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Isla Ritter

Ritter Island

Estratovolcán · 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
Tipo
Estratovolcán
País
Papua New Guinea
Región
Southwestern Pacific Volcanic Regions / Bismarck Volcanic Arc
Altitud
75 m
Coordenadas
-5.519, 148.115
Última erupción
2007
Contexto tectónico
Subduction zone / Continental crust (> 25 km)
Forma volcánica
Composite
Roca principal
Basalt / Picro-Basalt
Resumen geológico

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.

Resumen de Wikipedia

Ritter Island es una pequeña isla volcánica en forma de media luna de 100 km al noreste de Nueva Guinea, situado entre las islas Umboi y Sakar

Wikipedia · CC BY-SA · Leer artículo completo →

Historial de erupciones

Resumen (VEI en el tiempo)
Haga clic en una barra para ver erupciones individuales
1700~1731 · 1 erupciones · VEI máx. 31792~1823 · 1 erupciones · VEI máx. 21823~1854 · 1 erupciones · VEI máx. ?1854~1884 · 1 erupciones · VEI máx. ?1884~1915 · 3 erupciones · VEI máx. 21946~1976 · 2 erupciones · VEI máx. 11976~2007 · 3 erupciones · VEI máx. 217001761185419151976

Línea de tiempo detallada

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

Enlaces externos

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