• Determining Groundwater-surface Water Interaction at Coastal Lagoons using Hydrogeochemical Tracers

  • Dong-Hun Kim1·Jung-Yun Lee1·Soo Young Cho1·Hee Sun Moon1·Youn-Young Jung2·Yejin Park3·Yong Hwa Oh3*

  • 1Groundwater Environment Research Center, Climate Change Response Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Republic of Korea
    2Korea Basic Science Institute, Chungbuk 28119, Republic of Korea
    3Department of Convergence Study on the Ocean Science and Technology, Korea Maritime and Ocean University, Busan 49112, Republic of Korea

  • 수리화학적 환경 추적자를 이용한 강원도 석호지역에서의 지하수-지표수 상호작용에 대한 연구

  • 김동훈1·이정윤1·조수영1·문희선1·정윤영2·박예진3·오용화3*

  • 1한국지질자원연구원 기후변화대응연구본부 지하수환경연구센터
    2한국기초과학지원연구원 환경분석연구부
    3한국해양대학교 해양과학기술전문대학원 해양과학기술융합학과

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Groundwater–surface water interaction was evaluated using water quality parameters (temperature and electrical conductivity), distributions of stable water isotopes (δ2H and δ 18O), and Rn-222 in lagoon water, groundwater, and seawater at three coastal lagoons (Songji (SJ), Youngrang (YR), and Sunpo (SP) Lagoon) in South Korea. From the results of composition and distributions of δ2H and δ18O, it was found that groundwater fraction of lagoon water in YR Lagoon (76%) was slightly higher than those of SJ (42%), and SP (63%) Lagoon. Based on Rn-222 mass balance model, groundwater discharge into SJ Lagoon in summer 2020 was estimated to be (3.2±1.1)×103 m3 day-1, which showed a similar or an order of magnitude higher than the results of previous studies conducted in coastal lagoons. This study can provide advanced techniques to evaluate groundwater–surface water interaction in coastal lagoons, wetlands, and lakes, and help to determine the effects of groundwater on coastal ecosystems.


Keywords: Groundwater–surface water interaction, Rn-222 mass balance, Groundwater inflow, Water stable isotope, Coastal lagoon

This Article

  • 2023; 28(2): 1-11

    Published on Apr 30, 2023

  • 10.7857/JSGE.2023.28.2.001
  • Received on Mar 10, 2023
  • Revised on Mar 30, 2023
  • Accepted on Apr 10, 2023

Correspondence to

  • Yong Hwa Oh

  • Department of Convergence Study on the Ocean Science and Technology, Korea Maritime and Ocean University, Busan 49112, Republic of Korea

  • E-mail: yhoh@kmou.ac.kr