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Manam

Stratovulcano · Papua New Guinea · 1807 m

The 10-km-wide island of Manam is one of Papua New Guinea's most active volcanoes. Four large radial valleys extend from the unvegetated summit to its lower flanks and two summit craters are present. Most eruptions during the past century have originated from the southern crater, concentrating eruptive products into the SE avalanche valley, seen here from off the east coast of the island. Frequent eruptions have been recorded since 1616.
The 10-km-wide island of Manam is one of Papua New Guinea's most active volcanoes. Four large radial valleys extend from the unvegetated summit to its lower flanks and two summit craters are present. Most eruptions during the past century have originated from the southern crater, concentrating eruptive products into the SE avalanche valley, seen here from off the east coast of the island. Frequent eruptions have been recorded since 1616. · Foto: Photo by Wally Johnson (Australia Bureau of Mineral Resources). · Wikimedia Commons
Tipo
Stratovulcano
Paese
Papua New Guinea
Regione
Southwestern Pacific Volcanic Regions / Bismarck Volcanic Arc
Altitudine
1807 m
Coordinate
-4.080, 145.037
Ultima eruzione
2026
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Basalt / Picro-Basalt
Sintesi geologica

The 10-km-wide island of Manam, lying 13 km off the northern coast of mainland Papua New Guinea, is one of the country's most active volcanoes. Four large radial valleys extend from the unvegetated summit of the conical basaltic-andesitic stratovolcano to its lower flanks. These valleys channel lava flows and pyroclastic avalanches that have sometimes reached the coast. Five small satellitic centers are located near the island's shoreline on the northern, southern, and western sides. Two summit craters are present; both are active, although most observed eruptions have originated from the southern crater, concentrating eruptive products during much of the past century into the SE valley. Frequent eruptions, typically of mild-to-moderate scale, have been recorded since 1616. Occasional larger eruptions have produced pyroclastic flows and lava flows that reached flat-lying coastal areas and entered the sea, sometimes impacting populated areas.

Sintesi da Wikipedia

Riassunto breve — apri l'articolo completo per maggiori dettagli.

Manam è un'isola vulcanica di Papua Nuova Guinea.

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Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
1616~1656 · 2 eruzioni · VEI max. 21696~1737 · 1 eruzioni · VEI max. ?1817~1857 · 1 eruzioni · VEI max. 21857~1897 · 4 eruzioni · VEI max. 21897~1938 · 16 eruzioni · VEI max. 41938~1978 · 12 eruzioni · VEI max. 31978~2018 · 10 eruzioni · VEI max. 416161696181718971978

Cronologia dettagliata

  1. 2018VEI 4Osservata
    2018-06-10 – 2026-03-16
    Southern and Main Craters
  2. 2014VEI 4Osservata
    2014-06-29 – 2017-09-02
    Southern and Main craters
  3. 2010VEI 3Osservata
    2010-08-10 – 2013-12-15
    South Crater, Main Crater
  4. 2004VEI 4Osservata
    2004-10-24 – 2009-12-12
    South Crater, Main Crater
  5. 2003VEI 1Osservata
    2003-05-17 – 2003-05-23
    Main Crater
  6. 2003VEI 1Osservata
    2003-10-26 – 2004-03-28
    Main Crater
  7. 2002VEI 3Osservata
    2002-01-13 – 2002-05-21
    South Crater
  8. 2002VEI 2Osservata
    2002-10-31 – In corso
  9. 2001VEI 2Osservata
    2001-06-14 – 2001-06-25
  10. 2000VEI 2Osservata
    2000-06-03 – 2000-06-04
    South Crater
  11. 1974VEI 3Osservata
    1974-03-04 – 1999-11-09
    South Crater, Main Crater
  12. 1965VEI 2Osservata
    1965-07-02 – 1966-01-25
    South Crater
  13. 1963VEI 2Osservata
    1963-02-15 – 1963-05-08
    South Crater
  14. 1963VEI 2Osservata
    1963-11-26 – 1964-04-16
    South Crater
  15. 1962VEI 2Osservata
    1962-04-16 – In corso
    South Crater
  16. 1961VEI 2Osservata
    1961-07-16 – 1961-09-16
    South Crater
  17. 1959VEI 2Osservata
    1959-06-16 – 1959-07-16
    South Crater
  18. 1959VEI 2Osservata
    1959-12-16 – 1960-12-16
    Main Crater, South Crater
  19. 1956VEI 3Osservata
    1956-12-08 – 1958-08-16
    South Crater, Main Crater
  20. 1954VEI 2Osservata
    1954-05-16 – 1954-06-16
  21. 1953VEI 2Osservata
    1953-04-16 – 1953-08-16
  22. 1946VEI 3Osservata
    1946-12-01 – 1947-09
    South Crater
  23. 1936VEI 3Osservata
    1936-09 – 1939
    Main Crater, South Crater
  24. 1932VEI 2Osservata
    1932 – 1934
  25. 1926VEI 2Osservata
    1926-03 – 1928-03-01
  26. 1925VEI 2Osservata
    1925 – In corso
  27. 1924VEI 2Stima geologica
    1924 – In corso
  28. 1923VEI 2Stima geologica
    1923 – In corso
  29. 1922VEI 3Osservata
    1922 – In corso
  30. 1920VEI 2Osservata
    1920-12-05 – 1921-03
  31. 1919VEI 4Osservata
    1919-08-11 – In corso
    South Crater, Main Crater
  32. 1917VEI 2Osservata
    1917 – In corso
  33. 1909VEI 2Osservata
    1909 – 1914
  34. 1907VEI ?Stima geologica
    1907 – In corso
  35. 1904VEI ?Osservata
    1904-04-30 – In corso
  36. 1904VEI 3Osservata
    1904-10-26 – 1904-10-27
  37. 1901VEI ?Stima geologica
    1901 – 1902
  38. 1899 (±1 anni)VEI 2Osservata
    1899 – In corso
    Main Crater, South Crater
  39. 1887VEI 2Osservata
    1887-06 – 1895
  40. 1885VEI ?Osservata
    1885-05 – In corso
  41. 1884VEI ?Stima geologica
    1884 – In corso
  42. 1877VEI 2Osservata
    1877-10-29 – 1877-11-13
    South Crater
  43. 1830VEI 2Osservata
    1830 – In corso
  44. 1700VEI ?Osservata
    1700-04-02 – In corso
    South Crater
  45. 1643VEI 2Osservata
    1643-04-21 – In corso
  46. 1616VEI 2Osservata
    1616-07-06 – In corso

Link esterni

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