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Shiveluch volcano satellite image by (c) Google
Shiveluch volcano satellite image by (c) Google
Шивелуч вулкан
Стратовулкан 3283 m (10,771 ft)
Камчатка, 56.65°N / 161.36°E
Текущее состояние: извергающийся (4 из 5)
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Шивелуч Вулкан-извержения:
1739(?), 1800(?), 1854 (Plinian eruption), 1879-83, 1897-98, 1905, 1928-29, 1930, 1944-50, 1964 (sub-Plinian, large dome collapse and debris flow), 1980-81, 1984, 1985, 1986-88, 1988, 1989 1990-94, 1997, 1998, 1999, 1999-ongoing
Типичный извержения стиль:
Highly explosive. Construction of lava domes and large pyroclastic flows caused by dome collapse. One of Kamchatka's largest and most active volcanoes.
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Вулкан Шивелуч (Камчатка): активность, новости

Sheveluch volcano (Kamchatka, Russia): new lava dome

Чт, 1 окт 2020, 14:43
14:43 PM | ПЇЅПЇЅПЇЅПЇЅПЇЅ: MARTIN
A new lava dome Dolphin at Sheveluch volcano (image: Yury Demianchuk/volkstat.ru)
A new lava dome Dolphin at Sheveluch volcano (image: Yury Demianchuk/volkstat.ru)
Yury Demianchuk from the volcanological observatory reported that visual observations on 28 September confirmed that a new lava dome had grown on the NE side of the dome complex. The extruded lava dome, about 100 m tall, stands out with a spectacularly and highly unusual, smooth, egg-like shape.
This extremely smooth, curved outer surface indicates that the magma had been oozing out at a very steady flow rate, without exceeding the limits of plastic deformation of the erupted viscous lava, i.e. not causing any ruptures as is usually the case with lava domes, giving them often a rugged outer shape (as the older parts of Sheveluch's dome into which the new egg-like structure has now grown).
The new dome was first noticed on 23 May this year, indicating that most of it has grown during the past 3-4 months.
Volcanologists estimate that the lava of the new dome is of dacitic composition (a type of magma rich in silica and very viscous). They also dubbed it the "Dolphin".
Source: Kamchatka Volcanic Eruption Response Team volcano activity update 1 October 2020
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