Download or read book Sediment Transport and Channel Morphology in a Small Mountain Stream in Western Oregon written by Richard Earl Edwards and published by . This book was released on 1979 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sediment transport measurements on Flynn Creek, a headwater stream in the Oregon Coast Range, have illustrated the magnitude of fluvial transfer processes, primarily of the bedload component, during a moderate storm runoff season (1979 water year). The total dissolved solids concentration of storm runoff averaged 40 mg/L, and was independent of water discharge. Most particulate export from the 202 ha forested watershed occurred during the annual peak flow of 0.75 m3/sec-km2 (2-year return interval). Suspended load was the most important transport mode, with a total yield of 5.7 x l04 kg during the 24 h peak flow period. The export of coarse particulate organic matter during the same period was 1.5 x 103 kg. Bedload discharge, as measured with vortex tube and Helley-Smith samplers, occurred in pulses of short duration that did not necessarily coincide with peak streamflow. For the same 24 h storm runoff period, the total bedload yield at the mouth of the watershed was only 2.6 x 103 kg (particles> 0.25 mm), and consisted primarily of sand-size material. Bedload discharge at an upstream site (1.3 x 104 kg) was dominated by gravel-size particles. Channel morphology and in-stream obstructions (organic debris, fish trap) appear to cause significant spatial and temporal variations in sediment transport and streambed composition. Although streamflow was the principal variable controlling sediment transport, results suggest that supply limitations exist. The supply of transportable materials is dependent on the retention characteristics of the stream channel and on local hydraulic conditions. The discharge of both suspended solids and coarse particulate organic matter peaked early in the storm; however, pulses of the latter component on the recession limb appeared to be related to streambed disturbances. Bedload movement is an important process regulating both bed composition and particulate yields in this Coast Range stream. The Helley-smith sampler was the preferable method for use in streams having a large fraction of bedload in the sand-size range. The vortex tube trapped from 60-70% of the bedload sediment measured by an upstream Helley-smith sampler, with trapping efficiency of the former increasing as transport increased. The variability in bedload movement suggests that monitoring designs must address: (1) rapid temporal fluctuations in bedload discharge, (2) variations in bedload transport along a stream, (3) lateral variations in bedload discharge at a cross section, and (4) the type of sampler used.
Download or read book History Physical Effects and Management Implications of Large Organic Debris in Western Oregon Streams written by Frederick John Swanson and published by . This book was released on 1976 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Large organic debris has historically been an important element in small mountain streams of the Pacific Northwest. The debris serves to slow the movement of water and inorganic and fine organic matter through the channel. Debris may remain in the channel for decades or longer, and tends to stabilize some sections of a streambed and stream banks while destabilizing other areas. The combination of clear cutting and the complete removal of large debris in a channel may deprive a stream of this natural feature of streams for a century or longer. The consequences are likely to be downcutting and channelization" of the stream, accelerated transport of fine organic and inorganic sediment, and a possible decrease in biological productivity of the stream ecosystem. Therefore, stream debris management during logging operations should include leaving undisturbed the natural, stable organic debris in the channel.??The principal factors controlling the concentration, stability, and functions of stream debris are the history and condition of the surrounding timber stand, flushing history of the channel, stability and abundance of bedload material, steepness of the channel and adjacent hillslopes, and slope stability in the drainage. Because of this complexity, each stream presents a unique situation, which should be inspected in the field and considered on an individual basis before a debris management decision is made."
