• Proceedings of the Korean Environmental Sciences Society Conference
• /
• 1997.10a
• /
• pp.125-127
• /
• 1997

• Proceedings of KOSOMES biannual meeting
• /
• 2008.05a
• /
• pp.61-67
• /
• 2008

This study analyzes the characteristics of material transportation between Busan new-port and Nakdong river estuary. Measurements of water temperate, salinity, turbidity, and tide is also analyzed to determine the characteristics of sea water and described the tidal current between two regions. For the purpose of indicating characteristics of tidal current numerical modeling is used. From the observed results, the total volume transport of sea water calculations revealed $184.71m^3/sec$ and residual volume transport was $(+)59.74m^3/sec$ during the 1st field measurement, and the total volume transport was $331.15m^3/sec$ and residual volume transport was $(-)28.88m^3/sec$ during the 2nd. The numerical simulation for three different topography cases are calculated. The results are summarized as follows: 1) The volume of material transportation about $0.7\sim18.4%$ is decreased as the depth of Busan new-port decrease (10 m). 2) The volume of material transportation about $3.5\sim21.9%$ is increased, as channel(water depth is 5 m) constructed to the Nakdong river estuary direction.

• 한국해양학회지
• /
• v.1 no.1_2
• /
• pp.7-13
• /
• 1966

한국해협(韓國海峽)을 통과(通過)하는 해수용적수송량(海水容積輸送量)의 계절(季節) 및 영년변화(永年變化)에 대(對)하여 기존자료(旣存資料)를 써서 지형유리론(地衡流理論)에 입각(立脚)하여 계산(計算) 음미(吟味)하였다. 한국해협(韓國海峽)을 통과(通過)하는 “쯔시마” 난류(暖流)의 북방수송량(北方輸送量)은 약 $2{\times}10^6m^3$/sec의 우세(優勢)한 년변화량(年變化量)을 갖고 동춘절(東春節)의 $0.33{\times}10^6m^3$/sec 로부터 하추절(夏秋節)의 $2.21{\times}10^6m^3$/sec 사이에서 변화(變化)한다. 그리고 정미(正味)의 수송량(輸送量)의 년평균치(年平均値)는 1935년(年)의 $1.3{\times}10^6m^3$/sec 로부터 1939년(年)의 $0.8{\times}10^6m^3$/sec사이로 변화(變化)하며 영년변화량(永年變化量)은 약 $0.5{\times}10^6m^3$/sec로서 년변화량(年變化量)의 약 1/4밖에 안된다. 북방수송량(北方輸送量)의 영년변화(永年變化)는 약(約) 4년주기(年週期)를 갖는 것 같이 보인다.

• 한국해양학회지
• /
• v.28 no.4
• /
• pp.281-291
• /
• 1993

A time-dependent primitive two0dimensional calculation is conducted to investigate the variations of Vol. transport onto the Yellow Sea and the Korea Strait with real bathymetries and to tract the Lagrangian movement of water particles. A series of experiment of the barotropic Kuroshio intrusions shows that the eddy induced branching of Kuroshio has sufficient intensity as to modify the continental shelf circulation. This intrusion seems to be one of the important forcing terms such as winds. tides and buoyancy that can also affect the dynamics in the region of the continental shelf. Transport variations across the shelfbreak due to the branching of Kuroshio which come particularly from the southwest of the Kyushu Island, have a strong relationship with the transport variations across the Korea Strait and in the southern area of the Yellow sea. The particle trajectories of the model results are well agreed with the trajectories of satellite tracking drifters obtained by one of the WOCE/TOGA program except the longer travel time period in the present model.

