Download or read book Mod les de crues et petits bassins versants au Sahel written by Pierre Ribstein and published by . This book was released on 1990 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: LES FORTES CRUES DES PETITS BASSINS SAHELIENS SE CARACTERISENT PAR UNE PREPONDERANCE DU RUISSELLEMENT SUPERFICIEL PAR RAPPORT AUX AUTRES TYPES D'ECOULEMENTS (ECOULEMENT RETARDE, ECOULEMENT DE BASE). CETTE CARACTERISTIQUE PEUT S'EXPLIQUER PAR L'HOMOGENEITE DES FORMES DES FORTES PLUIES, MAIS AUSSI PAR L'ABSENCE DE NAPPE SOUTERRAINE PROCHE DE LA SURFACE ET PAR LES PARTICULARITES DES ORGANISATIONS PELLICULAIRES DE L'HORIZON SUPERFICIEL DU SOL. CES DIFFERENTS FACTEURS FONT DU SAHEL UNE REGION IDEALE POUR L'APPLICATION DU CONCEPT D'HYDROGRAMME UNITAIRE, AVEC COMME OBJECTIF L'ANALYSE ET LA PREDETERMINATION DES FORTES CRUES. PLUSIEURS MODELES FONDES SUR LA TECHNIQUE DE L'HYDROGRAMME UNITAIRE SONT PRESENTES. ILS SE DIFFERENCIENT PAR L'EXPRESSION ANALYTIQUE DE LA FONCTION DE PRODUCTION ET PAR LA METHODE D'IDENTIFICATION DE LA FONCTION DE TRANSFERT. CES MODELES SONT APPLIQUES AUX DONNEES DE HUIT PETITS BASSINS VERSANTS DE SUPERFICIE INFERIEURE A 100 KM#2. CETTE APPLICATION PERMET DE DELIMITER LE DOMAINE DE VALIDITE DE CE TYPE DE MODELISATION. UNE METHODE DE PREDETERMINATION DE CRUES SUR DES BASSINS NON JAUGES EST PROPOSEE. LES HYPOTHESES DE BASE DE CETTE METHODE SONT CONFIRMEES PAR DES RESULTATS DE LA MODELISATION
Download or read book The Hydrology of Areas of Low Precipitation written by International Association of Hydrological Sciences and published by . This book was released on 1979 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inland Valleys in West Africa written by P. N. Windmeijer and published by . This book was released on 1993 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Elements for a bibliography of the Sahel drought Updating written by and published by . This book was released on 1991 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparative Hydrology written by Malin Falkenmark (editor.) and published by . This book was released on 1989 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Crop and Water Management Systems for Rainfed Agriculture in the Sudano Sahelian Zone written by International Crops Research Institute for the Semi-Arid Tropics and published by . This book was released on 1989 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Remote sensing and water resources written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 1997 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication presents the results of an international workshop which was organized in Montpellier, France, in December 1995. The purpose of the workshop was to review the state of the art in the use of remote sensing for water resources assessment and management with special reference to operational techniques. Emphasis was given to surface hydrology, with applications for arid and semi-arid areas in developing countries for which such techniques are believed to be of particular relevance. Cette publication presente les resultats d'un atelier international qui a ete organise a Montpellier en decembre 1995 sur le theme ''Teledetection et ressources en eaux''. L'objectif de cet atelier etait de faire le point sur les techniques et methodes operationnelles d'utilisation de la teledetection pour l'evaluation et la gestion des ressources en eaux. L'accent a ete mis sur l'hydrologie de surface et sur des exemples d'application pratique de ces methodes. L'atelier s'est interesse tout particulierement aux problemes des pays arides et semi-arides en developpement pour lesquels ces techniques peuvent representer un atout important."
Download or read book Annals of geomorphology written by and published by . This book was released on 1960 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book French books in print anglais written by Electre and published by . This book was released on 2002 with total page 1798 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Erosion Budgets and Their Hydrologic Basis written by Henri Vogt and published by . This book was released on 1986 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The State of the art of Hydrology and Hydrogeology in the Arid and Semi arid Areas of Africa written by Unesco and published by . This book was released on 1990 with total page 1012 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Predicting Soil Erosion by Water written by Kenneth G. Renard and published by . This book was released on 1997 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction and history; Rainfall-runoff erosivity factor (R); Soil erodibility factor (K); Slope length and steepness factors (LS); Cover-management factor (C); Support practice factor (P); RUSLE user guide; Coversion to SI metric system; Calculation of EI from recording-raingage records; Estimating random roughness in the field; Parameter values for major agricultural crops and tillage operations.
