl Nuevo Diario, 4 July 2010

Information
Global Volcanism Program: San Cristóbal – summary information for San Cristóbal (1404-02=)
Instituto Nicaragüense de Estudios Territoriales – INETER main page

The Volcanism Blog

SI/USGS Weekly Volcanic Activity Report 9-15 June 2010 22 June 2010

Posted by admin in activity reports, Alaska, Bagana, Batu Tara, Bezymianny, Caribbean, Chile, Cleveland, Dukono, Ecuador, eruptions, Eyjafjöll, Fuego, Gaua, Guatemala, Hawaii, Iceland, Indonesia, Japan, Kamchatka, Karymsky, Kilauea, Kliuchevskoi, Melimoyu, Mexico, Nicaragua, Pacific, Papua New Guinea, Popocatépetl, Russia, Sakura-jima, San Cristóbal, Shiveluch, Soufrière Hills, Tungurahua, Ulawun, United States, Vanuatu, Weekly Volcanic Activity Reports.
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Some highlights from the last week of volcanic activity reported by the Global Volcanism Program:

  • Melimoyu: increased seismicity leads to heightened alert level
  • Tungurahua: daily explosions and ashfall
  • Eyjafjallajökull: earthquakes, steam plumes
  • Soufrière Hills: rockfalls and pyroclastic flows

SI/USGS Weekly Volcanic Activity Report 9-15 June 2010

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

The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 9-15 June 2010 is now available on the Global Volcanism Program website. The following is a summary and not a substitute for the full report.

New activity/unrest: Bezymianny (Russia), Cleveland (Alaska, USA), Melimoyu (Chile), Pacaya (Guatemala), San Cristóbal (Nicaragua), Sarigan (Mariana Islands), Tiatia (Russia), Tungurahua (Ecuador), Ulawun (Papua New Guinea).

Ongoing activity: Bagana (Papua New Guinea), Batu Tara (Indonesia), Dukono (Indonesia), Eyjafjallajökull (Iceland), Fuego (Guatemala), Gaua (Vanuatu), Karymsky (Russia), Kilauea (Hawaii USA), Kliuchevskoi (Russia), Popocatépetl (Mexico), Sakura-jima (Japan), Shiveluch (Russia), Soufrière Hills (Montserrat).

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SI/USGS Weekly Volcanic Activity Report 16-22 December 2009 23 December 2009

Posted by admin in activity reports, Alaska, Bezymianny, Caribbean, Chaitén, Chile, Cleveland, Ecuador, eruptions, Gaua, Hawaii, Indonesia, Japan, Kamchatka, Karymsky, Kilauea, Kliuchevskoi, Mayon, Pacific, Russia, Sakura-jima, San Cristóbal, Shiveluch, Soufrière Hills, Suwanose-jima, United States, Vanuatu, Weekly Volcanic Activity Reports.
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SI/USGS Weekly Volcanic Activity Report 16-22 December 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 16-22 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: Bezymianny (Russia), Cleveland (Alaska, USA), Gaua (Vanuatu), Mayon (Philippines), San Cristóbal (Nicaragua).

Ongoing activity: Chaitén (Chile), Karymsky (Russia), Kilauea (Hawaii, USA), Kliuchevskoi (Russia), Sakura-jima (Japan), Sangay (Ecuador), Shiveluch (Russia), Soufrière Hills (Montserrat), Suwanose-jima (Japan).

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SI/USGS Weekly Volcanic Activity Report 2-8 December 2009 10 December 2009

Posted by admin in activity reports, Ambrym, Caribbean, Chaitén, Chile, Colima, Dukono, eruptions, Fuego, Guatemala, Hawaii, Indonesia, Japan, Kamchatka, Karymsky, Kilauea, Kliuchevskoi, Llaima, Mexico, Nicaragua, Papua New Guinea, Rabaul, Russia, Sakura-jima, San Cristóbal, Shiveluch, Soufrière Hills, Suwanose-jima, United States, Vanuatu, Weekly Volcanic Activity Reports.
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SI/USGS Weekly Volcanic Activity Report 2-8 December 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 2-8 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: Llaima (Chile).

Ongoing activity: Ambrym (Vanuatu), Chaitén (Chile), Colima (Mexico), Dukono (Indonesia), Fuego (Guatemala), Karymsky (Russia), Kilauea (Hawaii, USA), Kliuchevskoi (Russia), Rabaul (Papua New Guinea), Sakura-jima (Japan), San Cristóbal (Nicaragua), Shiveluch (Russia), Soufrière Hills (Montserrat), Suwanose-jima (Japan).

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San Cristóbal’s ‘abnormal’ activity causes concern 5 October 2009

Posted by admin in activity reports, natural hazards, Nicaragua, San Cristóbal.
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‘The steady expulsion of gas and ash’ at San Cristóbal volcano in Nicaragua is causing concern for the surrounding population and the civil defence authorities, reports the Nicaraguan paper El Nuevo Diario: the volcano ‘has had three months of abnormal activity, although sometimes its behaviour is relatively calm’.

The inhabitants of communities affected by the volcano’s emissions – Chichigalpa, Posoltega, Chinandega and El Viejo – have expressed unease at the consequences for their health, and the local government has warned that the ‘fumes and ash could have dangerous consequences for the population’. The Instituto Nicaragüense de Estudios Territoriales (INETER) is constantly monitoring the volcano, which last erupted, on a small scale, a month ago.

