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Smithsonian / USGS Weekly Volcanic Activity Report

You are currently viewing Archived reports for the week of 12 November-18 November 2008.


















 Activity for the week of 12 November-18 November 2008

The Weekly Volcanic Activity Report is a cooperative project between the Smithsonian's Global Volcanism Program and the US Geological Survey's Volcano Hazards Program. Updated by 2300 UTC every Wednesday, notices of volcanic activity posted on these pages are preliminary and subject to change as events are studied in more detail. This is not a comprehensive list of all of Earth's volcanoes erupting during the week, but rather a summary of activity at volcanoes that meet criteria discussed in detail in the "Criteria and Disclaimers" section. Carefully reviewed, detailed reports on various volcanoes are published monthly in the Bulletin of the Global Volcanism Network.

Name Location Activity
Akan Hokkaido (Japan) New
Barren Island Andaman Islands (India) New
Nevado del Huila Colombia New
Reventador Ecuador New

Chaiten Chile Ongoing
Karymsky Eastern Kamchatka (Russia) Ongoing
Kilauea Hawaiian Islands (USA) Ongoing
Klyuchevskoy Central Kamchatka (Russia) Ongoing
Popocatepetl Mexico Ongoing
Rabaul New Britain (Papua New Guinea) Ongoing
Santa Maria Guatemala Ongoing
Sheveluch Central Kamchatka (Russia) Ongoing
Soufriere Hills Montserrat Ongoing
Suwanosejima Ryukyu Islands (Japan) Ongoing


New Activity / Unrest


Volcano index photo  Akan  | Hokkaido (Japan)  | 43.384°N, 144.013°E  | Elevation 1499 m

On 17 November, JMA raised the Alert Level for Me-Akan (also known as Meakan-dake, which means Meakan Peak) of the Akan volcanic complex to "near-crater warning" (levels 2 and 3 on a 5-level scale) after the seismic network detected tremor that lasted 171 minutes. On 18 November, the summit was obscured by cloud cover but web camera views showed that the snow-covered S slopes had turned black. During an overflight later that day, JMA scientists noted that the ash covered an area up to 400 m away from Ponmachineshiri crater. Ballistic lithics several tens of centimeters in diameter were deposited around the crater.

Source: Japan Meteorological Agency (JMA)



Volcano index photo  Barren Island  | Andaman Islands (India)  | 12.278°N, 93.858°E  | Elevation 354 m

Based on a pilot observation, the Darwin VAAC reported a lava flow from Barren Island on 17 November. A possible low-level ash plume was seen drifting W on satellite imagery. On 18 November, a pilot reported that an ash plume rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted WSW.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)



Volcano index photo  Nevado del Huila  | Colombia  | 2.93°N, 76.03°W  | Elevation 5364 m

The Washington VAAC reported that on 11 November occasional emissions of gas and possible ash from Nevado del Huila were observed on satellite imagery. During 12-18 November, INGEOMINAS continued to receive reports of strong sulfur odors and ashfall in areas to the W and SW. They also noted that 14 instances of ash emissions were detected on satellite imagery during 13-14 November. Sulfur dioxide plumes were also detected on satellite imagery. According to the Washington VAAC, a pilot observed an ash plume on 14 November that rose to an altitude of 6.1 km (20,000 ft) a.s.l. and drifted SW. News articles stated that classes at educational institutions near the Páez and Símbola rivers were suspended while the Alert Level remained at Orange.

Sources: Servicio Geológico Colombiano (SGC), Washington Volcanic Ash Advisory Center (VAAC), El Liberal



Volcano index photo  Reventador  | Ecuador  | 0.077°S, 77.656°W  | Elevation 3562 m

The IG reported that slight incandescence from Reventador's crater was seen at night during 11-12 November. Inclement weather prevented observations during 13-16 November. On 17 and 18 November, a seismic station situated on the NE flank of the central cone recorded a high number of rockfall signals that presumably originated from the active lava-flow fronts. Steam emissions rose from the crater.

Source: Instituto Geofísico-Escuela Politécnica Nacional (IG)



Ongoing Activity


Volcano index photo  Chaiten  | Chile  | 42.833°S, 72.646°W  | Elevation 1122 m

Based on observations of satellite imagery, SIGMET notices, and web camera views, the Buenos Aires VAAC reported that during 12-17 November ash plumes from Chaitén continuously rose to altitudes 1.4-3.7 km (4,500-12,000 ft) a.s.l. and drifted NW, NNE, ENE, and E. A thermal anomaly was detected on satellite imagery on 12 November.

