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- 2023.04.05
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- 2016.02
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서지정보
ㆍ발행기관 : 한국수산해양기술학회(구 한국어업기술학회)
ㆍ수록지정보 : 수산해양기술연구 / 52권 / 1호
ㆍ저자명 : 윤은아, 이경훈, 황강석, 이형빈, 한인우, 황두진
영어 초록
Changes in target strength (TS) values of sandfish when sandfish was alive and dead were investigated using ex-situ at120 kHz. TS values measured by tilt angles with 50+50 degrees showed ranges from 71.0 to 53.3 dB for live sandfish, 63.1~46.3 dB for thawed sandfish, and 70.0~50.4 dB after 24 hours from thawed, respectively. It was shown that while TS values were similar between the case of live and the case of after 24 hours from thawed, mean TS values were higher by approximately 5 dB in the case of immediate thawed sandfish. It was also seen that TS values were similar between the case of thawed sandfish and the case of after 21 hours from live. The results showed that TS values of live sandfish were different from those of frozen sandfish. It implies that when estimating TS of frozen fish, the influx of bubbles and changes of body should be considered.
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