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Author : Françoise Gasse
Publisher : IRD Orstom
ISBN 13 :
Total Pages : 324 pages
Book Rating : 4.:/5 (31 download)
Download or read book Hydrologie et géochimie isotopique written by Françoise Gasse and published by IRD Orstom. This book was released on 1998 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Christiane Causse
Publisher :
ISBN 13 :
Total Pages : 305 pages
Book Rating : 4.:/5 (129 download)
Download or read book Hydrologie et geochimie isotopique written by Christiane Causse and published by . This book was released on 1998 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : MOHAMEDFAHMY.. HUSSEIN
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (49 download)
Download or read book HYDROCHIMIE, GEOCHIMIE ET GEOCHIMIE ISOTOPIQUE ET EVOLUTION DES SOLS SALES DU DELTA DU NIL written by MOHAMEDFAHMY.. HUSSEIN and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 1. LE SYSTEME COMPLEXE DU (SOL/EAU DU SOL/EAU DE SURFACE/EAU SOUTERRAINES/CHARGE SALINE) DANS UNE REGION ARIDE A SEMI-ARIDE AVEC DES CONDITIONS PARTICULIERES (ICI, LE DELTA DU NIL ET LE BASSIN DESERTIQUE FERME DE WADI NATRON, BASSE EGYPTE) A ETE ANALYSE COMME UN CAS DE L'EVOLUTION DE LA SALINITE A PHASES MULTIPLES. 2. LA COMPLEXITE DU SYSTEME ETUDIE NOUS A IMPOSE L'EMPLOIS DES METHODES PLURI-DISCIPLINAIRES DES DIVERS DOMAINES AUSSI VARIES QUE L'HYDROLOGIE, L'HYDROCHIMIE, LES ISOTOPES DU MILIEU, LA GEOCHIMIE, LA MINERALOGIE ET LA PHYSIQUE DES SOLS. 3. LES METHODES D'ANALYSES UTILISES ONT ETE PRINCIPALEMENT LES SUIVANTS: A) LA MODELISATION DE L'EQUILIBRE THERMODYNAMIQUE DES SOLUTIONS AQUEUSES/MINERAUX (AVEC UN INTERET PARTICULIER A LA STIMULATION DE L'EVAPORATION ET DE LA DISSOLUTION DANS LES PROCESSUS CHIMIQUES DE LA CROISSANCE DE LA SALINITE, L'ALCALINITE ET L'ETUDE DES SAUMURES ALCALINES ET MARINES). B) LES ISOTOPES STABLES DE MILIEU (NOTAMMENT: #1#8O, #2H, #1#3C, ET #3#4S), NOUS ONT PERMIS D'ELABORER ET DES TESTER DES MODELES CONCEPTUELS ET DES MECANISMES DOMINANTS DANS LES ZONES NON-SATURE ET SATURE EN EAU DANS LA REGION ETUDIEE (EN RELATION AVEC LA GENESE DE LA SALINITE, LA PRECIPITATION DES PHASES SOLIDES CARBONATEES ET SULFATEES DANS LE SOL, LE MELANGE DES EAUX ET L'EVAPORATION A PARTIR DES LACS, DES MAREES ET DES SAUMURES). C) LES ISOTOPES RADIO-ACTIVES DE MILIEU (NOTAMMENT: #3H, #1#4C), NOUS ONT PERMIS L'UTILISATION DES MODELES CONCEPTUELS DES RELATIONS: EAU DE SURFACE/NAPPE PHREATIQUE/NAPPE PROFONDE ET DES MECANISMES DOMINANTS DANS RECHARGE DE L'AQUIFERE ET LA VITESSE DE L'ECOULEMENT. D) LA MODELISATION ISOTOPIQUE DES PROCESSUS PHYSIQUES ET DE PHENOMENES DE FLUX MULTI-PHASE DE L'EAU DU SOL ASSOCIES A L'ACQUISITION DE LA SALINITE (EVAPORATION). CETTE ETUDE (QUI EST D'EXTREME UTILITE DANS LE CALCUL DU BUDGET EN EAU DANS LES ZONES SEMI-ARIDE ET ARIDE) NOUS A PERMIS DES ESTIMATIONS PRECISES DE L'EVAPORATION A PARTIR DES SOLS NON-CULTIVES A NAPPES PEU PROFONDES). E) L'IDENTIFICATION MINERALOGIQUE D'ASSEMBLAGES DES SELS PRECIPITES AINSI QUE DE LA FRACTION ARGILEUSE, QUE NOUS OFFRE LE TEMOIGNAGE SUR LA GENESE ET LE DEVELOPPEMENT REEL DE LA COMPOSITION IONIQUE DE LA CHARGE SALINE ET L'ALTERATION DES ARGILES EN MILIEU CONCENTRE. 