Abstract
The Assessment of Coastal Water Quality Grade Using GIS Track: Ocean, Coastal, and Marine Resources Author(s): Jong-Chul Jeong The purpose of this study is to assess spatiotemporal variation of coastal water quality according to time and location changes. For this, we developed numerical marine trophic index base on four water quality components and applied this index to the water quality data measured in the Korean coastal zone for the 7-year period from 1997 to 2003. Water quality data is obtained only at selected sites even though it is potentially available at any location. Therefore, to estimate spatial variation of coastal water quality, it is necessary to estimate the unknown values at unsampled locations based on observation data. In this study, we used IDW (Inverse Distance Weighted) method to predict water quality components at unmeasured locations and applied marine trophic index to predicted values obtained by IDW interpolation. The results of this study indicate that marine trophic index and spatial interpolation are useful for understanding spatiotemporal characteristics of coastal water quality. Jong-Chul Jeong NSU GIS 21, Maeju-ri Seonghwan-eup Namseoul University Cheonan city 330-707 KR Phone: 82-41-580-2375 E-mail: jcjeong66@yahoo.co.kr |
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