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研究生:謝委娟
研究生(外文):Wei-juan Shieh
論文名稱:衛星觀測南海北部冬季細微水溫鋒面特性
論文名稱(外文):Satellite-derived finer-scale SST front in winter in the northern South China Sea
指導教授:李明安李明安引用關係
指導教授(外文):Ming-an Lee
學位類別:碩士
校院名稱:國立臺灣海洋大學
系所名稱:環境生物與漁業科學學系
學門:農業科學學門
學類:漁業學類
論文種類:學術論文
論文出版年:2007
畢業學年度:95
語文別:中文
論文頁數:69
中文關鍵詞:衛星遙測水溫鋒面邊緣偵測法呂宋海槽
外文關鍵詞:Satellite remote Sensingsea surface temperature fronedge detection methodLuzon Basin
相關次數:
  • 被引用被引用:5
  • 點閱點閱:268
  • 評分評分:
  • 下載下載:27
  • 收藏至我的研究室書目清單書目收藏:1
本研究利用7年(2001∼2007年)的高解析度(1.1km)衛星SST影像資料,透過邊緣偵測法成功的擷取出南海北部海域冬季細微水溫鋒面特徵。研究結果顯示冬季時,大陸沿岸的冷水(<21°C )有從台灣海峽沿著大陸沿岸朝西南方向進入南海北部海域之現象,至於本海域則出現數個水溫鋒面:(1)“大陸沿岸鋒面” 於大陸沿岸水域沿著50公尺等深線分佈,並且由臺灣海峽北部向南延伸至海南島東部沿岸,其鋒面SST GM值約為0.1∼0.2°C/km;(2) “臺灣淺堆鋒面”(GM約為>0.2°C/km)於初冬時出現,並且隨時序推移向大陸沿岸靠近而與大陸沿岸鋒面合併;(3)“東京灣沿岸鋒面” (GM約為0.15°C/km)不僅侷限分佈於海南島西北部,此鋒面向西南延伸至中南半島形成一道新月形之鋒面;(4)黑潮支流入侵巴士海峽南端後即形成一道明顯之鋒面,此即為“黑潮入侵鋒面” (GM為0.15°C/km);此外,本研究亦發現一從呂宋島西北方沿著呂宋海槽由南向北分佈之微弱鋒面,其GM值約為0.1°C/km,此一鋒面命名為“西北呂宋沿岸鋒面”。
This study presents distributions and inter-seasonal evolution of sea surface temperature (SST) fronts in winter in the southern East China Sea (ECS) by applying an edge detection method to 7-year (2001–2007) satellite remote sensing SST images with grid size of 0.01o. From climatological monthly mean maps of SST front in winter, we identify five significant SST fronts in the southern ECS. The Mainland China Coastal Front is a long frontal band along the 50-m isobath near the Chinese coast; it distributes from northern Taiwan Strait and extends southward to the east coast of Hai-Nan Island with large SST gradient magnitude (0.1~0.2°C/km). The Taiwan Bank Front evolves in early winter. As the winter progresses, the front becomes broad and moves toward the Chinese coast, connecting to the Mainland China Coastal Front. The Tonkin Gulf Coastal Front extends southwestward to the southern Vietnam coast with a crescent shape. The Kuroshio Blanch Intrusion Front indicates the intrusion of Kuroshio Blanch Current into the southern Luzon Strait. A newly detected front is found along the Luzon Basin in northwestern Luzon Island coast, it is named Northwest Luzon Coastal Font.
表目錄 ………………………………………………………………Ⅲ
圖目錄 ………………………………………………………………Ⅳ
摘 要 ………………………………………………………………Ⅵ
Abstract ……………………………………………………………Ⅶ
壹、前言 ……………………………………………………………1
一、南海北部海域海洋環境特性概況 ……………………………1
二、衛星遙測特性 …………………………………………………3
三、研究動機 ………………………………………………………5
貳、材料與方法 ……………………………………………………8
一、資料蒐集 ………………………………………………………8
(一)、衛星遙測系統與資料 ………………………………………8
(二)、QuikSCAT風場 ………………………………………………11
二、邊緣偵測法 ……………………………………………………12
1.方法簡述 ..………………………………………………………12
2.單一影像邊緣偵測範例 …………………………………………14
3.鋒面機率圖 ………………………………………………………15
4.鋒面合成圖 ………………………………………………………15
參、結果 ……………………………………………………………17
一、衛星遙測月平均SST影像 ……………………………………17
二、月平均鋒面機率圖 ……………………………………………17
三、月平均水溫梯度分佈圖 ………………………………………18
肆、結論與討論 ……………………………………………………20
1.大陸沿岸鋒面 ……………………………………………………20
2.臺灣淺堆鋒面 ……………………………………………………21
3.東京灣沿岸鋒面 …………………………………………………22
4.黑潮支流入侵鋒面 ………………………………………………23
5.西北呂宋沿岸鋒面 ………………………………………………23
謝辭 …………………………………………………………………26
參考文獻 ……………………………………………………………28
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