Activity for the week of 20 November-26 November 2013
Smithsonian / USGS Weekly Volcanic Activity Report
You are currently viewing Archived reports for the week of 20 November-26 November 2013.
You are currently viewing Archived reports for the week of 20 November-26 November 2013.
Activity for the week of 20 November-26 November 2013
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.
|Klyuchevskoy||Central Kamchatka (Russia)||New|
|Chirinkotan||Kuril Islands (Russia)||Ongoing|
|Chirpoi||Kuril Islands (Russia)||Ongoing|
|Copahue||Central Chile-Argentina border||Ongoing|
|Karymsky||Eastern Kamchatka (Russia)||Ongoing|
|Kilauea||Hawaiian Islands (USA)||Ongoing|
|Sheveluch||Central Kamchatka (Russia)||Ongoing|
|Ulawun||New Britain (Papua New Guinea)||Ongoing|
Etna | Sicily (Italy) | 37.748°N, 14.999°E | Elevation 3295 m
INGV reported on the morning of 23 November the 17th paroxysm occurred from Etna’s New Southeast Crater (NSEC), five days after the previous one. The episode was characterized by a rapid evolution from Strombolian activity to lava fountains, an ash plume that rose several kilometers and drifted NE, and lava flows that were significantly less extensive than those emitted during the 16-17 November paroxysm.
Klyuchevskoy | Central Kamchatka (Russia) | 56.056°N, 160.642°E | Elevation 4754 m
KVERT reported that at 1235 on 17 November an ash plume from Kliuchevskoi, detected in satellite images, rose to an altitude of 6.5 km (19,700 ft) a.s.l. and drifted 160 km NE. At 1322 an ash plume rose to an altitude of 7km (23,000 ft) a.s.l. and drifted 130 km NE. Video data then showed a high-intensity explosion and Strombolian activity prompting KVERT to raise the Aviation Color Code to Orange.
At 1416 on 19 November seismicity indicated a strong explosion, and observers reported that ash plumes rose to altitudes of 10-12 km (32,800-39,400 ft) a.s.l. and drifted SE. The Aviation Color Code was raised to Red. Later that day the altitudes of the ash plumes were lower; video images showed ash plumes rising to altitudes of 5-5.5 km(16,400-18,000 ft) a.s.l. and drifting NE. The Aviation Color Code was lowered to Orange.
Nishinoshima | Japan | 27.247°N, 140.874°E | Elevation 25 m
The Japanese Coast Guard reported that a Surtseyan eruption 500 m SE from the coast of Nishimo-shima generated a new island called Niijima on 20 November. The island was about 300 x 200 m, and developed a crater 150m wide. Discolored water surrounded the island. Based on satellite images, as well as accounts from the Japanese Coast Guard and JMA, the Tokyo VAAC reported that a plume rose 600 m. On 22 November the eruption continued and incandescence within the crater was observed. An ash plume rose 900 m and drifted SE. On 24 November lava flows from the crater extended to the coastline of the island, and bombs continued to be ejected.
Sinabung | Indonesia | 3.17°N, 98.392°E | Elevation 2460 m
PVMBG reported three explosions from Sinabung on 17 November. The first explosion, at 2024, generated an ash plume that rose 500 m and drifted SW, and a pyroclastic flow that traveled 500 m down the SE flank. At 2152 a dense ash plume from an explosion rose 500 m and drifted SW. Incandescent material was ejected 50 m away from the crater. At 2252 an ash plume rose 1 km and drifted SW. At 0704 on 18 November an explosion generated an ash plume that rose 8 km and drifted SW. A pyroclastic flow also traveled 800 m down the SE flank.
On 19 November at 2155 a dense ash plume rose 10 km, drifted SW, and exhibited lightning. Pyroclastic flows again traveled 500 m SE. Multiple explosions on 20 November (at 0240, 0405, 0529, 0619, and 0641) generated ash plumes that rose to heights between 1 and 3.5 km. An explosion at 1716 was detected by the seismic network but cloud cover prevented observations of possible plumes. White plumes rose 100 m on 21 and 23 November; misty conditions prevented visual observations on 22 November. On 23 November scoria fell in the Sigarang-garang and Desa Kuta villages in the NNE. Two explosions on 24 November, at 0043 and 0232, were detected but not visually observed. Ash plumes rose 8 km and drifted NNE at 0727, rose 1 km at 0812, and rose 3 km at 0855. Since Sinabung's activity continued to increase, PVMBG raised the Alert Level to 4 (on a scale of 1-4) on 24 November. PVMBG noted that residents and tourists were not to approach the crater within a 5-km radius, and that remaining residents in 17 villages around the volcano were to be evacuated. On 25 November Badan Nacional Penanggulangan Bencana (BNPB) reported that 17,713 people, out of the 20,270 residents living within 5 km, had been evacuated to 31 shelters.
Aira | Kyushu (Japan) | 31.593°N, 130.657°E | Elevation 1117 m
JMA reported that five explosions from Sakura-jima's Showa Crater ejected tephra as far as 800 m during 18-22 November. Incandescence was occasionally detected by a high resolution camera at night. A very small eruption from Minami-dake Crater occurred on 22 November, producing an ash plume that rose 100 m. The Alert Level remained at 3 (on a scale of 1-5).
The Tokyo VAAC reported that during 20-21 and 23-26 November, explosions generated plumes that rose to altitudes of 1.2-4.9 km (4,000-16,000 ft) a.s.l. and drifted N, E, and SE.
