Archive for the ‘volcanism’ Category
Posted by feww on July 3, 2011
Mount Soputan, one of Sulawesi island’s most active volcanoes, erupted again on Sunday
North Sulawesi’s Soputan volcano erupted on Sunday at about 6:00 am local time, ejecting a column of volcanic gases about 6km into the air.
However, no evacuation order was issued as the volcano did not pose an immediate danger, officials said.
“They nearest residents live some eight kilometers from the mountain and so evacuation is not yet necessary [since the current evacuation zone was set at a 6km radius around the volcano, a forested area that is uninhabited,]“ spokesman of the National Disaster Mitigation Agency (BNPB) said.
“Last night, at around 11 pm, the mountain entered its eruption phase,” he said.
Mt Soputan is located about 2,160 km (1,340 miles) northeast of Indonesian capital Jakarta. The volcano had previously erupted in 2008.
Soputan volcano spews thick smoke and heat clouds in Minahasa on October 7, 2008. Source: AFP. Image may be subject to copyright.
Indonesia, which sits on the Pacific Ring of Fire, is home to 150 listed volcanoes, some 109 to 130 of which are regarded as active, according to various sources.
A Map of Listed Volcanoes of Indonesia.
Summary of Volcano Details
Country: Indonesia
Region Name: Sulawesi Island
Volcano Type: Stratovolcano
Last Known Eruption: 2008
Summit Elevation: 1,784 m
Location: 1.108°N, 124.73°E
Soputan on a restful day!
The small Soputan stratovolcano, seen here from the west, was constructed on the southern rim of the Quaternary Tondano caldera in northern Sulawesi Island. The youthful, largely unvegetated Soputan volcano is one of Sulawesi’s most active volcanoes. During historical time the locus of eruptions has included both the summit crater and Aeseput, a prominent NE flank vent that formed in 1906 and was the source of intermittent major lava flows until 1924. Photo (undated) by Agus Solihin (Volcanological Survey of Indonesia). Image and caption: GVP.
Pacific Ring of Fire
The Pacific Ring of Fire is an area of frequent siesmic activity and volcanic eruptions caused by plate tectonic movements. Encircling the basin of the Pacific Ocean, which contains oceanic trenches, volcanic arcs, and volcanic belts, the 40,000 km Ring of Fire is home to 452 volcanoes. About ninety percent of the world’s earthquakes including 80% of the world’s major earthquakes occur along the Pacific Ring of Fire.
Volcanic arcs and oceanic trenches partly encircling the Pacific Basin form the so-called Pacific Ring of Fire, a zone of frequent earthquakes and volcanic eruptions. The trenches are shown in blue-green. The volcanic island arcs, although not labeled, are parallel to, and always landward of, the trenches. For example, the island arc associated with the Aleutian Trench is represented by the long chain of volcanoes that make up the Aleutian Islands. (Source: USGS.)
Other Volcanic Activity/ Unrest
[Source: Smithsonian / USGS Weekly Volcanic Activity Report for June 22 - 28]
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Posted in volcanism, volcano | Tagged: Ambrym, Challenger Deep, indonesia volcano, Kirishima, Mount Soputan, Nabro, Puyehue-Cordon-Caulle, Soputan volcano | Leave a Comment »
Posted by feww on June 14, 2011
Correction: Nabro Volcano in Eritrea Erupts Ejecting a 15-km Plume of Ash into the Atmosphere
Following a swarm of Earthquakes that struck within the Afar Triangle Eritrea, Ethiopia, yesterday, FIRE-EARTH said:
… there’s a strong probability that the quakes may have primed one or more regional volcanoes for eruption.
Nabro Volcano erupted around midnight Sunday local time, ejecting a 15-km plume of ash into the air, reports said.
The volcano, which is located about 375 km southeast of the Eritrean capital Asmara, sits within the Afar Triangle, a tectonic triple junction.
Nabro volcano, Eritrea, sits close to the border with Ethiopia. Credit: ESA/NASA. Click image to enlarge.
