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Review of Modeling Approaches at the Freshwater and Saltwater interface in Coastal Aquifers

Author

Listed:
  • Mamoon Ismail

    (Department of Geosciences, University of Rhode Island, Kingston, RI 02881, USA)

  • Soni M. Pradhanang

    (Department of Geosciences, University of Rhode Island, Kingston, RI 02881, USA)

  • Thomas Boving

    (Department of Geosciences, University of Rhode Island, Kingston, RI 02881, USA
    Department of Civil and Environmental Engineering, University of Rhode Island, Kingston, RI 02881, USA)

  • Sophia Motta

    (Department of Geosciences, University of Rhode Island, Kingston, RI 02881, USA)

  • Brendan McCarron

    (Kent County Water Authority, West Greenwich, RI 02817, USA)

  • Ashley Volk

    (INSPIRE Environmental, Newport, RI 02840, USA)

Abstract

Around 40% of the world’s population depends on coastal aquifers for freshwater supply but natural and anthropogenic drivers threaten groundwater availability. Of these drivers, saltwater intrusion (SWI) is one of the most critical and is increasingly affecting coastal areas worldwide. Interest in coastal aquifers has significantly increased, as demonstrated by the growing number of publications in which researchers describe various approaches to illuminate the importance of coastal aquifers, specifically with regard to SWI. The state of research and knowledge of the coastal SWI issue has been reviewed herein. The review includes a discussion of select geophysical and field methods and tools which can inform the numerical modeling of coastal aquifers. MODFLOW was identified as the most often used numerical modeling platform. Further, while many research sites, particularly in the United States, were identified where field studies and geophysical methods, mostly geoelectric ones, added important value to the numerical modeling of the SWI process in the coastal zone, in some regions of the world, data scarcity was identified as the main challenge. Overall, numerical modeling, combined with geophysical methods, is a valuable tool for studying SWI and managing coastal water resources.

Suggested Citation

  • Mamoon Ismail & Soni M. Pradhanang & Thomas Boving & Sophia Motta & Brendan McCarron & Ashley Volk, 2024. "Review of Modeling Approaches at the Freshwater and Saltwater interface in Coastal Aquifers," Land, MDPI, vol. 13(8), pages 1-23, August.
    • Handle: RePEc:gam:jlands:v:13:y:2024:i:8:p:1332-:d:1461935
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    References listed on IDEAS

    as
    1. A. Safi & G. Rachid & M. El-Fadel & J. Doummar & M. Abou Najm & I. Alameddine, 2018. "Synergy of climate change and local pressures on saltwater intrusion in coastal urban areas: effective adaptation for policy planning," Water International, Taylor & Francis Journals, vol. 43(2), pages 145-164, February.
    2. Rajib Bhattacharjya & Bithin Datta, 2005. "Optimal Management of Coastal Aquifers Using Linked Simulation Optimization Approach," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 19(3), pages 295-320, June.
    3. Fu-lin Li & Xue-qun Chen & Cai-hong Liu & Yan-qing Lian & Li He, 2018. "Laboratory tests and numerical simulations on the impact of subsurface barriers to saltwater intrusion," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 91(3), pages 1223-1235, April.
    4. Qiaona Guo & Yue Zhao & Zili Hu & Mengjun Li, 2021. "Contamination Transport in the Coastal Unconfined Aquifer under the Influences of Seawater Intrusion and Inland Freshwater Recharge—Laboratory Experiments and Numerical Simulations," IJERPH, MDPI, vol. 18(2), pages 1-14, January.
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