Facteurs Physiques De Lerosion Significatifs Au Niveau Des Flux Exportes Par Les Bassins Versants

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Facteurs physiques de l'érosion significatifs au niveau des flux exportés par les bassins versants

Author : Redha Kribeche
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (793 download)

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Book Synopsis Facteurs physiques de l'érosion significatifs au niveau des flux exportés par les bassins versants by : Redha Kribeche

Download or read book Facteurs physiques de l'érosion significatifs au niveau des flux exportés par les bassins versants written by Redha Kribeche and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: La complexite des phenomenes contribuant au fonctionnement des hydro-systemes en milieu agricole a ete a l'origine de diverses recherches notamment liees a l'etude des effets des changements des pratiques agricoles sur le regime hydrologique et la qualite des eaux de rivieres. La modelisation du transfert des matieres en suspension a l'echelle du bassin versant represente l'un des axes de recherches menees dans le cadre du programme de recherches environnementales sur la riviere seine (piren). L'emploi du modele conceptuel de transfert de mes developpe au cemagref a permis de valider son utilisation sur les diverses series de donnees enregistrees sur les sites de mesures du bassin du grand morin. L'analyse de la variation des parametres du modele cale sur divers evenements de crues etudies a permis de degager une relative transposabilite des jeux de parametres entre sous-bassins emboites sans pertes de qualite de la modelisation des flux de mes par rapport a des estimations purement locales. L'emploi du modele de transfert de mes ainsi concu sur des bassins non jauges a ete possible grace a un couplage realise avec un modele hydrologique fournissant des debits simules au lieu de ceux reellement mesures. Ce couplage a pu etre teste et valide sur les differents sites de mesures, puis compare a un modele (cequeau) quantite/qualite de fonctionnement similaire. L'introduction de facteurs physiques caracteristiques de l'evolution structurale du sol ainsi que du couvert vegetal, dans l'etude de la modelisation du transfert de mes a permis de degager certaines relations entres ces facteurs et la variation des parametres du modele cale sur les divers evenements de crues modelises.

FACTEURS PHYSIQUES DE L'EROSION SIGNIFICATIFS AU NIVEAU DES FLUX EXPORTES PAR LES BASSINS VERSANTS. IDENTIFICATION PAR MODELISATION

Download FACTEURS PHYSIQUES DE L'EROSION SIGNIFICATIFS AU NIVEAU DES FLUX EXPORTES PAR LES BASSINS VERSANTS. IDENTIFICATION PAR MODELISATION PDF Online Free

Author : REDHA.. KRIBECHE
Publisher :
ISBN 13 :
Total Pages : 215 pages
Book Rating : 4.:/5 (492 download)

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Book Synopsis FACTEURS PHYSIQUES DE L'EROSION SIGNIFICATIFS AU NIVEAU DES FLUX EXPORTES PAR LES BASSINS VERSANTS. IDENTIFICATION PAR MODELISATION by : REDHA.. KRIBECHE

