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Updated: Jul 12, 2026

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Evolution of Staircase Structures in Diffusive Convection
Published on: September 5, 2018
グリーンランド海における深層換気手段としての長寿の渦
Jean-Claude Gascard1, Andrew J Watson, Marie-José Messias
1Université Pierre et Marie Curie, Laboratoire d'Océanographie Dynamique et de Climatologie, 75252 Paris cedex 05, France. gascard@lodyc.jussieu.fr
Nature
|April 5, 2002
まとめ
グリーンランド海の深層コンベクト渦は,海洋の混合に重要な役割を果たしています. この長寿の渦は,大西洋と極地の海を500メートル以下の深さまで運び,海洋密度形成に影響を与えます.
科学分野:
- 海洋学 海洋学 海洋学
- 物理海洋学 物理海洋学
- 北極の海洋学 北極の海洋学
背景:
- グリーンランド海は,深海のコンベクションの重要な場所であり,密集した水質を形成します.
- 深層コンベクト渦がコンベクトの発生と成長に与える影響は,まだ十分に理解されていません.
研究 の 目的:
- グリーンランド海内の深層コンベクションにおけるサブメソスケールコヒーレント渦の役割を調査する.
- これらの渦が水の質量変換と輸送に与える貢献を定量化するために.
主な方法:
- トレーサー,フロート,水文観測を用いた.
- 分析されたデータは,長寿 (約. 1年) とコンパクト (約1年). 5kmの中核直径) の渦が,2kmの深さに達する.
主要な成果:
- グリーンランド海の近くで冬に形成される渦が観測された.
- 渦は数日の周期で時計回りの方向に回転する.
- エディ・コアは,大西洋と極地の水域を改変した混合物で,500m以下の深さに達します.
結論:
- 亜メソスケールのコヒーレントの渦は,グリーンランド中央海における大西洋と極地の水の混合に大きく寄与する.
- これらの渦は,水質が中程度の深さまで進んでいることを理解するために不可欠です.
- この発見は,グリーンランド海における深層コンベクションの過程の記述を強化する.
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