Rivers Over Rock
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Rivers Over Rock
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Author : Keith J. Tinkler
language : en
Publisher: American Geophysical Union
Release Date : 1998-02-04
Rivers Over Rock written by Keith J. Tinkler and has been published by American Geophysical Union this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-02-04 with Science categories.
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.
Of Rock And Rivers
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Author : Ellen Wohl
language : en
Publisher: Univ of California Press
Release Date : 2009-06-08
Of Rock And Rivers written by Ellen Wohl and has been published by Univ of California Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-06-08 with Nature categories.
This deeply personal collection of essays paints a progressive view of the American West as seen by a geologist. The author traces her twenty years of living and conducting research in the natural landscapes of the West as she investigates the conflict between environmental history and widely held romanticized views of the region.
Rivers In The Landscape
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Author : Ellen Wohl
language : en
Publisher: John Wiley & Sons
Release Date : 2020-02-10
Rivers In The Landscape written by Ellen Wohl and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-02-10 with Science categories.
Rivers are the great shapers of terrestrial landscapes. Very few points on Earth above sea level do not lie within a drainage basin. Even points distant from the nearest channel are likely to be influenced by that channel. Tectonic uplift raises rock thousands of meters above sea level. Precipitation falling on the uplifted terrain concentrates into channels that carry sediment downward to the oceans and influence the steepness of adjacent hill slopes by governing the rate at which the landscape incises. Rivers migrate laterally across lowlands, creating a complex topography of terraces, floodplain wetlands and channels. Subtle differences in elevation, grain size, and soil moisture across this topography control the movement of ground water and the distribution of plants and animals. Rivers in the Landscape, Second Edition, emphasizes general principles and conceptual models, as well as concrete examples of each topic drawn from the extensive literature on river process and form. The book is suitable for use as a course text or a general reference on rivers. Aimed at advanced undergraduate students, graduate students, and professionals looking for a concise summary of physical aspects of rivers, Rivers in the Landscape is designed to: emphasize the connectivity between rivers and the greater landscape by explicitly considering the interactions between rivers and tectonics, climate, biota, and human activities; provide a concise summary of the current state of knowledge for physical process and form in rivers; reflect the diversity of river environments, from mountainous, headwater channels to large, lowland, floodplain rivers and from the arctic to the tropics; reflect the diverse methods that scientists use to characterize and understand river process and form, including remote sensing, field measurements, physical experiments, and numerical simulations; reflect the increasing emphasis on quantification in fluvial geomorphology and the study of Earth surfaces in general; provide both an introduction to the classic, foundational papers on each topic, and a guide to the latest, particularly insightful and integrative references.
Lolo National Forest N F Suitability Study And Eis For Eight Rivers On The Lolo National Forest N F For Inclusion National Wild And Scenic River Nwsr System Lewis Clark County Missoula County Powell County Ravalli County Sanders County
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Author :
language : en
Publisher:
Release Date : 1996
Lolo National Forest N F Suitability Study And Eis For Eight Rivers On The Lolo National Forest N F For Inclusion National Wild And Scenic River Nwsr System Lewis Clark County Missoula County Powell County Ravalli County Sanders County written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with categories.
Rock Strength And Sediment Controls On Bedrock River Incision In The Taiwan Central Range
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Author : Julia Carr
language : en
Publisher:
Release Date : 2022
Rock Strength And Sediment Controls On Bedrock River Incision In The Taiwan Central Range written by Julia Carr and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with categories.
Bedrock rivers shape the surface of the planet and respond to changes in tectonic and climatic forcings. The rate of bedrock river incision is set by the local channel morphology, rock material strength, and the flux and caliber of sediment in the landscape. Both the erodibility of in-channel bedrock and the grain size of sediment supplied to the channel can be influenced by rock properties, leading to a complex suite of local and non-local lithologic controls on channel morphology. Quantifying each property at the landscape scale is challenging, as rock strength and channel morphology can vary over small spatial scales, and local sediment properties vary over time. Recent advances in small uncrewed aerial vehicle (UAV) technology and structure from motion photogrammetry enable mapping at high enough resolution to resolve patterns in sediment cover, channel geometry, and rock properties, while mapping across large enough spatial scales to integrate across reach scale heterogeneity. In addition, repeat surveys enable tracking sediment transport and channel adjustment through time. Here, I take advantage of natural gradients in metamorphic grade and exhumation depth in the Taiwan Central Range to characterize how rock material properties develop across an orogen and influence channel morphology and sediment. Paired UAV photogrammetry and field surveys span over 53 kilometers of river channel, with 30 km confined to of bedrock-bound channels, and over 10 kilometers of repeat surveys. These surveys sample systematically across all formations and lithologies present in the range. I directly measured channel morphology and sediment cover in each surveyed channel and tributary from 1-5 cm resolution 3D models and orthoimagery. I then use repeat surveys to analyze patterns in clast mobility. These measurements reveal that the size and number of boulders supplied to the channel from hillslope mass wasting systematically increase across both the west to east gradient in metamorphic grade and the south to north gradient in exhumation depth. Channel morphology (slope, width, and depth) is highly variable both within individual reaches, and across the orogen. The increase in boulder size locally steepens the channel, implying that the addition of coarse sediment increases thresholds for incision. However, while the measured grain sizes and slopes both increase from south to north, there is no observed trend in orogen scale relief. On the other hand, while Taiwan has substantial variation in channel width, boulder abundance and size do not set channel width at the reach or orogen scale. Instead, variations in channel width are primarily controlled by bedrock anisotropy and variations in bedrock wall lithology. Finally, repeat surveys reveal that boulder transport and abrasion occurs during 1-3 year storm events. Bed reorganization enhances boulder abrasion, and the selective transport of large clasts imply that boulder residence time in this system is likely shorter than the timescale of bedrock river incision. Ultimately, high resolution surveys reveal local and regional controls on bedrock river incision, set by the interplay of rock strength, sediment, and channel morphology. These observations provide a critical link between theory derived from physics at the local scale, and models of erosion at the landscape scale.
