コメント on "と風の相互作用は,海中プランクトンの異常な咲き方を刺激する"
Amala Mahadevan1, Leif N Thomas, Amit Tandon
1Department of Earth Sciences, Boston University, Boston, MA 02215, USA.
Science (New York, N.Y.)
|April 26, 2008
まとめ
渦巻き/風の相互作用ではなく,亜メソスケールの海洋プロセスが,栄養素の供給を増やすことにより,海中プランクトンの開花を助長する可能性が高い. これらの周辺的プロセスは,より強い垂直の水の動きを生み出し,海洋の渦に栄養素の流れを促します.
科学分野:
- 海洋学 海洋学とは
- 海洋生態学 海洋生態学
- バイオジオケミストリー バイオジオケミストリー
背景:
- 以前の研究では,渦/風の相互作用が水渦のモードで栄養素の流れを駆動し,大きなプランクトン開花をサポートすることを示唆していました.
- この研究では,海洋の渦に栄養素を供給するための代替メカニズムを調査しています.
研究 の 目的:
- 海洋の渦に栄養素を供給する主な要因を再評価する.
- 栄養素の流れにおける渦/風の相互作用の提案された役割に異議を唱えるため.
- 海洋栄養循環における亜メソスケールプロセスの重要性を強調する.
主な方法:
- エディダイナミクスに焦点を当てた海洋学データの分析.
- 異なる海洋プロセスからの垂直速度の大きさの比較.
- 渦中のエネルギー伝達機構の理論的評価.
主要な成果:
- 渦の周辺で作用するサブメソスケールプロセスは,実質的な垂直速度を生成します.
- これらの速度は,渦/風の相互作用によって誘発される速さよりも大幅に大きい.
- 渦への栄養供給は,サブメソスケールダイナミクスによってより強く影響されます.
結論:
- サブメソスケールプロセスは,海洋の渦に栄養素を供給する支配的なメカニズムです.
- 渦と風の相互作用が垂直の栄養源に与える影響は,おそらく過大評価されている.
- サブメソスケールダイナミクスの理解は,海中プランクトンブローム形成を予測するために重要である.
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