ESTIMATION OF GROUNDWATER RECHARGE IN ARID REGION THROUGH HYDROCHEMISTRY AND ISOTOPE A CASE STUDY KOURIMAT BASIN MOROCCO
Journal Title: Larhyss Journal - Year 2015, Vol 23, Issue 23
Abstract
Morocco is classified as an arid to semi-arid country with a population according to 2013 estimates of 35 million inhabitants and a growth rate of 1,4 %. Efficient use of Morocco’s scarce water is becoming increasingly important as the urban population grows. This study concerns the groundwater recharge in the Kourimat basin and describes a combined methodology for groundwater recharge estimation in Morocco, through the isotopic and hydrochemical approaches. Groundwater samples from Essaouira basin, east Morocco, falls along the Global Meteoric Water Line (GMWL), and below the Local Meteoric Water Line (LMWL), suggesting that the waters have been recharged under a different climatic regime, different from today. Water isotopic composition shows low evaporation of precipitations during infiltration. Depletion in heavy isotopes is the characteristic of mountain rainfalls or of a climate colder and wetter than present at the research area. Carbon-14 activities (30 – 60 pMC) indicate a long residence time. Tritium levels in the groundwater of the Kourimat Basin are below the detection limit (<1.5 TU). Five groundwater samples in South-West of Essaouira city, presents tritium content between 1 and 3 TU.
Authors and Affiliations
EL MOUKHAYAR R. | Laboratory 3GEO-LAB, Department of Geology, Faculty of Science Semlalia Cadi Ayyad University, P.O. Box 2390, Marrakech, Morocco, BAHIR M. | Laboratory 3GEO-LAB, Department of Geology, Faculty of Science Semlalia Cadi Ayyad University, P.O. Box 2390, Marrakech, Morocco, CARREIRA P. | Centro de Ciências e Tecnologias Nucleares, IST/CTN, Universidade de Lisboa, Estrada Nacional nº 10 ao km 139.7, 2696-066 Bobadela LRS, Portugal
Keywords
Related Articles
- EP ID EP15158
- DOI -
- Views 404
- Downloads 14
LE DÉFI ÉNERGÉTIQUE: L’AUTRE ASPECT DE LA PROBLÉMATIQUE DE L’EAU
Water shortage becomes a worrying prospect for humanity, many technical solutions in the world and particularly in the Maghreb countries were brought of which that of desalination. The production, storage, the transfer...
QUANTITATIVE EVALUATION AND HYDROGEOCHEMICAL PROPERTIES OF GROUNDWATERS FROM PRECAMBRIAN ROCKS OF SAN PEDRO AREA (SOUTHWESTERN CÔTE D’IVOIRE)
San Pedro area covers 6,912 km2 at southwestern Côte d’Ivoire. Its rural population returns to use surface waters for domestic and agricultural needs because of many drillings previously established were damaged. Th...
RISQUE D’INONDATIONS DANS LE BASSIN VERSANT DE L’OUED HAMIZ (BAIE D’ALGER)
Le bassin versant de l’oued Hamiz, dans sa partie avale enregistre ces dernières années de fréquente inondation avec de forte amplitude. Ce bassin présente des facteurs physiques naturels de prédisposition à êtr...
CONCEPTION DE MODÈLES STATISTIQUES A VARIABLES HYDROCHIMIQUES POUR LA PRÉDICTION DE LA CONDUCTIVITÉ ÉLECTRIQUE DES EAUX SOUTERRAINES
The study takes place on the regions of N'zi-Iffou-Moronou (ex-N'zi-Comoé), located in East-Central of Ivory Coast with an area of 19,560 km². The objective of this study is to develop statistical models using multip...
ETUDE EXPERIMENTALE DU RESSAUT HYDRAULIQUE DANS UN CANAL TRIANGULAIRE A PAROIS RUGUEUSES
Dans cette tude, l’effet de la rugosit absolue des parois d’un canal triangulaire, angle d’ouverture de 90 et pente horizontal, sur les caractristiques du ressaut hydraulique a t examin. Quatre valeurs de la rugo...