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トロール網の網口高さに関する考察
http://hdl.handle.net/10069/30776
http://hdl.handle.net/10069/307766493d851-8581-43f9-9403-2b6c38d7a188
名前 / ファイル | ライセンス | アクション |
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suisan39_041.pdf (4.6 MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2013-02-22 | |||||
タイトル | ||||||
タイトル | トロール網の網口高さに関する考察 | |||||
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 | |||||
著者 |
秋重, 祐章
× 秋重, 祐章× 矢田, 殖朗× 高木, 保昌× 合田, 政次× 平松, 次夫 |
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著者別名 | ||||||
姓名 | Akishige, Yusho | |||||
著者別名 | ||||||
姓名 | Yada, Shigeaki | |||||
著者別名 | ||||||
姓名 | Takaki, Yasuaki | |||||
著者別名 | ||||||
姓名 | Goda, Masaji | |||||
著者別名 | ||||||
姓名 | Hiramatsu, Tsugio | |||||
その他のタイトル | ||||||
その他のタイトル | The Consideration on the Height of the Net-Mouth in the Trawl-Net | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | On the shrimp fishery in the Yellow Sea the height of the net-mouth of the trawl-net is regarded as important because it has a direct infulence on the catch. The authors prepared a model-net one-twentieth as large as an actual trawl and made experiments with it in a water tank, comparing the results with the obtained from the use of the actual trawl-net in the fishing ground. The height of the net-mouth in the fishing-ground was about 21-27% less than that in the experimental tank at a trawling speed of 3 knots. This is considered to be due to the increase of sinking power owing to the use of seam-line; too great intervals between the tips of the side wings owing to the use of otter-boards; and the increase of resistance owing to the friction of the ground and the sea bottom. | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | 水槽実験における模型網の場合,曳網速力3.0ノットで網口の高さ8.2mであった。漁場におけるトロール網では同速力で6.0~6.5mを得た。これは模型網に比べて21~27%の網口高さの低下をしめすものである。このことは力網ワイヤーの使用による沈降力の増加,オッターボードの使用による袖先間隔の開きすぎ,グランドと海底との摩擦による抵抗の増加によるものと思われる。中層曳実験では網口の高さは曳網速力3.0ノットで模型網の場合9.4m,操業中のトロール網では8.9mで両者の間にはほとんど差異は認められなかった。 | |||||
書誌情報 |
長崎大学水産学部研究報告 en : Bulletin of the Faculty of Fisheries, Nagasaki University 巻 39, p. 41-46, 発行日 1975-08 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 05471427 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00178473 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
論文ID(NAID) | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | NAID | |||||
関連識別子 | 40002770729 | |||||
出版者 | ||||||
出版者 | 長崎大学水産学部 | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 長崎大学水産学部研究報告, v.39, pp.41-46; 1975 |