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ラテ島

Late

成層火山 · Tonga · 540m

An aerial photo of Late taken in July 1990 shows the main summit crater breached to the SE and a NE graben occupied by large pit craters, the largest of which contains a saltwater lake. Except for remnants of a small lava plug in the summit crater, no fresh lava flows are present. The small, 6-km-wide island rises 1,500 m from the sea floor, with its conical summit reaching more than 500 m above sea level.
An aerial photo of Late taken in July 1990 shows the main summit crater breached to the SE and a NE graben occupied by large pit craters, the largest of which contains a saltwater lake. Except for remnants of a small lava plug in the summit crater, no fresh lava flows are present. The small, 6-km-wide island rises 1,500 m from the sea floor, with its conical summit reaching more than 500 m above sea level. · 写真: Aerial photo by Tonga Ministry of Lands, Survey, and Natural Resources, 1990 (published in Taylor and Ewart, 1997). · Wikimedia Commons
タイプ
成層火山
Tonga
地域
トンガ・ケルマデック / Tofua Volcanic Arc
標高
540m
座標
-18.806, -174.650
最終噴火
1854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 6-km-wide circular island of Late, along the Tofua volcanic arc about 55 km WSW of Vavau, contains a 400-m-wide, 150-m-deep summit crater with an ephemeral lake. The largely submerged basaltic andesite to andesitic volcano rises 1,500 m from the sea floor, with its conical summit reaching 540 m above sea level. Cinder cones are found north of the summit crater, west and north of a semicircular plateau 100-150 m below the summit, and on the NW coast. A graben-like structure on the NE flank contains two large pit craters, the lower of which is partially filled by a saltwater lake. Eruptions from the NE-flank craters produced explosive activity and possible lava flows in 1790 and 1854.

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
1790~1796 · 1件 · 最大 VEI 21848~1854 · 1件 · 最大 VEI 217901803182218351848

詳細タイムライン

  1. 1854年VEI 2観測記録
    1854-07-02 ~ 進行中
    NE flank
  2. 1790年VEI 2観測記録
    1790 ~ 進行中
    NE flank?

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。