Gravel Bed Rivers Vi From Process Understanding To River Restoration 6th Gravel Bed Rivers Conference St Jakob Id Austria 2005 PDF Download
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Author | : H. Habersack |
Publisher | : Elsevier |
Total Pages | : 837 |
Release | : 2011-09-22 |
Genre | : Science |
ISBN | : 0080553591 |
Download Gravel Bed Rivers 6 Book in PDF, ePub and Kindle
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
Author | : Peter C. Klingeman |
Publisher | : Water Resources Publication |
Total Pages | : 872 |
Release | : 1998 |
Genre | : Nature |
ISBN | : 9781887201131 |
Download Gravel-bed Rivers in the Environment Book in PDF, ePub and Kindle
"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.
Author | : Michael Church |
Publisher | : John Wiley & Sons |
Total Pages | : 605 |
Release | : 2012-02-10 |
Genre | : Nature |
ISBN | : 1119954258 |
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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.
Author | : Daizo Tsutsumi |
Publisher | : John Wiley & Sons |
Total Pages | : 846 |
Release | : 2017-04-25 |
Genre | : Science |
ISBN | : 1118971418 |
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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.
Author | : Richard D. Hey |
Publisher | : |
Total Pages | : 904 |
Release | : 1982 |
Genre | : Nature |
ISBN | : |
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A collection of papers by an international group of experts that clarifies the physical processes operating in gravel-bed rivers. Identifies engineering and management techniques based on natural flow processes to minimize the effect of river engineering and water resource development on river systems. Promotes improved design and modelling methods. Discusses future research requirements.
Author | : M. Paul Mosley |
Publisher | : |
Total Pages | : 656 |
Release | : 2001 |
Genre | : Nature |
ISBN | : |
Download Gravel-bed Rivers V Book in PDF, ePub and Kindle
Author | : P. Billi |
Publisher | : |
Total Pages | : 696 |
Release | : 1992 |
Genre | : Nature |
ISBN | : |
Download Dynamics of Gravel-bed Rivers Book in PDF, ePub and Kindle
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.
Author | : R. D. Hey |
Publisher | : |
Total Pages | : 0 |
Release | : 1985 |
Genre | : |
ISBN | : |
Download Gravel-Bed Rivers Book in PDF, ePub and Kindle
Author | : Lee R. Harrison |
Publisher | : ProQuest |
Total Pages | : 360 |
Release | : 2007 |
Genre | : |
ISBN | : 9780549268871 |
Download The Role of Stage on Flow and Sediment Transport in Gravel-bed Rivers with Pool-riffle Morphology Book in PDF, ePub and Kindle
Lses of sediment. The experimental results are reproduced by a 2.5D flow, sediment transport and morphologic evolution model. Collectively, these findings highlight the stage-dependent nature of flow and sediment transport in gravel-bed rivers with pool-riffle morphology, and have broad implications for river restoration projects aimed at enhancing the physical and biological integrity of fluvial ecosystems.
Author | : Benjamin Douglas Plumb |
Publisher | : |
Total Pages | : 170 |
Release | : 2017 |
Genre | : Bed load |
ISBN | : |
Download Impacts of Hydromodification and Sediment Supply Alterations on Bedload Transport and Bed Morphology in Urbanizing Gravel-bed Rivers Book in PDF, ePub and Kindle
Urbanization is known to change the hydrologic and sediment supply regimes of rivers, causing more frequent, flashier flood events (hydromodification) and a reduction and redistribution of sediment sources. Presently, the impact that these changes have on bedload transport in gravel-bed channels and the resulting impact on bed morphology remains largely unknown due to a lack of process based studies. A better understanding of how riverbed form and processes evolve with urbanization is critical as they are a primary factor in controlling stream stability, providing habitat for aquatic species and influencing flood elevations. Additionally, stream rehabilitation is becoming increasingly common in urban rivers and an understanding of how sediment transport dynamics change with the alterations common to urbanization is critical for a successful design. This thesis explores the impact of urbanization, which is the combination of hydromodification and alterations to sediment supply, on the morphodynamics (linkages between channel form and process) of bedforms in gravel-bed rivers. Specific objectives are: 1) to determine if detectable differences in bed morphology exist between rural and urban rivers in the same hydrophysiographic region; 2) to characterize the sediment transport dynamics of a highly urbanized channel; 3) to investigate the differences in geomorphically significant flows and sediment transport characteristics for different levels of watershed urbanization; and 4) to generalize field specific results using a mobile-bed laboratory flume to investigate the sediment transport characteristics for different levels of watershed hydromodification. Longitudinal profiles of 11 rural and 9 urban watercourses with pool-riffle dominated morphologies in the same hydrophysiographic region (Southern Ontario, Canada) were investigated using three objective bedform identification methods; zero-crossing analysis, bedform differencing technique and residual pool depth analysis, as well as visual field identification. Results indicate that urban rivers possess deeper pools and a more topographically variable bed. A field investigation was undertaken to characterize event-based sediment transport dynamics of a highly urbanized gravel-bed river over a three year period. Mimico Creek, located in Toronto, Ontario, Canada, is nearly fully urbanized and lacks significant stormwater management controls, therefore making it a representative study reach. Bedload transport was measured using both active and passive sampling methods to characterize the mobility and transport dynamics of the entire range of surface particles. During this time, over 10 floods were sampled ranging from the approximate threshold discharge to well over the bankfull discharge. Coarse particle mobility differed from that previously reported in literature for rivers with more natural flow regimes. A strong link was found between coarse particle mobility and the transport dynamics of finer material which tends to dominate the bedload. The measured bedload transport data were also used to calibrate a fractional sediment transport model which was combined with hydrometric data corresponding to different levels of watershed urbanization to perform a geomorphic work analysis. Urbanization is increasing the frequency, volume and time of competent discharge events (capable of performing work on the channel). Greater increases of intermediate discharge events were observed. Less urban streams are more influenced by larger discharge events, while urbanization is shifting the geomorphic significance to lower (but still competent) discharges. Inspired from the field observations, an unsteady flow laboratory experiment was conducted to provide more generalized results. Three land-use scenarios representing different levels of watershed urbanization were developed from measured hydrometric data. Results show that both unsteady bedload transport dynamics and resulting bed morphology change with different levels of urbanization. Shorter duration hydrographs (corresponding to urban conditions) possess higher transport rates, less pronounced bedload hysteresis loops and more topographic variability of the bed. A proposed parameter for evaluating the degree of hysteresis shows sediment transport is closely linked with falling limb dynamics. The key conclusion from the field, modeling and laboratory studies is that bedforms in gravel-bed rivers appear to be evolving to a state with more topographic variability. This variability is hypothesized to be additional form roughness to dissipate energy introduced due to hydromodification. These results are unique in literature and further our understanding of urban river processes.