Gravel Bed Rivers
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Author : Daizo Tsutsumi
language : en
Publisher: John Wiley & Sons
Release Date : 2017-04-25
Gravel Bed Rivers written by Daizo Tsutsumi and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-04-25 with Science categories.
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
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Author : Michael Church
language : en
Publisher: John Wiley & Sons
Release Date : 2012-02-10
Gravel Bed Rivers written by Michael Church and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-02-10 with Nature categories.
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.
Introducing Large Rivers
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Author : Avijit Gupta
language : en
Publisher: John Wiley & Sons
Release Date : 2020-03-09
Introducing Large Rivers written by Avijit Gupta and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-03-09 with Science categories.
An accessible introduction to large rivers, including coverage of the geomorphology, hydrology, ecology, and environments of large river systems This indispensible book takes a structured and global approach to the subject of large rivers, covering geomorphology, hydrology, ecology, and anthropogenic environment. It offers a thorough foundation for readers who are new to the field and presents enlightening discussions about issues of management at the worldwide scale. The book also examines possible future adaptations that may come about due to climate change. The book has benefitted from contributions by Professor W.J. Junk on the ecology of floodplains and Professor Olav Slaymaker on the large arctic rivers. Introducing Large Rivers is presented in three parts. Part 1 provides an introduction to the world’s large rivers and their basins. It covers source, transfer, and storage of their water and sediment; Pleistocene inheritance; the ecology of channels and floodplains; deltas; and more. Several large rivers are discussed in the next part. These include the Amazon Mississippi, Nile, Ganga-Brahmaputra System, Mekong, and Yangtze. The last part examines changes in large rivers and our management of river systems. It studies anthropogenic alterations such as land use and deforestation in large river basins; structural control systems like dams and reservoirs on channels; and ecological changes. It finishes with chapters on the management of large rivers, covering both technical and political aspects, and the future of the world’s big river systems. Introducing Large Rivers is ideal as an introductory textbook on large rivers for future earth and environmental scientists and river managers. It will also benefit advanced undergraduate and graduate students studying geography, geology, ecology, and river management.
Large Rivers
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Author : Avijit Gupta
language : en
Publisher: John Wiley & Sons
Release Date : 2022-03-28
Large Rivers written by Avijit Gupta and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-03-28 with Science categories.
An updated treatment of management and geomorphology of large rivers around the world The newly revised Second Edition of Large Rivers: Geomorphology and Management delivers a thoroughly updated exploration of the form and function of major rivers. The book brings together a set of papers on the large rivers of the world, offering readers an insightful examination of a demanding subject. The new Second Edition of the book includes fully updated and revised chapters, as well as two entirely new chapters on the Ayeyarwady and the Arctic rivers. This fascinating volume describes the environmental requirements for creating and maintaining a major river system, case studies on over a dozen large rivers from different continents in a variety of physical environments, and the measurement and management of large rivers. Unmatched in scope, Large Rivers sheds light on a subject lacking in comprehensive study. Readers will benefit from the inclusion of: A thorough introduction to the geology of large river systems, hydrology and discharge, transcontinental moving and storage of sediment, and the greatest floods and largest rivers An exploration of the classification, architecture, and evolution of large-river deltas Discussions of sedimentology and stratigraphy of large river deposits, including their recognition in the ancient record and the distinction from incised valley fills An examination of the effects of tectonism, climate change, and sea-level change on the form and behavior of the modern Amazon river and its floodplain Measurement and management of large rivers The effect of climatic change on large rivers Perfect for postgraduate students and researchers in fluvial geomorphology, hydrology, sedimentary geology, and river management, Large Rivers: Geomorphology and Management will also earn a place in the libraries of engineers and environmental consultants in the private and public sectors working on major rivers around the world.
Geological Report Of The Exploration Of The Yellowstone And Missouri Rivers
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Author : Ferdinand Vandeveer Hayden
language : en
Publisher:
Release Date : 1869
Geological Report Of The Exploration Of The Yellowstone And Missouri Rivers written by Ferdinand Vandeveer Hayden and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1869 with Geology categories.