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中層曳網の研究I : 網中の流速分布と網成りについて
http://hdl.handle.net/10232/13720
http://hdl.handle.net/10232/13720c140587e-d167-4b92-a968-33dfa78a59c2
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
AN00040498_v23_p45-55.pdf (4.4 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2015-06-17 | |||||
| タイトル | ||||||
| タイトル | 中層曳網の研究I : 網中の流速分布と網成りについて | |||||
| タイトル言語 | ja | |||||
| タイトル | ||||||
| タイトル | Studies on the Midwater Trawl I : Distribution of flow-speed inside the Net and Performance of the Net-shape | |||||
| タイトル言語 | en | |||||
| 著者 |
今井, 健彦
× 今井, 健彦 |
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| 言語 | ||||||
| 言語 | jpn | |||||
| 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 | |||||
| 要約 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | This paper described about the basic experiment of on the continuous midwater trawl which was carried out in the experimental circular tank with two types of model net (the one rigged with cone and the other without cone), and with two kinds of webbing (thin twined one and thick twined one); measurement being carried out on the four stages of flow-speed (approximately 1.5, 2, 2.5, 3, kn), using Kanomax flow-meter (constant temperature type, hot film flow-meter), and flow-line-shaped meter-rod. The results obtained are as follows: 1. Even when the trawl was rigged with cone and suction-hose little deformation in trawls was noted. Decreasing percentage in the areas of net moth, horizontal section, and vertical section was observed to be only a little. 2. Concerning the flow-speed, it was generally lower inside the net, than it was outside the net, but an acceleration in flow-speed was recognized in some case. 3．In case of thin twined webbing, net-performance was lower than in the thick one, especially when the flow-speed was low, because there was less extension than in the latter case. Hence the necessity of choosing the twine-size and mesh-size most appropriate to the towing-speed. | |||||
| 内容記述言語 | en | |||||
| 収録雑誌名 |
ja : 鹿児島大学水産学部紀要 en : Memoirs of Faculty of Fisheries Kagoshima University 巻 23, p. 45-55, 発行日 1974-12-25 |
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| 作成日 | ||||||
| 日付 | 1974-12-25 | |||||
| 日付タイプ | Issued | |||||
| ISSN | ||||||
| 収録物識別子タイプ | PISSN | |||||
| ISSN | 0453087X | |||||
| NII書誌ID（雑誌） | ||||||
| 収録物識別子タイプ | NCID | |||||
| NC ID | AN00040498 | |||||
| 出版タイプ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| NDC | ||||||
| 主題Scheme | NDC | |||||
| 主題 | 660 | |||||
| 公開者・出版者 | ||||||
| 出版者 | 鹿児島大学 | |||||
| 出版者言語 | ja | |||||
| 公開者・出版者 | ||||||
| 出版者 | Kagoshima University | |||||
| 出版者言語 | en | |||||
