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조규대 한국수산학회 1981 한국수산과학회지 Vol.14 No.4
The East China Sea is an important region as nursery and apawning grounds for pelagic fishes such as jack mackerel, common mackerel etc., and thus constitutes a major fishing area for pursseine fishery. The environment surrounding in this region is under the influence of the Yellow Sea Cold Water, China Coastal Water and Kuroshio Current. The purpose of this study was to clarify the effects of oceanographic conditions and thermal fronts on the formation of the fishing grounds for the mackerels in the East China Sea. Through the analyses of fisheries statistics during 1968-1976 and temperature data, the following facts are found: 1) Approximately 70% of the total mackerel(common) catches appeared to be come from the Tsushima Current region which includes Sakai coast of the Japan Sea, eastern Tsushima and Shirase Island, and Jeju Island of Korea. This area covers only about 8% of the East China Sea. 2) Main fishing grounds for the jack mackerel are also centered around the area of southwestern Goto, Shirase and eastern Tsushima Island where the catches accounted for about 54% of the total jack mackorel catches. 3) Fluctuations in annual catches are relatively small in the Tsushima Current region, compared to other regions such as Yellow Sea, southwestern coast of Kyushu and mid-western part of the East China Sea, where the fisheries yields varied considerably due to unstable fishing conditions. 4) It appears that the fishing grounds for the jack mackerel are mainly distributed along the warmer region (15-20��) of the thermal front, and those for the common mackerel are in somewhat colder region (13-16��) in the Tsushima Current.
대한해협 서수도의 저층수에 대한 연구 - 1 : 저층 냉수의 유입 경로 the inflow path of the bottom cold water
조규대,문창호,윤종휘,강신현 한국수산학회 1992 한국수산과학회지 Vol.25 No.1
국립수산진흥원의 16개년(1973∼1988)의 해양 관측 자료와 1989년 11월 6∼11일 동안 한국해양대학 실습선으로 관측한 CTD 자료를 사용하여 대한해협 서수도에 존재하는 저층 냉수의 유입 경로를 조사하였다. 대한해협 서수도의 저층 수온은 하계에 가장 낮으며, 해에 따라 변동이 큰 것으로 나타났다. 하계 대한해협 서수도에 저층 냉수가 존재하였던 해의 수온 분포에 의하면, 동해 남서부 해역에 있는 냉수가 울산 남동쪽 10∼15마일 떨어진 해역을 거쳐 대한해협 서수도에 유입되며, 이 냉수는 이류하는 동안 그 특성이 다소 변하는 것으로 나타났다. With 16 years' oceanographic data(1973∼1988) of the National Fisheries Research and Development Agency and the CTD data collected by a training ship of Korea Maritime University during Nov. 6∼11, 1989, the inflow path of the bottom cold water in the western channel of the Korea Strait were investigated. Temperature of the bottom water in the western channel shows the lowest in summer and large annual variation. According to the temperature distributions in the years when the bottom cold water exists in the western channel in summer, the cold water in the southwestern region of the East Sea seems to intrude into the western channel through the sea southeast 10∼15 miles off Ulsan with its properties showing slight change during advection.