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中層曳網の研究II : 縮結と網成り及び曳網抵抗について
http://hdl.handle.net/10232/13678
http://hdl.handle.net/10232/13678980cbfd8-e8dd-41d7-87d9-2534fc60eafe
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
AN00040498_v25-1_p117-124.pdf (550.7 kB)
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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II : 縮結と網成り及び曳網抵抗について | |||||
| タイトル言語 | ja | |||||
| タイトル | ||||||
| タイトル | Studies on the Midwater Trawl II : Model experiments on the Hanging-coefficent, Netshape and Towing-net-resistance | |||||
| タイトル言語 | en | |||||
| 著者 |
今井, 健彦
× 今井, 健彦× 平川, 栄一× 田畑, 静夫 |
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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 | In this paper the authors deal with the model experiments of 6 kinds of four-panelled midwater trawl-nets which were same in constructions, but different in hanging-coefficent. The measurements on the net-shape and towing-net-resistance were carried out in the circuler tank, with about 51 cm/sec of flow-speed. The results obtained are as follows: 1. The net-shape was noted to be different in each net, especially in both the A-net (2% of hanging-coefficent) and the B-net (5% of hanging-coefficent), the cod-end was observed to be fairly expanded. 2. The maximum cross-section-area of net-mouth was obtained in the D-net (15% of hanging-coefficent). 3. Concerning the total towing-net-resistance, the minimum value was showed by the C-net (10% of hanging-coefficent), the maximum by A-net (of the largest mesh number) and the value next to maximum was showed by the F-net (30% of hanging-coefficent; the smallest mesh number). Accordingly, we can assume that, the total net-resistance of bag-net is depending more upon net-shape than upon mesh number of the netting, except those of low hanging-coefficent. | |||||
| 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 25, 号 1, p. 117-124, 発行日 1976-12-25 |
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| 作成日 | ||||||
| 日付 | 1976-12-25 | |||||
| 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 | 664 | |||||
| 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 | |||||
