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Otake

Nakanoshima

Stratovolkan · Japan · 979 m

Nakanoshima island is seen here from a beach on Kuchinoshima to the NNE. The active cone of Ontake to the right has a summit crater that fills with water during the rainy season. The 9 x 5 km island is surrounded by coral reefs, and a flat plateau separates it from an older dissected volcano to the south. Minor activity has been reported in historical time.
Nakanoshima island is seen here from a beach on Kuchinoshima to the NNE. The active cone of Ontake to the right has a summit crater that fills with water during the rainy season. The 9 x 5 km island is surrounded by coral reefs, and a flat plateau separates it from an older dissected volcano to the south. Minor activity has been reported in historical time. · Foto: Copyrighted photo by Shun Nakano, 2005 (Japanese Quaternary Volcanoes database, RIODB, http://riodb02.ibase.aist.go.jp/strata/VOL_JP/EN/index.htm and Geol Surv Japan, AIST, http://www.gsj.jp/). · Wikimedia Commons
Tipe
Stratovolkan
Negara
Japan
Wilayah
Western Pacific Volcanic Regions / Ryukyu Volcanic Arc
Ketinggian
979 m
Koordinat
29.859, 129.857
Letusan terakhir
1914
Kondisi tektonik
Subduction zone / Oceanic crust (< 15 km)
Bentuk lahan
Composite
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

The 9 x 5 km island of Nakanoshima is surrounded by coral reefs. A flat plateau separates the older dissected Sakiwaridake volcano on the south from the active andesitic cone of Ontake, which forms the northern half of the island. Ontake contains a summit crater that is filled with water during the rainy season. Sulfur deposits were mined at a SE-flank solfatara until 1944. Only very minor activity has been reported in historical time. A small mud eruption took place in 1914 at the summit crater, and "smoking" increased in 1949.

Ringkasan Wikipedia

Ringkasan Inggris

Otake is a stratovolcano in the Tokara Islands of Japan. It is the largest mountain on Nakanoshima, which is part of the village of Toshima in Kagoshima District of Kagoshima Prefecture. Being the largest mountain on a small island, it is also referred to as Nakanoshima. It is also called "Tokara Fuji" from its shape.

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Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
1914~1918 · 1 letusan · VEI maks. 11946~1949 · 1 letusan · VEI maks. 119141921193219391946

Garis waktu rinci

  1. 1949VEI 1Perkiraan geologi
    1949-10 – Berlangsung
    On-take
  2. 1914VEI 1Teramati
    1914-01 – Berlangsung
    On-take

Tautan eksternal

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