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Bam

Stratovolkan · 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
Tipe
Stratovolkan
Negara
Papua New Guinea
Wilayah
Southwestern Pacific Volcanic Regions / Bismarck Volcanic Arc
Ketinggian
685 m
Koordinat
-3.613, 144.818
Letusan terakhir
1960
Kondisi tektonik
Subduction zone / Continental crust (> 25 km)
Bentuk lahan
Composite
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

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.

Ringkasan Wikipedia

Ringkasan Inggris

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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Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
1872~1881 · 3 letusan · VEI maks. 31881~1890 · 3 letusan · VEI maks. ?1890~1898 · 1 letusan · VEI maks. ?1898~1907 · 1 letusan · VEI maks. 21907~1916 · 3 letusan · VEI maks. 21916~1925 · 2 letusan · VEI maks. 21934~1942 · 1 letusan · VEI maks. ?1942~1951 · 2 letusan · VEI maks. 21951~1960 · 6 letusan · VEI maks. 218721890191619341951

Garis waktu rinci

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

Tautan eksternal

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