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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
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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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Eruptive activity at San Cristóbal, Nicaragua 22 November 2008

Posted by admin in activity reports, eruptions, Nicaragua, San Cristóbal.
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Yesterday San Cristóbal volcano in Nicaragua was reported to be showing ‘slightly elevated eruptive activity’, with ‘small explosions’ in its crater and earthquakes with magnitudes between 3.5 and 4.0. Nicaragua’s volcanological authority, INETER, describes this activity as ‘a normal part of the volcano’s behaviour in recent years’ which ‘at the moment poses no imminent danger to the population’.

A report in Nicaragua’s El Nuevo Diario says that the explosions ‘hurled ash and volcanic gases’ at towns and villages south of the volcano. There are no reports of damage or injuries, however.

Elevated seismicity is reported to have been registered at San Cristóbal for the last week.

News
Erupción en volcán San Cristóbal en noroeste de NicaraguaEl Nuevo Diario, 21 November 2008
El volcán San Cristóbal de Nicaragua registra pequeñas explosiones en cráterABC Digital, 22 November 2008
Lanza ceniza y humo volcan San Cristobal en NicaraguaEl Financiero, 22 November 2008
Volcano erupts in Nicaragua with small quakes – Associated Press, 22 November 2008

Information
Global Volcanism Program: San Cristóbal – information about San Cristóbal (1404-02=)
Instituto Nicaragüense de Estudios Territoriales – INETER main page
INETER Comunicados Oficiales – INETER volcano bulletins

The Volcanism Blog

Nicaraguan volcanoes and life on Mars 29 September 2008

Posted by admin in Cerro Negro, current research, Mars, Nicaragua, solar system.
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‘Although volcanoes on Mars today are dormant or extinct’, says the summary of this Astrobiology Magazine story, ‘in the distant past the Red Planet was literally a hotbed of volcanic activity’. Yes, literally a hotbed. ‘Cerro Negro, an active volcano in Nicaragua, offers clues to what the martian era of fire and brimstone may have been like – and what types of organisms could have lived in that superheated world’.

It seems Cerro Negro, the youngest volcano in Central America (born April 1850), offers Martian-type basalts that can provide terrestrial analogs to possible conditions in and around the volcanoes of Mars back in the ‘martian era of fire and brimstone’. To find out more, take a look at ‘Nicaraguan volcano provides insight into early Mars’ at Astrobio.net.

The Volcanism Blog

Geothermal power from volcanoes 25 June 2008

Posted by admin in Alaska, Augustine, Nicaragua, San Cristóbal, Spurr, United States, volcanic resources.
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Reuters reports that the State of Alaska is preparing a geothermal leasing programme for Mount Spurr which would allow energy companies to exploit the volcano’s heat sources as a means of generating energy, and that a similar programme is being considered for another Alaskan volcano, Augustine. The Eruptions blog has more.

Only last week Nicaragua announced that it was inviting bids to develop the geothermal potential of San Cristóbal volcano.

An article in the UK Daily Telegraph for 26 June 2008 reports on the resurgence of interest in geothermal power in the United States: ‘According to experts, America is only just waking up to the ancient power source lying beneath dozens of states that has the potential to supply as much as 25 percent of the nation’s energy needs’. If the Telegraph is to be believed, Karl Gawell, executive director of the Geothermal Energy Association, when speaking of current geothermal energy projects and the potential for expansion, actually used the phrase ‘the tip of the iceberg’.

Information
Global Volcanism Program: Spurr – summary information for Spurr (1103-04-)
Global Volcanism Program: Augustine – summary information for Augustine (1103-01-)
Global Volcanism Program: San Cristóbal – summary information for San Cristóbal (1404-02=)
The plus side of volcanoes: geothermal energy – general information on geothermal energy from the Cascades Volcano Observatory

News
Harness volcano power, energy experts sayDaily Telegraph, 26 June 2008
Alaska plans geothermal leasing at volcano – Reuters, 24 June 2008
Nicaragua seeks bids on energy from largest volcano – Bloomberg, 19 June 2008

The Volcanism Blog

Masaya, Nicaragua: explosion reported 19 June 2008

Posted by admin in activity reports, Masaya, Nicaragua.
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Nicaragua’s Instituto Nicaragüense de Estudios Territoriales (INETER) reported on 18 June 2008 that an ‘explosion’ took place in the crater of Masaya volcano at 16:50 local time on that date, resulting in the release of ‘gases and volcanic ash in moderate amounts’. A dark eruption cloud was observed by people in the Masaya Volcano National Park.

Masaya, a 6x11km caldera, is one of the most active volcanoes in Nicaragua. Unusually for a basaltic volcano it has had explosive eruptions, including, in 4550BC, one of the largest of the past 10,000 years (VEI=5). Long-lasting periods of gas emission from Masaya, with sulphur dioxide being released at rates of more than 1000 tonnes per day, cause localized health hazards and crop damage.

Information
Global Volcanism Program: Masaya – summary information for Masaya (1404-10=)
Instituto Nicaragüense de Estudios Territoriales – INETER main page
INETER Comunicados Oficiales – INETER volcano bulletins

News
Científicos de INETER en volcán Masaya – news release from the Nicaraguan President’s office, 19 June 2008

The Volcanism Blog

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