Model Trajectory Simulation for the Behavior of the Namgang Dam Water in the Kangjin Bay, South Sea, Korea

Abstract

A Lagrangian particle tracking model coupled with the ECOM3D were used to study on the behavior of fresh water released from the Namgang Dam in terms of residence time in Kangjin Bay, South Sea, Korea. Model was calibrated until skill cores for elevation, velocity, temperature and salinity are satisfied over 85%. In the numerical simulation, particles were released in 1 hour time interval from the northern boundary. The different patterns of particle trajectory are identified under the varying dynamics from tidal to density-driven current. The average residence time of total particles are approximately 65.9 hours in the entire Kangjin Bay. The average residence time were increased from 55~65 to 70~80 hours during maximum discharge period. Discharge rate of fresh water and average residence time in the Kangjin Bay is high correlated with correlation coefficient over 0.81.

Numerical Modeling of Circulation Characteristics in the Kwangyang Estuarine System

“…과 진주만 해역을 분리하여 연구를 수행했다 (Kwak, 2008;Park et al, 2005;Jung et al, 2010;Ro and Jung, 2010). (Ro, 2007;Ro et al, 2007)과 함께 섬진강 하천수 (Kwak, 2008;Kang et al, 2011)와 남강댐 방류수 Ro and Jung, 2010;Jung et al, 2012)…”

“…, 남강댐 방류 수가 강진만 해수 순환에 미치는 영향 (Ro and Jung, 2010), 바람과 담수 유입에 의한 하계 해수순환 수치모델링 실험 (Jung, 2007), 담수 유입에 따른 성층 형성과 성층 파괴 과정 (Jung et al, 2010) 및 남강댐 방류수의 거동 특성과 체류시 간 (Jung et al, 2012) 등의 연구가 진행되었다.…”

Cause Analysis of Salinity Intrusion by Environmental Changes Considering Water Intake and Sand Mining on Seomjin River Estuary Using Model for Maintaining Corbicula Habitats

“…Kang et al also investigated changes in the density-driven layer due to discharge from the Seomjin and Nam River dams. Although studies have been conducted on the formation and destruction processes of stratification due to freshwater inflow [14] and the behavioral characteristics and residence time of discharge water from the Nam River dam [15], there has been a lack of modeling for analyzing the causes and impacts of salinity intrusion in the Seomjin River estuary.…”