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Karthala

Vulcano a scudo · Union of the Comoros · 2350 m

The greenish ~300-m-diameter Chahalé crater lake in the summit caldera complex of Karthala volcano is seen here in August 2003 before an eruption in April 2005. The photo, taken by an automatic camera located at the summit, looks from the NNE towards the SSW. Karthala is the southernmost and largest of the two shield volcanoes forming Grand Comore Island (also known as Ngazidja Island) and contains a 3 x 4 km summit caldera generated by repeated collapse. It has elongated rift zones extending to the NNW and SE.
The greenish ~300-m-diameter Chahalé crater lake in the summit caldera complex of Karthala volcano is seen here in August 2003 before an eruption in April 2005. The photo, taken by an automatic camera located at the summit, looks from the NNE towards the SSW. Karthala is the southernmost and largest of the two shield volcanoes forming Grand Comore Island (also known as Ngazidja Island) and contains a 3 x 4 km summit caldera generated by repeated collapse. It has elongated rift zones extending to the NNW and SE. · Foto: Photo by Nicolas Villenueve, 2003 (Université de la Réunion). · Wikimedia Commons
Tipo
Vulcano a scudo
Paese
Union of the Comoros
Regione
Somalian-Antarctic Volcanic Regions / Madagascar-Comoros Volcanic Province
Altitudine
2350 m
Coordinate
-11.766, 43.364
Ultima eruzione
2007
Contesto tettonico
Intraplate / Oceanic crust (< 15 km)
Forma vulcanica
Shield
Roccia principale
Basalt / Picro-Basalt
Sintesi geologica

The southernmost and largest of the two shield volcanoes forming Grand Comore Island (also known as Ngazidja Island), Karthala has two overlapping 3-4 km summit calderas generated by repeated collapse. Elongated rift zones extend NNW and SE from the summit of the basaltic shield, which has an asymmetrical profile that is steeper to the S. The lower SE rift zone forms the Massif du Badjini, a peninsula at the SE tip of the island. More than twenty eruptions have been recorded since the 19th century from the summit caldera and vents on the N and S flanks, producing many lava flows that reached the sea on both sides of the island. An 1860 CE lava flow from the summit caldera traveled ~13 km to the NW, reaching the W coast to the N of the capital city of Moroni.

Sintesi da Wikipedia

Il Karthala è un vulcano attivo e rappresenta il punto più alto delle Comore, con un'altitudine di 2361 metri sul livello del mare.

Wikipedia · CC BY-SA · Leggi l'articolo completo →

Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
1050~1146 · 1 eruzioni · VEI max. ?1720~1816 · 2 eruzioni · VEI max. ?1816~1911 · 19 eruzioni · VEI max. 21911~2007 · 13 eruzioni · VEI max. 310501241152917201911

Cronologia dettagliata

  1. 2007VEI 2Osservata
    2007-01-12 – 2007-01-15
    Chahalé crater
  2. 2006VEI 0Osservata
    2006-05-28 – 2006-06-03
    Chahalé crater
  3. 2005VEI 2Osservata
    2005-04-16 – 2005-04-18
    Chahalé crater
  4. 2005VEI 3Osservata
    2005-11-24 – 2005-12-08
    Chahalé crater
  5. 1991VEI 2Osservata
    1991-07-11 – 1991-07-11
    Choungou-Chahalé (Choungou-Chamadji)
  6. 1977VEI 1Osservata
    1977-04-05 – 1977-04-10
    SW flank
  7. 1972VEI 1Osservata
    1972-09-08 – 1972-10-05
    North end of summit crater
  8. 1965VEI 2Osservata
    1965-07-12 – 1965-07-12
    Between Changomeni & Chahalé Craters
  9. 1956VEI 2Osservata
    1956-06-01 – In corso
    Chahalé crater
  10. 1952VEI 2Osservata
    1952-02-10 – 1952-02-12
    Chahalé crater
  11. 1948VEI 2Osservata
    1948-04-22 – 1948-06-16
    Cheminee Nord (Changomeni)
  12. 1928 (±2 anni)VEI 1Osservata
    1928 – In corso
  13. 1918VEI 3Osservata
    1918-08-11 – 1918-08-26
    NE flank, Changomeni, NE Chahalé
  14. 1910VEI 1Osservata
    1910-03 – 1910-03
    North flank (1300 m)
  15. 1904VEI 2Osservata
    1904-02-25 – 1904-04
    North flank (1300 m)
  16. 1883VEI 2Osservata
    1883-03 – 1884
    SE flank
  17. 1880VEI 2Osservata
    1880 – In corso
    SE flank (Badjini Massif)
  18. 1876VEI 0Osservata
    1876 – In corso
    SE flank (Badjini Massif)
  19. 1872VEI 2Osservata
    1872 – In corso
    NW flank (Diboini Plateau)
  20. 1865VEI 2Osservata
    1865 – In corso
  21. 1862VEI 2Stima geologica
    1862 – In corso
  22. 1860VEI 0Osservata
    1860-12-29 – In corso
    SE flank (Badjini Massif, 1200 m)
  23. 1859VEI 2Osservata
    1859 – In corso
    NW flank (Diboini Plateau fissures)
  24. 1858VEI 2Osservata
    1858 – In corso
    Upper NE flank (2200 m)
  25. 1857VEI 2Osservata
    1857 – In corso
    SE flank (Badjini Massif) & summit
  26. 1855VEI 2Osservata
    1855-07-01 – In corso
    SE flank
  27. 1850VEI 0Osservata
    1850 – In corso
    West-SW flank (400 m)
  28. 1848VEI 0Osservata
    1848 – In corso
    SE flank
  29. 1833VEI ?Osservata
    1833 – In corso
    Summit caldera ?
  30. 1830VEI 2Osservata
    1830 – In corso
  31. 1828VEI 2Osservata
    1828-05 – In corso
  32. 1821VEI ?Osservata
    1821-12-31 – In corso
  33. 1814VEI ?Osservata
    1814-12-31 – In corso
  34. 1808VEI ?Osservata
    1808 – In corso
  35. 1050 (±150 anni)VEI ?Osservata
    1050 – In corso

Link esterni

⚠ Solo a scopo informativo. Non adatto a situazioni di emergenza.