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Minami-Hiyoshi Seamount

Minami-Hiyoshi

Stratovolkan · Japan · 107 m (bawah laut)

Minami-Hiyoshi (center) is seen in this Japan Coast Guard bathymetric image with N to the right. Periodic water discoloration and water-spouting have been reported over this submarine volcano since 1975 along with audible detonations and an explosion. Minami-Hiyoshi lies near the SE end of a coalescing chain of seamounts. Naka-Hiyoshi (upper right) lies to the NW and Ko-Hiyoshi seamount (left) to the SSE.
Minami-Hiyoshi (center) is seen in this Japan Coast Guard bathymetric image with N to the right. Periodic water discoloration and water-spouting have been reported over this submarine volcano since 1975 along with audible detonations and an explosion. Minami-Hiyoshi lies near the SE end of a coalescing chain of seamounts. Naka-Hiyoshi (upper right) lies to the NW and Ko-Hiyoshi seamount (left) to the SSE. · Foto: Image courtesy of HOD Japan Coast Guard (http://www1.kaiho.mlit.go.jp/jhd-E). · Wikimedia Commons
Tipe
Stratovolkan
Negara
Japan
Wilayah
Northwestern Pacific Volcanic Regions / Mariana Volcanic Arc
Ketinggian
107 m (bawah laut)
Koordinat
23.500, 141.935
Letusan terakhir
1975
Kondisi tektonik
Subduction zone / Crustal thickness unknown
Bentuk lahan
Composite
Batuan utama
Trachyandesite / Basaltic Trachyandesite
Ringkasan geologi

Periodic water discoloration and water-spouting have been reported over the Minami-Hiyoshi submarine volcano since 1975, when detonation sounds and an explosion were also reported. It lies near the SE end of a coalescing chain of youthful seamounts, and is the only vent with recorded activity. The reported depth of the summit of the trachyandesitic volcano has varied between 274 and 30 m. The morphologically youthful seamounts Kita-Hiyoshi and Naka-Hiyoshi lie to the NW, and Ko-Hiyoshi to the SE.

Ringkasan Wikipedia

Ringkasan Inggris

The Minami-Hiyoshi Seamount is an active seamount in the Bonin Islands of Japan.

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Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
1975~1977 · 3 letusan · VEI maks. 01977~1979 · 1 letusan · VEI maks. 01992~1994 · 1 letusan · VEI maks. 01994~1996 · 1 letusan · VEI maks. 019751979198619901994

Garis waktu rinci

  1. 1996VEI 0Perkiraan geologi
    1996-01-11 – 1996-01-12
  2. 1992VEI 0Perkiraan geologi
    1992-02-12 – 1992-03-04
  3. 1978VEI 0Perkiraan geologi
    1978-01-26 – 1978-03-24
  4. 1976VEI 0Perkiraan geologi
    1976-02-16 – Berlangsung
  5. 1976VEI 0Perkiraan geologi
    1976-12-20 – 1977-03-28
    Hiyoshi-Okinoba (also 23.48 N 141.67 E)
  6. 1975VEI 0Teramati
    1975-08-25 – Berlangsung
    23.50 N 141.92 E

Tautan eksternal

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