碩士 / 國立交通大學 / 土木工程系所 / 97 / This paper investigates meteo-tsunami around Taiwan through FFT, Wavelet and EEMD methods based on collected tide data during Jan, 2008 to July, 2009 at 12 tide stations. The temporal and spatial distributions, and the dominant periods of meteo-tsunami around Taiwan was discussed and related to harbor resonance. Meteo-tsunami more occasionally happens in the period of from January to March and at the north waters of Taiwan than the other months and waters due to northeastern monsoons. The maximum amplitude of meteo-tsunami can reach 1.0-1.5 m, whose relative amplitude to mean tidal range is about 0.4-0.6 m. Meteo-tsunami with periods less than 10 minute was newly found together with possibly existing components, which were identified by the previous researchers, with periods ranged from 10-60 minute. Most dominant periods of meteo-tsunami are off from the modes of harbor resonance so that meteo-tsunamis are not amplified in the harbors and are less than 1m. The relationship between pressure variation and meteo-tsunami was confirmed from data at high sampling rate. The characteristics of meteo-tsunami can be clarified by taking root mean square on data at a mean of about 30-40 minute. An interesting speculation is that l:arge jump of the gust during monsoon is a possible factor generating meteo-tsunami.
| Identifer | oai:union.ndltd.org:TW/097NCTU5015058 |
| Creators | Kuo, Li-Hao, 郭力豪 |
| Contributors | Chang, Hsien-Kuo, 張憲國 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 56 |
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