Nabro eruption is captured in this photo-like image by MODIS on the Aqua satellite on June 13, 2011. “Initial reports from news agencies and the Volcanic Ash Advisory Center in Toulouse, France, proclaimed the eruption to be occurring at Dubbi, a volcano further south. But later reports from volcanologists, field scientists, and the satellite image above appear to confirm the eruption at Nabro. There are no historical reports of eruptions at Nabro before today.” Image and caption: NASA-EO. Click image to enlarge. Download largest image (4 MB, JPG)
The fact that there was no historic record of eruption at Nabro volcano may explain why the French VAAC got it wrong initially, attributing the eruption to the Dubbi volcano – EDRO
Nabro Volcano
Country: Eritrea
Region: Northeastern Africa
Previous Known Eruption: NOT KNOWN
Summit Elevation: 2,218 m (7,277 ft)
Coordinates : 13.37°N, 41.70°E
Source: GVP
Nabro Volcano Space Shuttle image
The large caldera below and to the left of the center of this Space Shuttle photo of the Danakil Alps of Ethiopia is Nabro. The 2218-m-high Nabro stratovolcano is the highest volcano in the Danakil depression and is truncated by nested calderas 10 and 5 km in diameter. The larger caldera is widely breached to the SW. Nabro was constructed primarily of rhyolitic lava flows and pyroclastics. The 8-km-wide Mallahle caldera is at the lower left, and the dark-colored lava flows at the right are from Dubbi volcano. NASA Space Shuttle image S-61A-36, 1985. Caption: GVP
Nabro (top) and Mallahle (bottom) volcanic calderas. This false-color topographical image of the two volcanoes was produced by NASA. Click image to enlarge.
Map of East Africa showing some of the historically active volcanoes (red triangles) and the Afar Triangle (shaded, center)— a so-called triple junction (or triple point), where three plates are pulling away from one another: the Arabian Plate, and the two parts of the African Plate (the Nubian and the Somalian) splitting along the East African Rift Zone. Source: USGS
A map showing the approximate location of Nabro and Dubbi Volcanoes. The yellow circles mark the epicenters of the recent quakes that struck the area. Red stars are the two largest shocks in the swarm measuring 5.7Mw. Click image to enlarge.
The huge ash cloud ejected by the volcano is said to be moving across the Horn of Africa, threatening air travel. The German airline Lufthansa said on Monday it had cancelled two flights, one a flight out of the Eritrean capital Asmara, and the other into Addis Ababa.
The ash plume also forced the U.S. Secretary of State Hillary Clinton to curtail her visit to the region. Ironically, Obama was forced to abandon his visit to Ireland when Iceland’s Grímsvötn volcano erupted last month.
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Updated on June 14, 2011 at 07:58UTC by EDRO
Updated on June 14, 2011 @ 12:01UTC by FEWW
Posted in volcanism, volcano | Tagged: Afar Triangle, Danakil depression, Dubbi Volcano, East African Rift Zone, Grimsvotn volcano, Lufthansa, Nabro Volcano, Nabro volcano eruption satellite image, Nabro Volcano Space Shuttle image | Leave a Comment »
Posted by feww on May 1, 2011
Hundreds of small- to medium-sized quakes strike near Hawthorne, Nevada
A large swarm of earthquakes has rattled the Buller Mountain area near Hawthorne, Nevada since March 5, 2010. At least 400 small- and medium-sized earthquakes measuring between M1.0 and M4.6 have struck a 10 sq km area since April 10., NASA-EO reported. “This map shows earthquake locations (white circles) from March 5, 2011, through the early morning of April 27, superimposed on a natural-color satellite image from September 19, 2002… Several abandoned mines are visible as bright scars on the landscape, and the lava flows of Mud Springs Volcano are dark gray. The image was acquired by the Enhanced Thematic Mapper Plus (ETM+) aboard Landsat 7. ” The earthquake swarm is said to be tectonic in origin. Source: NASA-EO. Click image to enlarge. Download largest image (3 MB, JPEG)
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Posted in volcanism | Tagged: Aurora-Bodie Volcanic Field, Basin and Range, Buller Mountain, Buller Mountain Earthquake Swarm, Hawthorne, Mud Springs Volcano, Sierra Nevada, Wassuk Range | Leave a Comment »
Posted by feww on February 17, 2011
VolcanoWatch Weekly [17 Feb 2011]
Shinmoedake Update:
Some 2,500 people living near Shinmoedake volcano on Japan’s Kyushu island were advised earlier today to evacuate their homes after heavy rain threatened lahar avalanches, reports say.
VoW: Mount St. Helens
Mount St. Helens and Spirit Lake, as seen from Bear Cove. Image Source: U.S. Forest Service via USGS/CVO.
Phreatic eruption of Mount St. Helens, March 28, 1980, as seen from the north. Image by C.Dan Miller, USGS/CVO
Mount St. Helens, Washington Ash Plume Path May 18, 1980
Click image to enlarge.
