台灣東北部海域受到海底地形複雜的影響，黑潮在台灣東部向北越過沖繩海槽時，會有部分支流從深海處沿著海底峽谷入侵到東海的大陸棚，形成溫度較冷且富有營養物質的湧升流。該湧升流與附近的台灣海峽北向輸出流以及黑潮之間有彼此牽引的關係，容易在湧升流周圍形成冷水渦漩。颱風是西北太平洋常出現的短時間且強力的氣候因子，夏秋季時常常通過台灣周遭海域，對此冷水渦漩結構和附近海水表面流的趨勢造成影響，而不同的颱風通過路徑會對相同地區帶來不等量的影響。前人研究多著墨於颱風路徑通過台灣本島中、北部的案例作分析，而其他路徑種類的颱風事件研究較為缺乏。本研究使用影像匹配技術應用於地球同步衛星逐時所拍攝的海洋水色影像上，計算出流場後再比對海水表面溫度衛星影像和海底地形，並深入分析和討論，發現颱風通過台灣北部海域時對台灣東北海域表面流的牽引作用較明顯，路徑通過台灣南部海域的颱風事件對本處影響則較不明顯，另外從所計算的流場也觀察到在海底地形深度約200公尺處較容易出現匯聚流的情形，暗示此處與湧升流可能會形成立體的循環結構。

The Kuroshio at the ocean of northeastern Taiwan is influenced by the complex seafloor topography. As the Kuroshio crosses through the I-lan ridge to the Okinawa trough northly, a part of tributary intrudes into the continental shed of East China Sea from the deep ocean, and therefore forms an upwelling current with colder temperature and richer nutrients.
There is an interactive relation among the upwelling current, the nearby Taiwan strait northward output flow and the Kuroshio, so the cold eddy or cold dome easily formats nearby the upwelling current region.
During summer and autumn, the typhoons usually pass through Taiwan and around ocean. As they pass by, the cold eddy or cold dome structure and the nearby sea surface current flow will be impacted by them. Different typhoon paths will cause different impact in the same specific region. The previous studies concern much on the cases which their paths pass the central or north part of Taiwan island. The study of other path types of typhoon events is limited.
In this research, we apply the image matching technique to the hourly ocean color images aquired by the geostationary satellite. After calculating the flow field, we discuss its relationship with the sea surface temperature and the seafloor topography. We find out that the impact of typhoon passes through the northern ocean to the northeastern Taiwan ocean upwelling current is stronger than the cases pass through southern Taiwan. Besides, we also observe that there is a higher chance to observe a converge flow at the seafloor 200 meter depth, it suggests that there is an 3-D flow cycle structure.

Chang, Y., H. T. Liao, M. A. Lee, J. W. Chan, W. J. Shieh, K. T. Lee, G. H. Wang, and Y. C. Lan (2008), Multisatellite observation on upwelling after the passage of Typhoon Hai‐Tang in the southern East China Sea, Geophysical Research Letters, 35(3).
Chao, S.-Y. (1990), Circulation of the East China Sea, a numerical study, Journal of Oceanography, 46(6), 273-295.
Chen, C.-C., S. Jan, T.-H. Kuo, and S.-Y. Li (2017), Nutrient flux and transport by the Kuroshio east of Taiwan, Journal of Marine Systems, 167, 43-54.
Chern, C.-S., and J. Wang (1990), On the mixing of waters at a northern offshore area of Taiwan, Terrestrial, Atmospheric and Oceanic Sciences, 1(3), 297-306.
Choi, J. K., Y. J. Park, J. H. Ahn, H. S. Lim, J. Eom, and J. H. Ryu (2012), GOCI, the world's first geostationary ocean color observation satellite, for the monitoring of temporal variability in coastal water turbidity, Journal of Geophysical Research: Oceans, 117(C9).
Chung, H.-W., and C.-C. Liu (2019), Spatiotemporal Variation of Cold Eddies in the Upwelling Zone off Northeastern Taiwan Revealed by the Geostationary Satellite Imagery of Ocean Color and Sea Surface Temperature, Sustainability, 11(24), 6979.
Crippen, R. E. (1992), Measurement of subresolution terrain displacements using SPOT panchromatic imagery.
Gibson, S., V. Kreinovich, L. Longpre, B. Penn, and S. A. Starks (2001), Intelligent mining in image databases, with applications to satellite imaging and to web search, in Data mining and computational intelligence, edited, pp. 309-336, Springer.
Hsu, P.-C., C.-C. Lin, S.-J. Huang, and C.-R. Ho (2016), Effects of cold eddy on Kuroshio meander and its surface properties, east of Taiwan, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 9(11), 5055-5063.
Huang, C.-Y., H.-C. Ho, and T.-H. Lin (2018), Improving the image fusion procedure for high-spatiotemporal aerosol optical depth retrieval: a case study of urban area in Taiwan, 1-15, 15 pp., SPIE.
Jan, S., C.-C. Chen, Y.-L. Tsai, Y. J. Yang, J. Wang, C.-S. Chern, G. Gawarkiewicz, R.-C. Lien, L. Centurioni, and J.-Y. Kuo (2011), Mean structure and variability of the cold dome northeast of Taiwan, Oceanography, 24(4), 100-109.
Jan, S., C. S. Chern, J. Wang, and S. Y. Chao (2004), The anomalous amplification of M2 tide in the Taiwan Strait, Geophysical Research Letters, 31(7).
Jan, S., J. Wang, C.-S. Chern, and S.-Y. Chao (2002), Seasonal variation of the circulation in the Taiwan Strait, Journal of Marine Systems, 35(3-4), 249-268.