Source: Buenos Aires Volcanic Ash Advisory Center (VAAC)



Volcano index photo  Karymsky  | Eastern Kamchatka (Russia)  | 54.049°N, 159.443°E  | Elevation 1513 m

KVERT reported that seismic activity at Karymsky increased above background levels during 11-12 November. On 10 November, ash plumes were seen on satellite imagery drifting 38 km E and 28 km ENE. During 10-11 November, possible explosions may have generated ash plumes to an altitude of 3.8 km (12,500 ft) a.s.l. Also during 10-11 November, analysis of satellite imagery revealed a thermal anomaly in the crater; clouds prevented observations on the other days. The Level of Concern Color Code remained at Orange.

Based on analysis of satellite imagery, information from the Yelizovo Airport (UHPP), and KEMSD notices, the Tokyo VAAC reported that an ash plume rose to an altitude of 2.7 km (9,000 ft) a.s.l. on 12 November. On 12 and 15 November, eruptions generated plumes that rose to an altitude of 3.4 km (11,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT), Tokyo Volcanic Ash Advisory Center (VAAC)



Volcano index photo  Kilauea  | Hawaiian Islands (USA)  | 19.421°N, 155.287°W  | Elevation 1222 m

HVO reported that during 12-18 November lava flowed SE through a tube system from underneath Kilauea's Thanksgiving Eve Breakout (TEB) and rootless shield complex, reaching the Waikupanaha ocean entry. Incandescence and active surface flows were seen on and at the base of the pali (fault scarp). Earthquakes were variously located beneath and to the S of the caldera, and along the S-flank fault. Beneath Halema'uma'u crater daily earthquakes ranged from 20 to 40 (background is about 40), but were too small to be located more precisely. The vent in Halema'uma'u crater continued to produce a predominantly white plume that drifted mainly SW and deposited small amounts of tephra. Night-time incandescence was seen at the base of the plume on the web camera for the first time in about a month, and sounds resembling distant surf and rockfalls were heard in the vicinity of the crater. The sulfur dioxide emission rate was 1,200 and 800 tonnes per day on 14 and 17 November, respectively; the 2003-2007 rate average was 140 tonnes per day.

Source: US Geological Survey Hawaiian Volcano Observatory (HVO)



Volcano index photo  Klyuchevskoy  | Central Kamchatka (Russia)  | 56.056°N, 160.642°E  | Elevation 4754 m

KVERT reported that seismic activity at Kliuchevskoi was above background levels during 7-13 November. Video and visual observations showed that during 8 and 10-12 November gas-and-steam plumes that contained a small amount of ash rose to an altitude of 5.1 km (16,700 ft) a.s.l. Analysis of satellite imagery revealed a daily thermal anomaly in the crater. The Level of Concern Color Code remained Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)



Volcano index photo  Popocatepetl  | Mexico  | 19.023°N, 98.622°W  | Elevation 5393 m

CENAPRED reported that emissions of steam and gas from Popocatépetl were visible during 12-18 November. Based on analysis of satellite imagery and information from the Mexico City MWO, the Washington VAAC reported that on 17 November an ash plume rose to an altitude of 6.1 km (20,000 ft) a.s.l. and drifted NW and WSW. A thermal anomaly was also detected. According to CENAPRED, the emissions contained slight amounts of ash on 18 November.

Sources: Centro Nacional de Prevencion de Desastres (CENAPRED), Washington Volcanic Ash Advisory Center (VAAC)



Volcano index photo  Rabaul  | New Britain (Papua New Guinea)  | 4.271°S, 152.203°E  | Elevation 688 m

Based on analysis of satellite imagery, the Darwin VAAC reported that during 12 and 16-18 November ash plumes from Rabaul caldera's Tavurvur cone rose to altitudes of 2.4-3 km (8,000-10,000 ft) a.s.l. and drifted NW and NNW.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)



Volcano index photo  Santa Maria  | Guatemala  | 14.757°N, 91.552°W  | Elevation 3745 m

Based on analysis of satellite imagery, the Washington VAAC reported that ash puffs from Santa María's Santiaguito lava dome complex drifted SW on 11 and 15 November.

Source: Washington Volcanic Ash Advisory Center (VAAC)



Volcano index photo  Sheveluch  | Central Kamchatka (Russia)  | 56.653°N, 161.36°E  | Elevation 3283 m

KVERT reported that seismic activity at Shiveluch was above background levels during 6-14 November. Based on interpretations of seismic data, ash plumes rose to an altitude of 6.8 km (22,300 ft) a.s.l. Hot avalanches descended the lava dome on 6 November and produced ash plumes that rose to an altitude of 4 km (13,100 ft) a.s.l. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome. On 10 November, an ash plume drifted 30 km E and gas-and-steam plumes drifted 50 km. The Level of Concern Color Code remained at Orange. Fumarolic activity was visible on the web camera on 8, 10, and 12 November.

