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Author: Carissa L. Carter
Publisher:
ISBN:
Category :
Languages : en
Pages : 290
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Author: Carissa L. Carter
Publisher:
ISBN:
Category :
Languages : en
Pages : 290
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Book Description
Author: Nick Richmond
Publisher:
ISBN:
Category : Hydrogeology
Languages : en
Pages : 168
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Book Description
Author: Gregory Scott Hancock
Publisher:
ISBN:
Category : Erosion
Languages : en
Pages : 442
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Book Description
Author: Keith J. Tinkler
Publisher: American Geophysical Union
ISBN: 0875900909
Category : Science
Languages : en
Pages : 325
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Book Description
Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 107. Bedrock river channels are sites of primary erosion in the landscape, fixing the baselevel for all points upstream. This volume provides for the first time an integrated view of the characteristics and operation of this important, though hitherto neglected, class of channels. Examples are provided from several continents and cover a wide range of spatial scales from the large river basins (such as the Colorado River in the United States and the Indus River in Pakistan) down to reach scales and individual sites. Likewise the geologic timescales considered range from erosion and transportation during individual flows to accumulated effects over periods of tens of millions of years.
Author: Brendan P. Murphy
Publisher:
ISBN:
Category : Erosion
Languages : en
Pages : 230
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Book Description
Author: Keith J. Tinkler
Publisher: American Geophysical Union
ISBN: 0875900909
Category : Science
Languages : en
Pages : 325
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Book Description
Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 107. Bedrock river channels are sites of primary erosion in the landscape, fixing the baselevel for all points upstream. This volume provides for the first time an integrated view of the characteristics and operation of this important, though hitherto neglected, class of channels. Examples are provided from several continents and cover a wide range of spatial scales from the large river basins (such as the Colorado River in the United States and the Indus River in Pakistan) down to reach scales and individual sites. Likewise the geologic timescales considered range from erosion and transportation during individual flows to accumulated effects over periods of tens of millions of years.
Author: Daizo Tsutsumi
Publisher: John Wiley & Sons
ISBN: 111897140X
Category : Science
Languages : en
Pages : 850
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Book Description
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: Bruce L. Rhoads
Publisher: Cambridge University Press
ISBN: 1108173780
Category : Science
Languages : en
Pages : 544
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Book Description
Rivers are important agents of change that shape the Earth's surface and evolve through time in response to fluctuations in climate and other environmental conditions. They are fundamental in landscape development, and essential for water supply, irrigation, and transportation. This book provides a comprehensive overview of the geomorphological processes that shape rivers and that produce change in the form of rivers. It explores how the dynamics of rivers are being affected by anthropogenic change, including climate change, dam construction, and modification of rivers for flood control and land drainage. It discusses how concern about environmental degradation of rivers has led to the emergence of management strategies to restore and naturalize these systems, and how river management techniques work best when coordinated with the natural dynamics of rivers. This textbook provides an excellent resource for students, researchers, and professionals in fluvial geomorphology, hydrology, river science, and environmental policy.
Author: Maxwell T. Cunningham
Publisher:
ISBN:
Category :
Languages : en
Pages : 97
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Book Description
The rate at which landscapes evolve is limited by erosion in bedrock-floored channels in many settings, yet our understanding of erosion rates in bedrock channels remains incomplete. Numerical modeling suggests that variable erodibility in bedrock channels at the cross sectional scale, generally ignored in most bedrock channel evolution models, influences equilibrium channel geometry and slope. We explore rock erodibility and channel geometry and slope along the longitudinal profile of a bedrock river. Assuming that rock strength is an adequate proxy for rock erodibility (Sklar and Dietrich, 2001), we measured in situ rock compressive strength using a Type N Schmidt hammer at 17 cross sections along a ~2 km segment of Renick Run, a channel floored by limestone in western Virginia. We observe a statistically significant decrease in average rock compressive strength between the thalweg and channel margins in 14 of 17 cross sections, with maximum decrease in average rock compressive strength ranging from 21- 58% in individual cross sections. Average rock compressive strength also varies across bedrock meanders, where rock compressive strength is greater on the inside of meanders than on the outside of meanders. We speculate that variability in rock erodibility is produced by subaerial weathering that acts preferentially on channel margins and the outside of bedrock meanders. We do not observe a correlation between variable rock erodibility and channel geometry and slope, but we present evidence suggesting a correlation between variable rock erodibility and stream sinuosity. Comparisons of rock compressive strength in channel cross sections to rock of the same lithology exposed on hillslopes show that rock in the channel has both greater and lower compressive strength than hillslope rock.
Author: Keith Richardson
Publisher: Geological Society of America
ISBN: 0813723922
Category : Science
Languages : en
Pages : 116
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Book Description