Mount St. Helens Volcano
Position: 46°12′ N 122°10’48″ W,
Summit Elevation: 2,549 m (8,363 ft )
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN
Source: USGS/CVO
Recent observations:
An M4.3 earthquake struck the Mount St. Helens region this morning, 14 February 2011, at 10:35 a.m. PST (18:35 UTC) and was felt widely through southwestern Washington and Northwestern Oregon (http://earthquake.usgs.gov/earthquakes/dyfi/events/uw/02141835/us/index.html). Its exact magnitude may change by a few tenths from this value as records are further analyzed. The earthquake was followed by several aftershocks up to M2.8 over the next few hours (http://www.pnsn.org/recenteqs/latest.htm), the three largest of which were also reported felt. All of the earthquakes are located in an area about 8 kilometers (5 miles) north of the crater of Mount St. Helens, near the Johnston Ridge Observatory, at a depth of about 4 to 6 kilometers (2.5 to 4 miles).
Today’s earthquakes are in the same place as a small swarm that took place about two weeks earlier, on 29 January. These earthquakes are reminiscent of a swarm that took place about 30 years ago, when a swarm of small earthquakes began in August 1980, a few miles northwest of today’s activity. The 1980-1981 sequence climaxed with an M5.5 earthquake on 14 February 1981. Analysis of the 1981 events suggested that they occurred along existing faults in the Mount St. Helens seismic zone, a northwest to southeast trending system of faults in which Mount St. Helens lies. The Mount St. Helens seismic zone exhibits strike-slip motion, with the southwestern rocks slipping horizontally northwest relative to the rocks northeast of the fault zone. The fault zone likely exerts control on the location of Mount St. Helens volcano. Studies following the 1980 eruption suggested that the magma removed during the May 1980 eruption and subsequent lava-dome building caused faults along the seismic zone to slip in response to the magma withdrawal. Similar interaction of volcanic activity and tectonic fault movement is possible in the case of today’s earthquakes, but at present there appears to be no signs of unrest in the volcanic system. USGS/Cascades Volcano Observatory, Vancouver, Washington
Summary of Weekly Volcanic Activity Report – 9 February to 15 February 2011
[Source: SI/USGS]
New Activity/Unrest:
Map of Volcanoes
Map of Volcanoes. Background Map: University of Michigan. Designed and enhanced by Fire Earth Blog. Click image to enlarge.
Ongoing Activity:
- Dukono, Halmahera
- Karymsky, Eastern Kamchatka (Russia)
- Kilauea, Hawaii
- Kizimen, Eastern Kamchatka (Russia)
- Kliuchevskoi, Central Kamchatka (Russia)
- Poás, Costa Rica
- Sakura-jima, Kyushu
- Shiveluch, Central Kamchatka (Russia)
- Soufrière Hills, Montserrat
- St. Helens, Washington (USA)
- Suwanose-jima, Ryukyu Islands (Japan)
- Tengger Caldera, Eastern Java (Indonesia)
For additional information, see source.
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Posted in volcanism, volcano, Volcano News, Volcano Watch | Tagged: Kirishima, Mount St. Helens, Santa María, Shinmoedake, Shinmoedake volcano, Spirit Lake | Leave a Comment »
Posted by feww on January 27, 2011
Mt Shinmoedake continued to eject tephra Thursday
Shinmoedake volcano in southern Japan, which began erupting on Wednesday, ejecting rocks, ash and smoke about 4,600m into the air, was still erupting on Thursday.
Local highways and railroads have become impassable as a result, and at least 4 flights to the area have been canceled as a precaution, reports say.
Shinmoedake volcano continued erupting for a second day on Thursday. Freeze frame from ITN news clip.
Shinmoedake Volcano Erupts
Natural-color satellite image of Shinmoedake volcano captured by MODIS aboard NASA’s Terra satellite on January 26, 2011. Shinmoedake is a volcano in the Kirishima volcanic complex on Japan’s Kyushu island. Source: NASA-EO. Click image to enlarge.
Lightening is photographed using time exposure during an eruption from Mt Shinmoedake in the Kirishima volcanic complex on the border of Kagoshima and Miyazaki prefectures, southern Japan. Photo: Shuji Uchimura/AP. Image may be subject to copyrights.
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Posted in volcanic activity, volcanic eruption, volcanic event, volcanism, volcano | Tagged: Japan Volcano, Kirishima complex, Kyushu island, Mt Shinomoedake, Shinmoedake volcano | Leave a Comment »
Posted by feww on January 15, 2011
Europe’s largest and most active volcano lights up the Sicilian night with a fountain and cascade of lava
The massive Mt Etna erupts. Image credit: ANSA. Image may be subject to copyright.
