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釣獲率よりするビンナガ魚群態の算定理論
http://hdl.handle.net/10232/10760
http://hdl.handle.net/10232/107601effe4de-f5a3-4591-b90b-291a0b5420d8
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
無題12.pdf (920.9 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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| 公開日 | 2015-07-01 | |||||
| タイトル | ||||||
| タイトル | 釣獲率よりするビンナガ魚群態の算定理論 | |||||
| タイトル言語 | ja | |||||
| タイトル | ||||||
| タイトル | Theoretical Estimation of Albacore-shoals Dimensions in Accordance with the Characteristic of Fishing-rates | |||||
| タイトル言語 | en | |||||
| 著者 |
黒木, 敏郎
× 黒木, 敏郎 |
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| 言語 | ||||||
| 言語 | eng | |||||
| 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 | |||||
| 要約 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 1. The histogram of the frequency of fishing rates in long-line albacore fishing on the Pacific Ocean (N: 24°-45°, E : 130*-180°) shows some what significant modes. 2. The author interpreted the meaning of this modes by surmising that it may be caused by a long-line encountering with several albacore shoals. And he paid ome efforts to resolve the dimensions of shoals and its distributions under the consideration of the probability in the "Buffon's needle problem ". 3. By assuming that the shape of shoal is ellips (axes 2a, 2b) and the shoals are shifting on the parallel lines (intervals 2h) at the distances 2s, the probability of n-encounterings is given as Eq. (9). 4. In an example of the result of calculations (Jan. 1949, A-region), the values of 2a, 2b, 2s and 2h are obtained as 1.6 km, 1.0 km, 9.8 km and 4.5 km respectively. It is impossible or very difficult to resolve the under-water phenomena with such a large scope as these dimensions by optical or sounding apparatus. After all it is to be the best method to use the idea discrived in this paper. 5. About the theoretical methods to resolve the problems —the number of fish in one shoal (for example, 13000), the speed of shifting in the migration (for example, about 6 km/hr), how to set a long-line to secure good catches— another paper shall be published. | |||||
| 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 5, p. 78-90, 発行日 1956-12-30 |
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| 作成日 | ||||||
| 日付 | 1956-12-30 | |||||
| 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 | |||||
| NIIsubject | ||||||
| 主題言語 | ja | |||||
| 主題Scheme | Other | |||||
| 主題 | 自然科学 | |||||
| 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 | |||||
