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漁業練習船南星丸が放射する水中音
http://hdl.handle.net/10232/736
http://hdl.handle.net/10232/7361bacc805-9840-4922-993a-5c7d698840fb
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
KJ00004372962.pdf (947.7 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2015-02-06 | |||||
| タイトル | ||||||
| タイトル | 漁業練習船南星丸が放射する水中音 | |||||
| タイトル言語 | ja | |||||
| タイトル | ||||||
| タイトル | The Underwater Sound Emitted by Fishing Training Ship Nansei-Maru | |||||
| タイトル言語 | en | |||||
| 著者 |
松野, 保久
× 松野, 保久× 日高, 正康× 東, 政能× 幅野, 明正× 中武, 利郎 |
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| 言語 | ||||||
| 言語 | jpn | |||||
| キーワード | ||||||
| 主題言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | underwater sound | |||||
| キーワード | ||||||
| 主題言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | underwater sound level | |||||
| キーワード | ||||||
| 主題言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | underwater sound spectrum | |||||
| キーワード | ||||||
| 主題言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | fishing training ship | |||||
| 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 | The measurements were carried out for the purpose of grasping the actual condition of underwater sound emitted from the ship, in order to enable a precise evaluation of fish resources using an echo integrator. The results obtained in this study are as follows: 1. When the Nansei-Maru was drifting, the mean value of sound pressure level was 143dB at a vertical distance of just 10m from the ship's bottom. The numerical values with main engine rotation and with the presence or absence of the generator engine showed no significant differences. 2. When the Nansei-Maru was cruising, values of 150dB-153dB were shown at a horizontal distance of 30m from the ship. Fishes were startled by sound pressure levels of 130dB-150dB; the sound pressure level was calculated to be 130dB at a distance of about 380m from the ship and 140dB at a distance of about 120m. It must be borne in mind that escape behavior may be stimulated in schools of fish at these distances. 3. While drifting, many line spectra with higher harmonics were distinguished from the basic frequency of the main engine and the generator engine rotation. 4. While cruising ahead, at a frequency band of 200Hz or less, the continuous spectrum from the propeller blade rotation and the line spectra which arise from the propeller shaft rotation were distinguished. | |||||
| 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 54, p. 57-62, 発行日 2005-12-27 |
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| 作成日 | ||||||
| 日付 | 2005-12-27 | |||||
| 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 | |||||
