碩士 / 國立成功大學 / 水利及海洋工程學系碩博士班 / 96 / The impact of air-sea interaction on the global climate change, so far, is still a research subject. Among the atmospheric-Ocean processes, the wind and wave fields are an important role. It is about 67% typhoon cases occurred in the Pacific Ocean passing through Gagua Ridge Water, where in around 5000 meters depth. Thus the Central weather Bureau deployed a data buoy to study the characteristic of wind and wave over the Gagua Ridge water for the purpose of preparing for the typhoon warning.
This paper is to study the relationship between wind and wave fields
to promote the level of forecasting accuracy from the data buoy located in the Gagua Ridge Water from August to November, 2006. Firstly, the wind stress is decreasing following the wind speed under the wind speed is less than 4 m/s. Meanwhile, for wind speed is greater than 4 m/s, the wind stress is increasing following the wind speed. However, the wind stress maintains an approximation even though the wind speed is increasing during the typhoon Shanshan Period. The possible reason is the vertical wind profile is deformed by the effect of the wave near the sea surface.
Secondly, the probability of the wind wave and swell components based on the fetch area and wave age methods is calculated. The results show that the portion between the wind wave and swell is major influenced by the weather system. The wind wave is dominant in the apparent weather system. Conversely, the swell phenomena are dominant for the weather system less visible.
Thirdly, the wind speed and wave height is high correlated with the coefficient of 0.94 during the period typhoon Shanshan. The low correlation coefficient of 0.23 is appeared in the weak northerly monsoon. The results are also shown that when the weather system is a systematic changing in wind direction, wind waves are dominant and more high waves and with good correlation with wind speed. Conversely, when the weather system less visible than the chaos in the wind direction, swell components are dominant and wave height is lower and with poor correlation with the wind speed.
| Identifer | oai:union.ndltd.org:TW/096NCKU5083033 |
| Date | January 2008 |
| Creators | Hui-lan Hsu, 許蕙蘭 |
| Contributors | Chia-Chuen Kao, Beng-Chun Li, 高家俊, 李汴軍 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 67 |
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