Contribution à l'étude hydrogéologique des régions de socle de l'Afrique occidentale PDF Download
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Author: Moussa Boukari
Publisher:
ISBN:
Category : Groundwater
Languages : fr
Pages : 73
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Book Description
Author: Moussa Boukari
Publisher:
ISBN:
Category : Groundwater
Languages : fr
Pages : 73
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Book Description
Author: Moussa Boukari
Publisher:
ISBN:
Category :
Languages : fr
Pages : 131
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Book Description
Author: Boureima Ousmane
Publisher:
ISBN:
Category :
Languages : fr
Pages : 123
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Book Description
ETUDE DES RESSOURCES EN EAU DES FORMATIONS CRISTALLINES DU SOCLE DANS LA REGION DE ZINDER. PROPRIETES PHYSICO-CHIMIQUES ET HYDROCHIMIE DES EAUX
Author: Pierre Koch
Publisher:
ISBN:
Category :
Languages : fr
Pages : 304
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Book Description
Author: I. Simmers
Publisher: Springer Science & Business Media
ISBN: 9401577803
Category : Science
Languages : en
Pages : 503
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Book Description
In view of the rapidly expanding urban, industrial and agri cultural water requirements in many areas and the normally associated critical unreliability of surface water supplies in arid and semi-arid zones, groundwater exploration and use is of fundamental importance for logical economic development. Two interrelated facets should be evident in all such groundwater projects : (a) definition of groundwater recharge mechanisms and characteristics for identified geological formations, in order to determine whether exploitation in the long-term involves 'mining' of an es sentially 'fossil' resource or withdrawal from a dynamic supply. A solution to this aspect is essential for development of a re source management policy: (b) determination of recharge variability in time and space to thus enable determination of total aquifer input and to quantify such practical aspects as 'minimum risk' waste disposal locations and artificial recharge potential via (e.g.) devegetation or engi neering works. However, current international developments relating to natural recharge indicate the following 'problems' ; no single comprehensive estimation technique can yet be iden tified from the spectrum of methods available; all are reported to give suspect results.
Author: Segun Adelana
Publisher: CRC Press
ISBN: 0415452732
Category : Science
Languages : en
Pages : 520
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Book Description
Groundwater is Africa’s most precious natural resource, providing reliable water supplies for many people. Further development of groundwater resources is fundamental to increasing access to safe water across the continent to meet coverage targets and reduce poverty. There is also an increasing interest in the use of groundwater for irrigated agriculture as the climate becomes more variable. Sustainable development of the resource is not a trivial task and depends crucially on an understanding of the hydrogeology and people with the skills to make informed decisions on how groundwater can best be developed and managed in a sustainable fashion. Despite these obvious needs, however, little attention has been paid to the systematic gathering of information about groundwater resources in the past few decades, with the result that data are patchy, knowledge is limited and investment is poorly targeted. This book was written to start to bridge the knowledge gap. The 29 chapters are written by a combination of practitioners and researchers mainly from within Africa using experience from recent and ongoing projects. The chapters highlight the complexity and variety of issues surrounding the development and management of groundwater resources across Africa, and provide a snapshot of groundwater research and application in the early 21st century. Chapters range from strategic discussions of the role of groundwater in development and poverty reduction, to case studies on techniques used to develop groundwater, and modelling methods for managing groundwater systems.
Author: Albert Kikietta (auteur d'une thèse de sciences.)
Publisher:
ISBN:
Category :
Languages : fr
Pages : 294
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Author: Jean Roger Patrice Jourda
Publisher:
ISBN:
Category :
Languages : fr
Pages : 319
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Book Description
Lesrésultats des essais de pompages effectués, ainsi que la mesure directe de la perméabilité par essais d'infiltration sur le terrain ont permis de déterminer les caractéristiques hydrodynamiques (T, S et K) de la nappe du continental terminal et des aquifères fissurés du socle métamorphique. L'interprétation de l'évolution des niveaux piézométriques et des cartes piémométriques a permis de mettre en évidence les divers types d'écoulement et les zones d'alimentatin de la nappe du continental terminal du bassin sédimentaire. L'étude hydrochimique a montré que l'acidité de l'eau de la nappe du continental terminal est due à la présence d'ions hydrogène libérés lors d'échanges entre les eaux provenant du socle cristallin et les minéraux contenus dans les assises sédimentaires pauvres en cations.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 1658
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Book Description
Author: J.M. Bertrand
Publisher: Elsevier
ISBN: 1483138267
Category : Science
Languages : en
Pages : 402
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Book Description
Afrique de l'Ouest