Based on information from KEMSD and analysis of satellite imagery, the Tokyo VAAC reported that on 13 and 16 November eruptions produced plumes to altitudes of 4.9-6.1 km (16,000-20,000 ft) a.s.l.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT), Tokyo Volcanic Ash Advisory Center (VAAC)



Volcano index photo  Soufriere Hills  | Montserrat  | 16.72°N, 62.18°W  | Elevation 915 m

MVO reported that during 7-14 November the activity level at the Soufrière Hills lava dome increased slightly, but remained low, and there was no evidence of lava extrusion. Rockfalls were detected by the seismic network. Visual observations were hindered by clouds and vigorous steaming from the dome. Weak ash venting possibly occurred briefly on 13 November. The Hazard Level remained at 3.

Source: Montserrat Volcano Observatory (MVO)



Volcano index photo  Suwanosejima  | Ryukyu Islands (Japan)  | 29.638°N, 129.714°E  | Elevation 796 m

Based on analysis of satellite imagery and information from JMA, the Tokyo VAAC reported multiple explosions or eruptions from Suwanose-jima during 12-16 November. Occasional plumes rose to altitudes of 1.5-2.1 km (5,000-7,000 ft) a.s.l. during 13-15 November.

Source: Tokyo Volcanic Ash Advisory Center (VAAC)



Weekly Reports Archive

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Bardarbunga Ibu Monowai Soufriere Hills
Barren Island Ijen Montagu Island Soufriere St. Vincent
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Bezymianny Iliwerung Mutnovsky Spurr
Bogoslof Inielika Myojinsho St. Helens
Brava Ioto Nabro Stromboli
Bristol Island Iya Negra, Sierra Sulu Range
Bulusan Izu-Torishima Negro, Cerro Sumbing
Calbuco Jackson Segment Nightingale Island Sundoro
Callaqui Kaba Nishinoshima Suretamatai
Cameroon Kadovar Nisyros Suwanosejima
Campi Flegrei del Mar di Sicilia Kambalny Novarupta Taal
Cayambe Kanaga NW Rota-1 Tair, Jebel at
Cereme Kanlaon Nyamuragira Takawangha
Chachadake [Tiatia] Karangetang Nyiragongo Talang
Chaiten Karkar Okataina Tambora
Chiginagak Karthala Okmok Tanaga
Chikurachki Karymsky Ontakesan Tandikat-Singgalang
Chiles-Cerro Negro Kasatochi Oraefajokull Tangkoko-Duasudara
Chillan, Nevados de Katla Osorno Tangkubanparahu
Chirinkotan Kavachi Pacaya Tara, Batu
Chirpoi Kelimutu Pagan Telica
Cleveland Kelut Palena Volcanic Group Tenerife
Colima Kerinci Paluweh Tengger Caldera
Colo Ketoi Panarea Three Sisters
Concepcion Kharimkotan Papandayan Tinakula
Copahue Kick 'em Jenny Parker Tofua
Cotopaxi Kikai Pavlof Tokachidake
Cuicocha Kilauea Peuet Sague Tolbachik
Cumbal Kirishimayama Pinatubo Toliman
Dabbahu Kizimen Planchon-Peteroa Tongariro
Dempo Klyuchevskoy Poas Tungurahua
Descabezado Grande Kolokol Group Popocatepetl Turrialba
Dieng Volcanic Complex Korovin Puyehue-Cordon Caulle Ubinas
Dukono Koryaksky Rabaul Ulawun
Ebeko Krakatau Ranakah Unknown Source
Ebulobo Krummel-Garbuna-Welcker Raoul Island Unnamed
Egon Kuchinoerabujima Rasshua Veniaminof
Ekarma Kurikomayama Raung Villarrica
Epi Kusatsu-Shiranesan Redoubt West Mata
Erebus Kverkfjoll Reventador White Island
Erta Ale Lamington Rincon de la Vieja Witori
Etna Lamongan Rinjani Wolf
Etorofu-Yakeyama [Grozny Group] Langila Ritter Island Yasur
Eyjafjallajokull Lanin Rotorua Zaozan
Fernandina Lascar Ruang Zavodovski
Fogo Lengai, Ol Doinyo Ruapehu Zhupanovsky
Fonualei Leroboleng Ruiz, Nevado del Zubair Group
Fournaise, Piton de la Lewotobi Sabancaya
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 News Feeds and Google Placemarks


The RSS (Really Simple Syndication) feed is identical to the Weekly Volcanic Activity Report minus some features including the header information (latitude and longitude and summit elevation), the Geologic Summary, and a link to the volcano's page from the Global Volcanism Program. Each volcano report includes a link from the volcano's name back to the more complete information in the Weekly Volcanic Activity Report on the Smithsonian website.




