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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국수산해양기술학회(구한국어업기술학회) 수산해양기술연구 수산해양기술연구 제44권 제2호
발행연도
2008.1
수록면
99 - 111 (13page)

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초록· 키워드

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The purpose of this study is to develop the jellyfish separator system(JSS) for reducing fishery damage by the increase of jellyfish in the sea area of Korea in summer. First of all, to find the optimum structure of a JSS, six types of JSS in trawl fishery were designed and manufactured, the underwater shape of JSS and the separating process by JSS were observed in the circulating water channel(CWC). And the field experiments were carried out in July and September 2004 in the southern sea of Korea. For the moving path of the jellyfish model in the CWC, in case that the model was larger than the mesh size of the separator net, it was guided toward the lower part of the separator net by the guiding net and discharged through the outlet. In case that the model was smaller than the mesh size of the separator net, some models which passed through the upper part of the guiding net were smaller than the mesh size of the guiding net and discharged through the outlet and most of the model which passed through the lower part of the guiding net moved to the cod-end passing through the separator net. According to the field experiment result, the optimum tilt angle of separator net was inferred 20° that the discharge rate of jellyfish was higher than the other tilt angle of separator net and the optimum structure of JSS was inferred GS type(consists of guiding net and separator net) that the discharge rate of jellyfish was higher than S type(consists of separator net). It was demanded to carry out more study for the countermeasure to reduce loss of fish.

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