초록

용어보기논문에서 용어와 풀이말을 자동 추출한 결과로, 시범 서비스 중입니다. AI-Helper

Abstract ▼ AI-Helper

³H input history in South Korea was reconstructed by correlation analysis between ³H measurements for precipitation at three stations in Korea and those at IAEA GNIP stations. The results were applied to estimate mean residence time (MRT) and to charaterize mixing properties of natural waters in typ...

³H input history in South Korea was reconstructed by correlation analysis between ³H measurements for precipitation at three stations in Korea and those at IAEA GNIP stations. The results were applied to estimate mean residence time (MRT) and to charaterize mixing properties of natural waters in typical geothermal areas (Yuseong, Bugok and Pocheon) and CO₂-rich water producing areas (Jungwon and Chojeong) using lumped-parameter models. Measured ³H levels were in the range of 0 to 17 TU, which increased from deep groundwater to shallow groundwater. Deep groundwaters with higher temperature have MRT greater than 50 years. One shallow groundwater in Pocheon area shows the bomb-peak MRT with low degree of mixing, indicating it is ascending through narrow flow paths. Groundwaters with higher CO₂ content in Jungwon and Chojeong area have MRT greater than 50 years whereas deep groundwater with lower CO₂ content in Chojeong has MRT less than 15 years. However, deep groundwater with lower temperature, some bedrock groundwater, and shallow groundwater in Jungwon area have much lower ³H contents than expected from mixing models. The lower ³H contents are likely to be due to higher fraction of ³H-free deep groundwater through mixing processes such as binary mixing than estimated by dispersion or exponential models. This indicates that multi-tracer approaches involving ³H and additional environmental tracers are needed to evaluate various mixing models for better characterization of MRT and mixing properties of groundwater systems.

주제어