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Bam

Estratovolcán · Papua New Guinea · 685 m

The small 2.4 x 1.6 km island of Bam, seen here from the S, is the summit of a mostly submerged volcano that is one of the more active in Papua New Guinea. A 300-m-wide and 180-m-deep summit crater is source of recent eruptions, which have resulted in the sparsely-vegetated area. A younger cone (center) formed inside a SE-facing landslide scarp. Eruptions recorded since 1872 involved small-to-moderate explosive activity from the summit crater.
The small 2.4 x 1.6 km island of Bam, seen here from the S, is the summit of a mostly submerged volcano that is one of the more active in Papua New Guinea. A 300-m-wide and 180-m-deep summit crater is source of recent eruptions, which have resulted in the sparsely-vegetated area. A younger cone (center) formed inside a SE-facing landslide scarp. Eruptions recorded since 1872 involved small-to-moderate explosive activity from the summit crater. · Foto: Photo by Wally Johnson, 1970 (Australia Bureau of Mineral Resources). · Wikimedia Commons
Tipo
Estratovolcán
País
Papua New Guinea
Región
Southwestern Pacific Volcanic Regions / Bismarck Volcanic Arc
Altitud
685 m
Coordenadas
-3.613, 144.818
Última erupción
1960
Contexto tectónico
Subduction zone / Continental crust (> 25 km)
Forma volcánica
Composite
Roca principal
Andesite / Basaltic Andesite
Resumen geológico

The 1.6 x 2.4 km island of Bam is the summit of a mostly submerged volcano in the Schouten Islands off the coast of New Guinea, ~40 km NNE of the mouth of the Sepik River. A steep-walled summit crater that is 300 m wide and 180 m deep is the source of recent eruptions, which have kept the upper half of the cone sparsely vegetated. A NE-trending landslide scarp extends across the upper part of the andesitic volcano from the SW coast, and a large submarine debris-avalanche deposits lies to the S and SW. The younger summit cone partially buries the eastern side of the collapse scarp. A recent lava platform on the N flank supports the small island's only villages. Eruptions recorded since 1872 have all consisted of small-to-moderate explosive activity from the summit crater.

Resumen de Wikipedia

Resumen en inglés

Bam, also known as Biem, is a small volcanic island off the coast of Papua New Guinea (PNG), 40 km (25 mi) north northeast of the Sepik river mouth. It represents the southernmost island of the Schouten Islands. The northern coast of the island is inhabited by a village and coconut groves. Much of the island is forested, except along its south flank. As of 2018, the island has a population of approximately 3,000 people.

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Historial de erupciones

Resumen (VEI en el tiempo)
Haga clic en una barra para ver erupciones individuales
1872~1881 · 3 erupciones · VEI máx. 31881~1890 · 3 erupciones · VEI máx. ?1890~1898 · 1 erupciones · VEI máx. ?1898~1907 · 1 erupciones · VEI máx. 21907~1916 · 3 erupciones · VEI máx. 21916~1925 · 2 erupciones · VEI máx. 21934~1942 · 1 erupciones · VEI máx. ?1942~1951 · 2 erupciones · VEI máx. 21951~1960 · 6 erupciones · VEI máx. 218721890191619341951

Línea de tiempo detallada

  1. 1960VEI 2Observado
    1960-04-28 – 1960-07-06
  2. 1959VEI 2Observado
    1959-04-02 – 1959-10-31
  3. 1958VEI 2Observado
    1958-03-11 – 1958-04-19
  4. 1958VEI 2Observado
    1958-09-05 – 1958-09-10
  5. 1957VEI 1Observado
    1957-10-26 – 1957-10-26
  6. 1954VEI 2Observado
    1954-08-03 – 1957-01-02
  7. 1947VEI 2Observado
    1947-03-13 – En curso
  8. 1944VEI 2Observado
    1944 – En curso
  9. 1936VEI ?Estimación geológica
    1936-07 – 1939-04
  10. 1924VEI 2Observado
    1924 – En curso
  11. 1918VEI ?Observado
    1918-09-18 – En curso
  12. 1913VEI ?Observado
    1913 – En curso
  13. 1909VEI 2Observado
    1909-04-19 – 1909-09-13
  14. 1908VEI 2Observado
    1908-07-12 – En curso
  15. 1907VEI 2Observado
    1907-11 – En curso
  16. 1897VEI ?Estimación geológica
    1897 – 1898
  17. 1888VEI ?Estimación geológica
    1888 – En curso
  18. 1885VEI ?Estimación geológica
    1885-05-20 – En curso
  19. 1883VEI ?Estimación geológica
    1883-03 – En curso
  20. 1877VEI 3Observado
    1877-11-13 – En curso
  21. 1874VEI 2Observado
    1874-05-20 – En curso
  22. 1872 (±4 años)VEI 3Observado
    1872 – En curso

Enlaces externos

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