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J Korean Soc Environ Eng > Volume 38(2); 2016 > Article
J Korean Soc Environ Eng 2016;38(2): 71-78. doi: https://doi.org/10.4491/KSEE.2016.38.2.71
통계분석을 이용한 낙동강 창녕함안보 구간의 수질특성 연구
곽보라, 김일규
부경대학교 환경공학과
Characterization of Water Quality in Changnyeong-Haman Weir Section Using Statistical Analyses
Bo-ra Gwak, Il-kyu Kim
Department of Environmental Engineering, Pukyong National University
Corresponding author  Il-kyu Kim ,Tel: 051-629-6528 , Fax: 051-621-8166, Email: ikkim@pknu.ac.kr
Received: December 22, 2015;  Revised: February 1, 2016;  Accepted: February 18, 2016.  Published online: February 29, 2016.
ABSTRACT
The study of water environment system in Changnyeong-Haman weir section using a statistical analysis has been conducted. Statistical analyses used in this study were the correlation analysis, the principal components, and the factor analysis. The purpose of the study is to establish better understanding of relationships between water quality factors in the Changnyeong-Haman weir section which can provide useful information to manage Nakdong river. According to correlation analyses on COD and TOC, it revealed that the value of correlation coefficient was 0.844. Furthermore, the results from the principal component analysis categorized the water quality factors into three factor groups, the first principal factor group included COD, TOC, BOD, pH, water temperature (WT). And, it was observed that the concentration of cyanobacteria in the water body decreased, while the concentrations of the diatoms and the green algae increased after the events of rainfall.
Key Words: Changnyeong-Haman Weir, Factor Analysis, Multivariate Analysis, Principle Component Analysis, Water Quality
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