Download or read book FACTEURS PHYSIQUES DE L'EROSION SIGNIFICATIFS AU NIVEAU DES FLUX EXPORTES PAR LES BASSINS VERSANTS. IDENTIFICATION PAR MODELISATION written by REDHA.. KRIBECHE and published by . This book was released on 1999 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA COMPLEXITE DES PHENOMENES CONTRIBUANT AU FONCTIONNEMENT DES HYDRO-SYSTEMES EN MILIEU AGRICOLE A ETE A L'ORIGINE DE DIVERSES RECHERCHES NOTAMMENT LIEES A L'ETUDE DES EFFETS DES CHANGEMENTS DES PRATIQUES AGRICOLES SUR LE REGIME HYDROLOGIQUE ET LA QUALITE DES EAUX DE RIVIERES. LA MODELISATION DU TRANSFERT DES MATIERES EN SUSPENSION A L'ECHELLE DU BASSIN VERSANT REPRESENTE L'UN DES AXES DE RECHERCHES MENEES DANS LE CADRE DU PROGRAMME DE RECHERCHES ENVIRONNEMENTALES SUR LA RIVIERE SEINE (PIREN). L'EMPLOI DU MODELE CONCEPTUEL DE TRANSFERT DE MES DEVELOPPE AU CEMAGREF A PERMIS DE VALIDER SON UTILISATION SUR LES DIVERSES SERIES DE DONNEES ENREGISTREES SUR LES SITES DE MESURES DU BASSIN DU GRAND MORIN. L'ANALYSE DE LA VARIATION DES PARAMETRES DU MODELE CALE SUR DIVERS EVENEMENTS DE CRUES ETUDIES A PERMIS DE DEGAGER UNE RELATIVE TRANSPOSABILITE DES JEUX DE PARAMETRES ENTRE SOUS-BASSINS EMBOITES SANS PERTES DE QUALITE DE LA MODELISATION DES FLUX DE MES PAR RAPPORT A DES ESTIMATIONS PUREMENT LOCALES. L'EMPLOI DU MODELE DE TRANSFERT DE MES AINSI CONCU SUR DES BASSINS NON JAUGES A ETE POSSIBLE GRACE A UN COUPLAGE REALISE AVEC UN MODELE HYDROLOGIQUE FOURNISSANT DES DEBITS SIMULES AU LIEU DE CEUX REELLEMENT MESURES. CE COUPLAGE A PU ETRE TESTE ET VALIDE SUR LES DIFFERENTS SITES DE MESURES, PUIS COMPARE A UN MODELE (CEQUEAU) QUANTITE/QUALITE DE FONCTIONNEMENT SIMILAIRE. L'INTRODUCTION DE FACTEURS PHYSIQUES CARACTERISTIQUES DE L'EVOLUTION STRUCTURALE DU SOL AINSI QUE DU COUVERT VEGETAL, DANS L'ETUDE DE LA MODELISATION DU TRANSFERT DE MES A PERMIS DE DEGAGER CERTAINES RELATIONS ENTRES CES FACTEURS ET LA VARIATION DES PARAMETRES DU MODELE CALE SUR LES DIVERS EVENEMENTS DE CRUES MODELISES.

Sediment Cascades

Author : Tim Burt
Publisher : John Wiley & Sons
ISBN 13 : 9780470682869
Total Pages : 482 pages
Book Rating : 4.6/5 (828 download)

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Book Synopsis Sediment Cascades by : Tim Burt

Download or read book Sediment Cascades written by Tim Burt and published by John Wiley & Sons. This book was released on 2010-01-07 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sediment Cascades: An Integrated Approach provides a comprehensive overview that addresses the transport of sediment through the landscape. Suitable for academic researchers, industry practitioners, research students and advanced level undergraduates, seeking detailed knowledge and an up-to-date review of the recent research literature. The emphasis is on contemporary sediment system dynamics with relevance both to landscape management and landform development. Sediment Cascades: An Integrated Approach begins with an explanation of the need for an integrated approach to sediment delivery systems and introduces the main themes of sediment production, delivery, storage and transfer. Further chapters then focus on specific environments from mountains, through floodplains, to estuaries and the continental shelf. Focuses on contemporary sediment system dynamics and current research Covers a sequence of environments from steep mountains to the continental shelf Highlights the continuity of the subject by linking each component area with its adjacent elements

Greenhouse Gas Emissions - Fluxes and Processes

Author : A. Tremblay
Publisher : Springer Science & Business Media
ISBN 13 : 3540266437
Total Pages : 743 pages
Book Rating : 4.5/5 (42 download)

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Book Synopsis Greenhouse Gas Emissions - Fluxes and Processes by : A. Tremblay

Download or read book Greenhouse Gas Emissions - Fluxes and Processes written by A. Tremblay and published by Springer Science & Business Media. This book was released on 2011-04-30 with total page 743 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a time when an unquestionable link between anthropogenic emissions of greenhouse gases and climatic changes has finally been acknowledged and * widely documented through IPCC reports, the need for precise estimates of greenhouse gas (GHG) production rates and emissions from natural as well as managed ecosystems has risen to a critical level. Future agreements between nations concerning the reduction of their GHG emissions will - pend upon precise estimates of the present level of these emissions in both natural and managed terrestrial and aquatic environments. From this viewpoint, the present volume should prove to a benchmark contribution because it provides very carefully assessed values for GHG emissions or exchanges between critical climatic zones in aquatic en- ronments and the atmosphere. It also provides unique information on the biases of different measurement methods that may account for some of the contradictory results that have been published recently in the literature on this subject. Not only has a large array of current measurement methods been tested concurrently here, but a few new approaches have also been developed, notably laser measurements of atmospheric CO concentration 2 gradients. Another highly useful feature of this book is the addition of - nitoring and process studies as well as modeling.