Mt Etna, Europe’s largest and most active volcano, rumbled spewing ash and steam into the air on January 11 when MODIS on NASA’s Terra satellite captured the above image of the east coast of Sicily featuring the 3,350-meter-high volcano’s unrest, a day before it erupted. Source: NASA-EO. Click image to enlarge. Download larger image (3 MB, JPEG)
A plume of sulfur dioxide from Mt Etna is being carried over the Mediterranean Sea. Image was acquired by the AIRS on NASA’s EOS-AQUA satellite. Click image to enlarge.
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Posted in volcanism, volcano, volcano images, Volcano News, volcanoes | Tagged: airs image of etna so2, etna erupts, Mt Etna, mt etna erupts, mt etna satellite image | Leave a Comment »
Posted by feww on November 22, 2010
Bulusan ejects a 2-km column of ash and steam into the air
At least 500 families have been evacuated from areas near the volcano. About 3,000 families (15,000 people) in 18 villages have so far been affected by the ash eruptions.
Mt. Bulusan remains under Alert Level 1 that prohibits the public from entering the 4-km radius of the Permanent Danger Zone (PDZ).
Meanwhile the municipal council in the town of Sorsogon has declared “a state of calamity” following repeated ash eruptions from Bulusan Volcano and threats of lahars and pyroclastic flows into the local rivers.
The ash explosions from Bulusan Volcano has already “affected Barangays (villages) Cogon, Monbon, Tinampo, Bolos, Gulang-Gulang, Bagsangan, Mapaso and Gabao and the rivers of Patag and Cadac-an in this town,” according to a report.
Mount Bulusan ash explosions shower Sorsogon town in Bicol region south of Manila, Philippines on 21 November 2010. Photo credit: EPA/ALDRIN RECEBIDO. Image may be subject to copyright.
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Posted in Bicol region, volcanism, Volcano Hazard, volcano images, Volcano News | Tagged: Bulusan volcano, Mt. Bulusan, Philippines volcanoes, volcanic tremors, volcanoes of Philippines | Leave a Comment »
Posted by feww on September 27, 2010
Will Arabia Be So Lucky Next Time?
A swarm of at least 30,000 tremors that struck Harrat Lunayyir, an ancient lava field in western Arabia, between April and June 2009 was a ‘failed eruption,’ US and Arabian geologists say.
An aerial view of one of the volcanoes in the Al-Aayiss area.
Based on the ground deformation satellite data, depth and signature of the shockwaves, the researchers have concluded that the seismic activity was related to a ‘failed volcanic eruption.’ They say magma has now moved very close to the surface, increasing the probability of an eruption.
The Arabian peninsula’s western side comprises lava fields [harrat] measuring up to 200,000 square kilometers, which were formed over the past 30 million years, after Arabia split from Africa.
Fissures formed when the earthquake swarm struck Harrat Lunayyir, western Arabia, between April and June 2009. Image source: Arabian media. Image may be subject to copyright.
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Posted in volcanic activity, volcanic eruption, volcanism, volcano | Tagged: Arabian Peninsula, Harrat Lunayyir, lava fields | 1 Comment »
Posted by feww on August 30, 2010
Mount Sinabung 2nd eruption ‘more powerful’
Sinabung spewed ash to a height of about 2km in its second eruption in two days
Mount Sinabung volcano spews smoke in Suka Nalu village in the district of Tanah Karo, in Indonesia’s North Sumatra province August 30, 2010. The Indonesian volcano that erupted for the first time in centuries on Sunday spewed fresh plumes of smoke early on Monday morning, causing panic in nearby villages and delaying local flights, officials said on Monday. Credit: Reuters/Tarmizy Harva. Image may be subject to copyright. More photos …
According to Indonesia’s head volcanologist, Surono, Today’s eruption was more powerful than the first yesterday.
“Earlier today was another eruption at 6.30 a.m., sending out smoke as high as two km, more or less.” He said.
“I saw some hot pieces of volcanic rock come out and burn trees in the area,” A Reuters photographer said
“People have been evacuated from areas within a six km (four-mile) radius of the volcano,” vulcanologist Surono said. “Beyond six km it is safe, but there has still been a lot of panic among people here who don’t understand that.”
He said it was impossible to know when the eruptions would stop, but it was unlikely volcanic dust would drift to neighboring countries.
