Download or read book Bed Topography of River Bends with Suspended Sediment Transport written by A. M. Talmon and published by . This book was released on 1992 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bed Topography in Shallow River Bends written by Kim Wium Olesen and published by . This book was released on 1987 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bed Topography of River Bends with Suspended Sidiment Transport written by Arnold Martien Talmon and published by . This book was released on 1992 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Theoretical Model for Suspended Sediment Transport in River Bends written by A. M. Talmon and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling Sediment Transport Channel Morphology and Gravel Mining in River Bends written by Ilgi Nam and published by . This book was released on 1995 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: A technique is developed and tested to analyze the interaction of flowing water, bed topography, and bedload sediment transport in meandering channels where gravel bars are removed. The method relates the local velocity distribution, bed shear stress and sediment transport conditions to the local bed configuration in river bends before and after gravel bar removal. Specific attention is given to pool-depth changes as an immediate result of gravel removal, the residual effects of boundary shear stress changes, and the potential long-term consequences from subsequent runoff events with brief periods of increased streamflow and sediment transport. The most significant new aspect of this work is the ability to predict whether or not periodic gravel "mining" by means of bar scalping has a residual or cumulative effect on channel morphology and pool depth, particularly in bends. This application is tested against field data collected for the Chetco River and South Santiam River in Oregon, the East Fork River in Wyoming, and the upper Rhone River in France. Some of these sites have been partially subjected to gravel mining; others offer contrasting circumstances to allow comparisons of effects. The study suggests that the maximum velocity distribution shifts inward toward the convex bank of a channel bend at high water levels after gravel removal from a point bar, assuming that sediment transport rates and resupply from upstream are the same as before bar scalping. The inward shift of the maximum velocity distribution causes changes of boundary shear stress distribution in pool zones. Weaker boundary shear stresses are expected in pool zones after bar scalping. This will result in fewer incipient motion events in pool zones over each runoff season. As a result, the pool will experience net sediment deposition as a long-term effect of sediment transport events separated by periods of bed stability.
Download or read book River Geomorphology written by Edward J. Hickin and published by . This book was released on 1995-06-20 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: River geomorphology contains a selection of twelve river studies. It reflects the rich diversity of perspectives and interests of river scientists internationally.
Download or read book The Application of Hydraulic and Sediment Transport Models in Fluvial Geomorphology written by Artur Radecki-Pawlik and published by MDPI. This book was released on 2020-12-10 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: After publishing the famous “Fluvial Processes in Geomorphology” in the early 1960s, the work of Luna Leopold, Gordon Wolman, and John Miller became a key for opening the door to understanding rivers and streams. They first illustrated the problem to geomorphologists and geographers. Later, Chang, in his “Fluvial Processes in River Engineering”, provided a basis for engineers, showing this group of professionals how to deal with rivers and how to understand them. Since then, more informative studies have been published. Many of the authors started to combine fluvial geomorphology knowledge and river engineering needs, such as “Tools in Fluvial Geomorphology” by G. Mathias Kondolf and Hervé Piégay, or focused more on river engineering tasks, such as “Stream Restoration in Dynamic Fluvial Systems: Scientific Approaches” by Andrew Simon, Sean Bennett, and Janine Castro. Finally, Luna Leopold summarized river and stream morphologies in the beautiful “A view of the river”. It appears that we continue to explore this subject in the right direction. We better understand rivers and streams, and as engineers and fluvial geomorphologists, we can establish tools to help bring rivers alive. However, there is still a hunger for more scientific tools that we could use to further understand rivers and to support the development of healthy streams and rivers with high biodiversity in the present world, which has started to face water scarcity.
Download or read book Sediment Transport Water Quality and Changing Bed Conditions Tucannon River Southeastern Washington written by and published by . This book was released on 1982 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Establishing an Unambiguous Connection Between Grain Size and Style of Sediment Transport in the Lower Niobrara River Nebraska USA written by Vivian Leung (S. B.) and published by . This book was released on 2006 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: The transport of sediment is often separated into two components, bedload and suspended load. This division is important because bedload has a dominant control on channel morphology while suspended load dominates the formation of overbank deposits. Experimental data has related the style of sediment transport to mean flow conditions and bed topography. However direct application of this method in natural, sandy rivers is difficult due to large variabilities in flow. We propose a method for determining local flow conditions using the distribution of grain sizes traveling in the water column. Local shear velocity is found by fitting the Rouse equation for suspended sediment transport to measured sediment concentrations. Empirical criteria for distinguishing between suspended load and bedload are used to determine the fraction of sediment traveling in each respective mode. Application of this method to the Niobrara River, Nebraska, shows that -80 % of the sediment is traveling as suspended load, ~ 20 % is traveling in a transitional mode between bedload and suspended load and less than 1 % is traveling as pure bedload. We establish an unambiguous connection between grain size and the style of sediment transport and highlight the importance of the transitional transport mode in natural systems.
