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Ruapehu

Stratovulcano · New Zealand · 2797 m

Ruapehu volcano, seen here from the south, forms a massif composed of at least four overlapping volcanic edifices. Located at the southern end of the Taupo volcanic zone, it contains an active crater lake near the summit. Phreatic explosions have produced mudflows that have affected ski areas on the upper flanks and river valleys below the volcano.
Ruapehu volcano, seen here from the south, forms a massif composed of at least four overlapping volcanic edifices. Located at the southern end of the Taupo volcanic zone, it contains an active crater lake near the summit. Phreatic explosions have produced mudflows that have affected ski areas on the upper flanks and river valleys below the volcano. · Foto: Photo by Bruce Houghton, 1980 (Wairakei Research Center). · Wikimedia Commons
Tipo
Stratovulcano
Paese
New Zealand
Regione
Tonga-Kermadec Volcanic Regions / Taupo Volcanic Arc
Altitudine
2797 m
Coordinate
-39.280, 175.570
Ultima eruzione
2007
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Andesite / Basaltic Andesite
Sintesi geologica

Ruapehu, one of New Zealand's most active volcanoes, is a complex stratovolcano constructed during at least four cone-building episodes dating back to about 200,000 years ago. The dominantly andesitic 110 km3 volcanic massif is elongated in a NNE-SSW direction and surrounded by another 100 km3 ring plain of volcaniclastic debris, including the NW-flank Murimoto debris-avalanche deposit. A series of subplinian eruptions took place between about 22,600 and 10,000 years ago, but pyroclastic flows have been infrequent. The broad summait area and flank contain at least six vents active during the Holocene. Frequent mild-to-moderate explosive eruptions have been recorded from the Te Wai a-Moe (Crater Lake) vent, and tephra characteristics suggest that the crater lake may have formed as recently as 3,000 years ago. Lahars resulting from phreatic eruptions at the summit crater lake are a hazard to a ski area on the upper flanks and lower river valleys.

Sintesi da Wikipedia

Il Ruapehu è una montagna della Nuova Zelanda, coi suoi 2 797 metri s.l.m. è la cima più alta dell'Isola del Nord. Situato nel Parco nazionale del Tongariro è un vulcano attivo con un lago nel cratere alla sua sommità.

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
9850 BCE~9455 BCE · 2 eruzioni · VEI max. ?7874 BCE~7479 BCE · 2 eruzioni · VEI max. 45898 BCE~5502 BCE · 1 eruzioni · VEI max. ?821~1217 · 1 eruzioni · VEI max. 31612~2007 · 60 eruzioni · VEI max. 39850 BCE7083 BCE3921 BCE1155 BCE1612