Green Marine Clays

Author : G.S. Odin
Publisher : Elsevier
ISBN 13 : 0080869599
Total Pages : 471 pages
Book Rating : 4.0/5 (88 download)

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Book Synopsis Green Marine Clays by : G.S. Odin

Download or read book Green Marine Clays written by G.S. Odin and published by Elsevier. This book was released on 1988-11-01 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: Green Marine Clays provides a comparative study of four authigenic marine clays: the well-known glaucony marine facies; the newly-identified sedimentary facies - verdine; the old oolitic ironstone facies; and the celadonite-bearing facies.The book demonstrates that the sea bottom plays host to a variety of clay minerals specific to the marine environment: ferric di-trioctahedral ``serpentine'', ferric chlorite, ferric smectite, ferric mica, ferric ``swelling chlorite'', all widespread in present oceans and all fundamentally formed by crystal growth and recrystallization processes in semi-confined marine microenvironments.A unique feature of the book is the inclusion of the first detailed study of the verdine facies characterized by a variety of authigenic green clays, some of which are new clay mineral species widespread in all tropical oceans. The celadonite-bearing facies has been studied intensively in the last few years and new results are obtained from deep sea samples and from land outcrops. The current knowledge is synthesized and reviewed in comparison with the glaucony facies. A new approach is adopted in the description of the old oolitic ironstone facies in which a comparison is made with the recent verdine facies.The material is abundantly illustrated throughout by 133 figures and 59 tables; 36 of the figures consist of plates showing 170 selected pictures obtained at different scales of observation including the field, binocular microscope, thin sections, transmission electron miscroscopy, scanning electron microscopy, high resolution transmission electron microscopy, X-ray diffraction. A subject index completes the book.The information presented here will help geologists construct a clearer picture of environmental and depositional history of rocks. It will appeal to sedimentologists interested in the processes by which, and the environment in which, clay minerals form. Clay mineralogists will find much useful information on a variety of iron rich minerals, and geochemists interested in the iron in the sea and those working with sedimentary iron ores will also benefit from the book.

Institutional Economics

Author : Bernard Chavance
Publisher : Routledge
ISBN 13 : 1134059884
Total Pages : 111 pages
Book Rating : 4.1/5 (34 download)

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Book Synopsis Institutional Economics by : Bernard Chavance

Download or read book Institutional Economics written by Bernard Chavance and published by Routledge. This book was released on 2008-09-02 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: This introduction to institutional economics, follows the history of the field since the early 20th century until the present day. It concentrates on influential authors in the main schools of institutional economics. Institutional economics is defined as economic thought that considers institutions to be relevant for economic theory, and consequently criticizes the neoclassical mainstream for having pushed them out of the discipline; it deals specially with the nature, the origin, the change of institutions, and their effects on economic performance. It is a family of different theories that were initially influential in economics, then lost much of their weight in the middle half of the 20th century, and eventually recovered significant creative vitality and impact in the last twenty years. The book puts the recent developments in historical perspective by showing how important themes like the importance of habits, the role of formal and informal rules, the relation of organizations and institutions, the hierarchy and complementarity of institutions, the evolutionary character of institutional change, have been explored by various authors or schools.

Quantitative Methods in Geography

Author : Peter John Taylor
Publisher :
ISBN 13 : 9780395186992
Total Pages : 386 pages
Book Rating : 4.1/5 (869 download)

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Book Synopsis Quantitative Methods in Geography by : Peter John Taylor

Download or read book Quantitative Methods in Geography written by Peter John Taylor and published by . This book was released on 1977-01-01 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Basic Technics in Ecological Farming / Techniques de Base en Agriculture Biologique / Grundsätzliche Verfahren der ökologischen Landwirtschaft / Le Maintien de la Fertilité des Sols / The Maintenance of Soil Fertility / Die Erhaltung der Bodenfruchtbarkeit

Download Basic Technics in Ecological Farming / Techniques de Base en Agriculture Biologique / Grundsätzliche Verfahren der ökologischen Landwirtschaft / Le Maintien de la Fertilité des Sols / The Maintenance of Soil Fertility / Die Erhaltung der Bodenfruchtbarkeit PDF Online Free

Author : Stuart Hill
Publisher : Birkhäuser
ISBN 13 : 3034863101
Total Pages : 364 pages
Book Rating : 4.0/5 (348 download)

