The Freshwater – saltwater zone dynamics in the sandune barrier, Buenos Aires. Study case: Pinamar

Abstract

Authors

DOI:

https://doi.org/10.59069/24225703ee016

Keywords:

coastal aquifers, electrical conductivity, tide

Abstract

The study of the freshwater-saltwater interface zone (FWSWI) is fundamental for the characterization of coastal aquifers and the evolution of freshwater reserves. In this work we study the factors that condition the dynamics of the IADAS in the locality of Pinamar. To carry out this task, a monitoring borehole was drilled on the coastal front, electrical conductivity (EC) profiling was performed, and continuous pressure, temperature and salinity sensors were installed. Information was collected from the tide gauge located in the town of Santa Teresita, while hydrometeorological data were obtained from a station located in the town of Pinamar. A correlation between high tide events and salinity, water level and temperature values were verified. The response times between the rise of the tide and the increase of the salinity are less than 8 hours, while the interval required to reach equilibrium again takes at least 2 days. Temperature variations are influenced by the prevailing climatic conditions at the time of the rising tide. The analysis of the relationship between storage variation and high tide events allows inferring that, when recharge events occur, there is a greater stability due to the increase of the hydraulic load on the IADAS. The study of IADAS behavior is an effective indicator for resource management.

Author Biographies

  • Maximiliano Fabiano, Centro de Estudios Integrales de la Dinámica Exógena. Universidad Nacional de La Plata. Argentina.

    Graduate in Geology, teacher in the Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata. He is currently working on his doctoral thesis on the interrelationship between phreatic and semi-confined aquifers in the northeast of the Province of Buenos Aires.

  • Samanta Anguiano , Secretary of Landscape and Environment. Pinamar. Argentina

     

     

     

  • Eduardo Kruse, Centro de Estudios Integrales de la Dinámica Exógena. Universidad Nacional de La Plata. Consejo Nacional de Investigaciones Científicas y Técnicas. Argentina.

     

     

References

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Published

2024-04-24

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Original Articles

How to Cite

The Freshwater – saltwater zone dynamics in the sandune barrier, Buenos Aires. Study case: Pinamar: Abstract. (2024). Journal of Engineering Geology and the Environment, 51, e016. https://doi.org/10.59069/24225703ee016