Chirinkotan | Kuril Islands (Russia) | 48.98°N, 153.48°E | Elevation 724 m
Chirpoi | Kuril Islands (Russia) | 46.532°N, 150.871°E | Elevation 742 m
Copahue | Central Chile-Argentina border | 37.856°S, 71.183°W | Elevation 2953 m
Based on satellite images, the Buenos Aires VAAC reported that on 21 November a 5-km-wide steam plume possibly containing ash extended over 35 km SE of Copahue. A few hours later the webcam recorded a possible ash plume drifting SE at low altitudes.
Fuego | Guatemala | 14.473°N, 90.88°W | Elevation 3763 m
On 21 November INSIVUMEH reported that a recent Strombolian phase at Fuego decreased in intensity. Explosions generated ash plumes that rose 450 m and drifted W and SW. Ashfall was reported in Sangre de Cristo (8 km WSW). During 21-22 November explosions produced ash plumes that rose 450 m and drifted 7 km WNW, as well as loud rumbling sounds heard within 15 km. Lava flows were 300 m long in the Ceniza drainage (SSW). During 25-26 November ash plume from explosions rose 550 m and drifted 10 km W and SW.
Karymsky | Eastern Kamchatka (Russia) | 54.049°N, 159.443°E | Elevation 1513 m
KVERT reported that moderate seismic activity at Karymsky was detected during 15-22 November. Satellite images detected a daily thermal anomaly on the volcano during 15-19 November, possibly indicating weak Vulcanian and Strombolian activity. The Aviation Color Code remained at Orange.
Kilauea | Hawaiian Islands (USA) | 19.421°N, 155.287°W | Elevation 1222 m
During 20-26 November 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. The 7.3-km-long Kahauale’a 2 lava flow, fed by the NE spatter cone, was active with scattered break-out flows and burned the forest N of Pu'u 'O'o.
Sheveluch | Central Kamchatka (Russia) | 56.653°N, 161.36°E | Elevation 3283 m
Based on visual observations and analyses of satellite data, KVERT reported that during 15-22 November a viscous lava flow effused onto the N and NE flanks of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, ash explosions, and fumarolic activity. A thermal anomaly was detected daily in satellite images. Explosions generated ash plumes that rose to altitudes of 4-5 km (13,100-16,400 ft) a.s.l. The Aviation Color Code remained at Orange.
Ulawun | New Britain (Papua New Guinea) | 5.05°S, 151.33°E | Elevation 2334 m
Weekly Reports Archive
|Agung||Fournaise, Piton de la||Lewotobi||Salak|
|Aira||Fuego||Little Sitkin||San Miguel|
|Apoyeque||Great Sitkin||Manda Hararo||Semeru|
|Asamayama||Guagua Pichincha||Maroa||Seulawah Agam|
|Bagana||Home Reef||Misti, El||Soputan|
|Banda Api||Huila, Nevado del||Monowai||Soufriere Hills|
|Bardarbunga||Hunga Tonga-Hunga Ha'apai||Montagu Island||Soufrière St. Vincent|
|Barren Island||Ibu||Moyorodake [Medvezhia]||South Sarigan Seamount|
|Brava||Inielika||Negro, Cerro||Sulu Range|
|Bristol Island||Ioto||Nightingale Island||Sumbing|
|Campi Flegrei Mar Sicilia||Kambalny||Nyamuragira||Tair, Jebel at|
|Chillan, Nevados de||Katla||Palena Volcanic Group||Tara, Batu|
|Copahue||Kick 'em Jenny||Pinatubo||Tokachidake|
|Dieng Volcanic Complex||Kolokol Group||Ranakah||Ubinas|
|Epi||Kusatsu-Shiranesan||Rincon de la Vieja||West Mata|
|Erta Ale||Lamington||Ritter Island||Witori|
|Etorofu-Yakeyama [Grozny Group]||Langila||Ruang||Yasur|
|Fernandina||Lascar||Ruiz, Nevado del||Zhupanovsky|
|Fogo||Lengai, Ol Doinyo||Sabancaya||Zubair Group|
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
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.
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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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
CENAPRED - Centro Nacionale de Prevencion de Desastres (México)
COSPEC - Correlation Spectrometer
CVGHM (formerly VSI) - Center of Volcanology and Geological Hazard Mitigation
GMS - Geostationary Meteorological Satellite
GVO - Goma Volcano Observatory
ICE - Instituto Costarricense de Electricidad (Costa Rica)
IG - Instituto Geofísico (Ecuador)
IGNS - Institute of Geological and Nuclear Sciences (New Zealand)
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)
M - magnitude
METEOSAT - Meteorological Satellite
MWO - Meteorological Watch Office
NOTAM - Notice to Airmen
OVSICORI-UNA - Observatorio Vulcanologico y Sismologico de Costa Rica, Universidad Nacional (Costa Rica)
RSAM - Real-time Seismic Amplitude Measurement
RVO - Rabaul Volcano Observatory
SERNAGEOMIN - Servicio Nacional de Geología y Minería (Chile)
SIGMET - Significant Meteorological Information
SNET - Servicio Nacional de Estudios Territoriales (El Salvador)
SVERT - Sakhalin Volcanic Eruption Response Team (Kurile Islands)
UTC - Coordinated Universal Time
VAAC - Volcanic Ash Advisory Center
VRC - Volcano Research Center (Japan)