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計量魚探機とスキャニングソナーを用いた魚群の定量的三次元画像化
https://fra.repo.nii.ac.jp/records/2011728
https://fra.repo.nii.ac.jp/records/2011728c3352bac-f55e-4f69-96c5-e61473e0a426
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
fishu_k_50_1.pdf (958.4 KB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2024-10-11 | |||||
| タイトル | ||||||
| タイトル | 計量魚探機とスキャニングソナーを用いた魚群の定量的三次元画像化 | |||||
| 言語 | ja | |||||
| タイトル | ||||||
| タイトル | Combined use of quantitative echo-sounder with scanning sonar to visualize semi-quantitative three-dimensional image of fish schools | |||||
| 言語 | en | |||||
| 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 | |||||
| 著者 |
濱野, 明
× 濱野, 明× 中村, 武史 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | An acoustic survey involving the concurrent use of a quantitative echo-sounder and a sector-scanning sonar was conducted in December, 2000, off the Japan sea coast of Yamaguchi Prefecture. To visualize the semi-quantitative image of fish schools, the density information, including its variation, was extracted in range bins from the echogram of the quantitative echo-sounder. A sonar image of the school cross-section perpendicular to the transect was used to construct the three dimensional image of fish schools. The sonar images sampled at 12 sec intervals were digitized and stored in the computer memory as volume information with the x- and y-axes in the athwart and alongship directions, respectively. The z-axis represents depth. The volume of the fish schools is calculated by multiplying the number of voxcels by their size in the x-, y- and z- direction. The standing stock of schools was then semi-quantitatively estimated by multiplying the density of the schools by their volume. The present report describes an acoustic survey method to better assess school shape and offers a method to use the shape information for improved stock estimation. The necessity of geometric approach is pointed out to provide a correction for the location and extent of the non-scanned area in the surveyed water mass. | |||||
| 言語 | en | |||||
| 書誌情報 |
ja : 水産大学校研究報告 en : Journal of National Fisheries University 巻 50, 号 1, p. 1-11, ページ数 11, 発行日 2001-12 |
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| 出版者 | ||||||
| 出版者 | 水産大学校 | |||||
| 言語 | ja | |||||
| 出版者 | ||||||
| 出版者 | National Fisheries University | |||||
| 言語 | en | |||||
| ISSN | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 0370-9361 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00124678 | |||||
| 情報源 | ||||||
| 識別子タイプ | Local | |||||
| 関連識別子 | fishu_k_50_1 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://agriknowledge.affrc.go.jp/RN/2010652400 | |||||
| 言語 | en | |||||
| 関連名称 | agriknowledge | |||||
