한국해안·해양공학회논문집 (Journal of Korean Society of Coastal and Ocean Engineers)

  • 제26권3호
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  • Pages.184-195
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  • 2014
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  • 1976-8192(pISSN)
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  • 2288-2227(eISSN)
한국해안·해양공학회 (Korean Society of Coastal and Ocean Engineers)
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낙동강 하구역의 홍수기 방류에 의한 수로별 유속 잔차 및 염분 분포

Spatial and Temporal Variability of Residual Current and Salinity Distribution according to Freshwater Discharge during Monsoon in Nakdong River Estuary

  • Song, Jin Il (Department of Oceanography, College of Natural Science, Inha University) ;
  • Yoon, Byung Il (Department of Oceanography, College of Natural Science, Inha University) ;
  • Kim, Jong-Wook (Department of Oceanography, College of Natural Science, Inha University) ;
  • Lim, Chae Wook (Department of Oceanography, College of Natural Science, Inha University) ;
  • Woo, Seung-Buhm (Department of Oceanography, College of Natural Science, Inha University)
  • 투고 : 2014.01.03
  • 심사 : 2014.06.27
  • 발행 : 2014.06.30
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초록

낙동강 하구역은 하구둑이 건설된 이후, 담수는 갑문 개폐에 의해서 인위적으로 방출되고 해수유입은 하구둑에 의해 억제되어왔다. 이로 인해 인위적인 수문 개방에 의한 해수와 담수의 수렴 및 혼합은 낙동강 하구역의 해수순환에 큰 영향을 미치는 것으로 나타났다. 홍수기 방류 중 낙동강 하구역의 수로별 유동 환경과 하구 흐름 특성을 조사하기 위해 유속 및 염분 관측을 수행하였다. 분석 결과 지형적 특징 및 방류의 영향에 의해 수로별 유속 및 염분 분포 특징이 상이하게 나타났다. 낙동강 하구역의 홍수기 방류에 의한 영향은 각 수로별 잔차유속 및 염분 수직분포에 다르게 작용하며, 지형적 특징은 염분침투 범위에 영향을 미침으로써 상대적으로 고염의 물이 정체되는 구간이 존재한다.

After building the dyke in Nakdong River Estuary, mixing of freshwater inflow to ocean and seawater to upstream is controlled by operating the sluice gates. Mixing and convergence of seawater and freshwater by opening the sluice gates, have a major impact on the circulation of seawater in the Nakdong River Estuary. Field measurement was carried out to study the characteristics of the estuary flow and environment of each channel of the Nakdong River Estuary. Vertical salinity distribution and residual current is different from each channel by the river discharge and topographic changes.

키워드

참고문헌

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피인용 문헌

  1. Enhanced monitoring of water quality variation in Nakdong River downstream using multivariate statistical techniques vol.57, pp.27, 2016, https://doi.org/10.1080/19443994.2015.1049963