• 한국석유지질학회:학술대회논문집
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• 한국석유지질학회 1997년도 제4차 학술발표회 발표논문집
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• pp.25-35
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• 1997

The latest Pleistocene-Holocene deposits on the Korea Strait shelf form a high-frequency sequence which consists of three systems tracts: the lowstand, transgressive and highstand systems tract. The lowstand systems tract is distributed on the shelf margin and trough region, whereas the highstand systems tract is confined only to the inner shelf. Although the transgressive systems tract between the lowstand systems tract and the highstand systems tract was identified over a wide area of the shelf, it is either very thin (a few meters thick) or absent.

• 한국해양학회지
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• 제8권1호
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• pp.46-52
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• 1973

From available data, the movement of the cold water in the Korea Strait was investigated. The cold water forms an undercurrent with a speed of 0.10knots near Ulgi in June. Sometimes it reaches a speed of 0.35knots. The cold water forms a sharp wdege in the western channel like a salt wedge in an estuary. The calculated volume transport of the cold water is 17,135 cubic meters per second in June. The external influences are also discussed.

• 한국어류학회지
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• 제11권1호
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• pp.72-85
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• 1999

전선역 주변해역의 자치어 종 조성에 관한 조사가 대한해협을 대상으로 1993년 8월에 실시되었다. 북위 $35{\sim}36^{\circ}$의 대륙사면 주변해역에 전선이 형성되어있었다. 총 125 종류의 자치어가 출현하였다. 우점종은 멸치와 앨퉁이였으며 두 종의 출현량 비율은 각각 84.3%와 7.7%였다. 출현 빈도가 높은 종은 망둑어과, 돛양태과 그리고 자리돔과 둥이다. 위의 5종은 크게 모든 조사해역에서 출현하는 멸치와 돛양태과, 전선역을 경계로하여 수온이 높은 전선역의 남부해역에 주로 출현하는 망둑어과와 자리돔과 그리고 전선역을 포함한 전선역의 북부해역에 주로 출현하는 앨퉁이로 크게 구분되었다. 본 연구해역에서 자치어의 종 조성과 지리적인 분포는 어류의 종별 산란생태 뿐만 아니라 대마난류수와 동해고유수의 접촉으로 형성된 전선의 지리적인 분포와 구조등과 같은 물리적인 영향을 받는 것으로 판단된다.

• Ocean and Polar Research
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• 제34권1호
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• pp.37-51
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• 2012

We investigated the distribution and species composition of zooplankton in relation to hydrographical characteristics in the Korea Strait during the winter (February) and summer (July) of 2009. Satellite images of sea surface temperatures and in situ CTD data showed that the southeastern water zone (St3-5) off Jeju Island was strongly influenced by the Tsushima Current during both the winter and summer, whereas the Changjiang Diluted Water, characterized as water with relatively low salinity, was evident in the coastal waters of Jeju Island during the summer. During winter, zooplankton abundance was significantly higher than in the summer, with dominance by copepods, ostracods, siphonophorans, appendicularians, and nauplii. In both seasons, copepods represented >70% of the total zooplankton population. Calanus sinicus, a large calanoid copepod, was dominant in near the coast, and that may be associated with the intrusion of low salinity water (i.e., the Changjiang Diluted Water) along the coast. The abundance of P. parvus s.l. and A. omorii, known as neritic copepods, was mainly associated with the Korea Southern Coastal Water. Foraminiferans, Ostracods, O. plumifera, and P. aculeatus were concentrated in the southeastern water off Jeju Island during both seasons; showing their association with the Tsushima Current, which is characterized warm, high salinity water. Our results suggest that the distribution, abundance, and species composition of zooplankton are highly influenced by different water masses in the Korea Strait.

• Ocean and Polar Research
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• 제24권2호
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• pp.147-152
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• 2002

Seasonal and interannual variation of volume transport through the La-Perouse Strait were estimated using the difference of sea level observed at Krillion of Sakhalin, Russia, and Wakkanai of Hokkaido, Japan, during the period of 1975-1988. Historical sea level measurements between Russian and Japanese tide gauge data were normalized using an independent direct volume transport measurement. Volume transport from the East Sea (Sea of Japan) to the Sea of Okhotsk varied from -0.01 to 1.18 Sv with an annual mean value of 0.61 Sv. Monthly water transport rates showed a unimodal distribution with its maximum occurring in summer (August) and minimum in winter (December-February). The annual mean volume transport varied from 0.2 to 0.8 Sv during the period of 1975-1988 with the maximum variance of 0.6 Sv.

