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자료유형
학술대회자료
저자정보
WANG, P.F (Environmental Sciences and Applied System Branch, SSC SD San Diego) CHOI, WOO-HEE (Environmental Sciences and Applied System Branch, SSC SD San Diego) LEATHER, JIM (San Diego State University Foundation, San Diego, CA) KIRTAY, VIKKI (Environmental Sciences and Applied System Branch, SSC SD San Diego)
저널정보
한국수자원학회 한국수자원학회 학술발표회 한국수자원학회 2005년도 학술발표회(2)
발행연도
2005.1
수록면
1,189 - 1,192 (4page)

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Due to their slow degradation properties, hydrophobic organic contaminants in estuarine sediment have been a concern for risks to human health and aquatic organisms. Studies of fate and transport of these contaminants in estuaries are further complicated by the fact that hydrodynamics and sediment transport processes in these regions are complex, involving processes with various temporal and spatial scales. In order to simulate and quantify long-term attenuation of Polycyclic Aromatic Hydrocarbons (PAH) in the Elizabeth River, VA, we develop a modeling approach, which employs the U.S. Environmental Protection Agency's water quality model, WASP, and encompasses key physical and chemical processes that govern long-term fate and transport of PAHs in the river. In this box-model configuration, freshwater inflows mix with ocean saline water and tidally averaged dispersion coefficients are obtained by calibration using measured salinity data. Sediment core field data is used to estimate the net deposition/erosion rate, treating only either the gross resuspension or deposition rate as the calibration parameter. Once calibrated, the model simulates fate and transport PAHs following the loading input to the river in 1967, nearly 4 decades ago. Sediment PAH concentrations are simulated over 1967-2022 and model results for Year 2002 are compared with field data measured at various locations of the river during that year. Sediment concentrations for Year 2012 and 2022 are also projected for various remedial actions. Since all the model parameters are based on empirical field data, model predictions should reflect responses based on the assumptions that have been governing the fate and sediment transport for the past decades.

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