Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Download Caracterisation Et Modelisation Des Aquiferes De Socle full books in PDF, epub, and Kindle. Read online Caracterisation Et Modelisation Des Aquiferes De Socle ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author : International Association of Hydrological Sciences
Publisher :
ISBN 13 : 9781901502107
Total Pages : 180 pages
Book Rating : 4.5/5 (21 download)
Download or read book Hard Rock Hydrosystems written by International Association of Hydrological Sciences and published by . This book was released on 1997 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Muhammad Salik Javaid
Publisher : BoD – Books on Demand
ISBN 13 : 1838806210
Total Pages : 122 pages
Book Rating : 4.8/5 (388 download)
Download or read book Groundwater Hydrology written by Muhammad Salik Javaid and published by BoD – Books on Demand. This book was released on 2020-03-04 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: The two fields of knowledge “geology” and “hydrology” always go hand in hand, often giving rise to the terms “geohydrology” and “hydrogeology.” The importance of the science of water, commonly called “hydrologic science,” is always complemented by the “science of the interior of the earth.” Whereas hydrology is concerned with the quality and quantity of underground water, its movement, extraction, and recharge, geology talks of the rock matrix and the structure in which this water is contained, stored, and moved around.In recent times, the knowledge of geohydrology or the hydrology of groundwater has gained an impetus many times its original scale; and with that, acquisition, expansion, research, advancement, and dissemination of this knowledge have become more significant. With so many dimensions of geohydrology available for exploration, research, and technological advancement, any work contributing to any dimension of geohydrology and groundwater will find its right place. This compilation of chapters is going to play a very important part in furthering the knowledge of geohydrology and may prove an interesting and useful read for various cross-sections of academia, researchers, engineers, hydrologists, and all categories of water consumers.
Author : T. Aïfa
Publisher : Geological Society of London
ISBN 13 : 1786204894
Total Pages : 357 pages
Book Rating : 4.7/5 (862 download)
Download or read book Mineralization and Sustainable Development in the West African Craton written by T. Aïfa and published by Geological Society of London. This book was released on 2021-07-22 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Special Publication combines results obtained by interdisciplinary groups from numerous academic institutions working on Paleoproterozoic formations to decipher the origins of the main mineralization resources in the West African Craton (WAC) and their impacts on African economic development. Structural, geophysical, sedimentological, stratigraphical, geochemical, petrophysical and mineralogical analyses have been used to highlight the complexities involved in mineralization emplacement and its origin and evolution within the WAC. Fourteen articles contribute to new knowledge in mineral research. They show that the geodynamic evolution of the WAC is complex from one area to another: it involves subduction, collision and obduction during several deformation phases ranging from Birimian (2.3–2.0 Ga) to Pan-African (650–450 Ma) events. Various modelling techniques, when integrated, help in understanding the mechanisms of mineralization emplacement, some of which are still a matter of debate. The challenge for further studies is mitigation for sustainable development that can be appropriately used to minimize such damage.
Author : U. Ofterdinger
Publisher : Geological Society of London
ISBN 13 : 1786204010
Total Pages : 249 pages
Book Rating : 4.7/5 (862 download)
Download or read book Groundwater in Fractured Bedrock Environments: Managing Catchment and Subsurface Resources written by U. Ofterdinger and published by Geological Society of London. This book was released on 2019-07-19 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fractured bedrock aquifers have traditionally been regarded as low-productivity aquifers, with only limited relevance to regional groundwater resources. It is now being increasingly recognised that these complex bedrock aquifers can play an important role in catchment management and subsurface energy systems. At shallow to intermediate depth, fractured bedrock aquifers help to sustain surface water baseflows and groundwater dependent ecosystems, provide local groundwater supplies and impact on contaminant transfers on a catchment scale. At greater depths, understanding the properties and groundwater flow regimes of these complex aquifers can be crucial for the successful installation of subsurface energy and storage systems, such as deep geothermal or Aquifer Thermal Energy Storage systems and natural gas or CO2 storage facilities as well as the exploration of natural resources such as conventional/unconventional oil and gas. In many scenarios, a robust understanding of fractured bedrock aquifers is required to assess the nature and extent of connectivity between such engineered subsurface systems at depth and overlying receptors in the shallow subsurface.
