| Presentation | 2012-08-28 Target strength pattern measurement of juvenile chum salmon (Oncorhynchus keta) in a tank by the controlled method Kouichi Sawada, Tomohiko Matsuura, Hideaki Aono, Akihiko Hashiba, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Target strengths of juvenile chum salmons (Oncorhynchus keta, standard body length=40.2-51.3 mm) from side aspect (n=12) and ventral aspect (n=3) at 70 kHz were measured as a function of an incident angle by the controlled method in a fresh water tank. Measurements were compared with predictions based on the swimbladder morphology. Swimbladder shapes were modeled as prolate spheroids with the major and minor radii which were obtained from soft X-ray images taken from the side view. Both measurements and predictions agreed well. Acoustic scattering properties of juvenile salmon can be predicted by the vacant prolate-spheroid mode series model at least within the L/λ(λ : wavelength) range of 2.0-2.5. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | juvenile salmon / swimbladder / Oncorhynchus keta / target strength pattern / prolate-spheroid modal series model |
| Paper # | US2012-55 |
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| Conference Information | |
| Committee | US |
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| Conference Date | 2012/8/20(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Chair | |
| Vice Chair | |
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| Paper Information | |
| Registration To | Ultrasonics (US) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Target strength pattern measurement of juvenile chum salmon (Oncorhynchus keta) in a tank by the controlled method |
| Sub Title (in English) | |
| Keyword(1) | juvenile salmon |
| Keyword(2) | swimbladder |
| Keyword(3) | Oncorhynchus keta |
| Keyword(4) | target strength pattern |
| Keyword(5) | prolate-spheroid modal series model |
| 1st Author's Name | Kouichi Sawada |
| 1st Author's Affiliation | National Research Institute of Fisheries Engineering, Fisheries Research Agency() |
| 2nd Author's Name | Tomohiko Matsuura |
| 2nd Author's Affiliation | National Research Institute of Fisheries Engineering, Fisheries Research Agency |
| 3rd Author's Name | Hideaki Aono |
| 3rd Author's Affiliation | Tohoku National Research Institute, Fisheries Research Agency |
| 4th Author's Name | Akihiko Hashiba |
| 4th Author's Affiliation | Sanriku Yamada Fisheries Cooperatives |
| Date | 2012-08-28 |
| Paper # | US2012-55 |
| Volume (vol) | vol.112 |
| Number (no) | 186 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |