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Evaluation of Correlation between Chlorophyll-a and Multiple Parameters by Multiple Linear Regression Analysis
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 Title & Authors
Evaluation of Correlation between Chlorophyll-a and Multiple Parameters by Multiple Linear Regression Analysis
Lim, Ji-Sung; Kim, Young-Woo; Lee, Jae-Ho; Park, Tae-Joo; Byun, Im-Gyu;
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 Abstract
In this study, Chlorophyll-a (chl-a) prediction model and multiple parameters affecting algae occurrence in Mulgeum site were evaluated by statistical analysis using water quality, hydraulic and climate data at Mulgeum site (1998~2008). Before the analysis, control chart method and effect period of typhoon were adopted for improving reliability of the data. After data preprocessing step two methods were used in this study. In method 1, chl-a prediction model was developed using preprocessed data. Another model was developed by Method 2 using significant parameters affecting chl-a after data preprocessing step. As a result of correlation analysis, water temperature, pH, DO, BOD, COD, T-N, , , flow rate, flow velocity and water depth were revealed as significant multiple parameters affecting chl-a concentration. Chl-a prediction model from Method 1 and 2 showed high value with 0.799 and 0.790 respectively. Validation for each prediction model was conducted with the data from 2009 to 2010. Training period and validation period of Method 1 showed 20.912 and 24.423 respectively. And Method 2 showed 21.422 and 26.277 in each period. Especially BOD, DO and played important role in both model. So it is considered that analysis of algae occurrence at Mulgeum site need to focus on BOD, DO and .
 Keywords
Nakdong River;Chl-a;Multiple parameters;Data Preprocessing;Multivariate Statistics;
 Language
Korean
 Cited by
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