Logo link to homepage

Smithsonian / USGS Weekly Volcanic Activity Report

You are currently viewing Archived reports for the week of 5 March-11 March 2003.


















 Activity for the week of 5 March-11 March 2003

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
Karangetang Siau Island (Indonesia) Ongoing
Kilauea Hawaiian Islands (USA) Ongoing
Lokon-Empung Sulawesi (Indonesia) Ongoing
Nyiragongo DR Congo Ongoing
Popocatepetl Mexico Ongoing
Rabaul New Britain (Papua New Guinea) Ongoing
Reventador Ecuador Ongoing
Semeru Eastern Java (Indonesia) Ongoing
Sheveluch Central Kamchatka (Russia) Ongoing
Soufriere Hills Montserrat Ongoing
Tungurahua Ecuador Ongoing
Witori New Britain (Papua New Guinea) Ongoing


Ongoing Activity


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

During 24 February to 2 March, volcanic activity at Karangetang's South crater consisted of "white-gray ash emissions" rising to low levels, incandescent glow extending to 50 m above the crater, and a booming noise that was heard from the observatory post. During the report period, there was an increase in the number of shallow volcanic earthquakes, while the number of multiphase earthquakes decreased. Karangetang remained at Alert Level 3 (on a scale of 1-4).

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



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

During 4-9 March at Kilauea, lava entered the sea at moderate rates at the West Highcastle entry. Small surface lava flows were scattered across the Kohala lava flow, and surface lava flows were visible above Pulama pali. By 5 March the Kohala lava flow was traveling very slowly towards the sea, to about 30 m away from the sea cliff. Generally, seismicity remained at normal levels, with the long-lasting swarm of long-period earthquakes and tremor at Kilauea's summit, which began last June, continuing at low-to-moderate levels. Moderate tremor was recorded by the nearest seismometer to Pu`u `O`o until the seismometer broke on 5 March. Moderate deflation occurred on 8 March first at the Uwekahuna tiltmeter and then at the Pu`u `O`o tiltmeter. According to a news report, a member of a tour group suffered burns on 10 March when he fell on hot lava while hiking near Chain of Craters road.

Sources: Honolulu Advertiser, US Geological Survey Hawaiian Volcano Observatory (HVO)



Volcano index photo  Lokon-Empung  | Sulawesi (Indonesia)  | 1.358°N, 124.792°E  | Elevation 1580 m

Explosive activity continued at Lokon-Empung during 24 February to 2 March, with 12 explosions producing "white-gray ash columns" that rose 300 m above the volcano. An explosion on 2 March at 2129 was preceded by 204 shallow and 77 deep volcanic earthquakes. During the explosion a "gray-dark ash column" rose 1.5 km above the crater, but incandescent volcanic material remained within the crater. Ash drifted about 14.5 km from the crater to the Tondano area, depositing ~1 mm of ash. Tremor was recorded after the eruption. Lokon-Empung remained at Alert Level 3 (on a scale of 1-4).

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



Volcano index photo  Nyiragongo  | DR Congo  | 1.52°S, 29.25°E  | Elevation 3470 m

The Toulouse VAAC reported that on 6 March at 0900 a cloud probably containing ash was visible on METEOSAT satellite imagery extending ~185 km W of Nyiragongo. By 1200 ash was no longer visible.

Source: Toulouse Volcanic Ash Advisory Centre (VAAC)



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

Several emissions of steam, gas, and ash occurred during 5-11 March associated with the continued destruction of Popocatépetl's lava dome. The largest reported emission, on 5 March at 1005, produced a steam-and-ash cloud that reached a height of 1 km above the crater. Also, a microearthquake and isolated episodes of low-amplitude harmonic tremor were recorded. The Alert Level at Popocatépetl remained at Yellow Phase II, with a 12-km-radius restricted area.

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

The eruption at Rabaul caldera's Tavurvur cone continued during 26 February to 2 March. Activity was characterized by discrete, slow, convoluted ash plumes occurring at long, irregular intervals and rising slowly to several hundred to a thousand meters above the summit. Activity during the report period was slightly lower than activity during 17-26 February, with intervals between ash emissions becoming much longer. Ash emissions were blown to the E and SE. Seismicity remained at low levels and there were no significant changes in deformation. According to the Darwin VAAC, ash was not visible on satellite imagery.