• 한국해양학회지:바다
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• 제9권2호
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• pp.73-81
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• 2004

대한해협 수송량의 시간변동성을 추정하기 위해 폐기된 대한해협 해저통신케이블을 사용한 해저케이블 전압측정이 1998년 3월이래 진행되어 왔다. 해저케이블 측정 전압은 이 해협에 설치된 바닥계류형 ADCP 유속자료에서 계산한 수송량과 큰 선형 상관관계를 보였다. 이 논문에서는 국내 해저케이블 전압측정 연구를 간략히 정리하였다. 대한해협 해저케이블 전압측정 사례를 중심으로 해저케이블 전압측정 방법, 현재까지의 주요 관측 결과들을 소개하고, 향후 한반도 주변의 해저케이블 전압측정 연구 전망을 언급하였다.

• Journal of the korean society of oceanography
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• 제32권1호
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• pp.1-7
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• 1997

Surface current fields in the eastern East China Sea (ECS) were constructed by analyzing trajectories of 58 satellite-tracked surface drifters released during 1991-1996. Composite trajectories and 20-minute-by-20-minute box-averaged current vectors show that the basic current pattern composes of: the Kuroshio main stream, which turns eastward toward the Tokara Strait; a northward branch current of the Kuroshio on the ECS outer shelf deeper than 100 m; and an anticyclonic circulation in the northern Okinawa Trough west of Kyushu. The northward branch current sharply changes its direction to the northeast when it crosses a line connecting Cheju Island, Korea and Goto Islands, Japan. The basic pattern of current field changes slightly from winter to summer, and the main axis of the Tsushima Current in the Korea Strait is found to shift seasonally. The drifter experiment does not support the claim that the Yellow Sea Warm Current is separated from the northward branch current on the outer shelf southeast of Cheju Island. We suggest that the use of the term 'Tsushima Current' be limited to the northeast channel flow in the Korea Strait. The new term 'Kuroshio Branch Current' is suggested for the northward branch current on the outer shelf south of Cheju-do, which is separated from the Kuroshio.

• 한국해양학회지
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• 제19권2호
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• pp.200-209
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• 1984

1982년 여름에 실시된 해양관측자료에 의하면 대마난류의 흐름은 한국해협 서수도에서 70cm/sec 이상의 강한 표면유속을 갖는 두 개의 분지 형태를 보였다. 부산에서 약 8km 부근에 나타나는 동한 난류로 불리우는 한 개의 분지는 한국 동해안을 따라 북쪽으로 흐르며, 부산으로부터 약 20km 떨어져 나타난 제2분지는 한국해협 통과 후 동쪽으로 향한다. 두 개의 흐름으로 분기되는 현상은 대마난류가 부산-대마도 단면에 이르기 이전에 형성되며, 두 분지의 용적 수송량 및 흐름의 폭은 큰 차이를 보이지 않는다. 분지의 갯수는 서수도의 폭에 의해 좌우되는 듯 하며, 두 분지의 흐름은 층두께의 변화와 서수도와 동해의 폭의 비율과 관련되는 것으로 보인다.

• 한국수산과학회지
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• 제30권6호
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• pp.1033-1043
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• 1997

In order to understand the generation mechanism of the Ulleung Eddy, we carried out a series of numerical experiments using the nonlinear 11/2 - layer model allowing the inflow of the Tsushima Current. According to our numerical results, the Ulleung Eddy was generated due to the inflow variations of the Tsushima Current. Its inflow through the Korea Strait was deflected to the east due to the Coriolis force and the nonlinear self advection. Thus, an anticyclonic motion was formed at the north of the Korea Strait. The inflow became a coastal boundary current, and finally flowed out model ocean through the eastern exit. When the speed of inflow decreased slowly, the eddy- like motion at the north of the Korea Strait changed into an enclosed anticyclonic eddy of about 200 km in diameter. The Ulleung Eddy became circular shape due to the nonlinear self advection, then changed into elliptical shape in meridional direction because of the blocking effect of the western boundary.

• 한국해안해양공학회지
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• 제7권1호
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• pp.126-134
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• 1995

국립수산진흥원이 관측한 염분자료를 분석하여 여름철 남해의 저염화 현상을 규명하였다. 6월과 8월에 남해 전 수심의 저염화는 강수량과 강물의 유입으로는 설명될 수 없고, 주위 해역 중 유일하게 저염수가 존재하는 제주해협 서편 해역 저염수의 유입으로만 설명이 가능하다. 염보존 Box 모델의 결과에 의하면, 대한해협 서수도의 수송량을 1.4-2.0$\times$$10^{6}$ ㎥/sec이라고 할 때, 이 수송량의 31-36% 정도인 0.5-0.6$\times$$10^{6}$ ㎥/sec(평균유속은 10-13cm/sec)의 수송량이 제주해협을 경유하여 남해로 유입되고, 나머지는 제주도와 대마도 사이로 유입된다.