4. L'ASPECT PARTICULIER DE L'UTILISATION DES ETUDES PLURI-DISCIPLINAIRES A ETE ILLUSTRE CAR IL NOUS A PERMIS DE DEGAGER LES CONFIGURATIONS CONCEPTUELLES ET LES PARTICIPATIONS DES ELEMENTS MULTIPLES QUI INTERVIENNENT DANS LE SYSTEME COMPLIQUE DU SOL/EAU/SOLUTES. IL A ETE DEMONTRE QUE CES INVESTIGATIONS CONCEPTUELLES ET ANALYTIQUES N'ONT PAS SEULEMENT DES RETOMBEES ACADEMIQUES MAIS SURTOUT DES APPLICATIONS POSSIBLES DANS L'IMMEDIAT DANS LA GESTION DES RESSOURCES EN EAU DANS LES DOMAINES CIVIL ET AGRICOLE DES ZONES ARIDE ET SEMI-ARIDE (OU LA SALINITE DES EAUX ET DES SOLS ET L'USAGE ECONOMIQUE DE L'EAU DANS L'IRRIGATION SONT DEUX FACTEURS TRES CRITIQUES)
Author : V.I. Ferronsky
Publisher : Springer Science & Business Media
ISBN 13 : 9400728557
Total Pages : 626 pages
Book Rating : 4.4/5 (7 download)
Download or read book Isotopes of the Earth's Hydrosphere written by V.I. Ferronsky and published by Springer Science & Business Media. This book was released on 2012-03-14 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the distribution, hydrochemistry and geophysics of the naturally occurring stable isotopes namely: hydrogen, oxygen and radioactive tritium, carbon and other cosmogenic and radiogenic isotopes of the uranium-thorium series, in the oceans and in atmosphere, the earth's surface and ground water. The use of environmental isotopes in the three main areas of natural waters is discussed: origin, dynamics and residence time in natural reservoirs. The origin of the hydrosphere is examined in the light of isotopic, new cosmochemical and recent theoretical results. The book will be of interest to scientists and researchers who use environmental isotopes in solving scientific and practical problems in hydrology, hydrogeology, oceanography, meteorology, hydrogeochemistry and cosmochemistry. Lecturers, students and postgraduates in these fields will also find it useful.
Author : Ian D. Clark
Publisher : CRC Press
ISBN 13 : 1482242915
Total Pages : 343 pages
Book Rating : 4.4/5 (822 download)
Download or read book Environmental Isotopes in Hydrogeology written by Ian D. Clark and published by CRC Press. This book was released on 2013-11-20 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: Groundwater is an increasingly important resource to human populations around the world, and the study and protection of groundwater is an essential part of hydrogeology - the subset of hydrology that concentrates on the subsurface. Environmental isotopes, naturally occurring nuclides in water and solutes, have become fundamental tools for tracing
Author : Pradeep K. Aggarwal
Publisher : Springer Science & Business Media
ISBN 13 : 9781402066719
Total Pages : 404 pages
Book Rating : 4.0/5 (667 download)
Download or read book Isotopes in the Water Cycle written by Pradeep K. Aggarwal and published by Springer Science & Business Media. This book was released on 2007-08-31 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental isotope and nuclear techniques provide unmatched insights into the processes governing the water cycle and its variability. This monograph presents state of the art applications and new developments of isotopes in hydrology, environmental disciplines and climate change studies. Coverage ranges from the assessment of groundwater resources in terms of recharge and flow regime to studies of the past and present global environmental and climate changes.
