碩士 / 國立中山大學 / 海下科技暨應用海洋物理研究所 / 102 / The weather in Taiwan is influenced by annual monsoon. In summer, typhoons, which develop between Philippines and Guan, come from southeastern Taiwan to northwestward and often cause massive damages. In winter, the northeastern monsoon causes heavy rain fall around the northeastern region of Taiwan. Therefore, to improve the precision on land, the weather station off the northeastern can be crucial. The MACHO (MArine Cable Hosted Observatory) project was conducted off the coast of Toucheng to resolve the limited observation on land, and a hydrophone was deployed to record the ambient noise, which can be used to invert the wind speed and compared with data from Su-ao weather station. The long duration stable wind event was used to compare with the acoustic signals recorded by the hydrophone for correlation, by which characteristic frequency for inversion can be decide. The regression analysis of wind speed and ambient noise help to establish the wind speed inversion formula, which was verified by the in-situ data. The method proposed in this study has achieved the goal of estimating wind speed off the coast by acoustic data, and expands the capability of weather observation.
| Identifer | oai:union.ndltd.org:TW/102NSYS5281003 |
| Date | January 2013 |
| Creators | Ching-jen Chin, 秦敬仁 |
| Contributors | Ruey-Chang Wei, 魏瑞昌 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 69 |
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