碩士 / 國立臺灣海洋大學 / 海洋環境資訊系 / 105 / The primary objective of this study is to use an existing three-dimensional, primitive equation, numerical ocean model, POM, to investigate the typhoon surges around Taiwan. For simplicity, the two-dimensional, vertically average model is considered here. The model was constructed by global bathymetry data, SRTM30_ PLUS, and forced by tides, from the global tidal model, TPXO, and meteorological parameters, respectively.
First, we have established a tidal model around Taiwan. The model was forced by TPXO at the open boundaries. The model result showed a reasonable agreement with observed data. Secondly, a set of model experiments were designed to simulate typhoon surges. To consider the effect of meteorological parameters on typhoon surges, including wind field and pressure distribution, the first model experiment was considered the effect of wind on astronomical tides only. Then, the second one includes the pressure gradient force in the model. Here the typhoon wind field and pressure were obtained by the analytical parametric typhoon model of Jelesnianski (1965).
The result indicates that at the eastern coast of Taiwan, typhoon surges were mostly dominated by pressure gradient force. The wind stress had a more important impact on typhoon surges at the western coast of Taiwan. Besides, both of the effect of the wind stress and the pressure gradient force were in the same degree of order at the region near center of typhoon.
| Identifer | oai:union.ndltd.org:TW/105NTOU5276006 |
| Date | January 2017 |
| Creators | Huang, An-Yi, 黃安億 |
| Contributors | Lo, Yao-Tsai, 羅耀財 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 73 |
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