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フォヌアフォオウ

Fonuafo'ou

成層火山 · Tonga · 17m (海底)

The active crater of Fonuafo'ou (formerly known as Falcon Island) through the SE breach and a plume that is dispersed to the NW by dominant SE Trade Winds. The ephemeral island in the central part of the Tonga Islands had been named after the British vessel H.M.S. Falcon, which reported the shoal in 1865. This volcano has been the site of eruptions on at least two occasions since the 19th century. By 1949 the island had eroded beneath sea level, but the summit of the volcano remains at shallow depths.
The active crater of Fonuafo'ou (formerly known as Falcon Island) through the SE breach and a plume that is dispersed to the NW by dominant SE Trade Winds. The ephemeral island in the central part of the Tonga Islands had been named after the British vessel H.M.S. Falcon, which reported the shoal in 1865. This volcano has been the site of eruptions on at least two occasions since the 19th century. By 1949 the island had eroded beneath sea level, but the summit of the volcano remains at shallow depths. · 写真: Photo by A. Thompson (published in Taylor and Ewart, 1997). · Wikimedia Commons
タイプ
成層火山
国
Tonga
地域
Tonga-Kermadec Volcanic Regions / Tofua Volcanic Arc
標高
17m (海底)
座標
-20.320, -175.420
最終噴火
1936年
テクトニクス環境
Subduction zone / Oceanic crust (< 15 km)
火山地形
Composite
主要岩石
Andesite / Basaltic Andesite
地質学的概要

The ephemeral Fonuafo'ou island in the central part of the Tonga Islands is also known as Falcon Island, named after the British vessel H.M.S. Falcon, which reported a shoal in 1865. Islands up to 6 km long were formed in 1885 and 1927 eruptions; in 1933 the island had a height of more than 145 m. Passing ships often reported "smoke" issuing from the site. The latest explosive activity was reported in 1936. By 1949 the island had eroded beneath sea level, but the summit remains at shallow depths.

Wikipedia の要約

英語版の要約

Fonuafo‘ou, formerly known as Falcon Island, is a submarine volcano in the western part of the Ha'apai group in Tonga. The volcano has created an island several times throughout history.

Wikipedia · CC BY-SA · 記事全文を読む →

噴火履歴

概要 (VEI時系列)
バーをクリックすると個別の噴火が表示されます
1781~1797 · 1件 · 最大 VEI 01859~1874 · 1件 · 最大 VEI 01874~1890 · 2件 · 最大 VEI 31890~1905 · 1件 · 最大 VEI 01921~1936 · 4件 · 最大 VEI 217811812185918901921

詳細タイムライン

  1. 1936年VEI 2観測記録
    1936-06 ~ 進行中
  2. 1933年VEI 2観測記録
    1933-04 ~ 進行中
  3. 1927年VEI 2観測記録
    1927-10-04 ~ 1928-09
  4. 1921年VEI 0地質学的推定
    1921-11 ~ 進行中
  5. 1894年VEI 0地質学的推定
    1894-12 ~ 進行中
  6. 1885年VEI 3観測記録
    1885-10-12 ~ 1886
  7. 1877年VEI 2観測記録
    1877 ~ 進行中
  8. 1865年VEI 0地質学的推定
    1865 ~ 進行中
  9. 1781年VEI 0地質学的推定
    1781 ~ 進行中

外部リンク

⚠ 参考情報です。緊急対応には使用しないでください。