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Smithsonian / USGS Weekly Volcanic Activity Report

You are currently viewing Archived reports for the week of 5 February-11 February 2014.


















 Activity for the week of 5 February-11 February 2014

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
Asosan Kyushu (Japan) New
Barren Island Andaman Islands (India) New
Karangetang Siau Island (Indonesia) New
Kelut Eastern Java (Indonesia) New
San Cristobal Nicaragua New
Shishaldin Fox Islands (USA) New
Tungurahua Ecuador New
Ubinas Peru New

Aira Kyushu (Japan) Ongoing
Chirinkotan Kuril Islands (Russia) Ongoing
Chirpoi Kuril Islands (Russia) Ongoing
Colima Mexico Ongoing
Dukono Halmahera (Indonesia) Ongoing
Etna Sicily (Italy) Ongoing
Karymsky Eastern Kamchatka (Russia) Ongoing
Kilauea Hawaiian Islands (USA) Ongoing
Rabaul New Britain (Papua New Guinea) Ongoing
Sheveluch Central Kamchatka (Russia) Ongoing
Sinabung Indonesia Ongoing


New Activity / Unrest


Volcano index photo  Asosan  | Kyushu (Japan)  | 32.884°N, 131.104°E  | Elevation 1592 m

According to a JMA report, volcanologists conducting a field survey of Asosan's Nakadake Crater on 5 February detected decreased sulfur dioxide emissions and fewer volcanic earthquakes. The Alert Level remained at 2 (on a scale of 1-5).

Source: Japan Meteorological Agency (JMA)



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

Based on analysis of satellite imagery and wind data, the Darwin VAAC reported that on 6 February an ash plume from Barren Island rose to an altitude of 1.5 km (5,000 ft) a.s.l. and drifted over 35 km SW. A SIGMET report noted that low-level ash plumes were also observed on 9 February.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)



Volcano index photo  Karangetang  | Siau Island (Indonesia)  | 2.781°N, 125.407°E  | Elevation 1797 m

Based on analyses of satellite imagery and wind data, the Darwin VAAC reported that on 9 February an ash plume from Karangetang rose to an altitude of 4.3 km (14,000 ft) a.s.l. and drifted over 80 km W.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)



Volcano index photo  Kelut  | Eastern Java (Indonesia)  | 7.93°S, 112.308°E  | Elevation 1731 m

PVMBG reported that during 3-10 February seismic activity at Kelut was dominated by both shallow and deep volcanic earthquakes; earthquake hypocenters were 3 km below the summit. RSAM values increased on 6 and 9 February. Inflation was detected at one station. Crater lake water temperatures increased since September 2013, particularly during 23 January-9 February. Temperatures decreased slightly on 10 February. Based on increased seismicity, inflation, and higher water temperatures, PVMBG increased the Alert Level to 3 (on a scale of 1-4) on 10 February. Visitors and residents were prohibited from approaching the crater within a 5-km radius.

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)



Volcano index photo  San Cristobal  | Nicaragua  | 12.702°N, 87.004°W  | Elevation 1745 m

INETER reported that a gas emission with small amounts of ash rose from San Cristóbal between 0641 and 0850 on 4 February. Although there was no increase noted, the report stated that seismicity decreased to background levels. By the afternoon sulfur dioxide emission values were 2,000-3,000 tonnes per day, the normal levels, and on 7 February they were 1,000 tonnes per day.

Source: Instituto Nicaragüense de Estudios Territoriales (INETER)



Volcano index photo  Shishaldin  | Fox Islands (USA)  | 54.756°N, 163.97°W  | Elevation 2857 m

AVO reported that elevated surface temperatures in Shishaldin's summit crater were detected in satellite images during 5-6 February. No unusual seismicity was detected by the nearest working station off the flanks of the volcano. A possible ash-poor gas cloud was detected in satellite images beginning at 0645 on 7 February that may have been from a small explosion, too small to be detected by the seismometer but coinciding with a local tiltmeter signal. Satellite image analysis suggested that the short-lived cloud may have risen to an altitude of 7.6 km (25,000 ft) a.s.l. Elevated surface temperatures were not detected after the event, so very little if any hot material was ejected. During 9-11 February elevated surface temperatures were detected in satellite images and a tiltmeter 5.4 km SW of the volcano recorded a small signal. Clear or partly clear web cam images showed no activity. The Aviation Color Code remained at Yellow and the Volcano Alert Level remained at Advisory.

