- Tytuł:
- Identification and evolution of the Turonian aquifer case study: Cretaceous basin of Béchar, southwestern Algeria
- Autorzy:
-
Sadat, Sonia
Mansour, Hamidi
Mekkaoui, Abderrahmane
Merzougui, Touhami - Powiązania:
- https://bibliotekanauki.pl/articles/292277.pdf
- Data publikacji:
- 2020
- Wydawca:
- Instytut Technologiczno-Przyrodniczy
- Tematy:
-
Cretaceous basin
quantitative evolution
hydrodynamics
piezometers
Turonian aquifer - Opis:
- 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.
- Źródło:
-
Journal of Water and Land Development; 2020, 46; 190-199
1429-7426
2083-4535 - Pojawia się w:
- Journal of Water and Land Development
- Dostawca treści:
- Biblioteka Nauki
Artykuł