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Pulau Ritter

Ritter Island

Stratovolkan · Papua New Guinea · 75 m

This arcuate, 1.9-km-long, 200-m-wide island is what remains of Ritter Island after its collapse in 1888. Prior to 1888 this was a steep-sided nearly circular island about 780 m high. Large-scale slope failure removed the summit of the conical volcano, leaving an arcuate 140-m-high west-facing scarp, seen here from the SW. Two minor post-collapse explosive eruptions occurred offshore during 1972 and 1974.
This arcuate, 1.9-km-long, 200-m-wide island is what remains of Ritter Island after its collapse in 1888. Prior to 1888 this was a steep-sided nearly circular island about 780 m high. Large-scale slope failure removed the summit of the conical volcano, leaving an arcuate 140-m-high west-facing scarp, seen here from the SW. Two minor post-collapse explosive eruptions occurred offshore during 1972 and 1974. · Foto: Photo by Wally Johnson, 1974 (Australia Bureau of Mineral Resources). · Wikimedia Commons
Tipe
Stratovolkan
Negara
Papua New Guinea
Wilayah
Southwestern Pacific Volcanic Regions / Bismarck Volcanic Arc
Ketinggian
75 m
Koordinat
-5.519, 148.115
Letusan terakhir
2007
Kondisi tektonik
Subduction zone / Continental crust (> 25 km)
Bentuk lahan
Composite
Batuan utama
Basalt / Picro-Basalt
Ringkasan geologi

Prior to 1888, Ritter Island was a steep-sided, nearly circular island about 780 m high between Umboi and Sakar Islands. Several historical explosive eruptions had been recorded prior to 1888, when large-scale slope failure destroyed the summit of the conical basaltic-andesitic volcano, leaving the arcuate 140-m-high island with a steep west-facing scarp. Devastating tsunamis were produced by the collapse and swept the coast of Papua New Guinea and offshore islands. Two minor post-collapse explosive eruptions, during 1972 and 1974, occurred offshore within the largely submarine 3.5 x 4.5 km breached depression formed by the collapse.

Ringkasan Wikipedia

Pulau Ritter adalah pulau vulkanik kecil berbentuk bulan sabit yang terletak 100 kilometer di timur laut Pulau Papua, di antara Pulau Umboi dan Pulau Sakar.

Wikipedia · CC BY-SA · Baca artikel lengkap →

Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
1700~1731 · 1 letusan · VEI maks. 31792~1823 · 1 letusan · VEI maks. 21823~1854 · 1 letusan · VEI maks. ?1854~1884 · 1 letusan · VEI maks. ?1884~1915 · 3 letusan · VEI maks. 21946~1976 · 2 letusan · VEI maks. 11976~2007 · 3 letusan · VEI maks. 217001761185419151976

Garis waktu rinci

  1. 2007VEI 1Teramati
    2007-05-19 – 2007-05-21
  2. 2006VEI 1Teramati
    2006-10-17 – 2006-10-17
  3. 2002VEI 2Perkiraan geologi
    2002-08-02 – 2002-08-02
  4. 1974VEI 1Teramati
    1974-10-17 – 1974-10-17
    600-900 m W of Ritter Island
  5. 1972VEI 1Teramati
    1972-10-09 – 1972-10-09
    West of Ritter Island
  6. 1888VEI 2Teramati
    1888-03-13 – 1888-03-13
  7. 1887VEI 2Perkiraan geologi
    1887-02-02 – 1887-02-05
    Volcano Uncertain: Probably Ritter or Langila
  8. 1885VEI ?Perkiraan geologi
    1885-01-13 – Berlangsung
  9. 1878VEI ?Perkiraan geologi
    1878-12-31 – Berlangsung
  10. 1848VEI ?Perkiraan geologi
    1848-04-13 – 1848-07-10
  11. 1793VEI 2Teramati
    1793-06-29 – Berlangsung
  12. 1700VEI 3Teramati
    1700-04-03 – 1700-04-06

Tautan eksternal

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