サルガスム 大西洋のメソスケール・ワディの濃縮
Yingjun Zhang1, Brian B Barnes1, Dennis J McGillicuddy2
1College of Marine Science, University of South Florida, St. Petersburg, FL, United States.
まとめ
サルガッサムとして知られる大きな海藻の花は,大西洋サルガッサムベルト内のサイクロニックの海渦に多く集中しています. この発見は,サーガッサム除去の取り組みを より効果的にターゲットにするのに役立ちます.
科学分野:
- 海洋学
- 海洋生物学
- リモートセンシング
背景:
- ペラジック・サーガサムは 過去10年間で著しく増加しました
- 大西洋サルガッサムベルト (GASB) は,繰り返しサルガッサムが咲く主要な地域です.
研究 の 目的:
- サーガスの密度とメソスケールの渦の関係を調べるため
- 海洋の渦の中に サルガッサムが蓄積されているかどうか
主な方法:
- 2011年から2023年のサーガッサム密度の衛星観測を用いた.
- サルガサムの観測と並行してメソスケール渦のデータを分析した.
主要な成果:
- サイクロン渦は,周囲の水域と比較して6%~47%高いサーガサス濃度を示した.
- サルガッサムの密度は,サイクロン渦の内核で最高でした.
- アンチサイクロン渦の影響は地域特有のもので,一般的に弱かった.
結論:
- メソスケール渦,特にサイクロン渦は,ペラジック・サーガッサムの重要な蓄積体として作用する.
- 発見は,渦巻の場所に焦点を当てた標的のサラガスム緩和戦略を支持しています.
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