Gravel bed Rivers in the Environment

Gravel bed Rivers in the Environment Author Peter C. Klingeman
ISBN-10 1887201130
Release 1998-01-01
Pages 832
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"Read what over 60 internationally recognized authors say about fluvial processes, the environment, and management of gravel-bed rivers. Learn about efforts to restore more-natural ecosystem functions to adversely impacted rivers. And for some mind-stretching, consider the hydraulic/geomorphic implications of cataclysmic floods on Earth and Mars. Beginning in 1980 and held at five-year intervals, these workshops have brought together leading international researchers to present and discuss new results, concepts and state-of-the-art methods to analyze fluvial processes in and manage gravel-bed rivers. The fourth workshop was held at Gold Bar, Washington, near the dynamic Skykomish River and strikingly beautiful Cascade Mountains. Workshop papers and discussions are published to document new concepts and ideas for broad use by those who study, manage or have general interests in rivers. This fourth Gravel-Bed Rivers Workshop covers three focus topics. The first topic reviews new developments regarding fluvial processes, sediment transport and channel morphology -- in eight chapters on distinct subjects. The second and third focus topics strongly emphasize gravel-beds rivers in the environment, their influences, and their management -- in the next 19 chapters. River restoration is examined for large European and North American rivers as parts of several of the environment-management chapters. Seven appended "short papers" report on research in progress, presented at the Workshop in a poster-discussion session. Also included are two special-interest chapters -- on giving a detailed analysis and morphologic/hydraulic interpretation of cataclysmic floods and one summarizing a field exercise in management options for a long braided-meandering reach of the Skykomish River near Gold Bar."--Publisher's description.



Gravel Bed Rivers

Gravel Bed Rivers Author Michael Church
ISBN-10 9781119954255
Release 2012-02-10
Pages 512
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Gravel-Bed Rivers: Processes, Tools, Environments presents a definitive review of current knowledge of gravel-bed rivers, derived from the 7th International Gravel-bed Rivers Workshop, the 5-yearly meeting of the world’s leading authorities in the field. Each chapter in the book has been specifically commissioned to represent areas in which recent progress has been made in the field. The topics covered also represent a coherent progression through the principal areas of the subject (hydraulics; sediment transport; river morphology; tools and methods; applications of science). Definitive review of the current knowledge of gravel-bed rivers Coverage of both fundamental and applied topics Edited by leading academics with contributions from key researchers Thoroughly edited for quality and consistency to provide coherent and logical progression through the principal areas of the subject.



Dynamics of gravel bed rivers

Dynamics of gravel bed rivers Author P. Billi
ISBN-10 047192976X
Release 1992
Pages 673
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Contains articles by leading international experts in their respective fields. Papers are grouped into 17 topics that cover fundamental and applied issues involving the considerable progress made on sediment transport dynamics. Recent research provides insights into subjects such as selective entrainment, equal mobility, armouring processes, transport of fine material, mathematical sediment transport and morphological models as well as the impact of engineering works and catchment development projects on channel stability.



Sediment transport in gravel bed rivers

Sediment transport in gravel bed rivers Author Colin R. Thorne
ISBN-10 0471909149
Release 1987-09-28
Pages 995
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The heightened interest in gravel-bed rivers among scientists and engineers has been spurred by recent industrial utilization of water resources and forests in upland areas, as well as developmenat of these lands for recreational use. This book describes and quantifies the movement and storage of sediment in rivers with gravel-bed material based upon scientific and engineering principles. The material includes a selection of papers presented at a recent symposium, along with several discussions which develop and broaden coverage. Topics cover both theory and experimental findings, plus several case studies.



Gravel Bed Rivers

Gravel Bed Rivers Author Daizo Tsutsumi
ISBN-10 9781118971420
Release 2017-04-27
Pages 832
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With contributions from key researchers across the globe, and edited by internationally recognized leading academics, Gravel-bed Rivers: Processes and Disasters presents the definitive review of current knowledge of gravel-bed rivers. Continuing an established and successful series of scholarly reports, this book consists of the papers presented at the 8th International Gravel-bed Rivers Workshop. Focusing on all the recent progress that has been made in the field, subjects covered include flow, physical modeling, sediment transport theory, techniques and instrumentation, morphodynamics and ecological topics, with special attention given to aspects of disasters relevant to sediment supply and integrated river management. This up-to-date compendium is essential reading for geomorphologists, river engineers and ecologists, river managers, fluvial sedimentologists and advanced students in these fields.



