Identification and evolution of the Turonian aquifer case study: Cretaceous basin of Béchar, southwestern Algeria

• Autorzy: Sadat Sonia , Mansour Hamidi , Mekkaoui Abderrahmane , Merzougui Touhami

Identyfikatory

DOI

10.24425/jwld.2020.134213

• Języki publikacji: EN

Abstrakty

EN

Faced with the challenges of sustainable groundwater resource management in the arid zone, the identification of reserves and their monitoring have become vital. This paper aims to identify the Turonian aquifer in the Cretaceous Béchar basin, and calculate its transmissivity, permeability and storage coefficient, as well as its evolution over time. This Turonian aquifer is characterized by marine limestones (gentle dip shelters 45° to the North and 5° to 10° to the South). Pumping tests revealed a transmissivity T of 10^–4 to 10^–2 m²·s^–1, a permeability K of 10^–6 to 10^–4 m·s^–1 and a storage coefficient S of approximately 10^–3. Two piezometric campaigns, carried out between (1976–2018), show a converging and constant flow direction from the North–East to the South–West and from the North–West to the South–East towards the outlet of the basin. Decreased values were observed in the North and South–West borders due to isopiezometric lines. However, this water table is not in a stationary state, it shows seasonal and interannual fluctuations in relation to the variable rainfall and the exploitation rate. In terms of facies, the projection of the two hydrochemical campaigns, during 1976 and 2018 on the Piper diagram, did not show any significant evolution, they are concentrated in the chlorinated and sulphated calcium and magnesium facies.

Słowa kluczowe

EN

Cretaceous basin; quantitative evolution; hydrodynamics; piezometers; Turonian aquifer

• Wydawca: Wydawnictwo ITP
• Czasopismo: Journal of Water and Land Development
• Rocznik: 2020
• Tom: no. 46
• Strony: 190--199
• Opis fizyczny: Bibliogr. 30 poz., rys., tab.

Twórcy

autor

Sadat Sonia

• University Tahri Mohamed Béchar, Faculty of Technology, Energy Laboratory in Arid Zones ENERGARID, BP 417, 08000 Béchar, Algeria

autor

Mansour Hamidi

• University of Oran 2 Mohamed Ben Ahmed, Faculty of Earth and Universe Sciences. BP 1524, Campus Pole Belgaid, Algeria

autor

Mekkaoui Abderrahmane

• University Tahri Mohamed Béchar, Faculty of Technology, Energy Laboratory in Arid Zones ENERGARID, BP 417, 08000 Béchar, Algeria

autor

Merzougui Touhami

• University Tahri Mohamed Béchar, Faculty of Technology, Energy Laboratory in Arid Zones ENERGARID, BP 417, 08000 Béchar, Algeria

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