Impacts of pumping on the spatiotemporal dynamics of a fresh-saline water mixing zone in a coastal lagoon-aquifer system
Study region: The Songjiho coastal lagoon, located in the Gangwon Province, Korea, has a unique geographic setting surrounded by mountains and the ocean. Its distinctive hydrological configuration consists of two smaller sub-lakes interconnected by a narrow channel. Its hydrodynamics is significantl...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-02-01
|
| Series: | Journal of Hydrology: Regional Studies |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581824000053 |
| _version_ | 1797342160812507136 |
|---|---|
| author | Woo-Hyun Jeon Soo-Hyoung Lee Hee Sun Moon Yongcheol Kim Sun Woo Chang Seho Hwang |
| author_facet | Woo-Hyun Jeon Soo-Hyoung Lee Hee Sun Moon Yongcheol Kim Sun Woo Chang Seho Hwang |
| author_sort | Woo-Hyun Jeon |
| collection | DOAJ |
| description | Study region: The Songjiho coastal lagoon, located in the Gangwon Province, Korea, has a unique geographic setting surrounded by mountains and the ocean. Its distinctive hydrological configuration consists of two smaller sub-lakes interconnected by a narrow channel. Its hydrodynamics is significantly influenced by an inlet and outlet, which are connected to the inflowing stream and tidal current, respectively. Study focus: We examined the effect of pumping on the spatiotemporal dynamics of the fresh-saline water mixing zone (FSM) to gain insights into the underlying response mechanisms by pumping. We conducted a series of systematic pumping tests at three fully screened wells installed in the lagoon-aquifer. We monitored electrical conductivity and water temperature with depth. Additionally, we collected and analyzed comprehensive sets of relevant hydrogeological field data. New hydrological insights for the region: Our investigation has pinpointed the dispersion resulting from the concentration gradient as a primary governing factor of the behavior of the FSM. Furthermore, the results also underscore the crucial relationship between the permeability of the layers and the mixing process, which is affected by the inherent heterogeneities in the geological structure and hydraulic properties of the aquifer. In light of these findings, we propose a conceptual model that comprehensively represents the spatiotemporal variations of the coastal lagoon-aquifer system. The model will serve as a valuable tool for understanding and predicting the complex interplay of factors that influence the behavior of this complex hydrogeological system. |
| first_indexed | 2024-03-08T10:29:19Z |
| format | Article |
| id | doaj.art-4767ab2a01da4d5493cabaed1473bdc8 |
| institution | Directory Open Access Journal |
| issn | 2214-5818 |
| language | English |
| last_indexed | 2024-03-08T10:29:19Z |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj.art-4767ab2a01da4d5493cabaed1473bdc82024-01-27T06:55:08ZengElsevierJournal of Hydrology: Regional Studies2214-58182024-02-0151101657Impacts of pumping on the spatiotemporal dynamics of a fresh-saline water mixing zone in a coastal lagoon-aquifer systemWoo-Hyun Jeon0Soo-Hyoung Lee1Hee Sun Moon2Yongcheol Kim3Sun Woo Chang4Seho Hwang5Groundwater Environment Research Center, Climate Change Response Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Republic of KoreaGroundwater Environment Research Center, Climate Change Response Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Republic of KoreaGroundwater Environment Research Center, Climate Change Response Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Republic of Korea; Corresponding author.Groundwater Environment Research Center, Climate Change Response Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Republic of KoreaDepartment of Hydro Science and Engineering Research, Korea Institute of Civil Engineering and Building Technology, Gyeonggi 10223, Republic of KoreaGroundwater Environment Research Center, Climate Change Response Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Republic of KoreaStudy region: The Songjiho coastal lagoon, located in the Gangwon Province, Korea, has a unique geographic setting surrounded by mountains and the ocean. Its distinctive hydrological configuration consists of two smaller sub-lakes interconnected by a narrow channel. Its hydrodynamics is significantly influenced by an inlet and outlet, which are connected to the inflowing stream and tidal current, respectively. Study focus: We examined the effect of pumping on the spatiotemporal dynamics of the fresh-saline water mixing zone (FSM) to gain insights into the underlying response mechanisms by pumping. We conducted a series of systematic pumping tests at three fully screened wells installed in the lagoon-aquifer. We monitored electrical conductivity and water temperature with depth. Additionally, we collected and analyzed comprehensive sets of relevant hydrogeological field data. New hydrological insights for the region: Our investigation has pinpointed the dispersion resulting from the concentration gradient as a primary governing factor of the behavior of the FSM. Furthermore, the results also underscore the crucial relationship between the permeability of the layers and the mixing process, which is affected by the inherent heterogeneities in the geological structure and hydraulic properties of the aquifer. In light of these findings, we propose a conceptual model that comprehensively represents the spatiotemporal variations of the coastal lagoon-aquifer system. The model will serve as a valuable tool for understanding and predicting the complex interplay of factors that influence the behavior of this complex hydrogeological system.http://www.sciencedirect.com/science/article/pii/S2214581824000053Fresh-saline water interfacePumping testMixing processHydrogeologic characterizationElectrical conductivityCoastal aquifer |
| spellingShingle | Woo-Hyun Jeon Soo-Hyoung Lee Hee Sun Moon Yongcheol Kim Sun Woo Chang Seho Hwang Impacts of pumping on the spatiotemporal dynamics of a fresh-saline water mixing zone in a coastal lagoon-aquifer system Journal of Hydrology: Regional Studies Fresh-saline water interface Pumping test Mixing process Hydrogeologic characterization Electrical conductivity Coastal aquifer |
| title | Impacts of pumping on the spatiotemporal dynamics of a fresh-saline water mixing zone in a coastal lagoon-aquifer system |
| title_full | Impacts of pumping on the spatiotemporal dynamics of a fresh-saline water mixing zone in a coastal lagoon-aquifer system |
| title_fullStr | Impacts of pumping on the spatiotemporal dynamics of a fresh-saline water mixing zone in a coastal lagoon-aquifer system |
| title_full_unstemmed | Impacts of pumping on the spatiotemporal dynamics of a fresh-saline water mixing zone in a coastal lagoon-aquifer system |
| title_short | Impacts of pumping on the spatiotemporal dynamics of a fresh-saline water mixing zone in a coastal lagoon-aquifer system |
| title_sort | impacts of pumping on the spatiotemporal dynamics of a fresh saline water mixing zone in a coastal lagoon aquifer system |
| topic | Fresh-saline water interface Pumping test Mixing process Hydrogeologic characterization Electrical conductivity Coastal aquifer |
| url | http://www.sciencedirect.com/science/article/pii/S2214581824000053 |
| work_keys_str_mv | AT woohyunjeon impactsofpumpingonthespatiotemporaldynamicsofafreshsalinewatermixingzoneinacoastallagoonaquifersystem AT soohyounglee impactsofpumpingonthespatiotemporaldynamicsofafreshsalinewatermixingzoneinacoastallagoonaquifersystem AT heesunmoon impactsofpumpingonthespatiotemporaldynamicsofafreshsalinewatermixingzoneinacoastallagoonaquifersystem AT yongcheolkim impactsofpumpingonthespatiotemporaldynamicsofafreshsalinewatermixingzoneinacoastallagoonaquifersystem AT sunwoochang impactsofpumpingonthespatiotemporaldynamicsofafreshsalinewatermixingzoneinacoastallagoonaquifersystem AT sehohwang impactsofpumpingonthespatiotemporaldynamicsofafreshsalinewatermixingzoneinacoastallagoonaquifersystem |