• Journal of the Korean Society for Marine Environment & Energy
• /
• v.2 no.1
• /
• pp.63-73
• /
• 1999

The results of residual currents simulation by a three-dimensional hydrodynamic model showed the water volume transport and the residence time to be about 4km³ per tidal cycle and about 6 years through the line of latitude, 34° 25' N in the Yellow Sea, and to be about 13km³ per tidal cycle and about 2.5 years through the southeastern boundary line of the Yellow Sea, respectively. On the bases of the entire seawater volume of the Yellow Sea and dissolved oxygen (DO) in summer, the environmental capacity of the Yellow Sea for reception of the maximum pollution load without reducing DO concentration below 5.0mg/ℓ in seawater may be estimated to be about 58×10/sup 6/tons of chemical oxygen demand (COD), which is equivalent to the load about 8 times as high as the annual organic pollution load from 14 major rivers. On the bases of DO transports by residual currents calculated on the line of 34° 25' N latitude and on the southeastern boundary line of the Yellow Sea being about 57×10³tons and about 203×10³tons of DO per day, respectively, the environmental capacities of the Yellow Sea for reception of the maximum pollution loads without reducing DO concentration in seawater nay be equivalent to COD loads about 3 times and 10 times, respectively, as high as the existing organic pollution loads from 14 major rivers.

• Proceedings of the Korean Society of Fisheries Technology Conference
• /
• 2000.10a
• /
• pp.160-161
• /
• 2000

동지나해로부터 동해로 유입되는 대마난류의 계절변동과 수송량에 관한 많은 연구가 대한해협에서 수행되어왔다. 이러한 연구들은 수문학적 자료로부터 Margule's equation으로 대한해협을 통과하는 수송량을 계산하거나 부산, 이즈하라와 하카타의 해수면 변동자료로 각 지점간의 해면차와 대한해협에서 실제 관측한 유속 또는 평균 지형류와의 관계를 연구했다. 또한 대한해협의 몇개의 지점에 대하여 ADCP와 CTD 관측을 통해서 대마난류의 실제유속과 지형류적 유속을 비교였다. (중략)

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.12 no.4 s.27
• /
• pp.285-291
• /
• 2006

In order to find the current structure between Sori Island and Yokji Island in the South Sea of Korea, water movements were measured in May, June, October and November of 2004 using ADCP(acoustic doppler current profiler). In the southwestern part of Yokji Island, northeastward flow in whole of depth was dominant by mean current The boundary layer between the upper layer and lower layer was formed between 15m and 20m and each layer different flow. The upper and lower layers have a different direction and speed of currents. In the calculated volume transport, the northeastward transport was greater than southwestward.

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.14 no.3
• /
• pp.197-203
• /
• 2008

This study analyzed the characteristics of sea water transport between Busan New-port and the Nakdong River estuary. Numerical modeling was used to evaluate the characteristics of the tidal current. Numerical simulations of three different topographies were conducted. The results are summarized as follows: 1) The volume of sea water transport was reduced by $0.7{\sim}18.4%$ when water depth was decreased at Busan New-port (10 m); 2) The volume of sea water transport was increased by $3.5{\sim}21.9%$ when a channel (depth 5 m) was constructed in the direction of the Nakdong River estuary.

• Korean Journal of Fisheries and Aquatic Sciences
• /
• v.25 no.1
• /
• pp.58-64
• /
• 1992

A barotropic model is run over the Northwest Pacific Ocean to examine the formation and transport of the Tsushima Warm Current. The results indicate that the Tsushima Warm Current is a downstream extension of the Taiwan Warm Current. Local wind does not change the amount of transport of Tsushima Warm Current but it changes much the initial flow pattern of Tsushima Warm Current such that for southerly wind, the transport is through the Taiwan Strait but for northerly wind, it is through the eastern side of Taiwan.

• Proceedings of the Korean Society of Fisheries Technology Conference
• /
• 2001.05a
• /
• pp.237-239
• /
• 2001

항 또는 폐쇄성 만에서의 수질은 만내로 유입하는 오염부하량이 얼마나 원활하게 외해로 방출되느냐에 따라 좌우된다 이러한 문제는 해수교환, 해수교류라는 말로 표현되고 있다. 일반적인 교환의 개념에서 볼 때 해수교환이란 어떤 해역(수괴)과 어떤 해역(수괴)이 현상의 1주기 사이에 서로 해수를 교환하는 것을 말한다. 실제 해양에서 물질수송은 조류, 바람, 밀도류 그리고 해류등이 복합적으로 작용하고 있으며, 어떤 한 지점에서 1조석주기에 대하여 이러한 성분을 적분한 흐름을 잔차류라고 부른다. (중략)