Jiang, L., and M. Wang (2016), Diurnal currents in the Bohai Sea derived from the Korean geostationary ocean color imager, IEEE Transactions on Geoscience and Remote Sensing, 55(3), 1437-1450.
JMA (2015), Himawari-8/9 Himawari Standard Data User's Guide, 1.2 ed., Japan Meteorological Agency, 1-3-4 Otemachi, Chiyoda-ku, Tokyo, 100-8122 Japan.
KOSC (2015), GDPS Ver. 1.4 User’s Manual, edited by K. O. S. Center, Korea Institute Of Ocean Science & Technology.
Kuglin, C., and D. Hines (1975), The phase correlation image alignment method. InProceedings of the IEEE International Conference on Cybernetics andSociety, edited, Piscataway, New Jersey: IEEE Press.
Lewis, J. P. (1995), Fast template matching, paper presented at Vision interface.
Morimoto, A., S. Kojima, S. Jan, and D. Takahashi (2009), Movement of the Kuroshio axis to the northeast shelf of Taiwan during typhoon events, Estuarine, Coastal and Shelf Science, 82(3), 547-552.
Park, K.-A., M.-S. Lee, J.-E. Park, D. Ullman, P. C. Cornillon, and Y.-J. Park (2018), Surface currents from hourly variations of suspended particulate matter from Geostationary Ocean Color Imager data, International journal of remote sensing, 39(6), 1929-1949.
Ryu, J.-H., H.-J. Han, S. Cho, Y.-J. Park, and Y.-H. Ahn (2012), Overview of geostationary ocean color imager (GOCI) and GOCI data processing system (GDPS), Ocean Science Journal, 47(3), 223-233.
Schiek, C. G., R. Araiza, J. M. Hurtado, A. A. Velasco, V. Kreinovich, and V. Sinyansky (2007), Images with uncertainty: efficient algorithms for shift, rotation, scaling, and registration, and their applications to geosciences, in Soft Computing in Image Processing, edited, pp. 35-64, Springer.
Sun, H., Q. Song, R. Shao, and T. Schlicke (2016), Estimation of sea surface currents based on ocean colour remote-sensing image analysis, International journal of remote sensing, 37(21), 5105-5121.
Takita, K., M. A. Muquit, T. Aoki, and T. Higuchi (2004), A sub-pixel correspondence search technique for computer vision applications, IEICE transactions on fundamentals of electronics, communications and computer sciences, 87(8), 1913-1923.
Tang, T., Y. Hsueh, Y. Yang, and J. Ma (1999), Continental slope flow northeast of Taiwan, Journal of Physical Oceanography, 29(6), 1353-1362.
Tian, Q., and M. N. Huhns (1986), Algorithms for subpixel registration, Computer Vision, Graphics, and Image Processing, 35(2), 220-233.
Tsai, Y., C. S. Chern, and J. Wang (2008), Typhoon induced upper ocean cooling off northeastern Taiwan, Geophysical Research Letters, 35(14).
Warren, M., G. D. Quartly, J. Shutler, P. I. Miller, and Y. Yoshikawa (2016), Estimation of ocean surface currents from maximum cross correlation applied to GOCI geostationary satellite remote sensing data over the Tsushima (Korea) Straits, Journal of Geophysical Research: Oceans, 121(9), 6993-7009.
Wu, C.-R., Y.-L. Wang, Y.-F. Lin, and S.-Y. Chao (2017), Intrusion of the Kuroshio into the South and East China Seas, Scientific reports, 7(1), 7895.
Wu, C. R., Y. C. Hsin, T. L. Chiang, Y. F. Lin, and I. F. Tsui (2014), Seasonal and interannual changes of the Kuroshio intrusion onto the East China Sea Shelf, Journal of Geophysical Research: Oceans, 119(8), 5039-5051.
Yang, H., J. K. Choi, Y. J. Park, H. J. Han, and J. H. Ryu (2014), Application of the Geostationary Ocean Color Imager (GOCI) to estimates of ocean surface currents, Journal of Geophysical Research: Oceans, 119(6), 3988-4000.
Yin, W., and D. Huang (2019), Short‐Term Variations in the Surface Upwelling off Northeastern Taiwan Observed via Satellite Data, Journal of Geophysical Research: Oceans.
Zheng, Z. W., Q. Zheng, C. Y. Lee, and G. Gopalakrishnan (2014), Transient modulation of Kuroshio upper layer flow by directly impinging typhoon Morakot in east of Taiwan in 2009, Journal of Geophysical Research: Oceans, 119(7), 4462-4473.
中央氣象局 (2020), 颱風百問, edited, 交通部中央氣象局, 台北.
林勝豐, 楊穎堅, and 唐存勇 (2005), 北海岸沿海潮流特性分析, in 第27屆海洋工程研討會, edited, 國立中興大學，台中市.
詹森, et al. (2018), 臺灣區域海洋學（二版）, 2 ed., 524 pp., 國立台灣大學出版中心, 台北市.
盧鴻復, 吳朝榮, and 李忠潘 (2007), 台灣東北海域湧升流之時空變化, in 第29屆海洋工程研討會, edited, 國立成功大學，台南.
鍾曉緯 (2016), 應用遙感探測技術研究海岸帶之物質傳輸與颱風影響, 188 pp, National Cheng Kung University, Tainan, Taiwan.
蘇志清, and 錢清瑛 (1988), 台灣暖流起源的研究, Journal of Shandong college of oceanology, 18, doi:10.16441/j.cnki.hdxb.1988.01.00.