Latest news from Sarychev Peak:
Thursday, Aug 06, 2009
Sarychev volcano erupted violently starting 11 June 2009 until mid-end of June, producing a series of sub-plinian eruptions sending large gas and ash plumes to 10-14 km elevation, which drifted westward across the northern hemisphere. The most powerful eruptions occurred between June 11-16. No large ash explosions were noted after 16 June, but Sarychev continues to erupt and produce smaller gas and ash plumes. ... [more]
This once-in-a-lifetime spectacular image was shot from the International Space Station on June 12, 2009 and shows an early stage of one of the larger eruptions at Sarychev Volcano.
The eruption plume is composed of brown ash and white steam. The vigorously rising plume gives the steam a bubble-like appearance; the surrounding atmosphere has been shoved up by the shock wave of the eruption. The smooth white cloud on top may be water condensation that resulted from rapid rising and cooling of the air mass above the ash column.
Caption credit: M. Justin Wilkinson, NASA-JSC.
Image credit: Expedition 20 crew, NASA’s Earth Observatory
http://earthobservatory.nasa.gov/IOTD/view.php?id=38985 Eruption of Sarychev from space photo: Nasa's Earth Observatory with detailed interpretation of the above picture.
Sarychev Peak volcanoSarychev volcano is one of the most active volcanoes in the Kuril Island chain streching between Kamchatka and Japan. Large explosive eruptions occured between 11-19 June 2009, sending huge ash coulds to altitudes of up to 14 km, and forcing many flights with routes accross the northern Pacific to be cancelled or diverted.
Background:Sarychev Peak, one of the most active volcanoes of the Kuril Islands, occupies the NW end of Matua Island in the central Kuriles. The andesitic central cone was constructed within a 3-3.5 km wide caldera, whose rim is exposed only on the SW side. A dramatic 250-m-wide, very steep-walled crater with a jagged rim caps the volcano. The substantially higher SE rim forms the 1496 m high point of the island. Fresh-looking lava flows descend all sides of Sarychev Peak and often form capes along the coast. Much of the lower-angle outer flanks of the volcano are overlain by pyroclastic-flow deposits. Eruptions have been recorded since the 1760's and include both quiet lava effusion and violent explosions.
The largest historical eruption of Sarychev Peak began on June, 11, 2009 and produced ash plumes rising to up to 14 kms and pyroclastic flows that reached the sea. The ash plumes drifting westwards at altitudes typical for commercial airplanes forced many flights with routes accross the northern Pacific to be cancelled or diverted.
2009 subplinian eruption
Sarychev volcano has a spectacular eruption on 12-15 June 2009. A powerful explosion produced an sub-plinian eruption column 12-18 km tall which injected large amounts of ash into the stratosphere. The plume extended 200 km to the south-west and 105 km to the south-east. The eruption was mainly observed through satellites, because Sarychev is not monitored with ground-based instruments. The eruption intensified on 14 June, when the column reached 40,000 ft (13 km), and on 15 June, when it peaked at 54,000 ft (18 km) altitude.
A new eruption began at Sarychev volcano on 14 January 1989. The eruption was preceded by a magnitude 6.2 earthquake near nearby Simushir Island.
During an overflight on 2 November 1986, a lava flow was observed extending 150 m south of the crater.
Ash emissions were observed from Sarychev Peak in September 1976.
A series of explosions destroyed the old lava dome. Ash plumes extended 300 km to the NNE. At the end of the eruption, lava flows occurred.
Small ash eruptions occurred from Sarychev volcano.
A large eruption occurred in 1946. Big bombs were ejected as far as 7 km from the crater and the height of the ash emissions reached more than 6 km.
The eruption in 1930 was a large explosive event lasting 13 hours.
The eruption of Sarychev in 1928 was explosive.
During the eruption in 1878-79, a lava flow was erupted.
The eruption in 1760 was one of the largest of Sarychev Peak in historic times.