Gravel Bed Rivers 6

Gravel Bed Rivers 6 Author H. Habersack
ISBN-10 0080553591
Release 2011-09-22
Pages 836
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Based on the interdisciplinary approaches between earth science, engineering, physical geography, ecology and management, this text focuses on the theoretical questions, case-studies, challenges, and constraints taken from river restoration. It is illustrated with reports of new ground-breaking research covering spatial and temporal scales of physical processes in river catchments, coupling catchment and fluvial processes, grain dynamics and fluvial forms and on geo-ecology and restoration in mountain gravel-bed river environments. Each chapter includes discussions and comments providing experience and feedback from the fundamental research. This book covers scales of analysis for gravel-bed rivers, physics and modeling of processes at local and point scales, sediment delivery and storage, eco-geography and eco-hydraulics, and channel management and restoration. * Major topics in the field are presented by recognized scientific leaders * Chapters cover theories, practices, and methodologies in river management and restoration * Interdisciplinary approach includes case-studies on new, ground-breaking research



Gravel bed rivers V

Gravel bed rivers V Author New Zealand Hydrological Society
ISBN-10 STANFORD:36105026551395
Release 2001-01-01
Pages 642
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Gravel bed rivers V has been writing in one form or another for most of life. You can find so many inspiration from Gravel bed rivers V also informative, and entertaining. Click DOWNLOAD or Read Online button to get full Gravel bed rivers V book for free.



Gravel Bed Rivers VI

Gravel Bed Rivers VI Author Massimo Rinaldi
ISBN-10 044452861X
Release 2008
Pages 817
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Based on the interdisciplinary approaches between earth science, engineering, physical geography, ecology and management, this text focuses on the theoretical questions, case-studies, challenges, and constraints taken from river restoration. It is illustrated with reports of new ground-breaking research covering spatial and temporal scales of physical processes in river catchments, coupling catchment and fluvial processes, grain dynamics and fluvial forms and on geo-ecology and restoration in mountain gravel-bed river environments. Each chapter includes discussions and comments providing experience and feedback from the fundamental research. This book covers scales of analysis for gravel-bed rivers, physics and modeling of processes at local and point scales, sediment delivery and storage, eco-geography and eco-hydraulics, and channel management and restoration. * Major topics in the field are presented by recognized scientific leaders * Chapters cover theories, practices, and methodologies in river management and restoration * Interdisciplinary approach includes case-studies on new, ground-breaking research



Gravel bed Rivers Workshop

Gravel bed Rivers Workshop Author
ISBN-10 OCLC:637767661
Release 1982
Pages
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Gravel bed Rivers Workshop has been writing in one form or another for most of life. You can find so many inspiration from Gravel bed Rivers Workshop also informative, and entertaining. Click DOWNLOAD or Read Online button to get full Gravel bed Rivers Workshop book for free.



Design of river restoration projects on gravel bed rivers emphasizing riparian revegetation

Design of river restoration projects on gravel bed rivers emphasizing riparian revegetation Author W. V. Graham Matthews
ISBN-10 UCSC:32106008679844
Release 1990
Pages 152
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Design of river restoration projects on gravel bed rivers emphasizing riparian revegetation has been writing in one form or another for most of life. You can find so many inspiration from Design of river restoration projects on gravel bed rivers emphasizing riparian revegetation also informative, and entertaining. Click DOWNLOAD or Read Online button to get full Design of river restoration projects on gravel bed rivers emphasizing riparian revegetation book for free.



Mechanisms of Downstream Fining in Gravel Bed Rivers

Mechanisms of Downstream Fining in Gravel Bed Rivers Author Rebecca Seal
ISBN-10 MINN:31951D010868211
Release 1994
Pages 452
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Mechanisms of Downstream Fining in Gravel Bed Rivers has been writing in one form or another for most of life. You can find so many inspiration from Mechanisms of Downstream Fining in Gravel Bed Rivers also informative, and entertaining. Click DOWNLOAD or Read Online button to get full Mechanisms of Downstream Fining in Gravel Bed Rivers book for free.



