Activity for the week of 23 June-29 June 2010
Smithsonian / USGS Weekly Volcanic Activity Report
You are currently viewing Archived reports for the week of 23 June-29 June 2010.
You are currently viewing Archived reports for the week of 23 June-29 June 2010.
Activity for the week of 23 June-29 June 2010
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.
|Gorely||Southern Kamchatka (Russia)||New|
|Pagan||Mariana Islands (USA)||New|
|Ulawun||New Britain (Papua New Guinea)||New|
|Karymsky||Eastern Kamchatka (Russia)||Ongoing|
|Kilauea||Hawaiian Islands (USA)||Ongoing|
|Klyuchevskoy||Central Kamchatka (Russia)||Ongoing|
|Sheveluch||Central Kamchatka (Russia)||Ongoing|
Gorely | Southern Kamchatka (Russia) | 52.559°N, 158.03°E | Elevation 1799 m
KVERT reported that during 17-25 June seismic activity from Gorely was above background levels, and gas-and-steam plumes rose from the crater. A volcanologist working at Gorely on 17 June saw that a new vent had opened on the crater's inner NE wall, above the level of the lake. The vent opening was incandescent, and gas was emitted at temperatures of 800-900 degrees Celsius. Analysis of satellite imagery showed a thermal anomaly over Gorely during 17-18 and 21-23 June; cloud cover prevented observations on other days. The Level of Aviation Color Code was raised to Yellow.
Pagan | Mariana Islands (USA) | 18.13°N, 145.8°E | Elevation 570 m
Tungurahua | Ecuador | 1.467°S, 78.442°W | Elevation 5023 m
Although storm clouds occasionally prevented observations of Tungurahua's summit area, steam-and-gas plumes were seen on 22 and 23 June and steam-and-ash plumes were seen during 24-28 June. The plumes rose as high as 1 km above the crater and drifted NW, W, and SW. During most days ash fell in areas within 8 km SW and occasionally in areas 8 km W and NW. Roaring noises were sometimes heard, and on 25 June were followed by vibrating windows 8 km W and SW. Lahars on 26 June traveled down drainages to the NW and W carrying blocks up to 2 m in diameter. On 27 June ashfall was reported from areas 23 km NW and 25 km W. During 27-28 June incandescence emanated from the crater at night.
Ulawun | New Britain (Papua New Guinea) | 5.05°S, 151.33°E | Elevation 2334 m
RVO reported that white-to-gray plumes rose from Ulawun during 23-25 June and fine ash fell on the SW and NW flanks. Low rumbling was heard and dull fluctuating incandescence was observed for a brief period of time from the SE. During 25-26 June white to gray-brown plumes rose 600 m. Seismicity, dominated by volcanic tremor, remained at a moderate level until 26 June, when Real-time Seismic-Amplitude Measurement (RSAM) values declined.
Source: Rabaul Volcano Observatory (RVO)
Aira | Kyushu (Japan) | 31.593°N, 130.657°E | Elevation 1117 m
Based on information from JMA, the Tokyo VAAC reported that during 23-29 June explosions from Sakura-jima sometimes produced plumes. Those plumes, along with ash plumes occasionally seen by pilots, rose to altitudes of 1.8-3.7 km (6,000-12,000 ft) a.s.l. and drifted E, SE, and NW.
Dukono | Halmahera (Indonesia) | 1.693°N, 127.894°E | Elevation 1229 m
Eyjafjallajokull | Iceland | 63.633°N, 19.633°W | Elevation 1651 m
The Nordic Volcanological Center (NVC) at the Institute of Earth Sciences reported on 23 June that small ash clouds from Eyjafjallajökull's summit caldera were occasionally seen, but dispersed quickly. Water was slowly accumulating in the crater because ice was no longer in contact with hot material.
Source: Institute of Earth Sciences
Karymsky | Eastern Kamchatka (Russia) | 54.049°N, 159.443°E | Elevation 1513 m
Based on analysis of satellite imagery, KVERT reported a thermal anomaly over the volcano during 17, 19-20, and 22-23 June. Small ash clouds 10 x 8 km and 12 x 5.5 km in dimension were seen E of the volcano on 17 and 23 June, respectively. Based on information from KEMSD, the Tokyo VAAC reported that an eruption on 29 June produced a plume that rose to an altitude of 7 km (23,000 ft) a.s.l. Ash was not identified on satellite imagery. The Aviation Color Code level remained at Orange.