Sources: Darwin Volcanic Ash Advisory Centre (VAAC), Rabaul Volcano Observatory (RVO) via the Darwin Volcanic Ash Advisory Center



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

During 1-7 March, lahars continued to travel down Reventador's flanks as they had for several weeks. On 2 March lahars descended Marker Gorge, disrupting travel in the area. On the 3rd lahars traveled down Marker and Reventador gorges. Flooding occurred on the 4th. During the report period, seismicity and gas emissions remained at low levels, and there was no indication of increased volcanism.

Source: Instituto Geofísico-Escuela Politécnica Nacional (IG)



Volcano index photo  Semeru  | Eastern Java (Indonesia)  | 8.108°S, 112.922°E  | Elevation 3657 m

During 24 February to 2 March, volcanism at Semeru remained at high levels. "White-gray ash plumes" were observed rising 300-400 m above the summit. Seismicity was dominated by 629 explosion earthquakes. Semeru remained at Alert Level 2 (on a scale of 1-4).

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



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

During 28 February to 7 March, seismicity remained above background levels at Shiveluch and many shallow earthquakes were recorded. Seismic data indicated that 20 ash-and-gas explosions reached heights of 4 km above the lava dome, and hot avalanches possibly occurred. Volcanic spasmodic tremor was recorded and gas-and-steam plumes rose to 1 km a.s.l. Seismic data indicated that ash explosions on 4 March during 1130-1140 produced clouds to 5.5 km a.s.l. At this time a "water flow" washed away the Klyuchi-Ust'-Kamchatsk road in an area 40 km from the town of Klyuchi. The "water flow" was up to 0.7 m deep. On 6 March seismic data indicated that an explosion produced an ash cloud to 8.5 km a.s.l. During the report period, thermal anomalies were visible on satellite data. Shiveluch remained at Concern Color Code Yellow.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)



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

During 28 February to 7 March, volcanic activity at Soufrière Hills remained at similar levels to the previous few weeks, with continued lava-dome growth and moderate pyroclastic-flow activity. Lava extrusion was accompanied by rockfalls and pyroclastic flows to the NE and N talus slopes and valleys. Pyroclastic flows occurred most frequently in Tuitt's Ghaut, and a few on Farrell's Plain, with run-out distances up to 1 km. Sulfur dioxide emission rates were variable. The Washington VAAC stated that several low-level ash plumes were visible on satellite imagery.

Sources: Montserrat Volcano Observatory (MVO), Washington Volcanic Ash Advisory Center (VAAC)



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

On 5 March at 1539 lahars began to descend the gorges on Tungurahua's W flank, obstructing the route between the towns of Baños and Pelileo. Around 7 March volcanic and seismic activity intensified at Tungurahua and according to the Washington VAAC, IG reported that ash from an explosion rose to ~7 km a.s.l. and drifted SW. No ash was visible on satellite imagery. IG also reported that by 9 March several low-to-moderate explosions had occurred at Tungurahua, which were accompanied by Strombolian activity, gas-and-ash emissions, and loud roaring sounds. Seismicity was dominated by tremor and long-period earthquakes.

Sources: Instituto Geofísico-Escuela Politécnica Nacional (IG), Washington Volcanic Ash Advisory Center (VAAC)



Volcano index photo  Witori  | New Britain (Papua New Guinea)  | 5.576°S, 150.516°E  | Elevation 724 m

An aerial inspection of Pago's Witori caldera on 28 February revealed that lava continued to flow from the northwestern-most vent as it had in January. Lateral flow of the N lava lobe had slowed since it was last observed, but there was thickening of the lava deposit along the entire body of the flow. The S lava lobe progressed farther S, but at a very slow rate. All lava was contained inside the floor of Witori caldera. Scientists found that vegetation had died on the S side of the volcano due to volcanic gases blowing to the S, rather than from increased volcanic heat. Vapor continued to be emitted from all vents along the fissure system, and in smaller amounts from the main summit crater. Seismicity continued at low levels, with a decline in the number of earthquakes during the previous 2 weeks. Seismic and GPS data from the remote field site were no longer available as of 27 February due to the theft of four solar panels.

