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漁具形状へのカテナリー理論適用についての一考察
https://fra.repo.nii.ac.jp/records/2011879
https://fra.repo.nii.ac.jp/records/2011879b6ebc094-c6e8-4cbf-953c-50a43c683a8d
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
fishu_k_56_311.pdf (2.2 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2024-10-11 | |||||
| タイトル | ||||||
| タイトル | 漁具形状へのカテナリー理論適用についての一考察 | |||||
| 言語 | ja | |||||
| タイトル | ||||||
| タイトル | Application of catenary to fishing gear dynamics | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | catenary; shape of the main line of a longline; shape of the warp of a trawl; hyperbolic function; fishing gear dynamics | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| アクセス権 | ||||||
| アクセス権 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| 著者 |
井上, 悟
× 井上, 悟 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | In a longline fishery, it is important to decide the water depth at which level the hooks should be set according to the type of fish to be caught. This subject is equal to determining the underwater shape of the main line. The shape of the main line can be considered as a catenary curve. However, as the equation of the catenary curve involves a hyperbolic function previously it has been difficult to calculate the shape. Yoshihara transformed the catenary into some other equations and using them and a certain table he obtained the shape of the main line that is the water depth of the main line. After that, studies about the depth of the main line of longlines adopted Yoshihara' s equations and tables. However, the calculation using Yoshihara' s equation is complicated and requires the use of a special diagram in the calculation. This method lacks flexibility in its application and it is difficult to obtain the water depth of the longline under any given conditions. Present scientific electronic calculators are commonly equipped with a hyperbolic function. Consequently, I devised a catenary calculation using a scientific electronic calculator and showed that it is possible to readily calculate the water depth of the main line under any given conditions. For the application to the main line of the longline, I show a flow diagram (algorithm) and provide a practical example of the computation. I also show the application of catenary to the warp of a trawl. Catenary is very usable in the fishing gear dynamics. I hope this paper is able to contribute to the popularization of the use of catenary in the training of the fishing gear dynamics. | |||||
| 言語 | en | |||||
| 書誌情報 |
ja : 水産大学校研究報告 en : Journal of National Fisheries University 巻 56, 号 4, p. 311-315, ページ数 5, 発行日 2008-03 |
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| 出版者 | ||||||
| 出版者 | 水産大学校 | |||||
| 言語 | ja | |||||
| 出版者 | ||||||
| 出版者 | National Fisheries University | |||||
| 言語 | en | |||||
| ISSN | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 0370-9361 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00124678 | |||||
| 情報源 | ||||||
| 識別子タイプ | Local | |||||
| 関連識別子 | fishu_k_56_311 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://agriknowledge.affrc.go.jp/RN/2010761141 | |||||
| 言語 | en | |||||
| 関連名称 | agriknowledge | |||||
