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Barren Island, a possession of India in the Andaman Sea about 135 km NE of Port Blair in the Andaman Islands, is the only historically active volcano along the N-S-trending volcanic arc extending between Sumatra and Burma (Myanmar). The 354-m-high island is the emergent summit of a volcano that rises from a depth of about 2250 m.
A new eruption is occurring at the remote and India's only active volcano. ...more
Since mid January, pronounced heat signals - the strongest since May 2016 - have been detected on satellite imagery coming from the summit of the volcano. A team of Indian researchers from the Goa-based National Institute of Oceanography (NIO) visited the island on 23 and 26 Jan this year and confirmed new eruptive activity: [less]
Steam (and ash?) plume from Barren Island on 1 March (red spot is a thermal anomaly detected by the VIIRS radiometer onboard NASA's Suomi NPP)
Weak eruptive activity continues at the summit vent of the remote and rarely directly observed volcano, satellite data indicates. ...more
A thermal hot spot has been present regularly during recent weeks, and on cloud-free days, a steam-gas plume can often be seen drifting from the island that sometimes contains some ash. What exactly the activity is like is difficult to say, but most likely is mild strombolian activity and/or the occasional presence of a (very small) lava lake in the summit crater.
Ash and steam plume from Barren Island on 16 Nov (Landsat 8 image, annotated by Culture Volcan)
With all likelihood, the volcano continues to be in eruption. It is very remote and rarely directly observed, but satellite imagery regularly show albeit weak thermal signals - again present more or less continuously since August and more frequent since October this year. ...more
A satellite image from 16 Nov shows a volcanic plume stretching several tens of kilometers from the volcano.
An ash plume was reported this morning, at estimated 5,000 ft (1.5 km) altitude, extending 50 km to the east from the island (VAAC Darwin). This suggests that a new phase of activity is occurring at the volcano. ...more
A moderately strong hot spot also visible on satellite data since mid August. [less]
As the Culture Volcan blog pointed out, a weak thermal anomaly was detected on satellite data above the volcano yesterday. The hot spot is weak, but could indicate some sort of activity occurring at the volcano. What could be a plume is visible on other satellite imagery, but for now, there is no confirmation of volcanic activity.
Gas and ash plume from Barren Island today (MODIS/Terra, NASA)
Intermittent eruptive activity continues on the small remote island next to the Andaman island group. A small steam and ash plume and a thermal hot spot can be seen on today's and yesterday's satellite images. ...more
Without (the rare) direct observations (usually by Indian navy), it is impossible to know exactly what type of activity is going on at the moment. It could be intermittent strombolian-type explosions, and/or lava flows or even the formation of a small temporary lava lake. [less]
MODIS hot spot data (past 7 days) for Brren Island volcano (ModVolc, Univ. Hawaii)
A significant thermal anomaly remains present at the volcano which is likely in some sort of eruptive activity (lava flows?). However, no plumes could be detected on satellite imagery. An aerial survey by the Indian Navy could give more clues what is going on.
MODIS hot spot data (past 7 days) for Barren Island volcano (ModVolc, Univ. Hawaii)
A new eruption occurred this week. This was confirmed by the Indian Navy (via twitter) who reported "smoke" and lava seen on the island from a surveillance plane. A large hot spot is visible on recent MODIS satellite data on the remote volcanic island, located in the Andaman Islands archipelago. ...more
No details about the nature of the eruption are available at the moment, but the description and distribution of the hot spots suggests that it might be an explosive-effusive eruption with lava flows (possibly reaching the sea. A satellite image from yesterday shows what likely is a steam/gas plume, but doesn't allow to recognize details.
Terra satellite image from yesterday showing Barren Island with what might be a small eruption plume (NASA)
A new eruption seems to have started. An ash plume rising to 20,000 ft (6 km) altitude and drifting 120 nautical miles to the SW was reported last night by VAAC Darwin. The aviation color code was raised to RED.
Barren Island remains active. Pilots frequently observe ash plumes at around flight level 100. The volcano continues to emit small to moderate amounts of ash forming plumes travelling beneath 10-15000 ft (ca. 3-4,5 km a.s.l.) and extending for about 20 nm (30-35 km). -->More on Barren Island
The volcano on Barren Island is still very active as news reports. The height of the cone has increased by about 50 metres during the past nine months since its eruption started last May. A team of scientists from India landed on the island to study the recent eruption. Lava flows have covered the entire north-western face of the island destroying the lone landing site. ->More on Barren Island
According to Indian news sources, the eruption is going on and has intensified. Lava fountaining, and strombolian explosions are ejecting material to up to 100m above the new vent, which has formed at the SW rim of the existent crater and might construct a new cone. A team of scientists from the Geological Survey of India (GSI) visited the eruption site on June 13.
The eruption at Barren Island continues with moderate strombolian activity. According to the Indian press, the authorities of the Andaman islands are planning to arrange organized sight-seing boat trips to Barren Island in order to give tourists the unique opportunity to watch Inddia's only active volcano from the sea, as long as the eruptino still continues. The cost of the overnight-trip from Port Blair, about 140 away has yet to be fixed.
After no observation was possible for some days due to heavy monsoon rains, it has been confirmed that the eruptino is continuing. Pilots from aircraft have observed small lava fountains and ash plumes.
India's only active volcano, the tiny uninhabited Barren island in the Dec. 2004 tsunami-hit Andaman and Nicobar archipelago has started an eruption as news reports state after an Indian coast guard ship had sighted a thick plume of smoke.
Barren Island, a possession of India in the Andaman Sea about 135 km NE of Port Blair in the Andaman Islands, is the only historically active volcano along the N-S-trending volcanic arc extending between Sumatra and Burma (Myanmar). The 354-m-high island is the emergent summit of a volcano that rises from a depth of about 2250 m. The small, uninhabited 3-km-wide island contains a roughly 2-km-wide caldera with walls 250-350 m high. The caldera, which is open to the sea on the west, was created during a major explosive eruption in the late Pleistocene that produced pyroclastic-flow and -surge deposits. The morphology of a fresh pyroclastic cone that was constructed in the center of the caldera has varied during the course of historical eruptions. Lava flows fill much of the caldera floor and have reached the sea along the western coast during eruptions in the 19th century and more recently in 1991 and 1995.
--- Source:GVP, Smithsonian Institution
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The term for all fine-grained volcanic products fragmented during explosive eruptions.
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