Author : Valérie Chavagnac
Publisher :
ISBN 13 :
Total Pages : 450 pages
Book Rating : 4.5/5 (414 download)
Download or read book Behaviour of the Sm-Nd Isotopic System During Metamorphism written by Valérie Chavagnac and published by . This book was released on 1999 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aims of this Ph.D. Thesis were to decipher whether the use of Nd model ages are reliable constraints for the crustal evolution on Proterozoic migmatized terrane (example of the Limpopo Belt in South Africa) and to examine the consistency between Sm-Nd gamet and V-Pb zircon ages on eclogites (example of the VHPM Dabieshan in Central China). The Central Zone of the Limpopo Belt which is mainly composed of orthogneisses and paragneisses underwent granulite facies metamorphism followed by decompression metamorphic conditions (clockwise P-T loop) at 2.0 Ga. We have performed Sm-Nd and U-Pb work associated with major and trace element analyses on three examples of migmatites generated at 2.0 Ga to study the chemical and isotopic fractionation which may occur during migmatization. Partial melting following the Bt dehydration reaction did lead to different behaviour of Sm-Nd systematics for metagreywacke and metapelite. ln the first case, chemical equilibrium and full Nd isotope exchanges were not reached due to the incrongruent Pl melting and to the effect of accessory mineraIs (Mnz and Ap) on the compositions of the partial melt. Monazite entered the melt in prefarence to apatite, either by dissolution or by entrainment, and its unradiogenic Nd isotope signature dominates the leucosome. The Nd model ages on partial melt are up to 400 Ma older than those on paleosomes. The Nd model ages of these rocks cannot be used in a simple way to cons train the evolution of Southern Africa. ln the second case, incongruent Pl melting influenced the distribution of major, LILE and also REE between the partial melts and the paleosomes. Full Nd isotope exchange was nearly achieved while Pb-Pb systematics were not fully resetted. Incomplete exchange for both Nd and Pb for two leucosomes is also argued. It appears that the accessory minerals were chemically and isotopically equilibrated with the partial melt and the paleosome. The Nd model ages can be used to constrain the crustal growth of the Limpopo Central Zone. Finally, in migmatites formed by metamorphic segregation at subsolidus conditions on orthogneiss, chemical equilibrium and Nd isotope exchange were not reached during migmatization. The distributions of the elements are related to the proportional amounts of each mineraI in the migmatitic components. However, full Pb isotope exchange is reached here as highlighted by a Pb-Pb WR isochron yielding 2.0 Ga. ln addition, the geochemical characteristics combined with REE modelling provided arguments for closed system behaviour of the whole rock during migmatization. The isotopic compositions of the protolith obtained via mass balance calculations can be used to cons train crustal evolution. The UHPM Dabieshan is characterized by the occurrence of coesite and its quartz pseudomorph as inclusions in eclogites of basaltic composition but also of undoubted metasedimentary origin. Sm.-Nd garnet-omphacite-whole rock isochrons on the coesite-bearing eclogites of the Bixiling Complex gave ages at 210 ± 9 to 218 ± 4 Ma which are similar to 218.4 ± 1.8 Ma and 218.4 ± 2.5 Ma ages obtained by V-Pb zircon data. At the Shuanghe locality, Sm-Nd gamet-kyanite-whole rock isochron on a retrogressed eclogite gave an age at 231 ± 35 Ma in line with the U-Pb zircon data at 233 ± 21 Ma (lower intercept in the concordia diagram). ln addition, Ar-Ar and Rb-Sr phengite ages performed on the eclogite host gneisses (Bixilingg locality) yield 198 ± 4 Ma to 212 ± 2 Ma ages, overlapping the previous Sm-Nd and V-Pb zircon ages on the coesite-bearing eclogites. Consequently, the Sm-Nd garnet dating provide ages in agreement with V-Pb zircon ages and the quartzo-feldspathic gneisses underwent an event coeval to VHP on eclogites. Nd isotope equilibration at the VHP metamorphism appears to have been complete
Author : Sam Stuart
Publisher : Elsevier
ISBN 13 : 1483189171
Total Pages : 528 pages
Book Rating : 4.4/5 (831 download)
Download or read book Selected Water Problems in Islands and Coastal Areas written by Sam Stuart and published by Elsevier. This book was released on 2013-10-22 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Selected Water Problems in Islands and Coastal Areas serves as a guideline for implementing, at the policy and decision-making level, the rational and economic use of water resources. This book focuses on groundwater management and the possible utilization of desalination facilities, specifically in arid or semi-arid coastal areas. Organized into five parts encompassing 63 chapters, this book begins with an overview of the forecasts of water supply requirements. This text then explores the necessary regulations of both surface and groundwater in coastal areas and islands with limited water resources. Other chapters consider the curative measures in the case of recurring salination by using artificial or increased natural infiltration. This book discusses as well the techniques to be used for artificial infiltration into aquifers using deep wells to avoid clogging. The final chapter deals with the problems of communal installations, water supply, drainage and waste disposal. This book is a valuable resource for engineers.
