2011 • Ground Water Conference Ground Water 2011 Conference, 24th European Regional Conference of the International Commission on Irrigation and Drainage (ICID)
[en] The Diass horst multilayered aquifer constitutes a complex hydrogeological system. But stable isotopes are illustrated to be powerful tools for clarifying the origin of recharge water, and the groundwater dynamics due to high exploitation of the system. Used with 3H and 14C, data confirms that most of the investigated groundwater are palaeowaters. Pumping has an impact on groundwater flow evidenced by the different water isotope compositions that illustrates the transient conditions of the system. Mixing of old waters and recently recharged (tritiated) waters occurs in some exploited boreholes, indicates lateral flow to the pumping field through the main groundwater flow directions.
Disciplines :
Geological, petroleum & mining engineering
Author, co-author :
Madioune, Diakher Hélène; Cheikh Anta DIOP University Dakar/Senegal > Department of Geology, Faculty of Sciences and Techniques
Faye, Serigne; Cheikh Anta DIOP University Dakar/Senegal > Department of Geology, Faculty of Sciences and Techniques
Dassargues, Alain ; Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Mudry, Jacques; Université de Franche-Comté, Besançon/France > UMR 6249 Chrono-Environnement, interactions et transferts dans la biogéosphère
Maloszewski, Piotr; GSF-Institute of Groundwater Ecology, D-85764, Neuherberg, Germany
Stichler, Willibald; GSF-Institute of Groundwater Ecology, D-85764, Neuherberg, Germany
Pirard, Eric ; Université de Liège - ULiège > Département ArGEnCo > Géoressources minérales & Imagerie géologique
Language :
English
Title :
Use of environmental isotopes to infer flow in the highly exploited aquifer system of the Diass region (Senegal)
Publication date :
14 March 2011
Number of pages :
Poster
Event name :
Ground Water Conference Ground Water 2011 Conference, 24th European Regional Conference of the International Commission on Irrigation and Drainage (ICID)