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2D Numerical Study of Diatom Bloom Based on Water Temperature Effect on Its Growth

Author(s): Il Won Seo; Jun Song Kim

Linked Author(s): Il Won Seo

Keywords: Diatom; Water temperature; Weighting function; CTM-2D

Abstract: Diatom bloom degrades ecological values in aquatic systems. In eutrophic rivers, diatom growth is sensitive to water temperature. In this study, an empirical relation between diatom growth and water temperature was derived from field observations to yield a weighting function on maximum growth rate of diatom. The derived weighting function was combined with a 2D advection-dispersion equation, to estimate growth rate, of Contaminant Transport Model-2D (CTM-2D) which is a 2D finite element code to analyze behavior of pollutants. Simulation results showed good agreement with observation. Therefore, the analysis of water temperature effect on the diatom growth was essential as much as advection and dispersion for temporal and spatial prediction of the diatom bloom.

DOI:

Year: 2016

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