다중주파수 시스템을 이용한 감성돔의 측면 음향 산란강도

Title
다중주파수 시스템을 이용한 감성돔의 측면 음향 산란강도
Alternative Title
Side aspect target strength of black sea bream (Acanthopagrus schlegeli) using multi-frequency system
Author(s)
조성호; 강돈혁; 나정열; 명정구; 김종만
KIOST Author(s)
Kang, Don Hyug(강돈혁)Myoung, Jung Goo(명정구)
Publication Year
2006-06-26
Abstract
The side-aspect acoustic target strengths (TS) of 11 black sea bream (Acanthopagurus schlegeli) were measured using a split-beam echosounder with 120, 200, and 420 kHz; total length ranged from 12.4 to 23.7 cm, and wet weight from 27.5 to 229.8 g. For the precise TS measurement with side aspect angle, we used anesthetized and tethered specimens of known size while being rotated through 360° by means of a carousel structure. The side aspect TS of the fish were conducted by rotating the fish in the horizontal plane at 5° interval and measured at each aspect angle for 30-60 s with ping interval of 0.2 second. As a result, linear functions were fitted with mean fish length using all aspect side TS data, based on the sinusoidal function. For comparison, calculations using the Kirchhoff ray mode (KRM) model based on swimbladder and body morphology were compared with the measured TS. These results can be used to understand the influence of side aspect angle on TS of Acanthopagurus schlegeli and thus improve the accuracy of biomass estimates from side aspect volume scattering strength data that were obtained from various fisheries sonar systems.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/30950
Bibliographic Citation
The 9th Western Pacific Acoustic Conference, pp.1 - 8, 2006
Publisher
The Acoustical Society of Korea
Type
Conference
Language
English
Publisher
The Acoustical Society of Korea
Related Researcher
Research Interests

Fish ecology,Fish taxonomy,Fish stock enhancement,어류생태,어류분류,어류자원증식

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