簡易檢索 / 詳目顯示

研究生: 許群
Chun Hsu
論文名稱: 臺灣海峽海流的季節與年際變化
Seasonal and interannual variability of the Taiwan Strait current
指導教授: 吳朝榮
Wu, Chau-Ron
學位類別: 碩士
Master
系所名稱: 地球科學系
Department of Earth Sciences
論文出版年: 2006
畢業學年度: 94
論文頁數: 93
中文關鍵詞: 臺灣海峽季節變化年際變化海洋數值模擬
英文關鍵詞: Taiwan strait, seasonal, interannual, numerical modeling
論文種類: 學術論文
相關次數: 點閱:256下載:40
分享至:
查詢本校圖書館目錄 查詢臺灣博碩士論文知識加值系統 勘誤回報
  • 摘要
    本研究建構了一個高解析度的臺灣海峽模式,並利用此模式來研究海峽流場與溫度場之季節與年際變化。模式的初始條件及邊界條件是使用東亞邊緣海模式之輸出結果,水平的網格配置則使用正交曲線座標,模式解析度在海峽內部約3公里向外逐漸遞減至10公里。
    臺灣海峽模式之輸出場與現有的觀測資料比對結果相當一致,可以重建臺灣海峽時空變化的特性。就季節變化而言,風向季節性的轉變對於臺灣海峽有顯著的影響;盛行西南季風的夏季時,海峽流場以北向海流為主,並在彰雲隆起一帶出現上下分層的流場結構。此外,在海峽西部及臺灣灘一帶,有湧升流所造成的低溫區出現。冬季時風場轉為東北風,隨風南下的低溫海水與經海峽凹陷地形北上的溫暖海水在烏坵凹陷一帶相遇,並在海峽北部與中部分別形成U型及順時鐘的環流型態;而溫度場則是呈現南暖北冷的分布狀況。另外,在東北風盛行的冬季,海峽流場對於東北增強事件,也會有相對應的反應歷程。
    就年際變化而言,在2001 ~2003年間的夏季,臺灣海峽西南風場強度以2003年為最強,在此風場的帶動下,海峽西北方低溫區的範圍與強度呈現三年中最明顯的一次。在2002/2003 年ENSO發生的冬季,其東北風較正常年減弱,而使得海峽內部南向傳輸較正常年減弱,此時南向的冷水勢力退縮,而北上的暖水勢力增強,這兩股勢力的消長,因而讓海峽溫度場分布與正常年有所不同。整體而言,風場強度及風向之改變對於臺灣海峽流場與溫度場的變化型態有密切關係,流場與溫度場之季節或是年際變化都直接受到風場的影響。