Download or read book Wadi Flash Floods written by Tetsuya Sumi and published by Springer Nature. This book was released on 2021-10-11 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book brings together research studies, developments, and application-related flash flood topics on wadi systems in arid regions. The major merit of this comprehensive book is its focus on research and technical papers as well as case study applications in different regions worldwide that cover many topics and answer several scientific questions. The book chapters comprehensively and significantly highlight different scientific research disciplines related to wadi flash floods, including climatology, hydrological models, new monitoring techniques, remote sensing techniques, field investigations, international collaboration projects, risk assessment and mitigation, sedimentation and sediment transport, and groundwater quality and quantity assessment and management. In this book, the contributing authors (engineers, researchers, and professionals) introduce their recent scientific findings to develop suitable, applicable, and innovative tools for forecasting, mitigation, and water management as well as society development under seven main research themes as follows: Part 1. Wadi Flash Flood Challenges and Strategies Part 2. Hydrometeorology and Climate Changes Part 3. Rainfall–Runoff Modeling and Approaches Part 4. Disaster Risk Reduction and Mitigation Part 5. Reservoir Sedimentation and Sediment Yield Part 6. Groundwater Management Part 7. Application and Case Studies The book includes selected high-quality papers from five series of the International Symposium on Flash Floods in Wadi Systems (ISFF) that were held in 2015, 2016, 2017, 2018, and 2020 in Japan, Egypt, Oman, Morocco, and Japan, respectively. These collections of chapters could provide valuable guidance and scientific content not only for academics, researchers, and students but also for decision-makers in the MENA region and worldwide.
Download or read book Runoff Prediction in Ungauged Basins written by Günter Blöschl and published by Cambridge University Press. This book was released on 2013-04-18 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt: Predicting water runoff in ungauged water catchment areas is vital to practical applications such as the design of drainage infrastructure and flooding defences, runoff forecasting, and for catchment management tasks such as water allocation and climate impact analysis. This full colour book offers an impressive synthesis of decades of international research, forming a holistic approach to catchment hydrology and providing a one-stop resource for hydrologists in both developed and developing countries. Topics include data for runoff regionalisation, the prediction of runoff hydrographs, flow duration curves, flow paths and residence times, annual and seasonal runoff, and floods. Illustrated with many case studies and including a final chapter on recommendations for researchers and practitioners, this book is written by expert authors involved in the prestigious IAHS PUB initiative. It is a key resource for academic researchers and professionals in the fields of hydrology, hydrogeology, ecology, geography, soil science, and environmental and civil engineering.
Download or read book UNESCO General History of Africa Vol I Abridged Edition written by Jacqueline Ki-Zerbo and published by Univ of California Press. This book was released on 1990 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This volume covers the period from the end of the Neolithic era to the beginning of the seventh century of our era. This lengthy period includes the civilization of Ancient Egypt, the history of Nubia, Ethiopia, North Africa and the Sahara, as well as of the other regions of the continent and its islands."--Publisher's description
Download or read book Soil Erosion written by Terrence J. Toy and published by John Wiley & Sons. This book was released on 2002-05-27 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: - Problem der Bodenerosion wird hier mit ganzheitlichem Ansatz besprochen - Ursachen und Auswirkungen der Erosion werden in sozialökonomischen Kontext gebracht - ausführliche Angaben über Methoden der Verfolgung von Bodenerosion (GPS, GIS, Erdfernerkundung) - mit einer gut verständlichen allgemeinen Einführung in Bodenkunde und Hydrologie
Download or read book Handbook of Erosion Modelling written by R. P. C. Morgan and published by John Wiley & Sons. This book was released on 2016-04-13 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: The movement of sediment and associated pollutants over thelandscape and into water bodies is of increasing concern withrespect to pollution control, prevention of muddy floods andenvironmental protection. In addition, the loss of soil on site hasimplications for declining agricultural productivity, loss ofbiodiversity and decreased amenity and landscape value. The fate ofsediment and the conservation of soil are important issues for landmanagers and decision-makers. In developing appropriate policiesand solutions, managers and researchers are making greater use oferosion models to characterise the processes of erosion and theirinteraction with the landscape. A study of erosion requires one to think in terms ofmicroseconds to understand the mechanics of impact of a singleraindrop on a soil surface, while landscapes form over periods ofthousands of years. These processes operate on scales ofmillimetres for single raindrops to mega-metres for continents.Erosion modelling thus covers quite a lot of ground. This bookintroduces the conceptual and mathematical frameworks used toformulate models of soil erosion and uses case studies to show howmodels are applied to a variety of purposes at a range of spatialand temporal scales. The aim is to provide land managers and otherswith the tools required to select a model appropriate to the typeand scale of erosion problem, to show what users can expect interms of accuracy of model predictions and to provide anappreciation of both the advantages and limitations of models.Problems covered include those arising from agriculture, theconstruction industry, pollution and climatic change and range inscale from farms to small and large catchments. The book will alsobe useful to students and research scientists as an up-to-datereview of the state-of-art of erosion modelling and, through aknowledge of how models are used in practice, in highlighting thegaps in knowledge that need to be filled in order to develop evenbetter models.
