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トンガ · 成層火山

Tofua Arc at 20.9°S

タイプ
成層火山
標高
296m (海底)
最終噴火
2017年
A plume and discolored water from a submarine eruption were observed in January 1999. This unnamed submarine volcano, 35 km NW of the Niu Aunofo lighthouse on Tongatapu Island, was constructed at the southern end of a submarine ridge segment of the Tofua volcanic arc extending NNE to Falcon Island. The first documented eruptions took place in 1911 and 1923. An ephemeral island was formed during this eruption in 1999; prior to this the summit was 13 m beneath the sea surface.
A plume and discolored water from a submarine eruption were observed in January 1999. This unnamed submarine volcano, 35 km NW of the Niu Aunofo lighthouse on Tongatapu Island, was constructed at the southern end of a submarine ridge segment of the Tofua volcanic arc extending NNE to Falcon Island. The first documented eruptions took place in 1911 and 1923. An ephemeral island was formed during this eruption in 1999; prior to this the summit was 13 m beneath the sea surface. · 写真: Photo by B. Hutchins, 1999 (published in Taylor, 1999).
タイプ
成層火山
国
トンガ
地域
トンガ・ケルマデック / Tofua Volcanic Arc
標高
296m (海底)
座標
-20.852, -175.550
最終噴火
2017年
テクトニクス環境
沈み込み帯 / 海洋地殻 (< 15 km)
火山地形
複成火山
主要岩石
データなし
地質学的概要

An unnamed submarine volcano is located along the Tofua Volcanic Arc 35 km NW of the Niu Aunofo lighthouse on Tongatapu Island. The first documented eruptions took place in 1911 and 1923; an ephemeral island was formed in 1999. A submarine eruption in January 2017 produced discolored water visible in satellite imagery.

噴火履歴

5件の記録用語集
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 · 矢印キーで棒を移動、Enterで表示
1911~1922 · 1件 · 最大 VEI 01922~1932 · 1件 · 最大 VEI 01964~1975 · 1件 · 最大 VEI 01996~2006 · 1件 · 最大 VEI 12006~2017 · 1件 · 最大 VEI 019111932196419852006

詳細タイムライン

  1. 2017年VEI 0観測記録
    2017-01-23 ~ 2017-01-31
    Submarine
  2. 1999年VEI 1観測記録
    1999-01-08 ~ 1999-01-14
  3. 1970年VEI 0観測記録
    1970-01-03 ~ 1970-01-03
  4. 1923年VEI 0観測記録
    1923-07-01 ~ 終了日不明
  5. 1911年VEI 0観測記録
    1911-08-16 ~ 終了日不明

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