Characterizing groundwater recharge using oxygen and hydrogen isotopes: a case study in a temperate forested region, South Korea
作者： Mukesh Kumar Gautam , Kwang-Sik Lee , Byeong-Yeol Song
DOI: 10.1007/S12665-018-7279-8
关键词: Isotope 、 Isotopes of oxygen 、 Groundwater recharge 、 Evapotranspiration 、 Environmental science 、 Groundwater 、 δ18O 、 Hydrology 、 Precipitation 、 Temperate climate
摘要: In the cool temperate region of South Korea, oxygen and hydrogen isotopes groundwater, lake water, precipitation were studied to determine season groundwater recharge. All samples, irrespective season, on δ18O–δ2H scale plotted along summer precipitation, suggesting largely modulates The deuterium excess values (d-excess) show clear seasonal difference, higher in winter (> 18‰) lower (< 10‰). And its resemblance d-excess value further suggests dominant role Based mass balance equation, with end-member as input variables, is composed 66% 34% precipitation. Despite study area being heavily forested, rainfall contribution than that evapotranspiration effect minimal region; may be due thin sand–gravel-based porous soil overlying highly weathered granitic rock system.
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