Meandering in Gravel Bed Rivers

Meandering in Gravel Bed Rivers Author Christian Arthur Braudrick
ISBN-10 OCLC:957713432
Release 2013
Pages 219
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It is surprising that gravel-bed rivers meander. In laboratory settings using cohesionless sediment transported as bedload, braiding inevitably emerges. The easily entrained outer bank sediments lead to relatively rapid bank erosion, the inner bank bar reaches it shallowest depth towards the center of the channel, the flow diverges, and braiding arises. These observations have led to the inference that meandering requires some bank strength to slow outer bank erosion and allow the inner bank to keep pace with outer bank retreat. Commonly it has been suggested that vegetation can provide that outer bank strength. While this view has led recently to numerical modeling incorporating vegetation strength, no studies had successfully created meandering rivers in the laboratory such that controlling mechanisms could be explored. Nor has there been an effort to delineate under what general conditions gravel bedded meanders are found in the field. These knowledge gaps are particularly important to stream restoration work because the creation of morphologically-stable gravel-bedded meanders is a common goal. This dissertation uses flume experiments and a compilation of field data to explore the conditions that support meandering in gravel-bed rivers. Using alfalfa sprouts as model vegetation, sand as scaled-down gravel, and a lightweight plastic as scaled-down sand, I created for the first time a self-maintaining, laterally migrating meandering river with cutoff loops in a 6.1-m wide, 17-m long laboratory flume. The channel, 0.4 m wide, had a sinuosity of 1.1-1.2 and transported sediment with a median size of 0.78 mm. The sinuosity of the channel increased as bends grew, decreased as the channel cut off, and was regenerated while the channel maintained a steady width. In this experiment, we found that a steady bankfull flow was sufficient to sustain a meandering planform, and that application of higher peak flows caused the channel to widen because bank erosion outpaced bar growth. Coarse sediment was exchanged between eroding banks and the next bar downstream with little net downstream flux, consequently to prevent aggradation and avulsion at the upstream end of the experimental reach required turning off the coarse sediment feed. The input of fine sediment was crucial for blocking chute channels (a locus for braiding), filling point bars downstream of the bend apex, and plugging abandoned channels following cutoff. Hence, sustained growth of bends and development of meandering requires more than just sufficient bank strength to slow the outer bank erosion rate. A compilation of 166 gravel-bedded meanders from the literature shows that gravel meanders primarily occur in lower gradient reaches extending from mountain ranges, high-elevation valleys, and in humid areas influenced by glaciation or glacio-fluvial outwash. Unexpectedly, analysis of Google Earth imagery showed that about 1/3 of the dataset lacked cutoff scars and other evidence of active migration. Gravel bedded meanders with median surface grain size> 10 mm had low Shields stress, particularly for meanders with cutoffs and without islands. Gravel bedded meanders with median surface grain sizes



Gravel Bed Rivers

Gravel Bed Rivers Author Richard David Hey
ISBN-10 0598031650
Release
Pages 891
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Sediment Movement in Gravel Bed Rivers

Sediment Movement in Gravel Bed Rivers Author Malcolm David Newson
ISBN-10 OCLC:22746416
Release 1990
Pages 43
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Microforms in Gravel Bed Rivers

Microforms in Gravel Bed Rivers Author Kyle B. Strom
ISBN-10 OCLC:51320836
Release 2002
Pages 172
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Microforms in Gravel Bed Rivers has been writing in one form or another for most of life. You can find so many inspiration from Microforms in Gravel Bed Rivers also informative, and entertaining. Click DOWNLOAD or Read Online button to get full Microforms in Gravel Bed Rivers book for free.



FLOW RESISTANCE IN COARSE GRAVEL BED RIVERS A DISCUSSION

FLOW RESISTANCE IN COARSE GRAVEL BED RIVERS A DISCUSSION Author Jacques Bruschin
ISBN-10 OCLC:965665875
Release 1982
Pages 2
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FLOW RESISTANCE IN COARSE GRAVEL BED RIVERS A DISCUSSION has been writing in one form or another for most of life. You can find so many inspiration from FLOW RESISTANCE IN COARSE GRAVEL BED RIVERS A DISCUSSION also informative, and entertaining. Click DOWNLOAD or Read Online button to get full FLOW RESISTANCE IN COARSE GRAVEL BED RIVERS A DISCUSSION book for free.



Bed Surface Patchiness in Gravel Bed Rivers

Bed Surface Patchiness in Gravel Bed Rivers Author Peter August Nelson
ISBN-10 OCLC:769458823
Release 2010
Pages 328
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Gravel-bed rivers commonly display distinct sorting patterns on their beds. Visually, this heterogeneity often appears to form an organization of textural patches or facies. Patches can be distinguished into & ldquofree patches," which are zones of sorted material that move freely, such as bedload sheets; & ldquoforced patches," which are areas of sorting forced by topographic controls; and & ldquofixed patches" of bed material rendered immobile through localized coarsening that remain fairly persistent through time. The local bed surface grain size, and therefore bed surface patchiness, exerts considerable influence on local bed mobility, bedload transport rates, hydrodynamic roughness, and benthic microhabitats. Despite the ecological and morphodynamic importance of bed surface patchiness, we lack accurate and objective methods to delineate patches, and have little understanding of how patches form, evolve, and interact. This dissertation investigates the mechanisms responsible for the formation of bed surface patches. First, two sets of flume experiments are used to explore how fixed and free patches respond to reductions in sediment supply, and to show that sediment supply is a primary control on the distribution of fixed patches and the dynamics of bedload sheets. A near-field scale flume experiment is then used to show how bed topography, the flow field, and the sediment transport field interact to form forced patches. Size-selective, cross-stream sediment transport is shown to be a critical mechanism responsible for the development of forced bed surface patches. A high-resolution dataset of spatial grain size distributions collected during this experiment is then analyzed with several clustering methods to develop an objective method of delineating patches. These analyses suggest that rivers have a tendency to form a finite number of patch types that become distributed throughout the reach. Lastly, a two-dimensional morphodynamic model simulating flow, mixed-grain size sediment transport, and bed evolution is presented and used to show that forced patches interact with the evolving bed and, through their effects on the flow field, have a considerable impact on morphologic evolution.