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 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume includes an important contribution to the knowledge of active soil erosion, especially in typical sites in the Mediterranean belt, where soil degradation is very acute. On the other hand a set of papers is presented which enlighten the important role of laboratory research in the fundamental parametric investigation of processes, i.e. erosion by rain. This is in line with the progressing integration of field and laboratory studies, which is stimulated by more frequent feed-back operations. Finally we want to draw attention to the work of a restricted number of authors who are engaged in the difficult elaboration of pure theoretical models which may pollinate empirical research, by providing new concepts to be tested. Therefore, the fairly extensive publication of two papers by Culling on soil creep mechanisms, whereby the basic force-resistance problem of erosion is discussed at the level of the individual particles. All the other contributions are focused mainly on the processes of erosion by rain. The use of rainfall simulators is very common nowadays. But investigators are not always able to produce full fall velocity of waterdrops. Epema & Riezebos give complementary information on the erosivity of simulators with restricted fall heights. Moeyersons discusses splash erosion under oblique rain, produced with his newly-built S.T.O.R.M-1 simulator. This important contribution may stimulate further investigations on the nearly unknown effects of oblique rain. Bryan & De Ploey examined the comparability of erodibility measurements in two laboratories with different experimental set-ups. They obtained a similar gross ranking of Canadian and Belgian topsoils. Both saturation overland flow and subsurface flow are important runoff sources under the rainforests of northeastern Queensland. Interesting, there, is the correlation between soil colour and hydraulic conductivity observed by Bonell, Gilmour& Cassells. Runoff generation was also a main topic of Imeson's research in northern Morocco, stressing the mechanisms of surface crusting on clayish topsoils. For southeastern Spain Thornes & Gilman discuss the applicability of erosion models based on fairly simple equations of the "Musgrave-type". After Richter (Germany) and Vogt (France) it is Tropeano who completes the image of erosion hazards in European vineyards. He shows that denudation is at the minimum in old vineyards, cultivated with manual tools only. Also in Italy van Asch collected important data about splash erosion and rainwash on Calabrian soils. He points out a fundamental distinction between transport-limited and detachment-limited erosion rates on cultivated fields and fallow land. For a representative first order catchment in Central-Java van der Linden comments contrasting denudation rates derived from erosion plot data and river load measurements. Here too, on some slopes, detachment-limited erosion seems to occur. The effects of oblique rain, time-dependent phenomena such as crusting and runoff generation, detachment-limited and transport-limited erosion including colluvial deposition, are all aspects of single rainstorms and short rainy periods for which particular, predictive models have to be built. Moreover, it is argued that flume experiments may be an economic way to establish gross erodibility classifications. The present volume may give an impetus to further investigations and to the evaluation of the proposed conclusions and suggestions.

Download or read book A Study of Runoff and Erosion Processes Using Large and Small Area Rainfall Simulators written by Timothy J. Ward and published by . This book was released on 1986 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Erosion Research Methods written by Soil and Water Conservation Society (U. S.) and published by Routledge. This book was released on 2017-10-19 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition of Soil Erosion Research Methods retains the themes and layout of the first edition. However, most chapters have been revised and some additional chapters have been added. There are new chapters on modeling wind and water erosion. Extensive revisions and updating have been done in chapters dealing with assessment of erosivity and erodibility, erosion, crop productivity, measuring sediment yield from river basins and field plot techniques. There is extensive updating of current statistics on the global magnitude of soil erosion by water and wind and on denudation rates. Several new authors have made significant improvements in revising and updating available information.

Download or read book Runoff and Soil Loss Under Simulated Rainfall written by Virendra Barai and published by LAP Lambert Academic Publishing. This book was released on 2011-08 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: The knowledge of rainfall in terms of its intensity, duration, frequency, temporal distribution and droplet size distribution are important for appropriate estimation of runoff and erosion. That is required for hydrologic design of soil and water conservation structures. However the rainfall is the natural process and governed by the random processes. It takes several years to cover the entire range of above stated parameters and to study their effects on runoff and erosion. Therefore for quick understanding of this process and to accelerate the part of research on this aspect, it is necessary to observe the desired range of these parameters in the laboratory on controlled situation. Rainfall simulators they have the capability to vary the rainfall parameters in the desired range and therefore useful for such studies. Rainfall simulators offer the possibility of the advances in understanding the basic processes of runoff and erosion and the speed of the research is accelerated. One needs not to wait for the right kind of rains to come at right time for obtaining the results. The relationship developed include: water pressure, raindrop size and rainfall intensity with soil loss.

