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Bagana

Cono de lava · Papua New Guinea · 1855 m

Plumes rise from a slow-moving andesite lava flow descending the NW flank of Bagana on 26 April 1988. The flow at that time had been moving for about 3 or 4 years and is typical of the lava extrusion that began in 1972. This volcano was largely constructed by an accumulation of viscous andesite lava flows like this one.
Plumes rise from a slow-moving andesite lava flow descending the NW flank of Bagana on 26 April 1988. The flow at that time had been moving for about 3 or 4 years and is typical of the lava extrusion that began in 1972. This volcano was largely constructed by an accumulation of viscous andesite lava flows like this one. · Foto: Photo by Wally Johnson, 1988 (Australia Bureau of Mineral Resources). · Wikimedia Commons
Tipo
Cono de lava
País
Papua New Guinea
Región
Pacífico Suroccidental / Bougainville Volcanic Arc
Altitud
1855 m
Coordenadas
-6.137, 155.196
Última erupción
2026
Contexto tectónico
Subduction zone / Crustal thickness unknown
Forma volcánica
Composite
Roca principal
Andesite / Basaltic Andesite
Resumen geológico

Bagana volcano, in a remote portion of central Bougainville Island, is frequently active. This massive symmetrical cone was largely constructed by an accumulation of viscous andesitic lava flows. The entire edifice could have been constructed in about 300 years at its present rate of lava production. Eruptive activity is characterized by non-explosive effusion of viscous lava that maintains a small lava dome in the summit crater, although occasional explosive activity produces pyroclastic flows. Lava flows with tongue-shaped lobes up to 50 m thick and prominent levees descend the flanks on all sides.

Resumen de Wikipedia

Resumen en inglés

Bagana is an active volcanic cone located in the centre of the island of Bougainville, Papua New Guinea, the largest island of the Solomon group. It is the most active volcano in the country, occupying a remote portion of central Bougainville Island. It is one of Melanesia's youngest and most active volcanoes.

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Historial de erupciones

Resumen (VEI en el tiempo)
Haga clic en una barra para ver erupciones individuales
1842~1858 · 1 erupciones · VEI máx. 11858~1874 · 1 erupciones · VEI máx. 21874~1889 · 1 erupciones · VEI máx. 31889~1905 · 3 erupciones · VEI máx. 21905~1921 · 2 erupciones · VEI máx. 21937~1953 · 7 erupciones · VEI máx. 41953~1968 · 8 erupciones · VEI máx. 31968~1984 · 2 erupciones · VEI máx. 21984~2000 · 1 erupciones · VEI máx. 218421874192119531984

Línea de tiempo detallada

  1. 2000VEI 2Observado
    2000-02-28 – 2026-03-17
  2. 1972VEI 2Observado
    1972-07-02 – 1995-07-02
  3. 1970VEI 2Observado
    1970-05-21 – 1971-08-16
  4. 1968VEI 2Observado
    1968-08-16 – 1968-08-16
  5. 1966VEI 3Observado
    1966-03-20 – 1967-11-30
  6. 1964VEI 2Observado
    1964-04-24 – 1965-07-02
  7. 1962VEI 2Observado
    1962-02-15 – 1963-07-02
  8. 1961VEI 2Observado
    1961-07-26 – En curso
  9. 1959VEI 2Observado
    1959-07-02 – 1960-05-16
  10. 1956VEI 2Observado
    1956-07-02 – En curso
  11. 1953VEI 3Observado
    1953-06-16 – 1953-09-16
  12. 1952VEI 4Observado
    1952-02-29 – 1952-10-16
  13. 1948VEI 3Observado
    1948-12-01 – 1951-12-01
  14. 1945VEI 2Observado
    1945-07-02 – 1947-07-02
  15. 1943VEI 1Observado
    1943-04-07 – En curso
  16. 1939VEI 2Observado
    1939-01-30 – En curso
  17. 1938VEI 3Observado
    1938-05-15 – En curso
  18. 1937VEI 3Observado
    1937-09-07 – En curso
  19. 1909VEI ?Estimación geológica
    1909-07-16 – En curso
  20. 1908VEI 2Observado
    1908-07-15 – En curso
  21. 1899VEI ?Observado
    1899-07-02 – En curso
  22. 1897VEI 2Observado
    1897-05-16 – En curso
  23. 1894VEI 2Observado
    1894-07-02 – 1895-07-02
  24. 1883VEI 3Observado
    1883-12-31 – En curso
  25. 1865 (±3 años)VEI 2Observado
    1865-07-02 – 1883-07-02
  26. 1842VEI 1Observado
    1842-03-15 – En curso

Enlaces externos

⚠ Solo como referencia. No apto para respuesta ante emergencias.