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研究生: 陳斯維
論文名稱: 颱風通過臺灣於其東南角離岸生成冷舌之數值研究
A numerical study on the generations of cool jets off southeastern Taiwan in response to typhoons directly striking Taiwan
指導教授: 鄭志文
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: 2014
畢業學年度: 102
語文別: 中文
論文頁數: 70
中文關鍵詞: 颱風黑潮冷舌區域海洋模式系統
英文關鍵詞: Typhoon, Kuroshio, cool jet, ROMS
論文種類: 學術論文
相關次數: 點閱:162下載:17
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  • 2009年莫拉克颱風通過臺灣,在臺灣東南角海域生成獨特的冷舌現象,為了釐清冷舌生成的主導因素,本研究使用區域海洋模式系統(ROMS),模擬2005年至2013年之17個颱風案例;與有限的現場觀測資料,進行系統性的分析,並對這17個通過台灣軌跡的颱風路徑進行研究探討。結果顯示,颱風的行進軌跡分布與冷舌生成之間有密切關聯。而後,在此研究,為了更加瞭解冷舌與軌跡之間的關係,我們進行三個理想化實驗,評估其他因素是否影響冷舌之生成,結果顯示,颱風強度與颱風移度速度皆會影響冷舌的溫降幅度:一般情況下,移動速度越慢,強度越強的颱風,冷舌造成的溫降幅度就越強。我們根據這些系統性的分析結果,能夠預估冷舌的生成,並且預防夏季時,冷舌受黑潮傳輸對沿途周遭之生態環境所造成的影響。

    With the passage of a westward impinging typhoon Morakot (2009) directly through Kuroshio and mid Taiwan, a distinct cool jet generated at the southeast corner off Taiwan and extended toward Kuroshio downstream region. In order to clarify the dominant factor infuencing cool jet, in this study, systematical analyses based on Regional Oceanic Modeling System (ROMS), and limited in-situ measurements with a focus on all tropical cyclones with similar tracks as Morakot from 2003 to 2013 were conducted to elucidate the generations of those cool jets. The results show that the generations of those cool jets are highly sensitive to moving tracks of individual typhoons. Subsequently, three suites of idealized experiments were conducted to provide a more comprehensive view on the contributions from other factors. It shows that including tropical cyclone intensities, translation speed also influence the magnitude of cool jet. Generally, the moving and intensity of typhoon is slower and stronger, the cool jet is stronger. Finally, outline of the impact region was sketched based on the systematic results. With those results, it becomes possible to prevent from cold shock generating in summer time triggered by those cool jets in response to typhoons westward impinging through Taiwan.

    目錄 致謝 II 摘要 III Abstract IV 目錄 V 表目錄 VIII 圖目錄 VIII 第一章 緒論 1 1.1 區域介紹 1 1.2 文獻回顧 1 1.3 研究動機與目的 4 第二章 資料來源與研究方法 6 2.1 資料簡介 6 2.2 研究方法 8 第三章 結果與討論 12 3.1. 氣象局第二類軌跡路線 12 3.1.1 2007年柯羅莎颱風 13 3.1.2 2008年辛樂克颱風 14 3.1.3 2008年薔密颱風 15 3.1.4 2008年卡玫基颱風 16 3.1.5 2012年蘇拉颱風 16 3.1.6 2013年蘇力颱風 17 3.2. 氣象局第三類軌跡路線 18 3.2.1 2005年海棠颱風 18 3.2.2 2005年泰利颱風 19 3.2.3 2005年龍王颱風 20 3.2.4 2006年凱米颱風 21 3.2.5 2007年梧提颱風 22 3.2.6 2007年聖帕颱風 23 3.2.7 2008年鳳凰颱風 24 3.2.8 2009年莫拉克颱風 25 3.3. 氣象局第四類軌跡路線 26 3.3.1 2006年寶發颱風 27 3.3.2 2007年帕布颱風 27 3.4. 成功氣象站的水溫資料 28 3.5. 理想颱風實驗 28 第四章 結論與展望 30 4.1 綜合討論 30 4.2 未來展望 31 參考文獻 33

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