サントリーニ と コロンボ の マグマ システム が 結合 し て いる こと が 明らか に なっ た
Marius P Isken1, Jens Karstens2, Paraskevi Nomikou3
1GFZ Helmholtz Centre for Geosciences, Potsdam, Germany. marius.isken@gfz.de.
Nature
|September 24, 2025
まとめ
2025年の火山の危機は サントリーニとコロンボの火山の間のマグマ系を明らかにしました マグマはコロンボの下の深い貯水池から移動し サントリーニの下の堤防として侵入し 複雑な火山の相互作用を示しました
科学分野:
- 火山学
- 地理学
- 構造学
背景:
- エーゲー海のサントリーニとコロンボの火山は 地理的に近いが 深いマグマのつながりは 十分に理解されていない.
- 火山の危機は 地下マグマのプロセスと火山システムの構造に 洞察を与えます
研究 の 目的:
- サントリーニとコロンボの火山の 潜在的に結合したマグマの栄養システムを調査する
- 両火山の中心に影響を与える2025年の火山構造の危機中のマグマの移動を再現する.
主な方法:
- 地上と海の地震データを統合する.
- 地表と衛星による変形データを含む地質測定の利用.
- マグマの侵入をモデル化するための関節逆転技術.
主要な成果:
- コロンボの下にある地殻の中央の貯水池は,マグマで満たされた堤防を発生させ,2024年半ばからサントリーニに侵入しました.
- 約0.31立方キロメートルのマグマが13キロメートルの堤防として侵入し,地域の断層を活性化しました.
- 堤防の侵入は海底から3〜5キロで停止し 2025年の危機で2つの火山系を結びました
結論:
- 2024-2025年の危機は,サントリーニとコロンボのマグマシステム間のダイナミックな結合を示しました.
- 近隣の火山の下にあるマグマの貯蔵,輸送,貯蔵庫の故障メカニズムについての洞察が得られます.
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