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http://dx.doi.org/10.7837/kosomes.2013.19.5.439

Temporal and Spatial Variations of Water Quality in the Cheonsu Bay of Yellow Sea, Korea  

Park, Soung-Yun (West Sea Fisheries Research Institute, National Fisheries Research and Development Institute)
Heo, Seung (West Sea Fisheries Research Institute, National Fisheries Research and Development Institute)
Yu, Jun (West Sea Fisheries Research Institute, National Fisheries Research and Development Institute)
Hwang, Un-Ki (West Sea Fisheries Research Institute, National Fisheries Research and Development Institute)
Park, Jong-Su (West Sea Fisheries Research Institute, National Fisheries Research and Development Institute)
Lee, Sung-Min (West Sea Fisheries Research Institute, National Fisheries Research and Development Institute)
Kim, Chang-Mi (West Sea Fisheries Research Institute, National Fisheries Research and Development Institute)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.19, no.5, 2013 , pp. 439-458 More about this Journal
Abstract
Temporal and spatial variations of water quality were investigated in the Cheonsu Bay of Yellow Sea, Korea from 2010 to 2011. Water samples were collected at 16 stations and physicochemical parameters were analyzed including water temperature, salinity, suspended solids (SS), chemical oxygen demand (COD), dissolved oxygen (DO), Chlorophyll a and nutrients. Spatial distribution patterns of all survey items were not clear among stations but the bimonthly variations were distinct except the bottom water of the suspended solids. The trend analysis by principal component analysis (PCA) during 2 years revealed the significant variations in water quality in the study area. Spatial water qualities were discriminated into 3 clusters by PCA; station cluster in the surface water 1, 2~11, and 12~16, the bottom water 1, 2~7, and 8~16. Annual bimonthly water qualities were clearly discriminated into 3 clusters by PCA. But tend of cluster in the surface and bottom water was difference, period most of the research was low in nutrient. Ecology-based water quality criteria was a good level of grade II. Bimonthly results are shown as III grade(normal) at June and August, II grade(good) at October and December and I grade for February and April. Water quality was showed by the input of fresh water same as those of Kyoungin coastal area, Asan coastal area, Gunsan coastal and Mokpo coastal area in the Cheonsu.
Keywords
Water quality; Cheonsu Bay; Spatial distribution patterns; Bimonthly variations; Principal component analysis; Water Quality Index;
Citations & Related Records
Times Cited By KSCI : 11  (Citation Analysis)
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