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Alaid

Stratovulcano · Russia · 2285 m

An ash plume rises above Alaid on 30 April 1981, at the peak of an eruption that began on 27 April (seen here from the N). The plume extended 2,000 km to the SE. The volcano has a 1.5-km-wide summit crater and numerous cones across the lower flanks. Explosive eruptions in 1790 and 1981 were among the largest in the Kuril Islands.
An ash plume rises above Alaid on 30 April 1981, at the peak of an eruption that began on 27 April (seen here from the N). The plume extended 2,000 km to the SE. The volcano has a 1.5-km-wide summit crater and numerous cones across the lower flanks. Explosive eruptions in 1790 and 1981 were among the largest in the Kuril Islands. · Foto: Photo courtesy of Anatoli Khrenov, 1981 (Institute of Volcanology, Petropavlovsk). · Wikimedia Commons
Tipo
Stratovulcano
Paese
Russia
Regione
Northwestern Pacific Volcanic Regions / Kuril Volcanic Arc
Altitudine
2285 m
Coordinate
50.861, 155.565
Ultima eruzione
2022
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Basalt / Picro-Basalt
Sintesi geologica

The highest and northernmost volcano of the Kuril Islands, Alaid is a symmetrical stratovolcano when viewed from the north, but has a 1.5-km-wide summit crater that is breached open to the south. This basaltic to basaltic andesite volcano is the northernmost of a chain constructed west of the main Kuril archipelago. Numerous pyroclastic cones are present the lower flanks, particularly on the NW and SE sides, including an offshore cone formed during the 1933-34 eruption. Strong explosive eruptions have occurred from the summit crater beginning in the 18th century. Reports of eruptions in 1770, 1789, 1821, 1829, 1843, 1848, and 1858 were considered incorrect by Gorshkov (1970). Explosive eruptions in 1790 and 1981 were among the largest reported in the Kuril Islands.

Sintesi da Wikipedia

Riassunto in inglese

Alaid, also called Atlasov due to its location or Araido in Japanese, is a volcano on Atlasov Island of the Kuril Islands, Russia. It is the northernmost volcano of the islands, and one of the most active. The height is disputed between 2,285 metres (7,497 ft) to 2,339 metres (7,674 ft) tall. It is the highest peak of the Kuril Islands.

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Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
1790~1813 · 1 eruzioni · VEI max. 41836~1860 · 1 eruzioni · VEI max. 31860~1883 · 1 eruzioni · VEI max. 31883~1906 · 1 eruzioni · VEI max. 21929~1952 · 1 eruzioni · VEI max. 21952~1976 · 2 eruzioni · VEI max. 31976~1999 · 6 eruzioni · VEI max. 41999~2022 · 4 eruzioni · VEI max. 217901836190619521999

Cronologia dettagliata

  1. 2022VEI 2Osservata
    2022-09-10 – 2022-11-26
  2. 2018VEI 1Osservata
    2018-08-21 – 2018-08-21
    Summit crater
  3. 2015VEI 1Osservata
    2015-09-29 – 2016-08-11
    Summit crater
  4. 2012VEI 2Osservata
    2012-10-05 – 2012-12-12
    Summit crater
  5. 1997VEI ?Stima geologica
    1997-08-23 – 1997-08-23
  6. 1996VEI 2Osservata
    1996-12-03 – In corso
  7. 1986VEI 2Osservata
    1986-05-25 – 1986-05-28
  8. 1982VEI 2Osservata
    1982-03-29 – 1982-03-29
  9. 1981VEI 4Osservata
    1981-04-27 – 1981-06-05
  10. 1981VEI 2Osservata
    1981-11-25 – In corso
  11. 1973VEI ?Stima geologica
    1973-07-02 – In corso
  12. 1972VEI 3Osservata
    1972-06-18 – 1972-09-11
    NW foot
  13. 1933VEI 2Osservata
    1933-11-13 – 1934-08
    East submarine flank (Taketomi)
  14. 1894VEI 2Osservata
    1894 – In corso
  15. 1860VEI 3Osservata
    1860-07-07 – 1860-07-09
  16. 1854VEI 3Osservata
    1854-06-27 – In corso
  17. 1790VEI 4Osservata
    1790 – 1793

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