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アスンシオン島

Asuncion

成層火山 · United States · 857m

An aerial view from the SW shows the upper slopes of Asuncion in the northern Mariana Islands. It forms a circular 3-km-wide island that has had no permanent residents since the late 17th century. An explosive eruption in 1906 produced lava flows that descended about halfway down the W and S flanks.
An aerial view from the SW shows the upper slopes of Asuncion in the northern Mariana Islands. It forms a circular 3-km-wide island that has had no permanent residents since the late 17th century. An explosive eruption in 1906 produced lava flows that descended about halfway down the W and S flanks. · 写真: Photo by Richard Moore, 1992 (U.S. Geological Survey). · Wikimedia Commons
タイプ
成層火山
United States
地域
北西太平洋 / Mariana Volcanic Arc
標高
857m
座標
19.671, 145.406
最終噴火
1906年
テクトニクス環境
Subduction zone / Crustal thickness unknown
火山地形
Composite
主要岩石
Andesite / Basaltic Andesite
地質学的概要

A single large asymmetrical stratovolcano forms 3-km-wide Asuncion Island. The steeper NE flank terminates in high sea cliffs, while the gentler SW flanks have low-angle slopes bounded by sea cliffs only a few meters high. The southern flank is cut by a large landslide scar. The S and W flanks are covered by ash deposits. An explosive eruption in 1906 produced lava flows that descended about halfway down the W and SE flanks, but several other eruption reports are of uncertain validity.

Wikipedia の要約

英語版の要約

Asuncion is an island in the Mariana Islands chain in the Pacific Ocean. The island is uninhabited. Asuncion is situated 101 kilometers northwest of Agrihan and 37 km southeast of the Maug Islands. The island is part of the Commonwealth of the Northern Mariana Islands.

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
1690~1713 · 1件 · 最大 VEI ?1760~1784 · 1件 · 最大 VEI 21901~1924 · 2件 · 最大 VEI 216901737180718541901

詳細タイムライン

  1. 1924年VEI 2地質学的推定
    1924-07-02 ~ 進行中
  2. 1906年VEI 2観測記録
    1906-07-02 ~ 進行中
    Upper SE and W flanks
  3. 1775年 (±10年)VEI 2地質学的推定
    1775 ~ 進行中
  4. 1690年 (±10年)VEI ?地質学的推定
    1690 ~ 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。