Download or read book Mechanics of Soil Erosion from Overland Flow Generated by Simulated Rainfall written by Mustafa Kilinc and published by . This book was released on 1973 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanics of Soil Erosion from Overland Flow Generated by Simulated Rainfall written by Harold Ray Duke and published by . This book was released on 1973 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanics of Soil Erosion from Overland Flow Generated by Simulated Rainfall written by and published by . This book was released on 1973 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Erosion by Overland Flow with Rainfall written by Raúl Emilio Zapata and published by . This book was released on 1987 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rainfall Simulation Runoff and Soil Erosion written by Jan de Ploey and published by . This book was released on 1983 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Rainfall Simulator Workshop written by and published by . This book was released on 1979 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: Werkdocumenten van een symposium uit de Verenigde Staten over methoden om natuurlijke regenval na te bootsen in bodemkundige experimenten

Download or read book Mathematical Modeling of Soil Erosion by Rainfall and Shallow Overland Flow written by Tingting Zheng and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: New analytical and numerical solutions are developed to both the kinematic approximation to the St Venant equations and the Hairsine-Rose (HR) soil erosion model in order to gain a better physical understanding of soil erosion and sediment transport in shallow overland flow. The HR model is unique amongst physically based erosion models in that it is the only one that: considers the entire distribution of the soil s sediment size classes, considers the development of a layer of deposited non-cohesive sediment having different characteristics to the original underlying cohesive soil and considers separately the erosion processes of rainfall detachment, runoff entrainment and gravitational deposition. The method of characteristics and the method of lines were used to develop both the analytical and numerical solutions respectively. These solutions were obtained for boundary and initial conditions typical of those used in laboratory flume experiments along with physically realistic constant and time dependent excess rainfall rates. Depending on the boundary and initial conditions, interesting new solutions of the kinematic wave equation containing expansion waves, travelling shocks as well as solutions which split into an upslope and downslope drying profiles were found. Numerical solutions of the HR model were applied to the experimental flume data of Polyakov and Nearing (2003) obtained under flow conditions which periodically cycled between net erosion and net deposition conditions. While excellent agreement was found with suspended sediment data, the analysis suggested that an additional transport mechanisms, traditionally not included in soil erosion models, was occurring. While the inclusion of bed-load transport improved the ii overall model prediction, it was still not sufficient. Subsequent asymptotic analysis then showed that the interaction of the flow with an evolving bed morphology was in fact far more important than bed load transport. A very interesting finding from this work showed that the traditional criterion of validating sediment transport model based solely on suspended sediment data was not sufficient as reliable predictions could be obtained even when important transport mechanisms were neglected. Experimental plots of sediment discharge or suspended sediment concentration against water discharge in overland flow have been shown to contain significant hysteresis between the falling and rising limbs of the discharge hydrograph. In the final Chapter, the numerical solution developed for the complete system of soil erosion and kinematic flow was used to show that it was possible for the HR model to simulate three of the four hysteresis loops identified in the literature. Counter clock-wise loops, clock-wise loops and figure 8 loops could all be produced as a result of starting with different initial conditions, being mi(x; 0) = 0, mi(x; 0) = pimt and mi(x; 0) = 0:5pimt respectively. This is the first time that these types of hysteresis loops have been produced by any erosion model. The generation of these hysteresis loops are physically explainable in terms of sediment availability and is consistent with data obtained on the field scale.

Download or read book Soil Erosion written by Rorke Bryan and published by Destedt, West Germany : Catena Verlag. This book was released on 1990 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface seal development in relation to rainstorm intensity. Experimental study and modelling of soil surface crusting processes. Fabric analysis of surface crusts developed under simulated rainfall on loess soils, China. Temporal variations in soil erodibility. Modelling erosion by rain-impacted flow. Solute transport and wind action in relation to overlanc flow and water erosion. Initiation of motion of gravels in concentrated overland flow: cohesive forces and probability of entrainment. Inception of sediment transport in shallow overland flow. Knickpoint evolution in rillwash. A one-dimensional model for rill inter-rill interactions. Threshold conditions for thalweg gulliyng with special reference to loess areas. Interpreting the role of soil strenght in erosion processes. Grain size catenas and hillslope evolution. Quantification of soil redistribution in cultivated fields, using Caesium-137, outlook, Saskatchewan. The catastrophic nature of seepage scald formation in southeastern Australia.

Download or read book Hydraulics of Sediment Transport written by Walter Hans Graf and published by Water Resources Publication. This book was released on 1984 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is divided into four parts: Part 1 is entitled "A Short History of Sediment Transport"; Part 2 deals with the "Hydrodynamics of Fluid-Particle Systems"; Part 3 is concerned with the "Sediment Transport in Open Channels"; and Part 4 describes the "Sediment Transport in Closed Pipes." The intent of this book was to make each part as self-contained as possible which has made this an exceptional and successful textbook. The brief introduction preceding each part will help the reader become familiar with the topic. This book has been used successfully both as a classroom textbook and as a reference book by consultants involved with sediment transport.