Author : Jacob Bear
Publisher : Academic Press
ISBN 13 : 0080916473
Total Pages : 575 pages
Book Rating : 4.0/5 (89 download)
Download or read book Flow and Contaminant Transport in Fractured Rock written by Jacob Bear and published by Academic Press. This book was released on 2012-12-02 with total page 575 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past two or three decades, fractured rock domains have received increasing attention not only in reservoir engineering and hydrology, but also in connection with geological isolation of radioactive waste. Locations in both the saturated and unsaturated zones have been under consideration because such repositories are sources of heat and potential sources of groundwater contamination. Thus, in addition to the transport of mass of fluid phases in single and multiphase flow, the issues of heat transport and mass transport of components have to be addressed.
Author : Dimitri Lague
Publisher :
ISBN 13 :
Total Pages : 180 pages
Book Rating : 4.F/5 ( download)
Download or read book Dynamique de l'érosion continentale aux grandes échelles de temps et d'espace written by Dimitri Lague and published by . This book was released on 2003 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'évolution à long terme des reliefs continentaux résulte de couplages complexes entre processus d'érosion et mouvements tectoniques qui tendent à s'équilibrer pour atteindre éventuellement un état stationnaire. La partie érosion de ces couplages est gouvernée par l'interaction entre des processus élémentaires de versant et de rivière, étroitement couplés, qui contrôlent l'organisation spatiale du réseau de drainage. Ces processus sont caractérisés par des vitesses d'érosion et de transport lentes sur les versants et très rapides dans les rivières, et dépendent souvent non-linéairement de la pente topographique et du flux d'eau. Il en résulte une dynamique complexe à l'échelle locale dont les conséquences à l'échelle continentale sur la vitesse et les volumes de matière transportés ne sont pas encore comprises. L'objectif de cette thèse a été de comprendre et modéliser cette dynamique à l'échelle des temps géologiques, dans le cadre de perturbations tectoniques simples, et pour des conditions climatiques constantes. Nous utilisons un modèle numérique permettant de simuler l'interaction de différents processus d'érosion de versant et de transport fluvial. Les solutions hors équilibre prédites par ce modèle ne pouvant être validées analytiquement ou à partir de données naturelles, une approche expérimentale inédite a été développée. Elle permet d'étudier précisément l'évolution d'une topographie soumise à l'action simultanée d'une surrection simple et de processus d'érosion et de transport par ruissellement. Au cours d'une expérience, la surface s'auto organise d'abord en une série de bassins versants de géométrie similaire aux systèmes naturels, puis l'altitude moyenne du système s'approche quasi-exponentiellement d'une valeur constante, traduisant un état d'équilibre macroscopique. L'analyse couplée des expériences et des simulations numériques montre que cette dynamique dépend fortement de la présence de zones de drainage internes non-connectées aux conditions limites du système, du degré de non-linéarité entre érosion et pente topographique et de l'existence d'un seuil d'érosion. A partir de l'analyse de systèmes naturels, via le formalisme de la relation pente-aire drainée, nous mettons en évidence l'existence d'un tel seuil dans les systèmes naturels. Pour ce faire nous avons développé un nouveau critère morphologique permettant de caractériser l'état dynamique des reliefs naturels. L'hypothèse d'équilibre dynamique entre érosion et tectonique, nécessaire à l'interprétation correcte des relations entre formes topographiques et processus d'érosion, peut être ainsi (in)validée. Ces résultats suggèrent que le seuil d'érosion habituellement négligé dans le calibrage des lois d'érosion élémentaires doit être explicitement pris en compte pour prédire correctement les formes topographiques naturelles, la dynamique de la croissance des réseaux de drainage et les relations à l'échelle continentale entre taux de dénudation et paramètres topographiques.
