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      • KCI등재

        어초의 형태와 어군의 위집에 관한 연구

        손태준,박정식,서두옥 한국수산학회 1977 한국수산과학회지 Vol.10 No.4

        西歸浦 沿岸에 人工魚礁를 設置하여 魚礁의 形態와 魚群의 蝟集에 關한 硏究에서 아래와 같은 結果를 얻었다. 1. 魚礁設置 海域의 15m 水深層에 대한 吹送流는 最高流速이 15.28㎝/sec였고 流向은 WSW가 20.5%였다. 2. 흐름과 波에 의한 圓形垂下型魚礁의 流體抵抗은 約 890㎏이 最大였고, 魚礁에 附着된 멍의 重量은 1,200㎏로서 固定力이 充分하였다. 3. 파라슈트魚礁에 대한 最大抵抗은 106.3㎏로서 멍의 固定力은 充分했으나 비닐캔버스와 展開用 資材가 弱하여 維持되지 못하였다. 4. 濟州島 近海産 重要魚類 53種中 人工魚礁에 蝟集한 魚種은 16種이었고 漁獲組成比는 참돔 23%, 볼락 13%, 보리멸 11%, 우럭볼락 7%, 쥐치 6%이고 潛水 觀察에서 魚礁의 中層部에 많은 稚魚가 蝟集된 것을 確認하였다. This study intended to investigate the shape of the artificial fish reefs settled in the waters of Seogwipo, and the thronging of fish schools into them. The results obtained are summarized as follows: 1. Two types of artifical fish reef, circularized vertical type which is composed of Cryptomeria branches and parachute type, were put off the coast of Seogwipo at 33˚14'05" N Lat.,126˚34'40" E Long. The setting place is located 0. 4 sea-mile away from natural fish reefs, at 25 m in depth. And its sediment is consisted of f. S. and Sh. 2. Maximum velocity of wind drift current was 15.28 ㎝/sec at 15 m depth. The current direction was 20.5% in the WSW. 3. Maximum fluid resistance of the circularized vertical type to current and wind waves showed about 890 ㎏, and the weight of sand bags attached to the fish reef totaling 1,200 ㎏ was enough to sustain fish reef. 4. As maximum fluid resistance of the parachute type to current and wind waves was 106.3 ㎏, the retaining force of sand bags was enough to sustain the fish reef, but vinyl canvas and expansion materials were so poor that the fish reef was lost by the sea current and wind waves. 5. Sixteen species of fish among 53 usually caught in this area were thronged into the artificial fish reef. The fish catches comprized porgy (Pagrosomus major) 23%, black kock fish (Sebastes (Mebarus) inermis) 13%, sand borer (Sillago sihama) 11%, Sebastes (Pteropodus) hubbsi 7%, and file fish (Monacanthus cirrhifer) 6%. According to the submarine observations by divers, it was confirmed that a lot of fish larvae thronged in the middle part of the fish reefs.

      • KCI등재

        멸치 자망의 망목선택성에 관하여

        손태준 한국수산학회 1985 한국수산과학회지 Vol.18 No.6

        충무, 남해, 기장 동지에서 使用하고 있는 멸치刺網漁具에 대한 調査를 근거로 網目이 23.1㎜, 21.6㎜, 20.0㎜인 세 가지 網地로서 成形率이 각각 0.65 및 0.55가 되도록 각 1폭씩, 6폭짜리 試驗漁具를 製作하고, 울산 近海에서 釜山-404號(160◎, 800ps)로서 試驗操業(1983年 7月 28日)한 漁獲結果를 가지고서 Ishida(1962)의 方法으로 網目選擇性을 檢討한 結果는 다음과 같다. 1. 漁獲尾數 161마리 중 90% 이상(148마리)이 頸周部位에서 罹網되었다. 2. 頸周 C_n(㎝) 體長 L(㎝)와의 關係는 L=1.5C_n+4.1로 表示할 수 있고 이때의 相關係數는 0.7로 나타났다. 3. 體長 L(㎝)과 適正網目 M(㎝)와의 關係는 L=4.8M으로 나타낼 수 있다. It is an important work to determine the mesh size of gill net for efficient catch. For investigating the suitable mesh size, the gill net for anchovy, Engraulis japonica was made and operated in the bay of Ulsan in July. 1983. The gill net for anchovy was composed of six different mesh size, 23.1㎜ (H=0.65), 21.6㎜ (H=0.65), 20.0㎜ (H=0.65), 23.1㎜ (H=0.55), 21.6㎜ (H=0.55) and 20.0㎜(H=0.55). The parts of body caught by the gill net was examined, and the selectivity curves (for reference Ishida's method) with respect to the each mesh size were estimated using the data obtained through the operation of research gill net. The main results of this study are as follows: 1. The number of anchovy whose neck was in net was 148, more than 90% of all, 161 2. The coefficient of relationship between the circumference of neck and the fork length were 0.70. 3. Fork length that the relative fishing efficiency of 23.1㎜ mesh size (H=0.55) was maximum value was about 11.1 centimeter.

