인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
피인용 0
초록·키워드
The purpose of this study is to identify the shape of the net spread out underwater and bycatch reduction performance for target fish species when applying the four types of bycatch reduction devices of the bycatch management regulations to shrimp beam trawl. To this end, shrimp beam trawl was modeled as a mass-spring, and the size of the target fish species was investigated and compared with the size of the escape hole. As a result, the shape and size of the escape hole spread out of each bycatch reduction device was changed from that described in the regulations, and some had a reduced codend volume. In addition, the escape holes of the inclined-upward escape device, inclined-downward escape device, and wall-type-downward escape device were larger in height and width than the body height and width of the fish mainly caught in the shrimp beam trawl, while the escape hole of the conical-downward escape device was relatively smaller than the body width or height of the target fish. Therefore, it is thought that a study analyzing the underwater spreading out shape of bycatch reduction devices through numerical modeling can be an effective means for examining the design validity in advance.
본문·목차
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