Kilauea | Hawaiian Islands (USA) | 19.421°N, 155.287°W | Elevation 1222 m
During 23-29 June HVO reported that activity at Kilauea continued from the summit and the east rift zone. At the summit, the level of a lava-pool surface in the deep pit inset within the floor of Halema'uma'u crater remained mostly stable; glow from the vent was also visible at night. A plume from the vent mainly drifted SW, dropping small amounts of tephra, and occasionally fresh spatter, downwind. At the east rift zone, lava flows that broke out of the TEB lava-tube system built up a number of rootless shields between 580 and 520 m elevation. Satellite images showed thermal anomalies from minor lava flows originating from the shields. The Pu'u 'O'o web camera showed incandescence from a vent on the E wall of the crater.
Kirishimayama | Kyushu (Japan) | 31.934°N, 130.862°E | Elevation 1700 m
Klyuchevskoy | Central Kamchatka (Russia) | 56.056°N, 160.642°E | Elevation 4754 m
KVERT reported that during 18-25 June seismic activity from Kliuchevskoi was above background levels and Strombolian activity was sometimes observed. Ash plumes occasionally rose to an altitude of 5.5 km (18,000 ft) a.s.l. Satellite imagery analysis revealed a large daily thermal anomaly from the volcano and ash plumes that drifted 120 km in multiple directions during 19 and 22-23 June. The Aviation Color Code level remained at Orange.
Sheveluch | Central Kamchatka (Russia) | 56.653°N, 161.36°E | Elevation 3283 m
KVERT reported that during 18-25 June seismic activity from Shiveluch was above background levels and suggested that possible ash plumes rose to an altitude of 5.1 km (16,700 ft) a.s.l. Strong fumarolic activity and hot avalanches were observed during 21-23 June. An ash plume was seen rising to an altitude of 6.5 km (21,300 ft) a.s.l. on 23 June. Satellite imagery showed a large daily thermal anomaly over the lava dome and an ash cloud 5 x 5 km in dimension 30 km SE on 23 June. The Aviation Color Code level remained at Orange.
Weekly Reports Archive
|Ambang||Gaua||Maly Semyachik||Sarychev Peak|
|Anatahan||Great Sitkin||Manda Hararo||Semeru|
|Apoyeque||Guagua Pichincha||Maroa||Seulawah Agam|
|Axial Seamount||Hokkaido-Komagatake||Metis Shoal||Slamet|
|Azul, Cerro||Home Reef||Misti, El||Soputan|
|Balbi||Huila, Nevado del||Monowai||Soufriere Hills|
|Bamus||Hunga Tonga-Hunga Ha'apai||Montagu Island||Soufriere St. Vincent|
|Banda Api||Ibu||Moyorodake [Medvezhia]||South Sarigan Seamount|
|Barren Island||Iliamna||Myojinsho||St. Helens|
|Bezymianny||Inielika||Negra, Sierra||Sulu Range|
|Callaqui||Kadovar||NW Rota-1||Tair, Jebel at|
|Campi Flegrei Mar Sicilia||Kanaga||Nyiragongo||Talang|
|Chillan, Nevados de||Kavachi||Palena Volcanic Group||Tenerife|
|Concepcion||Kick 'em Jenny||Peuet Sague||Tolbachik|
|Descabezado Grande||Kolokol Group||Rabaul||Ulawun|
|Dieng Volcanic Complex||Korovin||Ranakah||Unknown Source|
|Epi||Kverkfjoll||Rincon de la Vieja||Witori|
|Erta Ale||Lamongan||Ritter Island||Yasur|
|Etorofu-Yakeyama [Grozny Group]||Lanin||Ruang||Zavodovski|
|Fernandina||Lengai, Ol Doinyo||Ruiz, Nevado del||Zubair Group|
|Fournaise, Piton de la||Lewotolo||Salak|
|Fourpeaked||Little Sitkin||San Cristobal|
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.
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.
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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) - 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)
KEMSD - Kamchatkan Experimental and Methodical Seismilogical Department
M - magnitude
METEOSAT - Meteorological Satellite
MEVO - Mount Erebus Volcano Observatory
MWO - Meteorological Watch Office
NOTAM - Notice to Airmen
OVDAS - Observatorio Volcanologico de los Andes del Sur (Chile)
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)
UTC - Coordinated Universal Time
VAAC - Volcanic Ash Advisory Center
VAFTAD - Volcanic Ash Forecast Transport And Dispersion
VRC - Volcano Research Center (Japan)