Carte de la surface piézométrique de la nappe de la craie dans le région du Nord PDF Download

Author: S. Cottez
Publisher:
ISBN:
Category :
Languages : fr
Pages :

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Author: Richard Allen Downing
Publisher: Oxford University Press, USA
ISBN:
Category : Music
Languages : en
Pages : 316

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Book Description
Chalk is the most important source of fresh water in North-West Europe: more than eight million cubic metres of water are pumped daily from the aquifier. This work presents an authoritative survey of the origin, sedimentology, and hydraulic properties of this unique rock, and the chemical characteristics of the water it contains. The factors influencing the flow through the chalk and its role as a hydrocarbon reservoir in the North Sea are reviewed along with the threats that industrial chemicals, fertilizers, and pesticides present to the supply. The long-term implications of pollutants in this vital resource and the continuing ignorance of the factors that control the flow of water through the rock are highlighted.

Author: Edmond Leroux
Publisher:
ISBN:
Category :
Languages : fr
Pages : 8

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Author: Ghislain de Marsily
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 472

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This book attempts to combine two separate themes: a description of one of the links in the chain of the water cycle inside the earth's crust i.e., the subsurface flow; and the quantification of the various types of this flow, obtained by applying the principles of fluid mechanics in porous media. The first part is the more descriptive, and geological of the two. It deals with the concept of water resources, which then leads us on to other links in the cycle: rainfall, infiltration, evaporation: runoff, and surface water resources. The second part is necessary to quantify groundwater resources. It points the way to other applications, such as solutions to civil engineering problems including drainage and compaction; and transport problems in porous media, including aquifer pollution by miscible fluids, multiphase flow of immiscible fluids, and heat transfer in porous media, i.e., geothermal problems. However, the qualitative and the quantitative aspects are not treated separately but combined and blended together, just as geology and hydrology are woven together in hydrogeology.

Author: International Commission on Irrigation and Drainage
Publisher:
ISBN:
Category : Drainage
Languages : en
Pages : 118

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Author: Gérard Dassonville
Publisher:
ISBN:
Category :
Languages : fr
Pages : 18

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Author: Jacqueline Beaujeu-Garnier
Publisher:
ISBN:
Category : Paris (France)
Languages : en
Pages : 972

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Author: International Association of Hydrogeologists
Publisher:
ISBN:
Category : Hydrogeology
Languages : en
Pages : 604

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Author: G.. Bernard
Publisher:
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Category :
Languages : fr
Pages : 23

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Author: Paul Caulier
Publisher:
ISBN:
Category :
Languages : fr
Pages : 312

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Analyse des faciès de la craie à l'aide des diagraphies de résistivité, de la calcimétrie, de la micropaléontologie et des données fournies par des coupes de puits de mines, sondages, forages. L'étude hydrogéologique détermine la répartition des perméabilités en fonction de la distance à la limite de captivité des différentes nappes. Si une nappe existe dans le turonien supérieur-sénonien, l'implantation dans une vallée ou une zone proche de la limite tertiaire-secondaire est recommandée. Si la nappe se situe dans le turonien moyen, le turonien inférieur ou le cénomanien il convient en premier lieu d'implanter le forage dans une zone à résistivité élevée