      • KCI등재

        제주도근해 예승어구의 유체저항과 줄의 굵기에 관하여

        손태준 한국어업기술학회 1979 수산해양기술연구 Vol.15 No.2

        Skipjack, Katsuowonus vagans, yellow tail Seriola quinqueradiata and Scomberomorus sinensis are largely caught by trolling gear in the coastal waters of Jeju Island. The author determined the hydrodynamic resistance of the trolling gears uscd in the waters, estimated the pulling force of the fish species above mentioned by use of body weight, and then calculated the minimum diameter of the lines of trolling gears. The results obtained are as follows: 1. The hydrodynamic resistance of the trolling gears present linear relationship in accordance with the towing speed of the gears. 2. The diameter of seizing leader, leader gut and branch line used in the waters might be durable to catch skipjack and yellow tail, whereas the diameter of those must be weak in intensity for Scomberomorus zinensis.

      • KCI등재

        어초의 형태와 어군의 위집에 관한 연구

        손태준,박정식,서두옥,SHON Tae Joon,BAE Jeong Sig,SOH Doo Ok 한국수산과학회 1977 한국수산과학회지 Vol.10 No.3

        서귀포 연안에 인공어초를 설치하여 어군의 형태와 어군의 위집에 관한 연구에서 아래와 같은 결과를 얻었다. 1. 어초설치 해역의 15.28cm/sec였고 유향은 WSW가 $20.5\%$에 대한 취송류는 최고유속이 15.28cm/sec 유향은 WSW가 $20.5\%$였다. 2. 흐름과 파에 의한 원형수하형어초의 유체저항은 약 890kg이 최대였고, 어초에 부착된 멍의 중량은 1,200kg로서 고정력이 충분하였다. 3. 파라슈트어초에 대한 최대저항은 전개용 자료가 약하여 유지되지 못하였다. 4. 제주도 근해산 중요어류 53종중 인공어초에 위집한 어종은 16종이었고 어획조성비는 참돔 $23\%, 볼라 $13\%, 보리멸 $11\%$, 우럭볼락 $7\%$, 주치 $6\%$이고 잠수관찰에서 어초의 중층부에 많은 치어가 위집된 것을 확인하였다. This study intended to investigate the shape of the artificial fish reefs settled in the waters of Seogwipo, and the thronging of fish schools into them. The results obtained are summarized as follows : 1. Two types of artifical fish reef, circularized vertical type which is composed of Cryptomeria branches and parachute type, were put off the coast of Seogwipo at $33^{\circ}14'05'$ N Lat., $126^{\circ}34'40'$ E Long. The setting place is located 0.4 sea-mile away from natural fish reefs, at 25 m in depth. And its sediment is consisted of f. S. and Sh. 2. Maximum velocity of wind drift current was 15.28 cm/sec at 15 m depth. The Current direction was $20.5\%$n in the WSW. 3. Maximum fluid resistance of the circularized vertical type to current and wind waves showed about 890 kg, and the weight of sand bags attached to the fish reef totaling 1,200 kg was enough to sustain fish reef. 4. As maximum fluid resistance of the parachute type to current and wind waves was 106.3 kg, the retaining force of sand bags was enough to sustain the fish reef, but vinyl canvas and expansion materials were so poor that the fish reef was lost by the sea current and wind waves. 5. Sixteen species of fish among 53 usually caught in this area were thronged into the artificial fish reef. The fish catches comprized Porgy (Pagrosomus major) $23\%$, black kook fish (Sebastes (Mebarus) intermis) $13\%$, sand borer (Sillago sihama) $11\%$, Sebastes (Pteropodus) hubbsi $7\%$, and file fish (Monacanthus cirrhifer) $6\%$. According to the submarine observations by fivers, it was confirmed that a lot of fish larvae thronged in the middle part of the fish reefs.

      • KCI등재

        제주도근해산 중요어류와 그 어법

        손태준 한국어업기술학회 1976 수산해양기술연구 Vol.12 No.1

        1. Around the Jeju Island, 214 fish species are described by some authors, of which 53 species are regarded as major fishes for the object of commercial fishing. 2. Major fishing method around the Jeju Island are scoop net for anchovy, gill net for mackerels, long line for sea breams. For large pelagic fishes such as yellow tail, tolling method are expected.

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