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논문 기본 정보

자료유형
학술대회자료
저자정보
Kim, Nam-Jin (Dept. of Earth and Environmental Sciences, Korea University) Yun, Seong-Taek (Dept. of Earth and Environmental Sciences, Korea University) Kwon, Man-Jae (Dept. of Earth and Environmental Sciences, Korea University) Kim, Hyoung-Soo (Water Resour. Res., Inst.) Kim, Chang-Hoon (Hans Engineering Co. Ltd.) Koh, Yong-Kwon (Korea Atomic Energy Res., Inst.)
저널정보
한국지하수토양환경학회 한국지하수토양환경학회 학술발표회 한국지하수토양환경학회 2000년도 추계학술대회
발행연도
2000.1
수록면
232 - 236 (5page)

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Multi-regression statistical analyses were applied for the water quality data of shallow alluvial ground water (n = 47) collected from the Youngdeok area, in order to quantitatively generalize the natural (non-anthropogenic) causes of regional water quality variation. Seven samples having the high contamination index ( $C_{a}$ > 3) reflect the striong effects by anthropogenic activity. Most of the alluvial groundwaters have acquired their quality primarily due to the dissolution of carbonate minerals. The results of multi-regression analysis show that chlorine is mainly derived from seawater effect. Sulfur isotopic compositions of dissolved sulfur and the S $O_4$/Cl ratio also enable us to discriminate the samples (n = 18) which are affected by atmospheric input of marine aerosol (sea-spray) and also by mixing between freshwater and seawater. Hydrogen and oxygen isotope data of the samples collected lie close to the local meteoric water line obtained from nearby Pohang city but has lower slope (5.45) on the $\delta$D-$^{18}$ O plot, indicating that alluvial groundwater was recharged from infiltrated meteoric water which has undergone some degree of kinetic evaporation. The estimated initial isotopic composition of the recharged water ($\delta$D = -74.8$^{0}$ /$_{00}$, $\delta$$^{18}$ O = -10.8$^{[-1000]}$ /$_{[-1000]}$ ) suggests that the alluvial ground water recharge largely occurs during summer storm events.s.s.

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