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Book Synopsis Basic Technics in Ecological Farming / Techniques de Base en Agriculture Biologique / Grundsätzliche Verfahren der ökologischen Landwirtschaft / Le Maintien de la Fertilité des Sols / The Maintenance of Soil Fertility / Die Erhaltung der Bodenfruchtbarkeit by : Stuart Hill

Download or read book Basic Technics in Ecological Farming / Techniques de Base en Agriculture Biologique / Grundsätzliche Verfahren der ökologischen Landwirtschaft / Le Maintien de la Fertilité des Sols / The Maintenance of Soil Fertility / Die Erhaltung der Bodenfruchtbarkeit written by Stuart Hill and published by Birkhäuser. This book was released on 2013-12-14 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Unsaturated Flow in Hydrologic Modeling

Author : H.J. Morel-Seytoux
Publisher : Springer Science & Business Media
ISBN 13 : 940092352X
Total Pages : 534 pages
Book Rating : 4.4/5 (9 download)

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Book Synopsis Unsaturated Flow in Hydrologic Modeling by : H.J. Morel-Seytoux

Download or read book Unsaturated Flow in Hydrologic Modeling written by H.J. Morel-Seytoux and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume certainly is a Conference Proceedings, the Proceedings of the NATO Advanced Research Workshop (ARW) on "Unsaturated Flow in Hydrologic Modeling" held at "Les Villages du Soleil" near ArIes, France from June 13 to 17, 1988. Let me therefore acknowledge properly, at the very beginning, the gratitude of all the participants to the NATO Science Committee for its generous support and worthwhile goal of bringing together scientists of many countries to communicate and share their experiences. Particular thanks are extended to the director of the program, Dr. Luis Vega da Cunha for his interest and understanding. On the other hand this volume is also, and probably more so, a Textbook that fills a gap in the field of unsaturated flow. Many treatises on the subject present the theory in its different aspects. Hardly any explain in details how the different pieces can be put together to address realistic problems at the basin scale. The various invited contributions to the ARW were structured in a subject progression much as chapters are organized in a book. The intent of the ARW was to assess the current state of knowledge in "Unsaturated Flow" and its use in "Hydrologic Modeling Practice". In a sense the interest in fundamentals of unsaturated flow in this ARW was not just for the sake of knowledge but also and primarily for the sake of action. Can such fundamental knowledge be utilized for better management of the water resource? was the basic question.

Cropping Systems, Land Tenure and Social Diversity in Wenchi, Ghana

Author : Samuel Adjei-Nsiah
Publisher :
ISBN 13 :
Total Pages : 234 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Cropping Systems, Land Tenure and Social Diversity in Wenchi, Ghana by : Samuel Adjei-Nsiah

Download or read book Cropping Systems, Land Tenure and Social Diversity in Wenchi, Ghana written by Samuel Adjei-Nsiah and published by . This book was released on 2006 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: However, there is still considerable scope for further development of these self-organised innovations.

A Frequency Dictionary of French

Author : Deryle Lonsdale
Publisher : Routledge
ISBN 13 : 1135973504
Total Pages : 974 pages
Book Rating : 4.1/5 (359 download)

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Book Synopsis A Frequency Dictionary of French by : Deryle Lonsdale

Download or read book A Frequency Dictionary of French written by Deryle Lonsdale and published by Routledge. This book was released on 2009-03-25 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Frequency Dictionary of French is an invaluable tool for all learners of French, providing a list of the 5000 most frequently used words in the language. Based on a 23-million-word corpus of French which includes written and spoken material both from France and overseas, this dictionary provides the user with detailed information for each of the 5000 entries, including English equivalents, a sample sentence, its English translation, usage statistics, and an indication of register variation. Users can access the top 5000 words either through the main frequency listing or through an alphabetical index. Throughout the frequency listing there are thematically-organized lists of the top words from a variety of key topics such as sports, weather, clothing, and family terms. An engaging and highly useful resource, the Frequency Dictionary of French will enable students of all levels to get the most out of their study of French vocabulary. Former CD content is now available to access at www.routledge.com/9780415775311 as support material. Designed for use by corpus and computational linguists it provides the full text in a format that researchers can process and turn into suitable lists for their own research work. Deryle Lonsdale is Associate Professor in the Linguistics and English Language Department at Brigham Young University (Provo, Utah). Yvon Le Bras is Associate Professor of French and Department Chair of the French and Italian Department at Brigham Young University (Provo, Utah).

