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| 研究生： |
林永富 Yomg-Fu Lin |
|---|---|
| 論文名稱： |
黑潮入侵東海之研究 Interannual variability of the Kuroshio intrusion onto the shelf of the East China Sea |
| 指導教授： |
吳朝榮
Wu, Chau-Ron |
| 學位類別： |
碩士 Master |
| 系所名稱： |
海洋環境科技研究所 Graduate Institute of Marine Environmental Science and Technology |
| 論文出版年： | 2013 |
| 畢業學年度： | 101 |
| 語文別： | 中文 |
| 論文頁數： | 32 |
| 中文關鍵詞： | 黑潮 |
| 英文關鍵詞： | Kuroshio |
| 論文種類： | 學術論文 |
| 相關次數： | 點閱：128 下載：26 |
| 分享至: |
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黑潮是北太平洋中最重要的西方邊界流，北赤道洋流由東向西流，遇到民答那峨島分支成南北兩股海流，向北的支流為黑潮，流經菲律賓東岸、呂宋海峽與台灣東部海岸。當黑潮流經台灣東北時，因遇到東西走向的東海陸棚，使得原本向北流動轉而向東流，大約沿著200公尺等深線流往日本東岸，黑潮在台灣東北部有季節性擺動的現象，在夏季時，容易向離岸(向東)方向擺動；在冬季時，容易向靠岸(向西)方向擺動，並進而入侵東海陸棚。本研究主要是利用1993年至2010年的衛星觀測資料來研究台灣東北部海流的時空變化，尤其是黑潮入侵東海陸棚的現象，我們定義經度121.67°E至122.5°E，緯度25.5°N至26.4°N之平均流速為黑潮入侵東海陸棚的指標 (Kuroshio Intrusion index, K. I. 指標)，結果發現在年際變化上K. I. 指標與氣候指標(如ENSO、PDO和PTO等)有顯著的相關性，在1997/98年與2002/03年的冬季，當PDO與ENSO皆呈正向時，入侵量有明顯減少的現象。進一步分析，在1997/98年的冬季，是受到熱通量梯度的改變所影響。2002/03年的冬季則是受到由東向西傳的中尺度渦漩靠近黑潮所影響，反氣旋渦漩容易造成黑潮向東蜿蜒，使得入侵量減少。
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