マルシリ海山
Marsili
複成火山 · Italy · 779m (海底)
- タイプ
- 複成火山
- 国
- Italy
- 地域
- European Volcanic Regions / Aeolian Volcanic Arc
- 標高
- 779m (海底)
- 座標
- 39.284, 14.399
- 最終噴火
- -1050年
- 火山地形
- Composite
地質学的概要
The Marsili seamount is a 50-km-long volcanic ridge in the southern Tyrrhenian Sea within a back-arc basin about 75-85 km NW of the Aeolian arc volcanoes. Near-source tephra layers obtained from a core sample were determined by Iezzi et al. (2013) to be approximately 3,000 and 5,000 years old. Accretion of the ridge is thought to have begun around 1 Ma. Recent data also indicate that there is ongoing hydrothermal activity and shallow volcano-tectonic seismicity.
Wikipedia の要約
英語版の要約Marsili is a large undersea volcano in the Tyrrhenian Sea, about 175 kilometers (109 mi) south of Naples. The seamount is about 3,000 m tall; its peak and crater are about 450 m below the sea surface. Though it has not erupted in recorded history, volcanologists believe that Marsili is a relatively fragile-walled structure, made of low-density and unstable rocks, fed by the underlying shallow magma chamber. Volcanologists with the Italian National Institute of Geophysics and Volcanology (INGV) announced on March 29, 2010, that Marsili could erupt at any time, and might experience a catastrophic collapse that would suddenly release vast amounts of magma in an undersea eruption and landslide that could trigger destructive tsunamis on the Italian coast and nearby Mediterranean coastlines.
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噴火履歴
詳細タイムライン
- 紀元前 1050年 (±200年)VEI ?地質学的推定BCE 1050 ~ 進行中
- 紀元前 3050年 (±200年)VEI ?地質学的推定BCE 3050 ~ 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。