    目錄 致謝.....................................................I 摘要...................................................III 目錄.....................................................V 圖目錄..................................................VIII 第一章 緒論......................................................1 1.0前言.................................................1 1.1地理環境簡介.........................................1 1.2 文獻回顧............................................3 1.2.1 臺灣海峽之傳輸量.............................3 1.2.2臺灣海峽之流場................................5 1.2.2.1臺灣海峽流場之長期空間分布....................5 1.2.2.2灣海峽流場之季節變化.........................6 1.2.3 臺灣海峽之水團...............................9 1.2.4臺灣海峽之年際變化............................11 1.3 研究目的......................................14 第二章 研究工具與方法...................................17 2.1 研究方法......................................17 2.2普林斯頓海洋數值模式.............................17 2.2.1 POM特色......................................18 2.2.2 POM模式理論..................................20 2.3 東亞邊緣海模式(East Asian Marginal Seas,EAMS)..26 2.4 臺灣海峽模式(Taiwan Strait Model,TSM)..............27 2.4.1 模式設計理念..................................27 2.4.2模式簡介...................................28 2.4.3 模式初始條件與邊界條件的提供與設定...............29 2.4.4 外力........................................30 2.4.5 科氏力參數...............................31 第三章 模式結果及討論...................................36 3.1 模式結果與認證..................................36 3.1.1 臺灣海峽全年平均流況..........................36 3.1.2 臺灣海峽傳輸量...............................38 3.1.3 流速垂直剖面之時間序列.......................39 3.1.4 海峽斷面之流況.............................43 3.1.5 海峽流況對於東北風增強事件的反應歷程............45 3.2 臺灣海峽之季節變化...........................48 3.2.1臺灣海峽風場之變化情況......................48 3.2.2 夏季時海峽流場與溫度場.....................50 3.2.3 冬季時海峽流場與溫度場.....................52 3.3 臺灣海峽之年際變化..........................56 3.3.1 正常年與聖嬰年的定義......................56 3.3.2 風場、傳輸量的年際變化.....................56 3.3.3流場、溫場的年際變化.........................59 第四章 結論與未來工作.................................91 4.1 結論.......................................91 4.2 未來工作.................................93 參考文獻..........................................94 圖目錄 圖.........................................頁碼 圖1-1臺灣海峽水深與等值線圖........................16 圖2-1 Arakawa C 格點配置二維資料之格點配置方式.......32 圖2-2 Arakawa C 格點配置三維資料之格點配置方式..........32 圖2-3空間正交曲線座標表示圖..........................33 圖2-4 σ座標表示圖..............................33 圖2-5東亞邊緣海模式(EAMS)與臺灣海峽模式(TSM)巢狀結構圖..34 圖2-6臺灣海峽模式(TSM)範圍及水平方向格點分布.........35 圖3-1臺灣周邊海域20公尺全年平均流況圖..................65 圖3-2臺灣周邊海域50公尺全年平均流況圖...................66 圖3-3臺灣海峽全年平均流場(模式結果)....................67 圖3-4 1999/10~1999/11臺灣海峽傳輸量...................68 圖3-5 1999/09/24~1999/12/14烏坵風速與C1站順沿海峽方向流速 .........................................................69 圖3-6 1999/09/24~1999/12/14 C2站順沿海峽方向流速.......70 圖3-7 1999/09/24~1999/12/14 C3站順沿海峽方向流速.......71 圖3-8 1999/09/24~1999/12/14 C4站順沿海峽方向流速.......72 圖3-9三次東北風增強事件,事件前、中、後海峽上順沿海峽方向之流速空間分布圖(觀測結果)...............................73 圖3-10三次東北風增強事件,事件前、中、後L1測線上順沿海峽方向流速空間分布圖(TSM結果).................................74 圖3-11臺灣海峽流況對於東北風增強事件的反應歷程圖(模式結果) ..................................................75 圖3-12東吉島與QuikSCAT風場資料散佈圖...................76 圖3-13東吉島氣象站1999至2003年逐月平均之風場棍棒圖.......77 圖3-14臺灣海峽7月平均流場(模式結果).................78 圖3-15臺灣海峽7月平均溫度場(模式結果)...............79 圖3-16臺灣海峽1月平均流場(模式結果)..............80 圖3-17臺灣海峽1月平均溫度場(模式結果) ..............81 圖3-18 Niño 3.4範圍圖..................82 圖3-19 1999~2003年間ONI變化曲線圖......................82 圖3-20聖嬰現象、風場與傳輸量之關係圖.............83 圖3-21 2001年7月溫度場與風速場空間分布............84 圖3-22 2002年7月溫度場與風速場空間分布...............85 圖3-23 2003年7月溫度場與風速場空間分布..........86 圖3-24 TSM 2001年8月平均流場(10公尺) ................87 圖3-25 10~12月20公尺流場結果(模式結果) .............88 圖3-26 10~12月20公尺溫度場結果(模式結果) ...................89 圖3-27 2000年10~12月流場與風速場結果(模式結果) ............90

    參考文獻
    林勝豐, (2005) : 臺灣海峽海潮流之研究,博士論文,國立臺灣大學海洋研究所。
    范光龍、林國龍、張毓堯, (2004) : 臺灣聖嬰現象與降雨量的關係。2004年海洋科學成果發表會摘要論文集p.55。
    侯偉萍, (2004) : 南海週遭海域二氧化碳之研究,碩士論文,國立中山大學海地化研究所。
    郭慧敏(2004) : 臺灣海峽水團時空變化之研究,碩士論文,國立中山大學海洋物理研究所。
    唐存勇、吳明進, (1992) : 什麼是ENSO事件?科學月刊,23,25-31。
    潘家緯,袁業立,鄭全安, (1997) : 用Geosat高度計數據觀測黑潮流系的低頻變化II.季節及年際變化分析。海洋學報,19,p51-62。

    Blumberg, A. F., B.N. Kim, S. O'Neil, J.K.Lewis, P.J. Stein, S.D. Rajan, R.L. Schaffer, M.T. Calef, T. Curtin, S.K. Numrich, W. Smith, and P.Maassel, (2000) : Use of Orthogonal Curvilinear Grids for the Representation of the Littoral Ocean Environment. Maassel, Proc. of Spring 2000 Simulation Interoperability Workshop, Paper No. 00S-SIW-118.

    Chao, S. Y., P. T. Shaw, and S. Y. Wu, (1996) : El Niño modulation of the South China Sea circulation. Progress in Oceanography 38 , 51-93.

    Chen, C. T. A., and S. L. Wang, (1999) : Carbon, alkalinity and nutrient budgets on the East China Sea continental shelf, J. Geophy. Res., 104, 20675– 20686.

    Chu, T. Y., (1961) : On ocean currents in East China Sea and the Variability of Taiwan. Meteorolo gical Bulletin 4, 7–17 (in Chinese with English abstract).

    Chu, T. Y., (1971) : Environmental study of the surrounding waters of Taiwan. Acta Oceanographica Taiwanica 1, 15–32.

    Chuang, W. S., (1986) : A note on the driving mechanisms of current in the Taiwan Strait. Journal of the Oceanographical Society of Japan , 42 (5), 355-361.

    Chuang, W. S., (1988) : Comments on Wind-forced transport
    fluctuations of the Florida Current. Journal of Physical Oceanography 18 (11), 1755–1756.

    Ezer, T., and G. L. Mellor(1994) : Diagnostic and prognostic calculations of the North Atlantic circulation and sea level using a sigma coordinate ocean model. J. Geophys. Res., 99(C7), 14,159-14,171.

    Guo, X., H. Hukuda, Y. Miyazawa, and T. Yamagata,(2003) : A Triply Nested Ocean Model for Simulating the Kuroshio – Roles of Horizontal Resolution on JEBAR . J. Phys. Oceanogr., 33, 146 – 169.

    Hong, H.S., Qiu, S.Y., Ruan, W.Q. ,et al., (1991) : Minnan–Taiwan Bank Fishing Ground Upwelling Ecosystem Study. Science Publishing Housing, Beijing, China.

    Ho, C. R., N. J. Kuo, S. J. Huang, and W. P. Tsai, (2002) : Observations of the intrusion of Kuroshio into South China Sea from satellite infrared images. The Ninth Workshop of OMISAR (WOM-9) on the Application and Networking of Satellite Data, Ho Chi Minh City, Vietnam, pp. 8-1~8-7.

    Hu, Jianyu, H. Kawamura, H.S. Hong Masateru Suetsugu, and Mingsen Lin, (2001) : Hydrographic and Satellite Observations of Summer -time Upwelling in the Taiwan Strait:A Preliminary Description. Terrestrial, Atmospheric and Oceanic ciences 12(2),415-430.

    Huh, C. A., and C. C. Su, (1999) : Sedimentation dynamics in the East China Sea elucidated from 210Pb, 137Cs and 239,240Pu . Mar. Geology, 160, 183–196.

    Jan, S., and S. Y. Chao, (2003) : Seasonal variation of volume transport in the major inflow region of the Taiwan Strait: the Penghu Channel. Deep-Sea Res. II, 50, 1117-1126.

    Jan, S., Chern, C.S., and Wang, J., (1994a) : A numerical study on currents in Taiwan Strait during summertime. La mer 32 (4), 225–234.

    Jan, S., Chern, C.-S., and Wang, J., (1994b) : Influences of sea surface wind stresses on summertime flow pattern in the Taiwan Strait. Acta Oceanographica Taiwanica, 33, 63-80 (in Chinese with English abstract).

    Jan,S. , J. Wang, C. S. Chern, and S. Y. Chao, (2002) : Seasonal variation of the circulation in the Taiwan Strait . Journal of Marine System, 35, 3-4, 249-268

    Ko, D. S., R. H. Preller, G. A. Jacobs, T. Y. Tang, and S. F. Lin, (2003) : Transport reversals at Taiwan Strait during October and November 1999. J. Geophy. Res., 108, 3370, 10. 1029/2003JC001836.

    Kuo , N.J., and C.R. Ho, (2004) : ENSO effect on the sea surface wind and sea surface temperature in the Taiwan Strait , Geophys. Res. Lett., 31, L13309, doi:10.1029/2004GL020303.

    Lee, M.A., J.D. Yeah, C.H. Cheng, J.W. Chan, and K.T. Lee, (2003) : Empirical orthogonal function analysis of AVHRR sea surface temperature patterns in Taiwan Straits. J. Mari. Science & Technology, 11:1-7.

    Levitus, S., R. Burgett, and T. Boyer, (1994) : World Ocean Atlas 1994. Vol. 3: Salinity. NOAA Atlas NESDIS 3, U.S. Gov. Printing Office, Wash., D.C., 99 pp.

    Levitus, S., and T. Boyer, (1994) : World Ocean Atlas 1994. Vol. 4: Temperature. NOAA Atlas NESDIS 4, U.S. Gov. Printing Office, Wash., D.C., 117 pp.

    Liang, W. D., T. Y. Tang, Y. J. Yang, M. T. Ko, and W. S. Chuang, (2003) : Upper-ocean currents around Taiwan. Deep-Sea Res. II, 50, 1085-1105.

    Lin, S. F., T. Y. Tang, S. Jan, and C. J. Chen, (2005) : Taiwan Strait current in winter. Cont. Shelf Res, 25, 1023-1042

    Mask, A. C., J. J. O’Brien, and R. Preller , (1998): Wind-driven effects onthe Yellow Sea Warm Current .J. Geophys. Res., 103, 30,713– 30,730.