Source: US Geological Survey Alaska Volcano Observatory (AVO)



Volcano index photo  Tungurahua  | Ecuador  | 1.467°S, 78.442°W  | Elevation 5023 m

On 6 February, IG reported that since 3 February Tungurahua had produced almost constant emissions of gas, steam, and ash that rose 3-4 km above the crater and drifted N, causing ashfall in Ambato (31 km N), Patate (NW), Latacunga, and parts of Quito (130 km N). During 5-6 February ash plumes drifted E and SE and caused ashfall in Pondoa (8 km N), Vazcún (N), Runtún (6 km NNE), and San Antonio, and to a lesser extent in Rio Verde and Rio Negro. Strombolian activity was observed on 6 February.

Cloud cover often prevented visual observations during 7-11 February; explosions continued to be detected, roaring was periodically heard, and sounds resembling rolling blocks were occasionally reported. On 7 February ash fell in Palictahua. The next day a gas-and-ash plume rose 500 m and drifted W and SW. On 9 February an ash plume rose 4 km and drifted NW and NE. Strombolian activity ejected blocks 1 km away. During 10-11 February explosions vibrated structures, and ashfall was reported in Quero (20 km NW), Mocha (25 km WNW), El Manzano (8 km SW), and Choglontus (SW).

Source: Instituto Geofísico-Escuela Politécnica Nacional (IG)



Volcano index photo  Ubinas  | Peru  | 16.355°S, 70.903°W  | Elevation 5672 m

IGP's Observatorio Volcanologico de Arequipa (IGP-OVA) reported that on 1 February at 1559 a gas-and-ash plume from Ubinas rose 0.5-2 km above the crater and drifted E and SE. A photo showed ash from the plume falling onto the flanks. The event was accompanied by increased seismicity for several hours. At 2027 on 7 February a large volcano-tectonic earthquake occurred under the volcano at a depth of 9 km. Bluish gas emissions were sporadic during 8-11 February.

Source: Instituto Geofísico del Perú (IGP)



Ongoing Activity


Volcano index photo  Aira  | Kyushu (Japan)  | 31.593°N, 130.657°E  | Elevation 1117 m

JMA reported that during 3-7 February five explosions from Sakurajima's Showa Crater ejected tephra as far as 1,300 m. Incandescence from the crater was detected at night. The Alert Level remained at 3 (on a scale of 1-5). The Tokyo VAAC reported explosions during 6, 8-9, and 11 February. On 8 February a pilot observed an ash plume drifting at an altitude of 2.1 km (7,000 ft) a.s.l. Ash plumes rose to an altitude of 1.8 km (6,000 ft) a.s.l. on 9 February and 2.1 (7,000 ft) a.s.l. on 11 February.

Sources: Japan Meteorological Agency (JMA), Tokyo Volcanic Ash Advisory Center (VAAC)



Volcano index photo  Chirinkotan  | Kuril Islands (Russia)  | 48.98°N, 153.48°E  | Elevation 724 m

SVERT reported that a thermal anomaly over Chirinkotan was observed in satellite images on 8 February, and steam-and-gas emissions were observed on 9 February. Cloud cover obscured views on other days during 4-10 February. The Aviation Color Code remained at Yellow.

Source: Sakhalin Volcanic Eruption Response Team (SVERT)



Volcano index photo  Chirpoi  | Kuril Islands (Russia)  | 46.532°N, 150.871°E  | Elevation 742 m

SVERT reported that a thermal anomaly over Snow, a volcano of Chirpoi, was detected in satellite images during 6 and 8-9 February. Cloud cover obscured views on other days during 4-10 February. The Aviation Color Code remained at Yellow.

Source: Sakhalin Volcanic Eruption Response Team (SVERT)



Volcano index photo  Colima  | Mexico  | 19.514°N, 103.62°W  | Elevation 3850 m

Based on observations of satellite images, the Washington VAAC reported that a small ash cloud from Colima drifted slowly E and then SE on 7 February; the slow drift was indicative of a low altitude. Another small puff of gas with low amounts of ash drifted SE.

