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Myōjin-shō

Myojinsho

Kaldera · 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
Tipe
Kaldera
Negara
Japan
Wilayah
Northwestern Pacific Volcanic Regions / Izu Volcanic Arc
Ketinggian
11 m
Koordinat
31.888, 139.918
Letusan terakhir
1970
Kondisi tektonik
Subduction zone / Oceanic crust (< 15 km)
Bentuk lahan
Caldera
Batuan utama
Dacite
Ringkasan geologi

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.

Ringkasan Wikipedia

Myōjin-Shō adalah sebuah gunung berapi bawah laut yang terletak sekitar 450 kilometer di selatan Tokyo di Izu-Ogasawara Ridge di Kepulauan Izu. Aktivitas vulkanis telah tercatat di sana sejak 1869. Sejak itu gunung ini mengalami letusan yang lebih banyak, yang terkuat mengakibatkan kemunculan dan tenggelamnya satu pulau kecil.

Wikipedia · CC BY-SA · Baca artikel lengkap →

Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
1869~1884 · 2 letusan · VEI maks. 01884~1900 · 1 letusan · VEI maks. 21900~1915 · 2 letusan · VEI maks. 11931~1946 · 1 letusan · VEI maks. 01946~1961 · 8 letusan · VEI maks. 21961~1977 · 2 letusan · VEI maks. 21977~1992 · 7 letusan · VEI maks. 02008~2023 · 2 letusan · VEI maks. ?18691900194619772008

Garis waktu rinci

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

Tautan eksternal

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