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研究生:黃英豪
研究生(外文):Ying-Hao Huang
論文名稱:西太平洋北赤道反流區之衛星觀測
論文名稱(外文):Satellite observations of the North Equatorial Countercurrent in the Western Pacific
指導教授:郭南榮郭南榮引用關係
指導教授(外文):Nan-Jung Kuo
學位類別:碩士
校院名稱:國立臺灣海洋大學
系所名稱:海洋環境資訊學系
學門:工程學門
學類:環境工程學類
論文種類:學術論文
論文出版年:2009
畢業學年度:97
語文別:中文
論文頁數:74
中文關鍵詞:北赤道反流葉綠素甲濃度海表面溫度海表面風場聖嬰經驗正交函數
外文關鍵詞:North Equatorial Countercurrentchlorophyll-a concentrationsea surface temperaturesea surface windEl Ninoempirical orthogonal function
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本研究使用Aqua衛星MODIS儀器的葉綠素甲濃度與海表溫資料及QuikSCAT衛星SeaWind的海表面風場資料,探討西太平洋北赤道反流區海表面特性之變化。研究結果顯示高葉綠素甲濃度主要分布在西南側,就季節而言,每年1至3月濃度最高且分布均勻,7至9月濃度最低。而海表溫方面,研究區的高溫主要在南邊,12、1及2月北邊的低溫向南延伸,而在7至9月西側外圍有冷水形成,致研究區的西側溫度呈現些微下降。至於海表面風場,1至3月時風速最強,主要為東北風,7月開始轉變為西南風,12月時又轉吹東北風。此外,透過經驗正交函數分析發現,聖嬰時,研究區的葉綠素甲濃度增加,而海表溫下降。反聖嬰時,則葉綠素甲濃度下降,海表溫升高。風速方面,反聖嬰時有增強現象,聖嬰時變化不大。
The research is based on the data of the Aqua satellite Moderate Resolution Imagining Spectroradiometer (MODIS) and Quick Scatterometer (QuikSCAT) satellite SeaWinds to analyze and investigate the spatial and temporal variations of the chlorophyll-a concentration (Chl-a), sea surface temperature (SST) and sea surface wind (SSW) in the area of the North Equatorial Countercurrent in the western Pacific Ocean. The result shows the higher Chl-a in the southwestern area. Meanwhile, the highest and spatially homogeneous Chl-a happens in January-March, while the lowest Chl-a in July-September. From SST observation, the higher temperature mainly in the south, the colder water will move southward in December, January and February. A special cooling in the western side happens in July-September because of a cold plume happening outside the west part in these months. From SSW observation, it is northeasterly and the strongest in January-March, then it turns to be southwesterly from July, and the northeasterly again in December. The analysis of empirical orthogonal function indicates Chl-a increasing with SST decreasing during El Nino period, the reversed situation in La Nina. For SSW, there is no obvious influence of El Nino, while La Nina induces SSW increasing.
謝辭 I
摘 要 II
Abstract III
目 錄 IV
表目錄 VI
圖目錄 VII
第一章 前言1
第二章 資料來源與研究方法5
2.1 資料來源5
2.1.1 海表面葉綠素甲濃度5
2.1.2 海表面溫度5
2.1.3 海表面風場6
2.1.4 南方振盪指數6
2.2 研究方法7
第三章 結果與討論 10
3.1 葉綠素甲濃度衛星影像分析10
3.1.1 葉綠素甲濃度之長期衛星影像變化10
3.1.2 葉綠素甲濃度之EOF分析11
3.2 海表面溫度衛星影像分析12
3.2.1 海表面溫度之長期衛星影像變化12
3.2.2 海表面溫度之EOF分析13
3.3 海表面風場衛星影像分析14
3.3.1 海表面風場之長期衛星影像變化14
3.3.2 海表面風場之EOF分析15
3.4 研究區內特定點之探討16
3.4.1葉綠素甲濃度方面16
3.4.2海表面溫度方面17
3.4.3海表面風場方面17
3.4.4風場、濃度與溫度三方面之綜合分析比較17
3.5南方振盪指數與研究區內特定點之相互關係19
3.5.1葉綠素甲濃度與南方振盪指數之相互關係20
3.5.2 海表面溫度與南方振盪指數之相互關係21
3.5.3 海表面風場與南方振盪指數之相互關係21
第四章 結論23
參考文獻25
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