    McPhaden, M. J., (1999) : Genesis and evolution of the 1997–1998 El Nin˜o. Science, 283, 950– 954.

    Mellor, G. L., and T. Yamada, (1982): Development of a turbulence closure model for geophysical fluid problems. Rev. Geophys. and Space Phys., 20(4), 851-875.

    Mellor, G. L., L. Y. Oey, and T. Ezer, (1998) : Sigma coordinate pressure gradient errors and the seamount problem. Journal of Atmospheric and Oceanic technology, 15, 1122 – 1131.

    Mellor, G. L., (2004) : USERS GUIDE for A THREE-DIMENSIONAL, PRIMITIVE EQUATION, NUMERICAL OCEAN MODEL. Program in Atmospheric and Oceanic Sciences, Princeton University, Princeton, NJ 08544 – 0710. The revision : June 2004.

    Nitani, H., (1972) : Beginning of the Kuroshio. In: Stommel, H., Yoshida, K. (Eds.), Kuroshio, Its Physical Aspects. University of Tokyo Press, Tokyo, pp. 129–163.

    Orlanski, I., (1976) : A simple boundary condition for unbounded hyperbolic flows. Journal of Computational Physics, 21,16 251 – 269.

    Qu, T., Y.Y. Kim, M. Yaremchuk, T. Tozuka, A. Ishida, and T. Yamagata, (2004) : Can Luzon Strait transport play a role in conveying the impact of ENSO to the South China Sea? J. Climate, 17 (18), 3643-3656.

    Tang, D.L, D. R. Kester, I. H. Ni, H. Kawamura, and H. Hong, (2002): Upwelling in the Taiwan Strait during the summer monsoon detected by satellite and shipboard measurements. Remote Sens. Environ., 83, 457-471.

    Sannino, G., A. Bargagli, and V. Artale(2002) : Numerical modeling of the mean exchange through the Strait of Gibraltar J. Geophy. Res., 107(0), 10.1029/2001JC000929.

    Shulman, I., C. R. Wu, J. K. Lewis, J. D. Paduan, M. S.Rosenfeld, L. K. Kindle, S. R. Ramp, and C. A.Collins, (2002) : High resolution modeling and data assimilation in the Monterey Bay area. Cont. Shelf Res, 22, 1129-1151.

    Tang, D. L.; H. Kawamura, and L.Guan , (2004) : Long-time observation of annual variation of Taiwan Strait upwelling in summer season. Advances in Space Research, Volume 33, Issue 3, p. 307-312.

    Tozuka, T., T. Kagimoto, Y. Masumoto, and T. Yamagata, (2002) : Simul - ated multiscale variations in the western tropical Pacific: The Mindanao Dome revisited. J. Phys. Oceanogr., 32, 1338–1359.

    Trenberth, K. E., J. C. Olson, and W. G. Large, (1989) : A Global Ocean Wind Stress Climatology Based on ECMWF Analyses Tech. rep. NCAR /TN-338+STR, National Center for Atmospheric Research,Boulder, Colorado. 98 pp.

    Tseng, R.S. and Y.-T. Shen, (2003) : Lagrangian observations of surface flow patterns in the vicinity of Taiwan, Deep-Sea Research, II, 50, 1107-1115 NSC85-2611-P-110-005

    Wang, J. and C.S. Chern , (1988) : On the Kuroshio branch in the Taiwan Strait during wintertime. Progress in Oceanography 21, 469–491.

    Wang, J. and C.S. Chern, (1989) : On cold water intrusions in the eastern Taiwan Strait during the cold season. Acta Oceanographica Taiwanica 22, 43–67 (in Chinese with English abstract).

    Wang, J. and C.S. Chern , (1992) : On the distribution of bottom cold waters in Taiwan Strait during summertime. La mer 30, 213-221.

    Wang, Y. H, S. Jan, and D. P. Wang, (2003) : Transports and tidal current estimates in the Taiwan Strait from shipboard ADCP observations (1999 - 2001). Estuarine Coastal Shelf Sci., 57, 193-199.

    Webster, P. J. and T. N. Palmer, (1997) : The past and future of El Nino. Nature., December 12, 390, 562-564.

    Wu, C.R. and Y.C. Hsin, (2005) : Volume transport through the Taiwan Strait : A Numerical Study. Terrestrial, Atmospheric and Oceanic Sciences, 16(2), 377-391.

    Wyrtki, K., (1961) : Physical oceanography of the southeast Asia waters. Scientific results of marine investigations of the South China Sea and Gulf of Thailand. 1959-1961, Naga Report, 195pp.

    Xue, H., F. Chai, N. Pettigrew, and D. Xu, (2004) : Kuroshio intrusion and the circulation in the South China Sea. Geophys. Res. Lett, 28,1059-1062.

    QR CODE