“Here, [the volcanic dash] is three millimeters (1/8 of an inch) thick on the leaves of plants,” he said, adding that he did not believe the neighboring countries would be affected as a result of this eruptive episode.
Our colleagues at EDRO believe that the collapse of Singapore may occur as a result of volcanic activity on the island of Sumatra. However, they have not disclosed any further detail.
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Posted in sumatra volcano, volcanic activity, volcanic eruption, volcanic hazard, volcanism, volcano, Volcano News | Tagged: indonesia volcano, Mount Sinabung, Singapore | 4 Comments »
Posted by feww on August 29, 2010
Lava spewing ‘like a ball of fire’
Indonesian officials have issued a red alert after Mount Sinabung on the island of Sumatra began spewing lava early Sunday morning.
Villagers ride a motorcycle while covering their mouths at the district of Tanah Karo outside the city of Medan, North Sumatra, as the Mount Sinabung volcano spews smoke in the background August 28, 2010. Credit: Reuters/Tarmizy Harva. Image may be subject to copyright.
The volcano had been spewing smoke and ash to a height of about 1.5km a.s.l. throughout Saturday, local reports said, quoting eye witnesses who saw lava spewing out of the volcano from 7 km away.
The authorities have evacuated up to 15,000 residents living near the volcano.
Mount Sinabung is one of Indonesia’s 130 active volcanoes, and had last erupted about 400 years ago.
The head of Indonesia’s vulcanology center was quoted by Reuters as saying:
“This is the first time since 1600 that Sinabung erupted [although there are no activities recorded] and we have little knowledge in terms on its eruptive patterns and general forms.”
The conical Sinabung volcano, seen here from the east, rises above farmlands on the Kato Plateau. Gunung Sinabung contains four summit craters, the southernmost of which is the youngest. Many prominent lava flows appear on the flanks of the volcano. No confirmed historical eruptions are known from Gunung Sinabung. Photo by Tom Casadevall, 1987 (U.S. Geological Survey). Caption: GVP
Sinabung Volcano: Summary of Details
Country: Indonesia
Region: Sumatra
Volcano Type: Stratovolcano
Volcano Status: Holocene
Last Known Eruption: Unknown [1600?]
Summit Elevation: 2,460m
Latitude: 3.17°N Longitude: 98.392°E
Source: GVP
Sinabung is located in Group K Volcanoes
Map of Volcanoes. Background Map: University of Michigan. Designed and enhanced by Fire Earth Blog. Click image to enlarge.
Sinabung volcano, seen from Gurukinayan village on the south, shows prominent lava flows on its flanks and a dramatic summit spine. The summit of Gunung Sinabung is much less frequently visited than neighboring Sabayak volcano to the NE. Photo by S. Wikartadipura, 1982 (Volcanological Survey of Indonesia). Source: GVP.
Approximate location of Sinabung is marked on the map by FEWW.
The volcano is located about 260km east of the epicenter of the 9.1 – 9.3Mw earthquake which struck off the coast of Sumatra on December 26, 2004, triggering the deadly Boxing Day Tsunami.
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Posted in volcanic activity, volcanic eruption, volcanism, volcano, volcano alert, volcano eruption, Volcano News | Tagged: indonesia volcano, Mount Sinabung, sumatra volcano | 3 Comments »
Posted by feww on July 16, 2010
Manam Volcano Puffs Out a Small Plume
Manam Volcano released a small plume on June 16, 2010, which was captured by ALI on NASA’s EO-1 satellite. Source: NASA E/O.
The 1,807-m Manam, one of Papua New Guinea most active volcanoes, last erupted in 2009, is a basaltic-andesitic stratovolcano forming a 10-km wide island, located about 13km off the coast of mainland PNG.
“Frequent historical eruptions, typically of mild-to-moderate scale, have been recorded at Manam since 1616. Occasional larger eruptions have produced pyroclastic flows and lava flows that reached flat-lying coastal areas and entered the sea, sometimes impacting populated areas.” —GVP.
Summary of Weekly Volcanic Activity Report
[Source: SI/USGS]
New Activity/Unrest (7 July – 13 July 2010)
NOTE: Based on Fire-Earth Model, more volcanic activity/unrest may be expected in areas/groups shown in red.
Map of Volcanoes. Background Map: University of Michigan. Designed and enhanced by Fire Earth Blog. Click image to enlarge.
