フロリダ州の現在の輸送量の指標としての海面変動:直接的な測定と比較
Science (New York, N.Y.)
|January 18, 1985
まとめ
現在のボリューム輸送は,海面と圧力のデータを組み合わせて実行可能である. 簡単に得られた観測は,フロリダ海峡の毎日の変動を正確に追跡することができます.
科学分野:
- 海洋学 海洋学とは
- 流体力学 流体力学とは
- 地質物理学 地質物理学とは地質物理学です.
背景:
- 海流輸送の正確なモニタリングは,海洋のプロセスを理解するために不可欠です.
- フロリダ流は,大西洋南極反転循環の重要な構成要素です.
- 量輸送の直接的な測定は,資源密集的である.
研究 の 目的:
- フロリダの流れの体積輸送をモニタリングするために,海面と底圧データを使用する有効性を評価する.
- 日々の輸送量変動を追跡するための費用対効果の高い方法を開発する.
- 水文学的および地質学的測定を直接的な輸送観測と相関させるため.
主な方法:
- 潮位計と底圧データとの相関分析と直接の体積輸送観測.
- フロリダ州マイアミとバハマ州キャットケイの海面データを活用した.
- フロリダ州木星とバハマ州メモリー・ロックからの底圧測定を用いた.
- 底圧,気象,海底ケーブルデータを組み込む線形多変数回帰を適用した.
主要な成果:
- 木星からの底圧は,輸送と高い相関関係 (r2 = 0.93) を示した.
- 調整されたマイアミの海面データから r2 = 0.74.7 の相関が得られました.
- 複数のデータソースを組み合わせた多変数回帰モデルは,最も高い相関性を達成した (r2 = 0.94).
- 輸送の推定における標準誤差は,+/- 1.1から+/- 1.9×10^6 m3/sの範囲であった.
結論:
- 海水位と底圧の測定は,フロリダの流れの輸送を監視するための効果的な代理です.
- 簡単に入手可能な観測を組み合わせることで,輸送変動の毎日のモニタリングに十分な精度が得られます.
- このアプローチは,直接的な,労働集約的な輸送測定に対する実用的な代替案を提供します.
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