Author : Shakeel Ahmed
Publisher : Springer Science & Business Media
ISBN 13 : 140206540X
Total Pages : 265 pages
Book Rating : 4.4/5 (2 download)
Download or read book Groundwater Dynamics in Hard Rock Aquifers written by Shakeel Ahmed and published by Springer Science & Business Media. This book was released on 2008-11-18 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the results and findings of the advanced research carried out in a pilot area with a thorough investigation of the structure and functioning of an aquifer in a granitic formation. It characterizes the hard rock aquifer system and examines its properties and behavior as well as systematically details the geophysical, geological and remote sensing applications to conceptualize such an aquifer system.
Author :
Publisher :
ISBN 13 :
Total Pages : 728 pages
Book Rating : 4.3/5 (243 download)
Download or read book Principal scientific and technical results written by and published by . This book was released on 1988 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Segun Adelana
Publisher : CRC Press
ISBN 13 : 0203889495
Total Pages : 518 pages
Book Rating : 4.2/5 (38 download)
Download or read book Applied Groundwater Studies in Africa written by Segun Adelana and published by CRC Press. This book was released on 2008-09-23 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Author : United Nations. Economic Commission for Europe. Committee on Water Problems
Publisher : Pergamon
ISBN 13 :
Total Pages : 536 pages
Book Rating : 4.3/5 (5 download)
Download or read book Selected Water Problems in Islands and Coastal Areas written by United Nations. Economic Commission for Europe. Committee on Water Problems and published by Pergamon. This book was released on 1979 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 1014 pages
Book Rating : 4.E/5 ( download)
Download or read book Agrindex written by and published by . This book was released on 1994 with total page 1014 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Institut national de recherche en informatique et en automatique (France)
Publisher :
ISBN 13 :
Total Pages : 168 pages
Book Rating : 4.F/5 ( download)
Download or read book Colloque Modélisation du sous-sol written by Institut national de recherche en informatique et en automatique (France) and published by . This book was released on 1997 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard Webster
Publisher : John Wiley & Sons
ISBN 13 : 9780470517260
Total Pages : 330 pages
Book Rating : 4.5/5 (172 download)
Download or read book Geostatistics for Environmental Scientists written by Richard Webster and published by John Wiley & Sons. This book was released on 2007-10-22 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geostatistics is essential for environmental scientists. Weather and climate vary from place to place, soil varies at every scale at which it is examined, and even man-made attributes – such as the distribution of pollution – vary. The techniques used in geostatistics are ideally suited to the needs of environmental scientists, who use them to make the best of sparse data for prediction, and top plan future surveys when resources are limited. Geostatistical technology has advanced much in the last few years and many of these developments are being incorporated into the practitioner’s repertoire. This second edition describes these techniques for environmental scientists. Topics such as stochastic simulation, sampling, data screening, spatial covariances, the variogram and its modeling, and spatial prediction by kriging are described in rich detail. At each stage the underlying theory is fully explained, and the rationale behind the choices given, allowing the reader to appreciate the assumptions and constraints involved.
Author : França. Bureau de recherches géologiques et minières
Publisher :
ISBN 13 : 9782715909168
Total Pages : 168 pages
Book Rating : 4.9/5 (91 download)
Download or read book Principaux résultats scientifiques et techniques 1999 written by França. Bureau de recherches géologiques et minières and published by . This book was released on 2001 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : France. Bureau de recherches géologiques et minières
Publisher :
ISBN 13 : 9782715905153
Total Pages : 396 pages
Book Rating : 4.9/5 (51 download)
Download or read book Principal scientific and technical results written by France. Bureau de recherches géologiques et minières and published by . This book was released on 1991 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
