碩士 / 中央警察大學 / 水上警察研究所 / 107 / The Taiwan Strait links the East China Sea and the South China Sea. It is an important passage for exchange of materials between these two marginal seas. Due to its geographical location, the in situ observational data of the flow field in the central Taiwan Strait are quite scarce, especially during the winter months. In order to get a better understanding of the flow field in the central Taiwan Strait, this study employs the data observed by the ADCP of the Miaoli Cutter in winter and the concurrent wind speed data from the Central Weather Bureau to examine the features of the flow field in winter. Both the historical literature and the data obtained in this study indicate that the semidiurnal tide is quite strong in this region. Therefore we apply the TPXO barotropic tidal model to remove the tidal current, compare with the subtidal current obtained by harmonic analysis, and then conduct the wavelet transform to explore the correlation between local wind and subtidal current. On the west side of the Taiwan Strait, the presence of China Coastal Current is confirmed in the vicinity of Wuqiu. We also delineate the evolution of China Coastal Current across the Taiwan Strait using satellite-derived sea-surface-temperature images. Overall, the results obtained in this study are very close to those of previous researchers. We believe that if we can collect more accurate ocean current data in the future, it will definitely improve the efficiency of the Coast Guard in carrying out the search and rescue missions. Moreover, it will be beneficial to marine environmental conservation, oil pollution response, and prediction of marine waste drift.
keyword：flow field、Coast Guard、Miaoli Cutter、ADCP
| Identifer | oai:union.ndltd.org:TW/107CPU00670006 |
| Date | January 2019 |
| Creators | CHEN,KUAN-JEN, 陳冠任 |
| Contributors | CHEN, HSIEN-WEN, 陳先文 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 60 |
Page generated in 0.0099 seconds