碩士 / 國立臺灣海洋大學 / 環境生物與漁業科學學系 / 95 / Abstract
Satellite-derived sea surface temperature (SST) images revealed a significant seasonal SST variability under the interaction between the Mainland China Coast Current and Kuroshio in the northeastern waters of Taiwan. Furthermore, weekly satellite-derived SST images taken from April to November every year (1996-2005) as well as the hydrographical data all substantiate the view that an upwelling phenomenon exist clearly in the region of 25.0~25.5˚N, 122~122.5˚E. The outcome of this study revealed a significant high correlation (r = 0.94; P<0.05) between the hydrographical data and satellite remote sensing SST images, indicating the validity of the weekly mean SST images as basis for deriving the size of the upwelling area.
The Mainland China Coast Current is driven by the northeast winter monsoon extending southeastward to the south shelf of East China Sea and reaches the upwelling zone in winter. During the winter season, the SST of this study area is usually lower than 22°C, thus the upwelling phenomenon is difficult to observe from the satellite images. From April to May, the SST in the upwelling zone is about 25°C and cooler than the surrounding waters, revealing significant cold patch with the largest weekly mean upwelling area of 12000 km2. However, when the SST is higher than 28°C after June, the upwelling area decreases in size to 500 km2 due to the eastward extension of waters coming from the Taiwan Strait Warm Water that covers the upwelling zone in summer. In fall, the upwelling area increases to 10000 km2, when the mean SST is about 26°C.
| Identifer | oai:union.ndltd.org:TW/095NTOU5451001 |
| Date | January 2007 |
| Creators | Hui - Chuan Lien, 連慧娟 |
| Contributors | Ming-An Lee, 李明安 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 64 |
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