碩士 / 國立中山大學 / 海洋環境及工程學系研究所 / 103 / Due to decades overfishing and pollution of marine environment, the originally abundant fish stocks in the nearshore area has diminished tremendously. According to the report of Food and Agriculture Organization (FAO), the global fish production will be insufficient to supply for human being in the near future. Therefore, how to solve this critical scenario has become an important issue. And if considering the possibility of restoring marine ecological system and its sustainable development, then the installation of set-net facilities in the nearshore may become a good alternative solution. For example, black tuna species farmed in Japan in recent years were artificially bred with set net catches. In addition, set net gear is installed close to shore and fishers normally operate a small vessel with an outboard engine. Instead of an active fishing gear, set net fishing is actually a passive gear, which makes fuel cost only account for 2 ~ 5% of overall cost. Compared with other types of fisheries that use active gear to capture and entrap targeted species, set net fishing is more economical and fuel efficient. To improve the efficiency of fishing, it is necessary to consider the securityof fishing gear in the sea. The objective of this study is to establish a numerical model to simulate the dynamic behavior of the set-net system located at Sansiantai, Taitung County. The numerical model is based on the small body concept and lumpedmass method to calculate the force on each component. The maximum mooring line tension at anchor as well as the minimum weight of anchors will also be examined, and some valuable technical guidelines can be offered to the set-net fishing.
| Identifer | oai:union.ndltd.org:TW/103NSYS5282005 |
| Date | January 2014 |
| Creators | Chih-yung Yeh, 葉智湧 |
| Contributors | Chai-Cheng Huang, 黃材成 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 86 |
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