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Multienvironmental tracers in coastal aquifer (Morocco): A window into groundwater mixing and risk to contamination.
Qurtobi, Mohamed; Hssaisoune, Mohammed; Kumar, Umayadoss Saravana; Bouchaou, Lhoussaine.
Afiliación
  • Qurtobi M; Water and Climate Division, National Centre for Nuclear Energy, Sciences and Techniques, Rabat, Morocco.
  • Hssaisoune M; Laboratory of Applied Geology and Geo-Environment, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco.
  • Kumar US; Faculty of Applied Sciences, Ibn Zohr University, Ait Melloul, Morocco.
  • Bouchaou L; Mohammed VI Polytechnic University (UM6P), International Water Research Institute (IWRI), Ben Guerir, Morocco.
Water Environ Res ; 96(2): e10995, 2024 Feb.
Article en En | MEDLINE | ID: mdl-38379123
ABSTRACT
In many coastal areas in Morocco, groundwater (GW) constitutes an important water supply for human activities. Intensive pumping makes GW highly susceptible to contamination, affecting its quality and then human health. This work aims to assess and improve the application of environmental isotopes in exploring the connections between GW recharge and discharge, as well as to identify the direction, age, and speed of GW flow, in the coastal aquifer system of the Akermoud plain. A total of 23 boreholes and wells were sampled during two sampling campaigns in 2017 and 2018, including 11 samples from the shallow aquifer and 12 samples from the deep aquifer. A set of chemical and isotopic tracers (δ18 O, δ2 H, 3 H, δ13 C, 14 C, and 3 He) is used to track water and solute from input to output of the investigated system. Stable isotopes distinguish recharge at different altitudes for the shallow and deep aquifers. Both aquifers reveal consistently low values of 3 H (between 0.3 and 0.9 tritium units) and from 28% to 64% of modern carbon for six boreholes. According to 14 C correction models, GW has ages ranging from 3300 to 11,000 years before present. GW flows from SSE to NNW and discharge along the Atlantic coast of Akermoud plain with a velocity ranging from 0.41 to 1.8 m/year. PRACTITIONER POINTS The use of environmental tracers helps determine the origin of salinity and identify the recharge area. Investigating the MRT of groundwater resources is essential, especially in arid regions. Evaluating the efficiency of isotopic tracing is crucial in assessing the risk of groundwater contamination. The findings provide insights for stakeholders to promote more sustainable groundwater management in coastal areas.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Agua Subterránea Límite: Humans País/Región como asunto: Africa Idioma: En Revista: Water Environ Res Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Marruecos Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Agua Subterránea Límite: Humans País/Región como asunto: Africa Idioma: En Revista: Water Environ Res Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Marruecos Pais de publicación: Estados Unidos