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Myōjin-shō

Myojinsho

Caldera · Japan · 11 m

Steam emission from the blocky summit of a lava dome formed during a submarine eruption at the Beyonesu Rocks vent of the Myojinsho caldera in 1952. This 22 September photo was taken six days after the dome began to breach the sea surface. Later that day the eruption became highly explosive and the dome was destroyed. Three cycles of dome growth and destruction occurred until October 1953.
Steam emission from the blocky summit of a lava dome formed during a submarine eruption at the Beyonesu Rocks vent of the Myojinsho caldera in 1952. This 22 September photo was taken six days after the dome began to breach the sea surface. Later that day the eruption became highly explosive and the dome was destroyed. Three cycles of dome growth and destruction occurred until October 1953. · Foto: Photo courtesy of Helen Foster, 1952 (U.S. Geological Survey). · Wikimedia Commons
Tipo
Caldera
País
Japan
Región
Northwestern Pacific Volcanic Regions / Izu Volcanic Arc
Altitud
11 m
Coordenadas
31.888, 139.918
Última erupción
1970
Contexto tectónico
Subduction zone / Oceanic crust (< 15 km)
Forma volcánica
Caldera
Roca principal
Dacite
Resumen geológico

Beyonesu Rocks are part of the barely exposed rim of the largely submarine Myojinsho caldera. Formation of the 8-9 km wide caldera was followed by construction of a large (2.6 km3) lava dome and/or lava flow complex on the caldera floor, originally located at a depth of 1,000-1,100 m. Most eruptions recorded since the late-19th century have occurred from the dacitic post-caldera Myojinsho lava dome on the NE caldera rim. Deposits from submarine pyroclastic flows associated with growth of the dome cover it and extend both into the NE part of the caldera and down its outer slopes. An explosive submarine eruption from Myojinsho in 1952 destroyed a Japanese research vessel, killing all 31 on board. Submarine eruptions have also been observed from other points on the caldera rim and outside of the caldera. The Beyonesu Rocks were named after the French warship the Bayonnaise, which was surveying volcanic islands south of Tokyo Bay in 1850.

Resumen de Wikipedia

Myōjin-Shō es un volcán submarino que se encuentra a 450 km al sur de Tokio sobre la Cresta Izu-Ogasawara en las islas de Izu. A partir de 1869 existen registros de actividad volcánica. Desde entonces ha padecido erupciones volcánicas, la más fuerte produjo la aparición y desaparición de una pequeña isla.

Wikipedia · CC BY-SA · Leer artículo completo →

Historial de erupciones

Resumen (VEI en el tiempo)
Haga clic en una barra para ver erupciones individuales
1869~1884 · 2 erupciones · VEI máx. 01884~1900 · 1 erupciones · VEI máx. 21900~1915 · 2 erupciones · VEI máx. 11931~1946 · 1 erupciones · VEI máx. 01946~1961 · 8 erupciones · VEI máx. 21961~1977 · 2 erupciones · VEI máx. 21977~1992 · 7 erupciones · VEI máx. 02008~2023 · 2 erupciones · VEI máx. ?18691900194619772008

Línea de tiempo detallada

  1. 2023VEI ?Observado
    2023-01-26 – 2023-01-26
  2. 2018VEI ?Observado
    2018-03-24 – 2018-03-24
  3. 1988VEI 0Estimación geológica
    1988-03-18 – 1988-03-19
    Myojinsho
  4. 1987VEI 0Estimación geológica
    1987-10-21 – 1987-12-09
    Myojinsho
  5. 1986VEI 0Estimación geológica
    1986-10-24 – 1986-10-24
    Myojinsho
  6. 1983VEI 0Estimación geológica
    1983-05-12 – En curso
    Myojinsho
  7. 1982VEI 0Estimación geológica
    1982-08-10 – En curso
    Myojinsho
  8. 1980VEI 0Estimación geológica
    1980-11-15 – 1980-12-23
    Myojinsho
  9. 1979VEI 0Estimación geológica
    1979-07-13 – En curso
    Myojinsho
  10. 1971VEI 0Estimación geológica
    1971-03-18 – En curso
  11. 1970VEI 2Observado
    1970-01-29 – 1970-06-16
    Myojinsho
  12. 1960VEI 2Observado
    1960-07-21 – En curso
    Myojinsho
  13. 1959VEI 0Observado
    1959-07-02 – En curso
  14. 1958VEI 0Observado
    1958-07-02 – En curso
  15. 1957VEI 0Observado
    1957-05-02 – En curso
  16. 1955VEI 0Observado
    1955-06-25 – En curso
    4 km north of Bayonnaise Rocks
  17. 1954VEI 0Observado
    1954-11-04 – 1954-11-05
    Myojinsho
  18. 1952VEI 2Observado
    1952-09-16 – 1953-10-16
    Myojinsho
  19. 1946VEI 2Observado
    1946-02-04 – En curso
    Island at 31.95 N 140.02 E
  20. 1934VEI 0Observado
    1934-05 – En curso
    9 km E of Bayonnaise Rocks
  21. 1915VEI 0Observado
    1915-02 – 1915-07
    11 km east, 19 km NE, 4 km SW
  22. 1906VEI 1Observado
    1906-04-07 – 1906-04-14
    9-15 km SE of Bayonnaise Rocks
  23. 1896VEI 2Observado
    1896 – En curso
    14 km north of Bayonnaise Rocks
  24. 1871VEI 0Estimación geológica
    1871 – En curso
    Volcano Uncertain
  25. 1869VEI 0Estimación geológica
    1869-05-06 – En curso
    Volcano Uncertain

Enlaces externos

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