The Governance of Globalisation

Author : Pontificia Accademia delle scienze sociali. Plenary Session
Publisher :
ISBN 13 :
Total Pages : 448 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis The Governance of Globalisation by : Pontificia Accademia delle scienze sociali. Plenary Session

Download or read book The Governance of Globalisation written by Pontificia Accademia delle scienze sociali. Plenary Session and published by . This book was released on 2004 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Doing Business 2020

Author : World Bank
Publisher : World Bank Publications
ISBN 13 : 1464814414
Total Pages : 241 pages
Book Rating : 4.4/5 (648 download)

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Book Synopsis Doing Business 2020 by : World Bank

Download or read book Doing Business 2020 written by World Bank and published by World Bank Publications. This book was released on 2019-11-21 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seventeen in a series of annual reports comparing business regulation in 190 economies, Doing Business 2020 measures aspects of regulation affecting 10 areas of everyday business activity.

A Typology of Sculpted Forms in Open Bedrock Channels

Author : Keith Richardson
Publisher : Geological Society of America
ISBN 13 : 0813723922
Total Pages : 116 pages
Book Rating : 4.8/5 (137 download)

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Book Synopsis A Typology of Sculpted Forms in Open Bedrock Channels by : Keith Richardson

Download or read book A Typology of Sculpted Forms in Open Bedrock Channels written by Keith Richardson and published by Geological Society of America. This book was released on 2005-01-01 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Rivers Over Rock

Author : Keith J. Tinkler
Publisher : American Geophysical Union
ISBN 13 : 0875900909
Total Pages : 325 pages
Book Rating : 4.8/5 (759 download)

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Book Synopsis Rivers Over Rock by : Keith J. Tinkler

Download or read book Rivers Over Rock written by Keith J. Tinkler and published by American Geophysical Union. This book was released on 1998-02-04 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 107. Bedrock river channels are sites of primary erosion in the landscape, fixing the baselevel for all points upstream. This volume provides for the first time an integrated view of the characteristics and operation of this important, though hitherto neglected, class of channels. Examples are provided from several continents and cover a wide range of spatial scales from the large river basins (such as the Colorado River in the United States and the Indus River in Pakistan) down to reach scales and individual sites. Likewise the geologic timescales considered range from erosion and transportation during individual flows to accumulated effects over periods of tens of millions of years.

The Water Environment of Cities

Author : Lawrence A. Baker
Publisher : Springer
ISBN 13 : 9780387849126
Total Pages : 0 pages
Book Rating : 4.8/5 (491 download)

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Book Synopsis The Water Environment of Cities by : Lawrence A. Baker

Download or read book The Water Environment of Cities written by Lawrence A. Baker and published by Springer. This book was released on 2010-11-16 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concept for the Water Environment of Cities arose from a workshop “Green 1 Cities, Blue Waters” workshop held in 2006. The workshop assembled experts from engineering, planning, economics, law, hydrology, aquatic ecology, geom- phology, and other disciplines to present research ?ndings and identify key new ideas on the urban water environment. At a lunch discussion near the end of the workshop, several of us came to the recognition that despite having considerable expertise in a narrow discipline, none of us had a vision of the “urban water en- ronment” as a whole. We were, as in the parable, blind men at opposite ends of the elephant, knowinga great deal about the parts, but notunderstandingthe whole. We quickly recognized the need to develop a book that would integrate this knowledge to create this vision. The goal was to develop a book that could be used to teach a complete, multidisciplinary course, “The Urban Water Environment”, but could also be used as a supplemental text for courses on urban ecosystems, urban design, landscapearchitecture,water policy,waterqualitymanagement andwatershed m- agement. The book is also valuable as a reference source for water professionals stepping outside their arena of disciplinary expertise. The Water Environment of Cities is the ?rst book to use a holistic, interdis- plinary approach to examine the urban water environment. We have attempted to portrayaholisticvisionbuiltaround theconcept of water as a coreelement ofcities. Water has multipleroles:municipalwatersupply,aquatichabitat,landscapeaesth- ics, and recreation. Increasingly, urban water is reused, serving multiple purposes.

El Niño

Author : Bruno Voituriez
Publisher : UNESCO
ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis El Niño by : Bruno Voituriez

Download or read book El Niño written by Bruno Voituriez and published by UNESCO. This book was released on 2000 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: El Nino, caprice of the heavens, scapegoat for every calamity? The general public cannot really understand what is behind the El Nino phenomenon. The book offers a tour of the Earth's climate to understand one of its normal but extreme components.