News
Sigue actividad de fumarolas en el San CristóbalEl Nuevo Diario, 4 October 2009

Information
Global Volcanism Program: San Cristóbal – summary information for San Cristóbal (1404-02=)
Instituto Nicaragüense de Estudios Territoriales – INETER main page
INETER Comunicados Oficiales – INETER volcano bulletins (not up to date)

The Volcanism Blog

SI/USGS Weekly Volcanic Activity Report 2-8 September 2009 9 September 2009

Posted by admin in activity reports, Batu Tara, Chaitén, Chile, Dukono, eruptions, Hawaii, Indonesia, Japan, Kamchatka, Kilauea, Koryaksky, Mexico, Nicaragua, Papua New Guinea, Popocatépetl, Rabaul, Russia, Sakura-jima, San Cristóbal, Shiveluch, Suwanose-jima, United States, Weekly Volcanic Activity Reports.
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SI/USGS Weekly Volcanic Activity Report 2-8 September 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 2-8 September 2009 is available on the Global Volcanism Program website. The following is a summary and not a substitute for the full report.

New activity: Koryaksky (Russia), San Cristóbal (Nicaragua).

Ongoing activity: Batu Tara (Indonesia), Chaitén (Chile), Dukono (Indonesia), Kilauea (Hawaii, USA), Popocatépetl (Mexico), Rabaul (Papua New Guinea), Sakura-jima (Japan), Shiveluch (Russia), Suwanose-jima (Japan).

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Eruption at San Cristóbal, Nicaragua 7 September 2009

Posted by admin in activity reports, eruptions, Nicaragua, San Cristóbal.
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The northernmost of Nicaragua’s active volcanoes, San Cristóbal, erupted yesterday. El Nuevo Diario reports that ‘eight explosions with emissions of brown ash and gas’ took place on Sunday afternoon. The explosions caused alarm, and an alert was issued for surrounding districts by the national civil defence service, but there are no reports of casualties or significant disruption. The local civil defense chief reported that the plume produced by the initial explosion reached a height of 700 metres above the crater, but the Instituto Nicaragüense de Estudios Territoriales (INETER) is quoted as reporting a height of 200 metres:

A statement from the Instituto Nicaragüense de Estudios Territoriales reports that at 1:50 this afternoon San Cristóbal volcano produced explosions of gas and ashes. The first explosion was detected by the seismic station located on the south-west slope of this volcano, and generated a column that reached an approximate altitude of 200 metres, remaining static because of the absence of wind. There then were four explosions of lesser intensity. According to reports from Defensa Civil personnel in the communities around the volcano, the activity continued until approximately 2:40 in the afternoon.

The INETER statement quoted by El Nuevo Diario does not seem as yet to be available on the volcanology section of the INETER website.

Washington VAAC reported ash at FL280 (i.e. 28000 feet/8500 metres altitude) following the eruption yesterday. The latest Washington ash advisories report no emissions.

Regular, relatively small-scale explosive eruptions are characteristic of San Cristóbal, which last erupted in November 2008. By the way, the Associated Press report wrongly states that the last eruption was in 2006. In fact there was a signficant VEI=2 eruption lasting from November 2005 to May 2006, then two eruptions in 2008, in June and November. It isn’t just AP that gets this wrong, however: Nicaragua’s La Prensa didn’t notice the 2008 eruptions either, and Univisión is busy headlining ‘tres años de inactividad’ when it should be ‘menos de un año de inactividad’.

News
8 explosiones en el San CristóbalEl Nuevo Diario, 6 September 2009
Volcán de Nicaragua lanza arena luego de tres años de inactividad – Univisión, 6 September 2009
Ofrece espectáculo la explosión de un volcán – Milenio.com, 6 September 2009
Nicaragua’s San Cristobal volcano spews ashes, gas – Associated Press, 7 September 2009
San Cristóbal lanza humo y arenaLa Prensa, 7 September 2009

Information
Global Volcanism Program: San Cristóbal – summary information for San Cristóbal (1404-02=)
Instituto Nicaragüense de Estudios Territoriales – INETER main page
INETER Comunicados Oficiales – INETER volcano bulletins (not up to date)

The Volcanism Blog

SI/USGS Weekly Volcanic Activity Report, 13-19 May 2009 20 May 2009

Posted by admin in activity reports, Alaska, Batu Tara, Caribbean, Chaitén, Chile, Colombia, Dukono, Ecuador, eruptions, Galeras, Hawaii, Indonesia, Japan, Kamchatka, Kilauea, Manam, Nicaragua, Papua New Guinea, Peru, Redoubt, Reventador, Russia, Sakura-jima, San Cristóbal, Shiveluch, Suwanose-jima, Tonga, Tungurahua, Ulawun, United States, Weekly Volcanic Activity Reports.
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SI/USGS Weekly Volcanic Activity Report 13-19 May 2009

The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report covering 13-19 May 2009 is available on the Global Volcanism Program website. The following is a summary and not a substitute for the full report.

New activity: Galeras (Colombia), Manam (Papua New Guinea), San Cristóbal (Nicaragua), West Mata (Tonga).

Ongoing activity: Batu Tara (Komba Island, Indonesia), Chaitén (Chile), Dukono (Halmahera, Indonesia), Kilauea (Hawaii), Redoubt (Alaska, USA), Reventador (Ecuador), Sakura-jima (Japan), Shiveluch (Kamchatka, Russia), Soufrière Hills (Montserrat), Suwanose-jima (Japan), Tungurahua (Ecuador), Ubinas (Peru), Ulawan (Papua New Guinea).

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