碩士 / 國立臺灣海洋大學 / 海洋環境資訊學系 / 101 / This study investigated the rapid growth waves near the Kueisan Island, using data obtained from the Tourism Bureau’s Kueisan buoy station. In this study, the rapid growth waves were defined as the waves with significant wave height not only increased more than two times and also grew to higher than 1.5 m in the time span of 6 hours. Huang （2008） has studied the rapid growth waves in this area based on the bouy data measured between 2002 and 2005. From these data, she identified only 24 rapid growth wave events. This paper analyzed wave data measured between 2002 and 2012 and found 249 events.
The analysis based on the 249 wave events found that 34％ of the rapid growth waves occurred in the winter, followed by 26％ in the fall, 22％ in the spring and 18％ in the summer. The results showed that the wind was mostly from the N and NE direction before and after the growth event. Moreover when the rapid growth event started the wind was even more concentrated in the N and NE than before the rapid growth. As to the changes of wave period, it was found that the wave period decreased at first and then increased with the growth of wave height. On average, the wave period reached it peak about 6 hours into the rapid growth.
The analysis of the weather systems associated with the wave events found that in the fall and winter seasons these events were caused by continental high pressure, while in the spring they were caused by the arrival of a weather front followed by a continental high. In the summer, the rapid growth wave events were caused by typhoon or tropical depression.
This study also compared the events found in Kueisan Isand with those from Hualien and Suao, all three locations are on the east coast. Since the sea at Kueisan Island is somewhat sheltered by the main Taiwan Island, the mean final maxima wave height in the growth event at this location is smaller than those at the other locations, only 2.24 m. The average increase in wave height in the events at Kueisan was also smaller than those found at the other two locations, only 1.47 m.
| Identifer | oai:union.ndltd.org:TW/101NTOU5276033 |
| Date | January 2013 |
| Creators | Chen-Yu Ou, 歐真妤 |
| Contributors | Cheng-Han Tsai, Jen-Chih Tsai, 蔡政翰, 蔡仁智 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 85 |
Page generated in 0.0015 seconds