The effect of fish bodies on the source level and beam pattern of acoustic transmitters in juvenile Chinook salmon
| Autor: | Zhiqun Daniel Deng, Ricardo W. Walker, Ki Won Jung, Xiaoqin Zang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Chinook wind Fish migration Acoustics and Ultrasonics Point source 010604 marine biology & hydrobiology Acoustics Fishes Source level Acoustic tag 010603 evolutionary biology 01 natural sciences Signal Rivers Arts and Humanities (miscellaneous) Salmon Telemetry Animals Juvenile Environmental science Animal Migration Algorithms Environmental Monitoring |
| Zdroj: | The Journal of the Acoustical Society of America. 145:EL554-EL559 |
| ISSN: | 0001-4966 |
| DOI: | 10.1121/1.5112836 |
| Popis: | The effect of the fish body on the source level and beam pattern of an acoustic fish tag signal was investigated through laboratory experiments and an analytical method. In laboratory experiments, the source level and beam pattern were measured in both a tag-only group and a tag-in-fish group. In the analytical method, both forward and backward scattering were calculated by assuming the acoustic tag was a point source and the swimbladder was an air-filled prolate spheroid. The mean source level of five tested tags decreased by ∼4 dB after implantation in fish bodies, which is important for designing fish migration studies using acoustic telemetry. |
| Databáze: | OpenAIRE |
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