尼日尔半干旱区(Agadez, Niger) Aïr山区Timia河谷冲积含水层的压力计量和水化学动力学

IF 2.6 4区环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL

Journal of The American Water Resources Association Pub Date : 2023-10-29 DOI:10.12691/ajwr-11-4-5

Illias Alhassane, Abdou Babaye Maman Sani, Issa Malan S.Souleymane

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Piezometric and Hydrochemical Dynamics of Alluvial Aquifer in Timia Valley, Aïr Mountains, Semi-Arid Region (Agadez, Niger)

The alluvial aquifer of the Timia valley provide the supply of water to the population, but also the need for irrigation water. This important aquifer is highly dependent on precipitations and sometimes it dries out before the return of rainy season leading to drought. Also, the increase of agricultural activities has led to the deterioration of water quality in places but also to the depletion of this alluvial aquifer. The objective of this study is to contribute to understanding the quantitative and qualitative dynamics of this limited extension aquifer. A methodological approach based on piezometric and hydrochemical methods has revealed that the alluvial aquifer is renewed from the arrival of first floods of Timia valley and the main flow directions that are globally NE-SW. It show too an increase concentration of cations Ca 2+ , Mg 2+ , Na + and stability of K + during the rainy season. However, for anions a low increase of HCO 3-, Cl - , SO 42-and NO 3-during the dry season is observed.

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来源期刊

Journal of The American Water Resources Association 环境科学-地球科学综合

CiteScore

4.10

自引率

12.50%

发文量

100

审稿时长

3 months

期刊介绍： JAWRA seeks to be the preeminent scholarly publication on multidisciplinary water resources issues. JAWRA papers present ideas derived from multiple disciplines woven together to give insight into a critical water issue, or are based primarily upon a single discipline with important applications to other disciplines. Papers often cover the topics of recent AWRA conferences such as riparian ecology, geographic information systems, adaptive management, and water policy. JAWRA authors present work within their disciplinary fields to a broader audience. Our Associate Editors and reviewers reflect this diversity to ensure a knowledgeable and fair review of a broad range of topics. We particularly encourage submissions of papers which impart a ''take home message'' our readers can use.