Source: Washington Volcanic Ash Advisory Center (VAAC)



Volcano index photo  Dukono  | Halmahera (Indonesia)  | 1.693°N, 127.894°E  | Elevation 1229 m

Based on analyses of satellite imagery and wind data, the Darwin VAAC reported that during 5-6 February ash plumes from Dukono rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted 55 km S and SW. During 9-11 February ash plumes rose to altitudes of 2.1-4.3 km (7,000-14,000 ft) a.s.l. and drifted 40-90 km NW and NE.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)



Volcano index photo  Etna  | Sicily (Italy)  | 37.748°N, 14.999°E  | Elevation 3295 m

INGV reported that during 4-5 February activity at Etna's New Southeast Crater (NSEC) was characterized by intermittent ash emissions accompanied by jets of incandescent pyroclastic material, and a constant emission of lava from one or two vents at the E base of the NSEC cone. The lava flows reached the base of the W slope of the Valle del Bove. On 6 February ash emissions ceased and small Strombolian explosions ejected incandescent pyroclastic material 100 m above the crater. On 7 February Strombolian explosions ejected material onto the flanks of the cone, and the next day ash puffs were observed. During 9-11 February activity continued to be characterized by Strombolian activity, periodic ash emissions, and advancing lava flows. At 0707 on 11 February a large quantity of reddish brown ash emitted from an area near the vents formed a very dense hot flow which quickly reached the base of the W wall of the Valle del Bove. Reddish brown ash emissions continued after the event.

Source: Sezione di Catania - Osservatorio Etneo (INGV)



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

KVERT reported that Vulcanian and Strombolian activity at Karymsky continued during 31 January-7 February. Satellite images detected a bright thermal anomaly on 1 February; cloud cover obscured views of the volcano on the other days. Ash plumes drifted 80 km E during 1-2 February. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)



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

During 5-11 February HVO reported that the circulating lava lake occasionally rose and fell in the deep pit within Kilauea's Halema'uma'u Crater. The plume from the vent continued to deposit variable amounts of ash, spatter, and Pele's hair onto nearby areas. At Pu'u 'O'o Crater, glow emanated from spatter cones on the N and S portions of the crater floor, and a lava pond was active in the NE spatter cone. The 7.8-km-long Kahauale’a 2 lava flow (based on a satellite image from 2 February), fed by the NE spatter cone, was active with scattered break-out flows 4.8 and 6.9 km NE of Pu'u 'O'o that burned the forest.

Source: US Geological Survey Hawaiian Volcano Observatory (HVO)



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

RVO reported that Rabaul caldera's Tavurvur cone was quiet during 26 January-11 February. A pale gray/brown plume rose 50-100 m above the vent and dispersed on 12 February.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)



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

KVERT reported that during 31 January-7 February a newer lava dome continued to extrude onto the NW part of Shiveluch's older lava dome. Lava-dome extrusion was accompanied by hot avalanches, incandescence, and fumarolic activity. A thermal anomaly was detected in satellite images during 3-4 February. Based on interpretation of seismic data, a large explosion that started at 1245 on 6 February and ended at 0440 on 7 February generated an ash plume that rose to altitudes of 9-10 km (29,500-32,800) a.s.l. A satellite image acquired at 0705 on 7 February showed a large ash cloud (240 x 180 km) over the Sea of Okhotsk 320 km WNW at an altitude of 4-5 km (13,100-16,400) a.s.l. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)



Volcano index photo  Sinabung  | Indonesia  | 3.17°N, 98.392°E  | Elevation 2460 m

Based on reports from PVMBG, BNPB reported on 8 and 9 February that seismicity at Sinabung continued to be dominated by hybrid earthquakes, indicating pressure below the crater and a growing lava dome. Earthquakes associated with avalanches increased. The 9 February report noted that the number of displaced people reached 32,351 (9,991 families) in 42 evacuation centers. Refugees from 17 villages outside the 5-km radius were allowed to return to their homes, starting with four villages during the first phase.

Source: Badan Nacional Penanggulangan Bencana (BNPB)



Weekly Reports Archive

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Chikurachki Kasatochi Osorno Tangkubanparahu
Chiles-Cerro Negro Katla Pacaya Tara, Batu
Chillan, Nevados de Kavachi Pagan Telica
Chirinkotan Kelimutu Palena Volcanic Group Tenerife
Chirpoi Kelut Paluweh Tengger Caldera
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Concepcion Kick 'em Jenny Pavlof Tokachidake
Copahue Kikai Peuet Sague Tolbachik
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Dempo Kolokol Group Puyehue-Cordon Caulle Ubinas
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Dieng Volcanic Complex Koryaksky Raikoke Unknown Source
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Fogo Leroboleng Ruiz, Nevado del Zubair Group
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Fourpeaked Little Sitkin Salak
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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.

5. USGS Disclaimer Statement for this Website:

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.

Some of the documents on this server may contain live references (or pointers) to information created and maintained by other organizations. Please note that USGS does not control and cannot guarantee the relevance, timeliness, or accuracy of these outside materials.

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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)