レイクヤネス山脈の下のホットスポット誘発浮気流の地震的証拠
1School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332, USA.
まとめ
アイスランドのホットスポットは,大西洋中部の山脊の下のマントルの上流に影響を与えます. 地震波分析は異常な偏極化アニソトロピーを明らかにし,ホットスポットによって誘発された浮揚力駆動のマントルフローを示している.
科学分野:
- 地質物理学 地質物理学とは地質物理学です.
- 地球科学 地球科学 地球科学
- マントラダイナミクス マントラダイナミクス
背景:
- 火山のホットスポットや海中の山脊は,マントルのコンベクションの表面的な表れである.
- 彼らの相互作用は,マントルの上昇のダイナミクスについての洞察を提供します.
研究 の 目的:
- アイスランドホットスポットが,大西洋中部の山脊に及ぼす影響を調査する.
- マントルの流れのダイナミクスを交差点で理解する.
主な方法:
- 地震表面波の相遅延時間の分析.
- 異常極化アニソトロピーの測定.
主要な成果:
- 中大西洋の下では異常な偏極化アニソトロピーを観測した.
- アニゾトロピーは,地震波の遅延時間不一致を示している.
結論:
- アイスランドのホットスポットでは,浮力による上昇が顕著に発生します.
- この上流は,隣接するミッド・アトランティック・リッジの下のマントルに影響を及ぼします.
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