The CAP (Common Alerting Protocol) feeds are XML files specifically formatted for disaster management. They are similar in content to the RSS feed, but contain no active links.




A Google Earth network link for the Weekly Volcanic Activity Report can be loaded into the free Google Earth software, and in turn will load placemarks for volcanoes in the current weekly report. Placemark balloons include the volcano name, report date, report text, sources, and links back to the GVP volcano page for that volcano and to the complete Weekly Report for that week.

 Criteria & Disclaimers

Criteria

The Weekly Volcanic Activity Report does not necessarily include all volcanic activity that occurred on Earth during the week. More than a dozen volcanoes globally have displayed more-or-less continuous eruptive activity for decades or longer, and such routine activity is typically not reported here. Moreover, Earth's sea-floor volcanism is seldom reported even though in theory it represents the single most prolific source of erupted material. The Weekly Volcanic Activity Report summarizes volcanic activity that meets one or more of the following criteria:

- A volcano observatory raises or lowers the alert level at the volcano.
- A volcanic ash advisory has been released by a volcanic ash advisory center (VAAC) stating that an ash cloud has been produced from the volcano.
- A verifiable news report of new activity or a change in activity at the volcano has been issued.
- Observers have reported a significant change in volcanic activity. Such activity can include, but is not restricted to, pyroclastic flows, lahars, lava flows, dome collapse, or increased unrest.

Volcanoes are included in the "New Activity/Unrest" section of the Weekly Volcanic Activity Report if the activity occurs after at least 3 months of quiescence. Once a volcano is included in the "New Activity/Unrest" section, updates will remain in that section unless the activity continues for more than 1 month without escalating, after which time updates will be listed in the "Continuing Activity" section. Volcanoes are also included in the "New Activity/Unrest" section if the volcano is undergoing a period of relatively high unrest, or increasing unrest. This is commonly equal to Alert Level Orange on a scale of Green, Yellow, Orange, Red, where Red is the highest alert. Or alert level 3 on a scale of 1-4 or 1-5.

It is important to note that volcanic activity meeting one or more of these criteria may occur during the week, but may not be included in the Weekly Volcanic Activity Report because we did not receive a report.


Disclaimers

1. The Weekly Volcanic Activity Report is intended to provide timely information about global volcanism on a weekly basis. Consequently, the report is generated rapidly by summarizing volcanic reports from various sources, with little time for fact checking. The accuracy of the Weekly Volcanic Activity Report is dependent upon the quality of the volcanic activity reports we receive. Reports published in the Bulletin of the Global Volcanism Network are monthly, and more carefully reviewed, although all of the volcanoes discussed in the Weekly Volcanic Activity Report are not necessarily reported in the Bulletin. Because of our emphasis on rapid reporting on the web we have avoided diacritical marks. Reports are updated on the Weekly Volcanic Activity Report web page as they are received, therefore information may be included regarding events that occurred before the current report period.

2. Rapidly developing events lead to coverage that is often fragmentary. Volcanoes, their eruptions, and their plumes and associated atmospheric effects are complex phenomena that may require months to years of data analysis in order to create a comprehensive summary and interpretation of events.

3. Preliminary accounts sometimes contain exaggerations and "false alarms," and accordingly, this report may include some events ultimately found to be erroneous or misleading.

4. Many news agencies do not archive the articles they post on the Internet, and therefore the links to some sources may not be active. To obtain information about the cited articles that are no longer available on the Internet contact the source.

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Information presented on this website is considered public information and may be distributed or copied. Use of appropriate byline/photo/image credit is requested. We strongly recommend that USGS data be acquired directly from a USGS server and not through other sources that may change the data in some way. While USGS makes every effort to provide accurate and complete information, various data such as names, telephone numbers, etc. may change prior to updating. USGS welcomes suggestions on how to improve our home page and correct errors. USGS provides no warranty, expressed or implied, as to the accuracy, reliability or completeness of furnished data.

