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Article

Characteristics of Hydrochemistry and Stable Isotopes in a Karst Region in Samcheok, Republic of Korea

Department of Geology, College of Natural Sciences, Kangwon National University, Chuncheon 24341, Korea
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Academic Editor: Maurizio Barbieri
Water 2021, 13(2), 213; https://doi.org/10.3390/w13020213
Received: 21 December 2020 / Revised: 14 January 2021 / Accepted: 15 January 2021 / Published: 17 January 2021
(This article belongs to the Special Issue Hydrochemical Characteristics of Groundwater)
Karst regions cover approximately 10% of the Korean Peninsula and are highly vulnerable to contamination. In this study, five field surveys were conducted between 2017 and 2019 to examine the monthly and seasonal changes in the hydro-environment of a characteristic karst region in Samchoek, South Korea. During the surveys, a total of 24 surface water samples were collected and analyzed for field water quality parameters, major and minor ions, and stable isotopes. The results indicate that the water quality in the study area is significantly affected by precipitation. Overall, the water was classified as a Ca-Mg-HCO3 type, and correlation analysis of the major ions detected in the water samples indicates that the inflow of nitrate to the surface water originated from agricultural activities in the region. Furthermore, variations caused by climate were verified using the relationships between the various ions. In addition, high precipitation rates during the rainy season cause the active exchange of surface material, which was verified using stable isotope outliers. The results provide a scientific basis for studying the connectivity of water systems in complex karst hydrogeological regions and can aid future sustainable management of water resources in these regions. View Full-Text
Keywords: karst; water quality; correlation analysis; stable isotope karst; water quality; correlation analysis; stable isotope
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MDPI and ACS Style

Jang, J.; Lee, J.-Y.; Kim, H. Characteristics of Hydrochemistry and Stable Isotopes in a Karst Region in Samcheok, Republic of Korea. Water 2021, 13, 213. https://doi.org/10.3390/w13020213

AMA Style

Jang J, Lee J-Y, Kim H. Characteristics of Hydrochemistry and Stable Isotopes in a Karst Region in Samcheok, Republic of Korea. Water. 2021; 13(2):213. https://doi.org/10.3390/w13020213

Chicago/Turabian Style

Jang, Jiwook; Lee, Jin-Yong; Kim, Heejung. 2021. "Characteristics of Hydrochemistry and Stable Isotopes in a Karst Region in Samcheok, Republic of Korea" Water 13, no. 2: 213. https://doi.org/10.3390/w13020213

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