Saltar al contenido principal
Volver al mapa
CompararVer en el mapa

Estados Unidos · Estratovolcán

Isla Bogoslof

Bogoslof

Tipo
Estratovolcán
Altitud
150 m
Última erupción
2017
Isla Bogoslof
Foto: T. Keith, U.S. Geological Survey · Public domain · Wikimedia Commons
Tipo
Estratovolcán
País
Estados Unidos
Región
América del Norte / Aleutian Ridge Volcanic Arc
Altitud
150 m
Coordenadas
53.930, -168.030
Última erupción
2017
Contexto tectónico
Zona de subducción / Corteza intermedia (15-25 km)
Forma volcánica
Compuesto
Roca principal
Traquiandesita / Traquiandesita basáltica
Resumen geológico

Bogoslof is the emergent summit of a submarine volcano that lies 40 km N of the main Aleutian arc. It rises 1,500 m above the Bering Sea floor. Repeated construction and destruction of lava domes at different locations during historical time has greatly modified the appearance of this "Jack-in-the-Box" volcano and has introduced a confusing nomenclature applied during frequent visits by exploring expeditions. The present triangular-shaped, 0.75 x 2 km island consists of remnants of lava domes emplaced from 1796 to 1992. Castle Rock (Old Bogoslof) is a steep-sided pinnacle that is a remnant of a spine from the 1796 eruption. The small Fire Island (New Bogoslof), about 600 m NW of Bogoslof Island, is a remnant of a lava dome formed in 1883.

Resumen de Wikipedia

Resumen en inglés

Bogoslof Island or Agasagook Island is the summit of a submarine stratovolcano at the south edge of the Bering Sea, 35 miles (56 km) northwest of Unalaska Island of the Aleutian Islands chain. It has a land area of 319.3 acres (1.292 km2) and is uninhabited. It is 1,040 meters (3,410 ft) long and 1,512 m (4,961 ft) wide, with a peak elevation of 490 feet (150 m). The stratovolcano rises about 6,000 ft (1,800 m) from the seabed, but the summit is the only part that projects above sea level. The island is believed to be relatively new, with the volcano being entirely below sea level before 1796, and most of the presently 300-acre island being formed by eruptions since 1900.

Wikipedia · CC BY-SA · Leer artículo completo →

Historial de erupciones

12 registradasGlosario
Resumen (VEI en el tiempo)
Haga clic en una barra para ver erupciones individuales · Usa las flechas para moverte entre barras y Enter para abrir
1796~1818 · 2 erupciones · VEI máx. 31862~1884 · 1 erupciones · VEI máx. 31906~1928 · 5 erupciones · VEI máx. 31928~1950 · 1 erupciones · VEI máx. 11950~1972 · 1 erupciones · VEI máx. 01972~1994 · 1 erupciones · VEI máx. 31994~2016 · 1 erupciones · VEI máx. 317961840190619501994

Línea de tiempo detallada

  1. 2016VEI 3Observado
    2016-12-20 – 2017-08-30
    Central vent, just below sea level
  2. 1992VEI 3Observado
    1992-07-06 – 1992-07-24
    North tip of island (NE of 1927 dome)
  3. 1951VEI 0Método no indicado
    1951-09-21 – fin desconocido
  4. 1931VEI 1Observado
    1931-10-31 – fin desconocido
    1926-1927 dome
  5. 1926VEI 2Observado
    1926-07-16 – 1928-07-02
    Between New and Old Bogoslof
  6. 1913VEI ?Método no indicado
    1913-07-16 – fin desconocido
    Tahoma Peak
  7. 1909VEI 2Observado
    1909-09-16 – 1910-09-19
    Tahoma Peak
  8. 1908VEI ?Método no indicado
    1908-01-15 – fin desconocido
    Metcalf Peak
  9. 1906VEI 3Observado
    1906-03-01 – 1907-09-01
    Metcalf Peak, McCullough Peak
  10. 1883VEI 3Observado
    1883-09-27 – 1895-07-02
    New Bogoslof (Grewingk)
  11. 1806VEI 2Observado
    1806-07-02 – 1823-07-02
    Old Bogoslof (Castle Rock)
  12. 1796VEI 3Observado
    1796-05 – 1804-07-02
    Old Bogoslof (Castle Rock)

Volcanes cercanos

Enlaces externos

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