碩士 / 國立臺灣海洋大學 / 海洋環境資訊學系 / 101 / According to historical data, we still cannot neglect the effects of special topography on the flow fields and even on eddies in Nanwan Bay, although the formation of eddies are highly related to tidal flow. Two time-series CTD casts in the upstream and downstream of the seamount during cruise 1035 from R/V Ocean Researcher III are analyzed. The analytical results show that the temperature fluctuations in the upstream of the seamount are obviously rarer than that in the downstream. Therefore, it is reasonable implication is that the temperature fluctuations occur in the thermocline while the strong tidal flow crosses over the seamount, leading to the downstream mixing inside the Bay. For clarifying the deduction, we compare the results between temperature fluctuations with and without seamount in the topography of a three-dimensional numerical model, and find that the stratification of water column seems to be enhanced while the model run is without seamount. Hence, if we increase the stratification of water column of the model to verify, the results show that the seamount, indeed, can affect the temperature fluctuations and water mixing, even to affect the formation of anticyclonic eddies in the Bay.
Keywords: Nanwan Bay, Seamount, Eddies, Stratification
| Identifer | oai:union.ndltd.org:TW/101NTOU5276015 |
| Date | January 2013 |
| Creators | 潘文凡 |
| Contributors | Hung-Jen Lee, 李宏仁 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 51 |
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