논문실적
| Assessment of Groundwater Pollution and Water Quality Susceptibility Using GIS based Drastic and MT3D |
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학술지명 International Association for Impact Assessment
저자 박상영,하성룡,박대희
발표일 2007-06-03
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The land use condition and hydraulic soil property is closely related to the groundwater pollution. DRASIC (US EPA) with GIS interface was employed to model the susceptibility of groundwater pollution. Drilling survey for soil and groundwater data was conducted for 23 locations in Gimcheon-city area. MODFLOW and SCS-CN method were used to estimate groundwater table and recharge respectively. Drastic Index (DI) were extracted by overlaying the cell-based element map of groundwater table depth (D), recharge(R), aquifer media (A), soil property (S), terrain (T), unsaturated zone property (I), hydraulic conductivity (C). After delineation of high risk area of groundwater pollution, the effect of the pollutant runoff to the groundwater was estimated by MT3D model. The study results indicate that a gently sloped urban area is most susceptible for groundwater pollution and the groundwater quality could be improved at 84% by preventing the sewage leaking. |