Download or read book Rainfall Simulators written by Roger D. Birk and published by . This book was released on 1979 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Note written by and published by . This book was released on 1978 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Encyclopedia of Forest Sciences written by Julian Evans and published by Academic Press. This book was released on 2004-04-02 with total page 6502 pages. Available in PDF, EPUB and Kindle. Book excerpt: A combination of broad disciplinary coverage and scientific excellence, the Encyclopedia of Forest Sciences will be an indispensable addition to the library of anyone interested in forests, forestry and forest sciences. Packed with valuable insights from experts all over the world, this remarkable set not only summarizes recent advances in forest science techniques, but also thoroughly covers the basic information vital to comprehensive understanding of the important elements of forestry. The Encyclopedia of Forest Sciences also covers relevant biology and ecology, different types of forestry (e.g. tropical forestry and dryland forestry), scientific names of trees and shrubs, and the applied, economic, and social aspects of forest management. Valuable key features further enhance the utility of this Encyclopedia as an exceptional reference tool. Also available online via ScienceDirect – featuring extensive browsing, searching, and internal cross-referencing between articles in the work, plus dynamic linking to journal articles and abstract databases, making navigation flexible and easy. For more information, pricing options and availability visit www.info.sciencedirect.com. Edited and written by a distinguished group of editors and contributors Well-organized encyclopedic format provides concise, readable entries, easy searches, and thorough cross-references Illustrative tables, figures, and photographs in every entry, produced in full color Comprehensive glossary defines new and important terms Complete, up-to-date coverage of over 60 areas of forest sciences - sure to be of interest to scientists, students, and professionals alike! Editor-in-Chief is the past president of the International Union of Forestry Research Organizations, the oldest international collaborative forestry research organization with over 15,000 scientists from 100 countries

Download or read book The Hydrology geomorphology Interface written by Marwan A. Hassan and published by IAHS Press. This book was released on 2000 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Erosion and Sedimentation written by Pierre Y. Julien and published by Cambridge University Press. This book was released on 2010-06-10 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of this acclaimed, accessible textbook brings the subject of sedimentation and erosion up-to-date, providing an excellent primer on both fundamental concepts of sediment-transport theory and methods for practical applications. The structure of the first edition is essentially unchanged, but all the chapters have been updated, with several chapters reworked and expanded significantly. Examples of the new additions include the concept of added mass, the Modified Einstein Procedure, sediment transport by size fractions, sediment transport of sediment mixtures, and new solutions to the Einstein Integrals. Many new examples and exercises have been added. Erosion and Sedimentation is an essential textbook on the topic for students in civil and environmental engineering and the geosciences, and also as a handbook for researchers and professionals in engineering, the geosciences and the water sciences.

Download or read book Arid Zone Geomorphology written by David S. G. Thomas and published by John Wiley & Sons. This book was released on 2011-02-08 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt: The new edition of Arid Zone Geomorphology aims to encapsulate the advances that have been made in recent years in the investigation and explanation of landforms and geomorphological processes in drylands. Building on the success of the previous two editions, the Third Edition has been completely revised and updated to reflect the latest developments in the field. Whilst this latest edition will remain a comprehensive reference to the subject, the book has been restructured to include regional case studies throughout to enhance student understanding and is clearly defined into five distinct sections; Firstly, the book introduces the reader to Large Scale Controls and Variability in Drylands and then moves on to consider Surface Processes and Characteristics; The Work of Water, The Work of the Wind. The book concludes with a section on Living with Dryland Geomorphology that includes a chapter on geomorphological hazards and the human impact on these environments. Once again, recognised world experts in the field have been invited to contribute chapters in order to present a comprehensive and up-to-date overview of current knowledge about the processes shaping the landscape of deserts and arid regions. In order to broaden the appeal of the Third Edition, the book has been reduced in extent by 100 pages and the Regional chapters have been omitted in favour of the inclusion of key regional case studies throughout the book. The Editor is also considering the inclusion of a supplementary website that could include further images, problems and case studies.

Download or read book Advances in Soil Science written by and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: The world population in 1930 was 2 billion. It reached 3 billion in 1960, stands at 4. 6 billion today, and is expected to reach 6 billion by the end of the century. The food and fiber needs of such a rapidly increasing population are enormous. One of the most basic resources, perhaps the most basic of all, for meeting these needs is the soil. There is an urgent need to improve and protect this resource on which the future of mankind directly depends. We must not only learn how to use the soil to furnish our immediate needs, but also ensure that the ability of the soil to sustain food production in the future is unimpaired. This is indeed a mammoth task; a 1977 United Nations survey reported that almost one-fifth of the world's is now being steadily degraded. The diversity of soil makes it cropland necessary for research to be conducted in many locations. There are basic principles, however, that are universal. This, Advances in Soil Sciences, presents clear and concise reviews in all areas of soil science for everyone interested in this basic resource and man's influence on it. The purpose of the series is to provide a forum for leading scientists to analyze and summarize the available scientific information on a subject, assessing its importance and identifying additional research needs. But most importantly, the contributors will develop principles that have practical applications to both developing and developed agricultures.

Download or read book Space and Time in Geomorphology written by Colin E. Thorn and published by Routledge. This book was released on 2020-05-10 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, first published in 1982, is a collection of articles aimed at advancing the field of geomorphology. It starts from the position that a meaningful grasp of landscape evolution would depend upon an understanding of the present spatial distribution of processes and process rates; comparison of spatial versus temporal change; and careful appraisal of the character and composition of the stratigraphic record. Each article uses a data set to address between threshold variability in either a spatial or temporal context, and often both.