남해 강진만 담수유입에 따른 체류시간 변화 모델링
Modeling Variation in Residence Time Response to Freshwater Discharge in Gangjin Bay, Korea
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초록
The term residence time is defined as the time taken for substances in a system to leave the system and is a usefulconcept to explain the physical environment characteristics of a coastal area. It is important to know the spatial characteristicsof the residence time to understand the behavioral properties of pollutants generated in a marine system. In this study, the spatial distribution of average residence time was calculated for Gangjin Bay, Korea, using a hydrodynamicmodel including a particle tracking module. The results showed that the average residence time was about10 days at the surface layer and about 20 days at the bottom layer. Spatially, this was the longest residence time inthe southwestern sea. There was no significant difference in average residence time at the surface layer due to freshwaterdischarge, but spatial variation at the bottom layer was larger. The average residence time at the bottom layerdecreased in the southwestern area due to freshwater discharge and increased in the northern area. This result suggeststhat the residence time of anthropogenic pollutants may have a large spatial difference depending on the freshwaterdischarge, and thus the time taken to influence cultured organisms may also vary.
Abstract
The term residence time is defined as the time taken for substances in a system to leave the system and is a usefulconcept to explain the physical environment characteristics of a coastal area. It is important to know the spatial characteristicsof the residence time to understand the behavioral properties of pollutants generated in a marine system. In this study, the spatial distribution of average residence time was calculated for Gangjin Bay, Korea, using a hydrodynamicmodel including a particle tracking module. The results showed that the average residence time was about10 days at the surface layer and about 20 days at the bottom layer. Spatially, this was the longest residence time inthe southwestern sea. There was no significant difference in average residence time at the surface layer due to freshwaterdischarge, but spatial variation at the bottom layer was larger. The average residence time at the bottom layerdecreased in the southwestern area due to freshwater discharge and increased in the northern area. This result suggeststhat the residence time of anthropogenic pollutants may have a large spatial difference depending on the freshwaterdischarge, and thus the time taken to influence cultured organisms may also vary.
참고문헌 (22)
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