Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Three-Dimensional Behavior of Nakdong River Plume during the Flood Period in Summer

홍수기 낙동강 하천플륨의 3차원 거동해석

  • LEE Jong Sup (Department of Civil Engineering, Pukyong Nationai University) ;
  • YOON Eun Chan (Department of Civil Engineering, Pukyong Nationai University) ;
  • BAEK Seung Woo (Department of Civil Engineering, Pukyong Nationai University) ;
  • LEE Jae Chul (Department of Oceanography, Pukyong Nationai University)
  • Published : 2003.10.01
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Abstract

Behavior of the Nakdong River plume was studied by the analysis of the observed CTD data and numerical simulations using three-dimensional Princeton Ocean model (POM) in which the river discharge, tides and winds were considered. During the flood season of summer the 30 psu isohaline expands northward to Daebyeon and southwestward to Samcheonpo. The model results show that the isohalines are approximately parallel to the bottom slope, which suggests the possibility of upwelling induced by the topographic effects. Northwesterly wind expands the river plume to the offshore direction so that the inflow of fresh plume water into Jinhae Bay through the Gaduk Channel is constrained, then the coastal upwelling seems to be caused by the wind-driven current at the southern edge of Gaduk Island. Southwesterly wind expands the river plume toward Daebyeon, and the inflow of fresh water into Jinhae Bay is also constrained.

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References

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