Econ. Environ. Geol. 2002; 35(2): 113-120

Published online April 30, 2002

© THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY

Oxygen and Hydrogen Isotopic Compositions of Stream Waters in the Han River Basin

Kim-Kyu Han*, Lee-Sae Hee

Department of Science Education, Ewha Womans University, Seoul 120-750 Korea

Correspondence to :

Kim-Kyu Han

kyuhan@mm.ewha.ac.kr

Received: October 25, 2001; Accepted: April 26, 2002

Abstract

Oxygen and hydrogen isotopic compositions of stream water in the Han river basin are expressed by the equation of δD=6.6δ18O-7.4, which is not satisfy the meteoric water line (δD=8δ18O+10). It might be depended on the local climatic condition and the evaporation effect in the Han river basin. The δ18O and δD values of stream water in the Han river basin range from -8.2 to -10‰ (avg. -9.1‰) and -60 to -96‰ (avg. -69‰), respectively. The stream water from the South Han river (δ18O= -8.9~ -10‰, avg. -9.3‰ δD= -66~ -96‰, avg. -69‰) is slightly more depleted in 18O and D than those of North Han river (δ18O= -8.4~ -9.7‰, avg. -9.2‰, δD= -64~ -95‰, avg.-69‰). It reflects more altitude effect than the effect of latitude and inflow of the 18O enriched SO42- and HCO3- from the carbonate rock and sulfide minerals in the Taebagsan and Hwanggangri mineralized zone. The Main stream water of the Han river having δD= -60~ -76‰ (avg. -68‰) and δ18O= -8.2~ -10‰ (avg. 9.0‰) is enriched in 18O compared to the South and North Han river waters, which is caused by the evaporation effect. Binary simple mixing ratio of the Main Han river water between South and North Han river waters was obtained to be 6 : 4 by the isotopic data, suggesting a strong influence of South Han river water to the Main Han river water.

Keywords oxygen and hydrogen isotopic compositions, stream water, Han river basin, altitude effect, evaporation effect.

Article

Econ. Environ. Geol. 2002; 35(2): 113-120

Published online April 30, 2002

Copyright © THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY.

Oxygen and Hydrogen Isotopic Compositions of Stream Waters in the Han River Basin

Kim-Kyu Han*, Lee-Sae Hee

Department of Science Education, Ewha Womans University, Seoul 120-750 Korea

Correspondence to:

Kim-Kyu Han

kyuhan@mm.ewha.ac.kr

Received: October 25, 2001; Accepted: April 26, 2002

Abstract

Oxygen and hydrogen isotopic compositions of stream water in the Han river basin are expressed by the equation of δD=6.6δ18O-7.4, which is not satisfy the meteoric water line (δD=8δ18O+10). It might be depended on the local climatic condition and the evaporation effect in the Han river basin. The δ18O and δD values of stream water in the Han river basin range from -8.2 to -10‰ (avg. -9.1‰) and -60 to -96‰ (avg. -69‰), respectively. The stream water from the South Han river (δ18O= -8.9~ -10‰, avg. -9.3‰ δD= -66~ -96‰, avg. -69‰) is slightly more depleted in 18O and D than those of North Han river (δ18O= -8.4~ -9.7‰, avg. -9.2‰, δD= -64~ -95‰, avg.-69‰). It reflects more altitude effect than the effect of latitude and inflow of the 18O enriched SO42- and HCO3- from the carbonate rock and sulfide minerals in the Taebagsan and Hwanggangri mineralized zone. The Main stream water of the Han river having δD= -60~ -76‰ (avg. -68‰) and δ18O= -8.2~ -10‰ (avg. 9.0‰) is enriched in 18O compared to the South and North Han river waters, which is caused by the evaporation effect. Binary simple mixing ratio of the Main Han river water between South and North Han river waters was obtained to be 6 : 4 by the isotopic data, suggesting a strong influence of South Han river water to the Main Han river water.

Keywords oxygen and hydrogen isotopic compositions, stream water, Han river basin, altitude effect, evaporation effect.

    KSEEG
    Apr 30, 2024 Vol.57 No.2, pp. 107~280

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