Source: Rabaul Volcano Observatory (RVO) via the Darwin Volcanic Ash Advisory Center



Weekly Reports Archive

Search by Volcano
Agung Fuego Llaima San Cristobal
Ahyi Fujisan Loihi San Miguel
Aira Fukutoku-Oka-no-Ba Lokon-Empung San Vicente
Akan Galeras Lopevi Sangay
Alaid Galunggung Machin Sangeang Api
Alu-Dalafilla Gamalama Makian Santa Ana
Ambae Gamkonora Makushin Santa Maria
Ambang Gaua Maly Semyachik Sarigan
Ambrym Gorely Manam Sarychev Peak
Anatahan Great Sitkin Manda Hararo Saunders
Antuco Grimsvotn Marapi Semeru
Apoyeque Guagua Pichincha Maroa Semisopochnoi
Arenal Guallatiri Martin Seulawah Agam
Asamayama Guntur Masaya Sheveluch
Askja Hachijojima Mauna Loa Shishaldin
Asosan Hakoneyama Mayon Simbo
Augustine Heard McDonald Islands Sinabung
Avachinsky Hekla Melimoyu Sinarka
Awu Hierro Merapi Siple
Axial Seamount Hokkaido-Komagatake Metis Shoal Sirung
Azul, Cerro Home Reef Midagahara Slamet
Azumayama Hood Misti, El Soputan
Bagana Hudson, Cerro Miyakejima Sorikmarapi
Balbi Huila, Nevado del Momotombo Sotara
Bamus Hunga Tonga-Hunga Ha'apai Monowai Soufriere Hills
Banda Api Ibu Montagu Island Soufriere St. Vincent
Bardarbunga Ijen Moyorodake [Medvezhia] South Sarigan Seamount
Barren Island Iliamna Mutnovsky Spurr
Batur Iliwerung Myojinsho St. Helens
Bezymianny Inielika Nabro Stromboli
Bogoslof Ioto Negra, Sierra Sulu Range
Brava Iya Negro, Cerro Sumbing
Bristol Island Izu-Torishima Nightingale Island Sundoro
Bulusan Jackson Segment Nishinoshima Suretamatai
Calbuco Kaba Nisyros Suwanosejima
Callaqui Kadovar Novarupta Taal
Cameroon Kambalny NW Rota-1 Tair, Jebel at
Campi Flegrei del Mar di Sicilia Kanaga Nyamuragira Takawangha
Cayambe Kanlaon Nyiragongo Talang
Cereme Karangetang Okataina Tambora
Chachadake [Tiatia] Karkar Okmok Tanaga
Chaiten Karthala Ontakesan Tandikat-Singgalang
Chiginagak Karymsky Oraefajokull Tangkoko-Duasudara
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
Cleveland Kerinci Panarea Three Sisters
Colima Ketoi Papandayan Tinakula
Colo Kharimkotan Parker Tofua
Concepcion Kick 'em Jenny Pavlof Tokachidake
Copahue Kikai Peuet Sague Tolbachik
Cotopaxi Kilauea Pinatubo Toliman
Cuicocha Kirishimayama Planchon-Peteroa Tongariro
Cumbal Kizimen Poas Tungurahua
Dabbahu Klyuchevskoy Popocatepetl Turrialba
Dempo Kolokol Group Puyehue-Cordon Caulle Ubinas
Descabezado Grande Korovin Rabaul Ulawun
Dieng Volcanic Complex Koryaksky Raikoke Unknown Source
Dukono Krakatau Ranakah Unnamed
Ebeko Krummel-Garbuna-Welcker Raoul Island Unnamed
Ebulobo Kuchinoerabujima Rasshua Veniaminof
Egon Kurikomayama Raung Villarrica
Ekarma Kusatsu-Shiranesan Redoubt West Mata
Epi Kverkfjoll Reventador White Island
Erebus Lamington Rincon de la Vieja Witori
Erta Ale Lamongan Rinjani Wolf
Etna Langila Ritter Island Yasur
Etorofu-Yakeyama [Grozny Group] Lanin Rotorua Zaozan
Eyjafjallajokull Lascar Ruang Zavodovski
Fernandina Lengai, Ol Doinyo Ruapehu Zhupanovsky
Fogo Leroboleng Ruiz, Nevado del Zubair Group
Fonualei Lewotobi Sabancaya
Fournaise, Piton de la Lewotolo Sakar
Fourpeaked Little Sitkin Salak
Search by Date
Use the dropdowns to choose the year and week for archived Weekly Reports.





 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.

For site security purposes and to ensure that this service remains available to all users, this government computer system employs software programs to monitor network traffic to identify unauthorized attempts to upload or change information, or otherwise cause damage. Unauthorized attempts to upload information or change information on this website are strictly prohibited and may be punishable under the Computer Fraud and Abuse Act of 1986 and the National Information Infrastructure Protection Act. Information may also be used for authorized law enforcement investigations. (Last modified September 21, 1999.)

U.S. Department of the Interior, U.S. Geological Survey, Reston, VA, USA
URL https://volcano.si.edu/reports_weekly.cfm
Contact: USGS Web Team
USGS Privacy Statement


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)