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Nishinoshima (Ogasawara)

Nishinoshima

Kaldera · Japan · 100 m

A submarine explosion from Nishinoshima breaches the surface on 9 October 1973. Steam trails behind ejected hot blocks at the margin of the plume. Submarine eruptions began on 12 April 1973 and the new island was first observed on 11 September. Lava flows began in September and three new islands were formed, which joined together during October-November 1973.
A submarine explosion from Nishinoshima breaches the surface on 9 October 1973. Steam trails behind ejected hot blocks at the margin of the plume. Submarine eruptions began on 12 April 1973 and the new island was first observed on 11 September. Lava flows began in September and three new islands were formed, which joined together during October-November 1973. · Foto: Photo courtesy of Japan Meteorological Agency, 1973. · Wikimedia Commons
Tipe
Kaldera
Negara
Japan
Wilayah
Northwestern Pacific Volcanic Regions / Ogasawara Volcanic Arc
Ketinggian
100 m
Koordinat
27.247, 140.874
Letusan terakhir
2023
Kondisi tektonik
Subduction zone / Crustal thickness unknown
Bentuk lahan
Caldera
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

The small island of Nishinoshima was enlarged when several new islands coalesced during an eruption in 1973-74. Multiple eruptions that began in 2013 completely covered the previous exposed surface and continued to enlarge the island. The island is the summit of a massive submarine volcano that has prominent peaks to the S, W, and NE. The summit of the southern cone rises to within 214 m of the ocean surface 9 km SSE.

Ringkasan Wikipedia

Nishi-no-shima adalah pulau gunung berapi yang terletak sekitar 940 km selatan-tenggara dari Tokyo, yang merupakan bagian dari busur Kepulauan Volcano.

Wikipedia · CC BY-SA · Baca artikel lengkap →

Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
1973~1978 · 2 letusan · VEI maks. 21978~1983 · 3 letusan · VEI maks. 01983~1988 · 3 letusan · VEI maks. 01998~2002 · 1 letusan · VEI maks. 02012~2017 · 2 letusan · VEI maks. 22017~2022 · 4 letusan · VEI maks. 219731983199820072017

Garis waktu rinci

  1. 2022VEI 2Teramati
    2022-10-01 – 2023-10-13
    Central cone of 2013 island
  2. 2021VEI 2Teramati
    2021-08-14 – 2021-08-15
    Central cone of 2013 island
  3. 2019VEI 1Teramati
    2019-12-05 – 2020-08-27
    Central cone of 2013 island
  4. 2018VEI 1Teramati
    2018-07-12 – 2018-07-21
    Central cone of 2013 island
  5. 2017VEI 2Teramati
    2017-04-18 – 2017-08-17
    Central cone of 2013 island
  6. 2013VEI 2Teramati
    2013-11-20 – 2015-11-17
    Vent SSE of existing Nishinoshima
  7. 2001VEI 0Perkiraan geologi
    2001-01-16 – Berlangsung
  8. 1986VEI 0Perkiraan geologi
    1986-07-02 – 1990-07-02
  9. 1985VEI 0Perkiraan geologi
    1985-12-02 – 1985-12-02
  10. 1983VEI 0Perkiraan geologi
    1983-07-02 – 1984-07-02
  11. 1982VEI 0Perkiraan geologi
    1982-04-16 – 1982-04-16
  12. 1980VEI 0Perkiraan geologi
    1980-07-07 – 1981-07-02
    South, east, and west sides
  13. 1978VEI 0Perkiraan geologi
    1978-11-16 – 1979-07-02
    6.5 km NW of Nishino-shima
  14. 1975VEI 0Perkiraan geologi
    1975-07-02 – 1977-07-02
  15. 1973VEI 2Teramati
    1973-04-12 – 1974-05-05
    Vent SE of existing Nishinoshima

Tautan eksternal

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