Author : Martin Mbonu
Publisher :
ISBN 13 :
Total Pages : 171 pages
Book Rating : 4.:/5 (49 download)
Download or read book Hydrogéologie, hydrochimie et géochimie isotopique des aquifères de socle du plateau de Jos et des plaines environnantes (Nigeria) written by Martin Mbonu and published by . This book was released on 1991 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: La région étudiée appartient à l'ensemble du socle précambrien nigéro-nigérien, recoupe dans la zone du plateau de Jos par les corps granitiques d'âge jurassique et des venues volcaniques datées du tertiaire au quaternaire. En s'appuyant essentiellement sur des approches statistiques, hydrochimiques et isotopiques, ce travail vise à l'amélioration de la connaissance des systèmes aquifères de socle sur cette zone. L'analyse statistique multivariable appliquée aux paramètres hydrogéologiques des forages permet de mettre en évidence le rôle défavorable d'une épaisseur trop importante de formations altéritiques vis-a-vis de la productivité des forages. Les eaux exploitées sont dans leur grande majorité faiblement mineralisées et de type bicarbonate calcique et sodique. L'étude détaillée de l'interaction chimique eau-roche réservoir associée à l'utilisation de traitement statistiques multivariables permet de bien distinguer les deux principales origines de la minéralisation de l'eau ; l'hydrolyse des silicates et les apports depuis la surface (météorique ou anthropique). L'étude des isotopes stables sur les précipitations et les eaux souterraines permet de préciser le rôle prédominant des pluies non evaporées des mois de juin et de juillet dans la recharge des nappes. Paradoxalement les pluies plus abondantes du mois d'août semblent n'y contribuer que partiellement. Enfin, les activités en tritium et en carbone 14 confirment le cloisonnement des aquifères dans lesquels on rencontre des eaux récentes impliquant une réserve fragile et des eaux plus anciennes constituant une réserve mal définie
Author : F.J. Pearson
Publisher : Elsevier
ISBN 13 : 0080875025
Total Pages : 487 pages
Book Rating : 4.0/5 (88 download)
Download or read book Applied Isotope Hydrogeology written by F.J. Pearson and published by Elsevier. This book was released on 1991-04-16 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1980, Nagra, the Swiss National Cooperative for the Storage of Radioactive Waste, began a comprehensive field investigation programme to assess the feasibility and safety of a repository for the final disposal of high-level radioactive waste in northern Switzerland. An international team of scientists has carried out a comprehensive study on the isotope hydrogeology of deep groundwaters. One of the major implications of this work pertains to the storage of radioactive waste. The study goes far beyond an in-depth regional study as it draws together the results of diverse techniques, many of which have been re-evaluated or further developed. This book presents in great detail the results of one of the most comprehensive isotope hydrology studies ever undertaken.
Author : Willem Gerrit Mook
Publisher : Taylor & Francis Group
ISBN 13 :
Total Pages : 264 pages
Book Rating : 4.3/5 (91 download)
Download or read book Introduction to Isotope Hydrology written by Willem Gerrit Mook and published by Taylor & Francis Group. This book was released on 2006 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication presents, in a simple, but scientifically rigorous manner, the consequences of natural processes to stable isotope concentrations and radioactivities, and discusses the implications of these processes.