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 Rain Simulation Studies of the Effect of Slope on Erosion and Run off 1938 written by H. L. Borst and published by . This book was released on 1940 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of Rainfall Simulators Runoff and Erosion Processes and Nutrient Yields on Selected Sites in Arizona and New Mexico written by Timothy J. Ward and published by . This book was released on 1989 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development and Use of a Portable Rainfall Simulator to Determine the Erosion Characteristics of Several Soils in the Lake Tahoe Basin written by John Reed Munn and published by . This book was released on 1974 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Erodibility of Selected Hawaii Soils by Rainfall Simulation written by Edgar W. Dangler and published by . This book was released on 1976 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Hydrology on Soil Erosion written by Jesús Rodrigo-Comino and published by MDPI. This book was released on 2021-01-21 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Special Issue includes manuscripts about soil erosion and degradation processes and the accelerated rates due to hydrological processes and climate change. The new research included in this issue focuses on measurements, modeling, and experiments in field or laboratory conditions developed at different scales (pedon, hillslope, and catchment). This Special Issue received investigations from different parts of the world such as Ethiopia, Morocco, China, Iran, Italy, Portugal, Greece, and Spain, among others. We are happy to see that all papers presented findings characterized as unconventional, provocative, innovative, and methodologically new. We hope that the readers of the journal Water can enjoy and learn about hydrology and soil erosion using the published material, and share the results with the scientific community, policymakers, and stakeholders to continue this amazing adventure, facing plenty of issues and challenges.

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 Erosion Transport and Deposition Processes written by H.-R. Bork and published by . This book was released on 1991 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Symposium dedicated to Heinrich Rohdenburg was held in August and September 1989 at Königslutter, FRG. The papers contained in this volume are a selection of those presented at the symposium. Reflecting the wide range of geomorphological, hydrological, pedological, and geoecological research fields of Heiner Rohdenburg the papers of this Catena Supplement vary from general diagnoses and considerations concerning the evolution of landscapes, process studies in the laboratory and in the field to process-orientated models. Honouring the extraordinary, ecosystem-oriented work of Heiner Rohdenburg, the papers present the state of the art, indicating many directions for future research.

Download or read book RCA III USDA Natural Resources Conservation Service written by and published by . This book was released on 1995 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Statistical Evaluation of Rainfall simulator and Erosion Testing Procedure written by Sheldon M. Law and published by . This book was released on 1977 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface Runoff and Soil Loss Under Varying Rainfall Intensity written by James Raude and published by LAP Lambert Academic Publishing. This book was released on 2011-04 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mau forest complex has experienced forest destruction to make room for cultivation from as early as 1970s. This has had a disastrous effect on forest cover. The changing land use has resulted in reduced water retention capacity and increased soil erosion in the catchment. Consequently very large peaks and low flows with frequent drying up in the lower reaches are common in River Njoro. Due to increased erosion, the river deposits so much sediments into Lake Nakuru. The study investigated the effect of rainfall intensity on soil erosion and surface runoff on different land use practices. Field rainfall simulation at different rainfall intensities was used to examine infiltration, surface runoff and soil loss on natural forest, agricultural and grazing lands.The study found that there was a significant difference in the mean runoff rate and soil lost from the three land use practices. Soil loss increased as rainfall intensity increased.However, the highest mean runoff rate was recorded from grazing area followed by agricultural while forested area recorded the least runoff rate.These results are useful in prioritizing interventions for land and water management

Download or read book Comparison of Rainfall Energy and Soil Erosion Parameters from a Rainfall Simulator and Natural Rain written by William T. Gilmore and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerous studies have used artificial rainfall to quantify relationships for runoff and soil detachment. Application of these results to natural rainfall conditions is dependent in part on how well artificial rainfall mimics these natural conditions. In this study, an optical rainfall imaging system was used to determine the drop-size distributions (DSDs) of natural rain in Missouri. These observations have been compared to those from an indoor gravity rainfall simulator. This thesis reports the results of the DSD intercomparison, where a gamma distribution curve was expected, but a special form of a gamma distribution (exponential distribution) was found. This thesis also explores the impact of the increased velocity of drops due to wind can account for up to one quarter of the total kinetic energy of the rainfall (Helming 2001). However, the results presented here show that about one-half of the total kinetic energy was estimated from horizontal wind, although highly dependent on wind velocity. While there are differences between the shapes of the DSDs, the most significant difference between the natural and simulated rain observed in the cases to date is the temporal variation and the impact of wind that is associated with natural rain.

Download or read book The Interaction Effects of Rainfall Intensity Rainfall Amount and Slope Length on Soil Loss as Evaluated with a Rainfall Simulator written by James Samuel Rogers and published by . This book was released on 1962 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: