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Dempo

Stratovulcano · Indonesia · 3142 m

The youngest crater of Dempo volcano, at the WNW end of a series of six partially overlapping craters at the summit, contains a 400-m-wide crater lake that has been the source of frequent phreatic eruptions during historical time. A seventh smaller crater is located on the upper N flank. Dempo is one of Sumatra's most active volcanoes, frequently producing small-to-moderate explosive eruptions.
The youngest crater of Dempo volcano, at the WNW end of a series of six partially overlapping craters at the summit, contains a 400-m-wide crater lake that has been the source of frequent phreatic eruptions during historical time. A seventh smaller crater is located on the upper N flank. Dempo is one of Sumatra's most active volcanoes, frequently producing small-to-moderate explosive eruptions. · Foto: Photo by Ruska Hadian, 1989 (Volcanological Survey of Indonesia). · Wikimedia Commons
Tipo
Stratovulcano
Paese
Indonesia
Regione
Sunda-Banda Volcanic Regions / Sunda Volcanic Arc
Altitudine
3142 m
Coordinate
-4.016, 103.121
Ultima eruzione
2025
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Andesite / Basaltic Andesite
Sintesi geologica

Dempo is a stratovolcano that rises above the Pasumah Plain of SE Sumatra. The andesitic complex has two main peaks, Gunung Dempo and Gunung Marapi, constructed near the SE rim of a 3-km-wide amphitheater open to the north. The high point of the older Gunung Dempo crater rim is slightly lower, and lies at the SE end of the summit complex. The taller Marapi cone was constructed within the older crater. Remnants of seven craters are found at or near the summit, with volcanism migrating WNW over time. The active 750 x 1,100 m active crater cuts the NW side of the Marapi cone and contains a 400-m-wide lake at the far NW end. Eruptions recorded since 1817 have been small-to-moderate explosions that produced local ashfall.

Sintesi da Wikipedia

Riassunto in inglese

Mount Dempo is the highest stratovolcano in South Sumatra province that rises above Pasumah Plain near Pagar Alam and adjacent with Bengkulu Province. Seven craters are found around the summit. A 400-metre (1,300 ft) wide lake is found at the north-west end of the crater complex.

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Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
1817~1838 · 1 eruzioni · VEI max. 21838~1859 · 2 eruzioni · VEI max. 21859~1879 · 1 eruzioni · VEI max. 21879~1900 · 7 eruzioni · VEI max. 21900~1921 · 2 eruzioni · VEI max. 21921~1942 · 8 eruzioni · VEI max. 21963~1983 · 3 eruzioni · VEI max. 21983~2004 · 1 eruzioni · VEI max. 12004~2025 · 8 eruzioni · VEI max. 218171859192119632004

Cronologia dettagliata

  1. 2025VEI ?Osservata
    2025-08-07 – 2025-08-29
  2. 2024VEI 1Osservata
    2024-05-27 – 2024-05-31
  3. 2024VEI 1Osservata
    2024-11-23 – 2025-02-02
  4. 2023VEI 2Osservata
    2023-07-25 – 2023-08-21
  5. 2022VEI 1Osservata
    2022-05-31 – 2022-05-31
  6. 2017VEI 1Osservata
    2017-11-09 – 2017-11-09
    Summit crater
  7. 2009VEI 1Osservata
    2009-01-01 – 2009-01-01
  8. 2006VEI 1Osservata
    2006-09-25 – 2006-09-25
  9. 1994VEI 1Osservata
    1994-10-16 – 1994-10-16
  10. 1974VEI 2Osservata
    1974-02-26 – 1974-10-20
  11. 1973VEI 2Osservata
    1973-01-24 – 1973-01-25
  12. 1964VEI 2Osservata
    1964-02-14 – 1964-02-14
  13. 1940VEI 2Osservata
    1940-07 – In corso
  14. 1939VEI 2Osservata
    1939-07-18 – 1939-07-30
  15. 1939VEI 2Osservata
    1939-12-19 – 1940-02-21
  16. 1936VEI 2Osservata
    1936-11-26 – 1936-11-27
  17. 1934VEI 2Osservata
    1934-01-24 – 1934-04-25
  18. 1926VEI 2Osservata
    1926-04-22 – 1926-04-24
  19. 1923VEI 1Osservata
    1923-05-19 – 1923-05-19
  20. 1921VEI 1Osservata
    1921-04 – 1921-04
  21. 1908VEI 2Osservata
    1908-02-16 – 1908-02-17
  22. 1905VEI 0Osservata
    1905 – In corso
  23. 1900VEI 2Osservata
    1900-06-04 – 1900-06-04
  24. 1900VEI 2Osservata
    1900-10-26 – 1900-10-27
  25. 1895VEI 2Osservata
    1895-07-02 – 1895-09-30
  26. 1884VEI 2Osservata
    1884-06 – 1884-07
  27. 1881VEI 2Osservata
    1881-02-16 – In corso
  28. 1881VEI 2Osservata
    1881-12 – 1881-12
  29. 1880VEI 2Osservata
    1880-05 – In corso
  30. 1879VEI 2Osservata
    1879-05-18 – In corso
  31. 1853VEI 2Osservata
    1853-01-01 – In corso
  32. 1839VEI 2Osservata
    1839 – In corso
  33. 1817VEI 2Osservata
    1817-12-31 – In corso

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