Author : RENAUD.. MATHIEU
Publisher :
ISBN 13 :
Total Pages : 272 pages
Book Rating : 4.:/5 (49 download)
Download or read book APPORTS DE LA GEOCHIMIE ISOTOPIQUE (2H ET 180) A L'ETUDE DES MOUVEMENTS DE L'EAU DANS LES SOLS ARGILEUX. MODELISATION, ETUDE EXPERIMENTALE ET APPLICATION AU MILIEU NATUREL (BURKINA FASO) written by RENAUD.. MATHIEU and published by . This book was released on 1993 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: APRES UNE PRESENTATION DE LA THEORIE DES MOUVEMENTS EN EAU ET ISOTOPES STABLES (2H ET 180) DANS LES SOLS ET DE SES APPLICATIONS, EST PROPOSE LE MODELE NUMERIQUE MOISE DESTINE A LA SIMULATION DE L'EVOLUTION DES TENEURS EN EAU ET ISOTOPES EN REGIME EVAPORATOIRE PERMANENT OU TRANSITOIRE. LE MODELE A ETE CONFRONTE DE FACON SATISFAISANTE AVEC LES SOLUTIONS ANALYTIQUES DE BARNES ET ALLISON, DEVELOPPEES POUR DES CONDITIONS STATIONNAIRES, PUIS APPLIQUE A LA SIMULATION DES RESULTATS D'UNE ETUDE EXPERIMENTALE DE L'EVAPORATION EN REGIME TRANSITOIRE MENEE SUR DES COLONNES DE SOL ARGILEUX NATUREL. UNE ETUDE ISOTOPIQUE ET HYDROGEOLOGIQUE DES EAUX DE PLUIES, DU SOL ET DE L'AQUIFERE A ETE MENEE SUR UN PETIT BASSIN VERSANT AU BURKINA FASO EN 1988 ET 1989. L'EVOLUTION HYDRIQUE ET ISOTOPIQUE DANS LE SOL AU COURS DES SAISONS HUMIDES A PERMIS DE DISTINGUER UN MODE D'INFILTRATION DIFFUSE ET UN MODE D'INFILTRATION RAPIDE PAR UN SYSTEME CONDUCTEUR MACROPORAL. L'EVOLUTION DANS L'AQUIFERE APPARAIT EGALEMENT RELEVER DE DEUX MODES D'ALIMENTATION: DIFFUSE PAR LES ALTERITES ET RAPIDE PAR LA FISSURATION. LES RESULTATS ISOTOPIQUES OBTENUS AU LABORATOIRE ET EN MILIEU NATUREL ONT ETE INTERPRETES EN FAISANT A PLUSIEURS REPRISES L'HYPOTHESE DE L'EXISTENCE DE DIFFERENTS DOMAINES D'EAUX CARACTERISES PAR LA SPECIFICITE DE LEURS PROPRIETES HYDRODYNAMIQUES ET ISOTOPIQUES, EN RELATION AVEC LES PROPRIETES TEXTURALES ET STRUCTURALES PARTICULIERES DES SOLS ARGILEUX
Author : R.E. Zeebe
Publisher : Elsevier
ISBN 13 : 0080529224
Total Pages : 361 pages
Book Rating : 4.0/5 (85 download)
Download or read book CO2 in Seawater: Equilibrium, Kinetics, Isotopes written by R.E. Zeebe and published by Elsevier. This book was released on 2001-10-15 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon dioxide is the most important greenhouse gas after water vapor in the atmosphere of the earth. More than 98% of the carbon of the atmosphere-ocean system is stored in the oceans as dissolved inorganic carbon. The key for understanding critical processes of the marine carbon cycle is a sound knowledge of the seawater carbonate chemistry, including equilibrium and nonequilibrium properties as well as stable isotope fractionation. Presenting the first coherent text describing equilibrium and nonequilibrium properties and stable isotope fractionation among the elements of the carbonate system. This volume presents an overview and a synthesis of these subjects which should be useful for graduate students and researchers in various fields such as biogeochemistry, chemical oceanography, paleoceanography, marine biology, marine chemistry, marine geology, and others. The volume includes an introduction to the equilibrium properties of the carbonate system in which basic concepts such as equilibrium constants, alkalinity, pH scales, and buffering are discussed. It also deals with the nonequilibrium properties of the seawater carbonate chemistry. Whereas principle of chemical kinetics are recapitulated, reaction rates and relaxation times of the carbonate system are considered in details. The book also provides a general introduction to stable isotope fractionation and describes the partitioning of carbon, oxygen, and boron isotopes between the species of the carbonate system. The appendix contains formulas for the equilibrium constants of the carbonate system, mathematical expressions to calculate carbonate system parameters, answers to exercises and more.