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RSS and CAP Feeds

An RSS (Really Simple Syndication) feed for the Weekly Volcanic Activity Report first made available on 5 March 2008 can be utilized with the aid of various free downloadable readers. The report content of the news feed is identical to the Weekly Volcanic Activity Report minus some features including the header information (latitude and longitude and summit elevation), the Geologic Summary, and a link to the volcano's page from the Global Volcanism Program. Each volcano report includes a link from the volcano's name back to the more complete information in the Weekly Volcanic Activity Report on the Smithsonian website. On 12 March 2009, GeoRSS tags were added so that the latitude and longitude for each volcano could be included with the feed.

At the end of each individual report is a list of the sources used. We would like to emphasize that the World Organization of Volcano Observatories (WOVO) website (http://www.wovo.org/) lists the regional volcano observatories that have the most authoritative data for many of these events.

CAP (Common Alerting Protocol) feeds are XML files specifically formatted for disaster management.


Google Earth Placemarks

A Google Earth network link for the Weekly Volcanic Activity Report was first made available on 1 April 2009. This file can be loaded into the free Google Earth software, and in turn will load placemarks for volcanoes in the current weekly report. Placemark balloons include the volcano name, report date, report text, sources, and links back to the GVP volcano page for that volcano and to the complete Weekly Report for that week.

 Acronyms and Abbreviations

a.s.l. - above sea level

AVO - Alaska Volcano Observatory

AVHRR - Advanced Very High Resolution Radiometer

CENAPRED - Centro Nacionale de Prevencion de Desastres (México)

CONRED - Coordinadora Nacional para la Reducción de Desastres

COSPEC - Correlation Spectrometer

CVGHM (formerly VSI) - Center of Volcanology and Geological Hazard Mitigation

CVO - Cascades Volcano Observatory (USGS)

GMS - Geostationary Meteorological Satellite

GOES - Geostationary Operational Environmental Satellite

GVO - Goma Volcano Observatory

GVP - Global Volcanism Program (Smithsonian Institution)

HVO - Hawaiian Volcano Observatory (USGS)

ICE - Instituto Costarricense de Electricidad (Costa Rica)

IG - Instituto Geofísico (Ecuador)

IGNS - Institute of Geological and Nuclear Sciences (New Zealand) - now GNS Science

INETER - Instituto Nicaragüense de Estudios Territoriales (Nicaragua)

INGEMMET - Instituto Geológical Minero y Metalúrgico (Peru)

INGEOMINAS - Instituto Colombiano de Geología y Minería (Colombia)

INGV-CT - Istituto Nazionale di Geofisica e Vulcanologia - Sezione di Catania (Italy)

INSIVUMEH - Instituto Nacional de Sismologia, Vulcanologia, Meteorologia e Hidrologia (Guatemala)

IRD - Institut de Recherche pour le Développement (France)

JMA - Japanese Meteorological Agency

KEMSD - Kamchatkan Experimental and Methodical Seismilogical Department

KVERT - Kamchatkan Volcanic Eruption Response Team

M - magnitude

METEOSAT - Meteorological Satellite

MEVO - Mount Erebus Volcano Observatory

MODIS - Moderate Resolution Imaging Spectroradiometer

MVO - Montserrat Volcano Observatory

MWO - Meteorological Watch Office

NEIC - National Earthquake Information Center

NIED - National Research Institute for Earth Science and Disaster Prevention (Japan)

NOAA - National Oceanic and Atmospheric Administration

NOTAM - Notice to Airmen

OVDAS - Observatorio Volcanologico de los Andes del Sur (Chile)

OFDA - Office of US Foreign Disaster Assistance

ONEMI - Oficina Nacional de Emergencia - Ministerio del Interior (Chile)

OVPDLF - Observatoire Volcanologique du Piton de la Fournaise (France)

OVSICORI-UNA - Observatorio Vulcanologico y Sismologico de Costa Rica, Universidad Nacional (Costa Rica)

PHIVOLCS - Philippine Institute of Volcanology and Seismology (Philippines)

RSAM - Real-time Seismic Amplitude Measurement

RVO - Rabaul Volcano Observatory

SERNAGEOMIN - Servicio Nacional de Geologia y Mineria (Chile)

SIGMET - Significant Meteorological Information

SNET - Servicio Nacional de Estudios Territoriales (El Salvador)

SVERT - Sakhalin Volcanic Eruption Response Team (Russia)

USAID - US Agency for International Development

USGS - United States Geological Survey

UTC - Coordinated Universal Time

VAAC - Volcanic Ash Advisory Center

VAFTAD - Volcanic Ash Forecast Transport And Dispersion

VDAP - Volcano Disaster Assistance Program (USGS)

VHP - Volcano Hazards Program (USGS)

VRC - Volcano Research Center (Japan)