Cronologia dettagliata

  1. 2007VEI 1Osservata
    2007-09-25 – 2007-09-25
  2. 2006VEI 1Osservata
    2006-10-04 – 2006-10-04
  3. 1997VEI 1Osservata
    1997-10-09 – 1997-10-18
  4. 1996VEI 0Stima geologica
    1996-03-21 – In corso
  5. 1996VEI 3Osservata
    1996-06-16 – 1996-09-01
  6. 1995VEI 3Osservata
    1995-01-11 – 1995-11-09
  7. 1994VEI 1Stima geologica
    1994-02-12 – 1994-04-01
  8. 1992VEI 1Osservata
    1992-02-08 – 1992-03-06
  9. 1991VEI 1Osservata
    1991-07-05 – 1991-07-14
  10. 1990VEI 1Osservata
    1990-01-07 – 1990-01-26
  11. 1990VEI 0Osservata
    1990-06-17 – 1990-09-08
  12. 1989VEI 1Osservata
    1989-07-01 – 1989-09-20
  13. 1988VEI 1Osservata
    1988-03-20 – 1988-05-25
  14. 1988VEI 1Osservata
    1988-12-08 – 1989-03-05
  15. 1987VEI 1Osservata
    1987-08-24 – 1987-08-30
  16. 1986VEI 1Osservata
    1986-02-08 – 1986-02-09
  17. 1985VEI 1Osservata
    1985-05-21 – 1985-06-09
  18. 1985VEI 1Osservata
    1985-11-15 – 1985-11-15
  19. 1984VEI 1Osservata
    1984-04-02 – In corso
  20. 1984VEI 1Osservata
    1984-10-25 – 1984-12-16
  21. 1981VEI 1Osservata
    1981-10-25 – 1982-04-12
  22. 1980VEI 1Osservata
    1980-01-15 – 1980-03-27
  23. 1980VEI 1Osservata
    1980-10-18 – 1980-11-03
  24. 1979VEI 1Osservata
    1979-06-30 – 1979-07-15
  25. 1977VEI 2Osservata
    1977-07-16 – 1979-01-17
  26. 1976VEI 1Osservata
    1976-03-06 – 1976-03-06
  27. 1976VEI 1Osservata
    1976-09-12 – 1976-11-22
  28. 1975VEI 2Osservata
    1975-04-24 – 1975-04-27
  29. 1975VEI 1Osservata
    1975-10-17 – 1975-10-17
  30. 1973VEI 1Osservata
    1973-10-31 – 1974-10-25
  31. 1972VEI 1Osservata
    1972-10-22 – 1973-01-10
  32. 1971VEI 2Osservata
    1971-04-03 – 1971-11-01
  33. 1970VEI 1Osservata
    1970-09-16 – 1970-09-17
  34. 1969VEI 2Osservata
    1969-06-22 – 1969-06-23
  35. 1968VEI 2Osservata
    1968-04-06 – 1968-06-10
  36. 1967VEI 1Osservata
    1967-07-22 – 1967-10-04
  37. 1966VEI 1Osservata
    1966-04-04 – 1966-09-27
  38. 1959VEI 1Osservata
    1959-05-21 – 1959-08-31
  39. 1956VEI 1Osservata
    1956-11-18 – 1956-11-18
  40. 1952VEI 1Osservata
    1952-07-16 – In corso
  41. 1951VEI 1Osservata
    1951-03-19 – In corso
  42. 1950VEI 1Osservata
    1950-06-26 – 1950-06-26
  43. 1948VEI 1Osservata
    1948-05-01 – In corso
  44. 1946VEI 2Osservata
    1946-04 – 1946-06
  45. 1946VEI 1Osservata
    1946-11-21 – 1947-05-31
  46. 1945VEI 3Osservata
    1945-03-08 – 1945-12
  47. 1944VEI 2Osservata
    1944-10 – In corso
  48. 1942VEI 2Osservata
    1942-08-10 – In corso
  49. 1940VEI 2Osservata
    1940-04 – In corso
  50. 1936VEI 2Osservata
    1936-05-09 – 1936-05-13
  51. 1934VEI 2Osservata
    1934-08-11 – In corso
  52. 1934VEI 2Osservata
    1934-12 – 1935-02
  53. 1925VEI 2Osservata
    1925-01-22 – In corso
  54. 1921VEI 2Osservata
    1921-10 – In corso
  55. 1918VEI 2Osservata
    1918-06-29 – In corso
  56. 1906VEI 2Osservata
    1906-03-15 – In corso
  57. 1903VEI 2Osservata
    1903 – In corso
  58. 1895VEI 2Osservata
    1895-03-10 – 1895-03-14
  59. 1889VEI 2Osservata
    1889-05-01 – In corso
  60. 1861VEI 2Osservata
    1861-05-16 – In corso
  61. 1210 (±150 anni)VEI 3Stima geologica
    1210 – In corso
  62. 5550 a.C. (±2500 anni)VEI ?Stima geologica
    BCE 5550 – In corso
    NE flank (Whakapapa)
  63. 7590 a.C. (±100 anni)VEI ?Stima geologica
    BCE 7590 – In corso
    North flank (Whakapapanui Gorge area)
  64. 7840 a.C.VEI 4Stima geologica
    BCE 7840 – In corso
    Upper north flank (Pinnacle Ridge)
  65. 9650 a.C.VEI ?Stima geologica
    BCE 9650 – In corso
  66. 9850 a.C.VEI ?Stima geologica
    BCE 9850 – In corso

Link esterni

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