Author : Hans Eggenkamp
Publisher : Springer
ISBN 13 : 3642285066
Total Pages : 174 pages
Book Rating : 4.6/5 (422 download)
Download or read book The Geochemistry of Stable Chlorine and Bromine Isotopes written by Hans Eggenkamp and published by Springer. This book was released on 2014-08-25 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides detailed information on the history, analysis and applications of chlorine and bromine isotope geochemistry. Chlorine and bromine are geochemically unique as they prefer to exist as single charged negative ions. For this reason isotope fractionation reflects mostly processes that are not related to changes in the redox state and this fractionation is generally modest. The book will describe the processes that are most easily detected using these isotopes. Also isotope variations, and processes that cause them, measured in oxidised species such as perchlorates and in organic molecules will be described in this book.
Author : C. Kendall
Publisher : Elsevier
ISBN 13 : 008092915X
Total Pages : 870 pages
Book Rating : 4.0/5 (89 download)
Download or read book Isotope Tracers in Catchment Hydrology written by C. Kendall and published by Elsevier. This book was released on 2012-12-02 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book represents a new "earth systems" approach to catchments that encompasses the physical and biogeochemical interactions that control the hydrology and biogeochemistry of the system. The text provides a comprehensive treatment of the fundamentals of catchment hydrology, principles of isotope geochemistry, and the isotope variability in the hydrologic cycle -- but the main focus of the book is on case studies in isotope hydrology and isotope geochemistry that explore the applications of isotope techniques for investigating modern environmental problems. Isotope Tracers in Catchment Hydrology is the first synthesis of physical hydrology and isotope geochemistry with catchment focus, and is a valuable reference for professionals and students alike in the fields of hydrology, hydrochemistry, and environmental science. This important interdisciplinary text provides extensive guidelines for the application of isotope techniques for all investigatores facing the challenge of protecting precious water, soil, and ecological resources from the ever-increasing problems associated with population growth and environmental change, including those from urban development and agricultural land uses.
Author : International Association of Hydrological Sciences. Scientific Assembly
Publisher : IAHS Press
ISBN 13 : 9781901502251
Total Pages : 374 pages
Book Rating : 4.5/5 (22 download)
Download or read book Hydrochemistry written by International Association of Hydrological Sciences. Scientific Assembly and published by IAHS Press. This book was released on 1997 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Eric Servat
Publisher :
ISBN 13 : 9781901502121
Total Pages : 518 pages
Book Rating : 4.5/5 (21 download)
Download or read book Hydrology of Mediterranean and Semiarid Regions written by Eric Servat and published by . This book was released on 2003 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Colin Mettam
Publisher : Cambridge University Press
ISBN 13 : 1108847560
Total Pages : 45 pages
Book Rating : 4.1/5 (88 download)
Download or read book Nitrogen Isotopes in Deep Time written by Colin Mettam and published by Cambridge University Press. This book was released on 2021-02-18 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen is an essential nutrient for life, and its sources and cycling have varied over earth history. Stable isotope ratios of nitrogen compounds (expressed as δ15N, in ‰) are preserved in the sedimentary record and track these changes, providing important insights into associated biogeochemical feedbacks. Here we review the use of nitrogen stable isotope geochemistry in unravelling the evolution of the global N cycle in deep time. We highlight difficulties with preservation, unambiguous interpretations, and local versus global effects. We end with several case studies illustrating how depositional and stratigraphic context is crucial in reliably interpreting δ15N records in ancient marine sediments, both in ancient anoxic (Archean) and more recent well oxygenated (Phanerozoic) environments.
Author : International Atomic Energy Agency
Publisher :
ISBN 13 :
Total Pages : 230 pages
Book Rating : 4.3/5 (91 download)
Download or read book Palaeoclimates and Palaeowaters written by International Atomic Energy Agency and published by . This book was released on 1983 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