Download or read book Mechanics of Sediment Transportation and Alluvial Stream Problems written by R. J. Garde and published by Taylor & Francis. This book was released on 2000 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Third Edition Of This Book Recognises Two Important Developments That Have Taken Place In Recent Years.(1) Mathematical Modelling Of Alluvial River Processes, And(2) Environmental Aspects Relating To Sedimentation.Both Of These Factors Have Been Duly Considered In This Edition. With Its Detailed Analysis And Clear Presentation, This Book Would Be Extremely Useful For Practising Civil Engineers. It Would Also Serve As An Authoritative Reference Source For Graduate And Senior Undergraduate Civil Engineering Students.
Download or read book Sediment Transport in Gravel Bed Rivers written by C. R. Thorne and published by . This book was released on 1987-09-28 with total page 1038 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes and quantifies the movement and storage of sediment in rivers with gravel-bed material, based upon scientific and engineering principles. Papers based on theory and experiment are interspersed with case studies. Until recently, gravel-bed rivers have been under-researched, when compared with sand-bed rivers. There is a heightened interest in these rivers now, due to pressure from water resources, forestry and recreational development in upland areas.
Download or read book Computational Fluid Dynamics written by Paul D. Bates and published by John Wiley & Sons. This book was released on 2005-08-05 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Uniquely outlines CFD theory in a manner relevant to environmental applications. This book addresses the basic topics in CFD modelling in a thematic manner to provided the necessary theoretical background, as well as providing global cases studies showing how CFD models can be used in practice demonstrating how good practice can be achieved , with reference to both established and new applications. First book to apply CFD to the environmental sciences Written at a level suitable for non-mathematicians
Download or read book Rivers and Floodplains written by John S. Bridge and published by John Wiley & Sons. This book was released on 2009-04-01 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rivers and Floodplains is concerned with the origin, geometry, water flow, sediment transport, erosion and deposition associated with modern alluvial rivers and floodplains, how they vary in time and space, and how this information is used to interpret deposits of ancient rivers and floodplains. There is specific reference to the types and lifestyles of organisms associated with fluvial environments, human interactions with rivers and floodplains, associated environmental and engineering concerns, as well as the economic aspects of fluvial deposits, particularly the modeling of fluvial hydrocarbon reservoirs and aquifers. Methods of studying rivers and floodplains and their deposits are also discussed. Although basic principles are emphasized, many examples are detailed. Particular emphasis is placed on how an understanding of the nature of modern rivers and floodplains is required before any problems concerning rivers and floodplains, past or present, can be addressed rationally. Rivers and Floodplains is designed as a core text for senior undergraduate and graduate students studying modern or ancient fluvial environments, particularly in earth sciences, environmental sciences and physical geography, but also in civil and agricultural engineering. College teachers, researchers, and practising professionals will also find the book an invaluable reference. Presents a process-based approach, which is relevant to modern curricula. Discusses methods of studying rivers and floodplains and their deposits. Provides many detailed examples throughout the text. Emphasises the basic principles of this subject. As the first synthesis of this entire field, it will be a must-have for all students studying modern or ancient fluvial environments. Teachers, researchers and practising professionals will find this an invaluable reference tool. Rivers and Floodplains will also be of interest to geologists, geographers and engineers.
Download or read book Design and Maintenance of a Network for Collecting High Resolution Suspended Sediment Data at Remote Locations on Rivers with Examples from the Colorado River written by Ronald E. Griffiths and published by CreateSpace. This book was released on 2014-06-23 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Management of sand and finer sediment in fluvial settings has become increasingly important for reasons ranging from endangered-species habitat to transport of sediment-associated contaminants. In all rivers, some fraction of the suspended load is transported as washload, and some as suspended bed material. Typically, the washload is composed of silt-and-clay- size sediment, and the suspended bed material is composed of sand-size sediment. In most rivers, as a result of changes in the upstream supply of silt and clay, large, systematic changes in the concentration of the washload occur over time, independent of changes in water discharge.
Download or read book Numerical Aspects of Bed Level Predictions for Alluvial River Bends written by C. Flokstra and published by . This book was released on 1981 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Erosion and Sediment Yield written by Jonathan B. Laronne and published by . This book was released on 1982 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theoretical Morphodynamics Straight Channels written by Giovanni Seminara and published by Firenze University Press. This book was released on 2024-03-15 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph presents the mechanistic foundations of the theory of Morhodynamics, a discipline that investigates the shape of the erodible boundary of natural water bodies. We focus on the fluvial Morphodynamics of straight erodible channels, providing the basis for subsequent extensions to meandering rivers (treated in the companion monograph 2 of this series) and braided rivers. We present basic notions on the Mechanics of Turbulent Flows and Sediment Transport in straight open channels with mobile beds. We then investigate their morphodynamic equilibrium and its instability, that leads to the formation of a variety of bedforms observed in natural rivers. In particular, fluvial bars will deserve special attention as the fundamental building block of large scale fluvial patterns.