Ongoing Activity:
- Bagana, Bougainville
- Dukono, Halmahera
- Karymsky, Eastern Kamchatka (Russia)
- Kilauea, Hawaii (USA)
- Kirishima, Kyushu
- Kliuchevskoi, Central Kamchatka (Russia)
- Pacaya, Guatemala
- Sakura-jima, Kyushu
- Shiveluch, Central Kamchatka (Russia)
- Tungurahua, Ecuador
- Ulawun, New Britain
For additional information, see source.
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Posted in volcanism, volcano, Volcano Hazard, Volcano News, Volcano Watch | Tagged: Map of Volcanoes, Montserrat, Sakura-jima, Soufrière Hills, Stromboli | Leave a Comment »
Posted by feww on July 9, 2010
Summary of Weekly Volcanic Activity Report
[Source: SI/USGS]
New Activity/Unrest (30 June – 6 July 2010)
- Ebeko, Paramushir Island [Group J]
- Gorely, Southern Kamchatka (Russia) – [Group J]
- Tiatia, Kunashir Island [Group J]
- Ulawun, New Britain [Group K]
NOTE: Based on Fire-Earth Model, more volcanic activity/unrest may be expected in areas/groups shown in red.
Map of Volcanoes. Background Map: University of Michigan. Designed and enhanced by Fire Earth Blog. Click image to enlarge.
Ongoing Activity:
- Arenal, Costa Rica
- Bagana, Bougainville
- Dukono, Halmahera
- Karymsky, Eastern Kamchatka (Russia)
- Kilauea, Hawaii (USA)
- Kliuchevskoi, Central Kamchatka (Russia)
- Miyake-jima, Izu Islands (Japan)
- Pagan, Mariana Islands (Central Pacific)
- Sakura-jima, Kyushu (Japan)
- Shiveluch, Central Kamchatka (Russia)
- Soufrière Hills, Montserrat
- Tungurahua, Ecuador
For additional information, see source.
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Posted in volcani hazard, volcanic eruption, volcanism, volcano | Tagged: Ebeko, Gorely, Tiatia, Ulawun | Leave a Comment »
Posted by feww on July 2, 2010
Summary of Weekly Volcanic Activity Report
[Source: SI/USGS]
New Activity/Unrest (23 June – 29 June 2010)
- Gorely, Southern Kamchatka (Russia) – [Group J]
- Pagan, Mariana Islands (Central Pacific) – [Group L]
- Tungurahua, Ecuador [Group D]
- Ulawun, New Britain [Group K]
NOTE: More volcanic activity/unrest may be expected in areas/groups shown in red.
Map of Volcanoes. Background Map: University of Michigan. Designed and enhanced by Fire Earth Blog. Click image to enlarge.
Ongoing Activity:
For additional information, see source.
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Posted in volcanic activity, volcanism, volcano, volcano alert, Volcano News, Volcano Watch | Tagged: Bárdarbunga, Gorely, Pagan, Tungurahua, Ulawun | Leave a Comment »
Posted by feww on June 19, 2010
Manam Volcano Exhales a Faint Plume
Manam Volcano released a faint plume on June 16, 2010. Image acquired by ALI on NASA’s EO-1 satellite. Located about 13 kilometers off the coast of mainland Papua New Guinea, the 1,807m high Manam forms a 10-km wide island and two summit craters. Source: NASA E/O. Click image to enlarge. Download large image (4 MB, JPEG)
Summary of Weekly Volcanic Activity Report
[Source: SI/USGS]
New Activity/Unrest (9 June – 15 June 2010)
Map of Volcanoes. Background Map: University of Michigan. Designed and enhanced by Fire Earth Blog. Click image to enlarge.
Ongoing Activity:
- Bagana, Bougainville
- Batu Tara, Komba Island (Indonesia)
- Dukono, Halmahera
- Eyjafjallajökull, Southern Iceland
- Fuego, Guatemala
- Gaua, Banks Islands (SW Pacific)
- Karymsky, Eastern Kamchatka (Russia)
- Kilauea, Hawaii
- Kliuchevskoi, Central Kamchatka (Russia)
- Popocatépetl, México
- Sakura-jima, Kyushu
- Shiveluch, Central Kamchatka (Russia)
- Soufrière Hills, Montserrat
For additional information, see source.
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Posted in volcanic activity, volcanic eruption, volcanic hazard, volcanism, volcano | Tagged: Manam Volcano satellite image, Melimoyu volcano, San Cristóbal, Volcano Watch, Volcano Watch Weekly | Leave a Comment »
Posted by feww on June 11, 2010
Plume Spewed by Ulawun Volcano
Ulawun Volcano located on Papua New Guinea (PNG) island of New Britain spewed a plume of steam and ash on June 10, 2010. The above is a natural-color image captured by ALIon NASA’s EO-1 satellite on the same day.
Ulawun is one of the most active volcanoes in PNG and has repeatedly erupted producing large lava and pyroclastic flows over the past 40 years. Image Source: NASA E/O. Click images to enlarge.
Ulawun Volcano (Father) and Bamus Volcano (Son)
Summit Elevation: 2,334 m
Coordinates: 5.05°S, 151.33°E
Ulawun and Bamus volcano (upper left) are the two highest volcanoes of the Bismarck arc, and are known as the Father and South Son volcanoes. The peak to the left of the summit is a prominent E-W-trending escarpment on the south side that may result from large-scale slumping. Historical eruptions date back to the beginning of the 18th century. Photo by Wally Johnson (Australia Bureau of Mineral Resources). Caption: GVP.
Klyuchevskaya Volcano Signals New Round of Activity
Protruding from clouds, the summit of Klyuchevskaya Volcano located on Kamchatka Peninsula (Russia) released a small plume on June 7, 2010. Natural-color image acquired by ALI on NASA’s EO-1Download large image (924 KB, JPEG) satellite the same day. “A faint brown-gray plume blows toward the north (image right), contrasting with the bright clouds below.” Source: NASA E/O.
6,000-year-old Kliuchevskoi: Kamchatka’s highest and most active volcano
Summit Elevation: 4,835m
Coordinates: 56.057°N, 160.638°E
The 4,835-m-high basaltic stratovolcano has produced frequent moderate-volume explosive and effusive eruptions without major periods of inactivity. More than 100 flank eruptions have occurred during the past roughly 3,000 years, with most lateral craters and cones occurring on the NE (seen here) and SE flanks of the conical volcano at altitudes of 500-3,600 m. Photo by E.Y. Zhdanova (courtesy of Oleg Volynets, Institute of Volcanology, Petropavlovsk). Source: GVP.
Grouping on the Global Map
Map of Volcanoes
Map of Volcanoes. Background Map: University of Michigan. Designed and enhanced by Fire Earth Blog. Click image to enlarge.
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Posted in Bamus Volcano, Klyuchevskaya Volcano, Ulawun Volcano, volcanic eruption, volcanic plume, volcanism, volcano | Tagged: PNG volcanoes, Volcanic Activity Satellite Images, Volcano Satellite Images | Leave a Comment »
Posted by msrb on June 10, 2010
Summary of Weekly Volcanic Activity Report
[Source: SI/USGS]
New Activity/Unrest (2 June – 8 June 2010)
- Bezymianny, Central Kamchatka (Russia) [Group J]
- Cleveland, Chuginadak Island [Group H]
- Pacaya, Guatemala [Group F]
- Taal, Luzon [Group K]
- Tiatia, Kunashir Island (Kuril Islands, Russia) [Group J]
- Tungurahua, Ecuador [Group D]
- Ulawun, New Britain [Group K]
Map of Volcanoes. Background Map: University of Michigan. Designed and enhanced by Fire Earth Blog. Click image to enlarge.
Ongoing Volcanic Activity:
- Batu Tara, Komba Island (Indonesia)
- Dukono, Halmahera
- Eyjafjallajökull, Southern Iceland
- Karymsky, Eastern Kamchatka (Russia)
- Kilauea, Hawaii
- Kliuchevskoi, Central Kamchatka (Russia)
- Popocatépetl, México
- Sakura-jima, Kyushu
- Santa María, Guatemala
- Shiveluch, Central Kamchatka (Russia)
For additional information, see source.
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Posted in volcanic activity, volcanic eruption, Volcanic Explosions, volcanic hazard, volcanism, volcano | Tagged: Bezymianny, Cleveland, Pacaya, Taal, Tiatia volcano | Leave a Comment »
Posted by feww on June 8, 2010
Taal Volcano on Alert Level 2
The Philippine Institute of Volcanology and Seismology (Phivolcs) has just raised the alert level of Taal Volcano from Level 1 to Level 2.
The volcano has shown increased seismic activity since late April, said Allan Loza of the Phivolcs Taal Volcano Observatory.
Phivolcs recorded 2 high frequency volcanic earthquakes over the past 24 hours and reported an increase in the size of earthquakes over the period.
“Initial result of precise leveling survey conducted yesterday at the southeast side of the volcano island showed further inflation by 3.0mm, ” Phivolcs said.
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Posted in volcani hazard, volcanic eruptions, volcanism, volcano | Tagged: Philippines volcanoes, Taal Volcano | Leave a Comment »
Posted by feww on May 2, 2010
Eyjafjallajökull Quietly Erupting
Volcanic Activity Report: May 02, 2010
Icelandic Met Office reported plume elevations and lava discharge levels close to the average activity during the past week. Lava is till flowing in a northerly direction from the crater and cascading down the Gígjökull glacier. “Today’s explosive activity and ash production represents a fraction of conditions during the height of the eruption (14-17 April). Presently, there are no measurable indications that the eruption is about to end.”
See also joint Status Report released by Icelandic Meteorological Office and Institute of Earth Sciences, University of Iceland (PDF file).
No new photo was available, as of posting, neither at the Institute of Earth Sciences nor Icelandic Met Office websites, presumably to prevent commercial exploitation [sic.]
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Serial No 1,659. Starting April 2010, each entry on this blog has a unique serial number. If any of the numbers are missing, it may mean that the corresponding entry has been blocked by Google/the authorities in your country. Please drop us a line if you detect any anomaly/missing number(s).
Posted in Gígjökull glacier, Iceland volcano, volcanism, volcano, Volcano Status | Tagged: Eyjafjallajökull eruption, Eyjafjallajökull Eruption Update MAY 2 | Leave a Comment »
Posted by feww on April 10, 2010
Serial No 1,556. Starting April 2010, each entry on this blog has a unique serial number. If any of the numbers are missing, it may mean that the corresponding entry has been blocked by the authorities/Google in your country. Please drop us a line if you detect any anomaly/missing number(s).
Volcanoes and Glaciers Don’t Mix
Satellite Images of Klyuchevskaya Volcano
The 4,750-meter Klyuchevskaya is the highest and most active volcano on Kamchatka Peninsula, NE Russia.
Klyuchevskaya Volcano is still erupting. Natural-color satellite image by MODIS was acquired April 7, 2010. A plume of ash about 370 meters was reported above the crater summit. The dark tint seen on the lower slopes of the Shiveluch Volcano, located to the northeast of Klyuchevskaya, is ash deposits from an earlier eruption. Source: NASA/EO.
A plume towered above the summit of Klyuchevskaya Volcano on Russia’s Kamchatka Peninsula on February 13, 2010, when the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA’s Terra satellite captured this false-color image. Directly over the summit, the plume is bright white, suggesting more steam than ash. The steep, cone-shaped volcano was shrouded in snow, and the rugged terrain was being illuminated from the south, which created dramatic shadows to the north and west. Both the mountain itself and the plume are casting a shadow (brown area) on the western and northern flanks of the volcano. Within this shadow, black rivulets of lava are visible on the northwest slopes. (Date: 13 February 2010). Image and caption: NASA
Klyuchevskaya’s most recent phase of eruptive activity began in January 2005. On February 21, the Kamchatkan Volcanic Eruption Response Team reported a lava flow down the northern flank of the volcano that melted a large portion of the Ehrman Glacier, the largest of several small glaciers capping the summit and flanks of the volcano. Image captured by ASTER on NASA’s Terra satellite February 24, 2004. Source: NASA/EO.
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Posted in Kamchatka peninsula, Klyuchevskaya Volcano, Shiveluch volcano, volcanism, volcano | Tagged: Ehrman Glacier, glaciers, Klyuchevskaya, volcanoes | Leave a Comment »
Posted by feww on March 27, 2010
Hvannárgil Canyon Lava Fall
Photo Credit: RAX /Ragnar Axelsson/via MBL. Image may be subject to copyright.
The Lava Fall. Photo by Páll Stefánsson. Image may be subject to copyright.
Lava from Fimmvörduháls crater on a mountain pass in south Iceland has changed direction the Hrunagil canyon into the Hvannárgil canyon forming a spectacular 100-meter high lava fall.
“There is a continuous flow of lava,” geophysicist Magnús Tumi Gudmundsson told Morgunbladid. The lava flow now extends to about one kilometer from the fissure.
Another Disappointing Image from NASA
A natural-color satellite image showing … The image was acquired on March 24, 2010, by the Advanced Land Imager (ALI) aboard NASA’s Earth Observing-1 (EO-1) satellite. Credit: NASA
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Posted in Eyjafjallajökull glacier, Eyjafjöll, iceland volcanoes, Icelandic volcano, volcanism | Tagged: Eyjafjöll Eruption, Fimmvörduháls, Hrunagil canyon, Hvannárgil Canyon, volcano Webcams | 5 Comments »