Download or read book Transport of Bedload Sediment and Channel Morphology of a Southeast Alaska Stream written by Margaret A. Estep and published by . This book was released on 1985 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Treatise on Geomorphology written by and published by Academic Press. This book was released on 2013-02-27 with total page 6392 pages. Available in PDF, EPUB and Kindle. Book excerpt: The changing focus and approach of geomorphic research suggests that the time is opportune for a summary of the state of discipline. The number of peer-reviewed papers published in geomorphic journals has grown steadily for more than two decades and, more importantly, the diversity of authors with respect to geographic location and disciplinary background (geography, geology, ecology, civil engineering, computer science, geographic information science, and others) has expanded dramatically. As more good minds are drawn to geomorphology, and the breadth of the peer-reviewed literature grows, an effective summary of contemporary geomorphic knowledge becomes increasingly difficult. The fourteen volumes of this Treatise on Geomorphology will provide an important reference for users from undergraduate students looking for term paper topics, to graduate students starting a literature review for their thesis work, and professionals seeking a concise summary of a particular topic. Information on the historical development of diverse topics within geomorphology provides context for ongoing research; discussion of research strategies, equipment, and field methods, laboratory experiments, and numerical simulations reflect the multiple approaches to understanding Earth’s surfaces; and summaries of outstanding research questions highlight future challenges and suggest productive new avenues for research. Our future ability to adapt to geomorphic changes in the critical zone very much hinges upon how well landform scientists comprehend the dynamics of Earth’s diverse surfaces. This Treatise on Geomorphology provides a useful synthesis of the state of the discipline, as well as highlighting productive research directions, that Educators and students/researchers will find useful. Geomorphology has advanced greatly in the last 10 years to become a very interdisciplinary field. Undergraduate students looking for term paper topics, to graduate students starting a literature review for their thesis work, and professionals seeking a concise summary of a particular topic will find the answers they need in this broad reference work which has been designed and written to accommodate their diverse backgrounds and levels of understanding Editor-in-Chief, Prof. J. F. Shroder of the University of Nebraska at Omaha, is past president of the QG&G section of the Geological Society of America and present Trustee of the GSA Foundation, while being well respected in the geomorphology research community and having won numerous awards in the field. A host of noted international geomorphologists have contributed state-of-the-art chapters to the work. Readers can be guaranteed that every chapter in this extensive work has been critically reviewed for consistency and accuracy by the World expert Volume Editors and by the Editor-in-Chief himself No other reference work exists in the area of Geomorphology that offers the breadth and depth of information contained in this 14-volume masterpiece. From the foundations and history of geomorphology through to geomorphological innovations and computer modelling, and the past and future states of landform science, no "stone" has been left unturned!
Download or read book Mountain Geomorphology written by David R. Butler and published by Gulf Professional Publishing. This book was released on 2003 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mountain Geomorphology - Integrating Earth Systemspresents the papers of the 32nd Annual Binghamton Geomorphology Symposium, held in 2001 in advance of the United Nations-designated '2002 International Year of Mountains'.The three co-editors have collectively worked in mountain environments for over 70 years, and brought together internationally recognized experts in mountain geomorphology from 7 nations presenting research on mountain processes from around the world, including the USA, Canada, China, Europe, and South America.The volume utilizes Earth Systems as a unifying and organizing theme, examining the interactions of the four Earth "spheres" (Lithosphere, Biosphere, Atmosphere, and Hydrosphere) in the context of geomorphic processes in mountain environments. The volume is also a "Festschrift" in honor of Professor John D. "Jack" Vitek, long-time editor of Geomorphology and an outstanding mentor to each of the three co-editors. Papers presented in the volume represent cutting-edge examinations of mountain landforms, geomorphic processes in mountains, and the application of advanced remote sensing and Geographic Information Science technologies for the study of mountain geomorphology.The book should be of interest to all geomorphologists, and to physical geographers and geologists interested in mountain environments. Mountain Geomorphology - Integrating Earth Systemsis the only book of its kind, and stands as a testament to the importance of mountains as locations for studying the interaction of geomorphic processes within an Earth Systems perspective.
Download or read book The Effect of Channel Morphology and Lithology on Sediment Transport in Streams of the Teton Mountain Range Wyoming USA written by Amber J. Ritchie and published by . This book was released on 2012 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Streamflow Sediment transport and Water temperature Characteristics of Three Small Watersheds in the Alsea River Basin Oregon written by David Dell Harris and published by . This book was released on 1971 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Forest Practices on Peak Flows and Consequent Channel Response written by Gordon E. Grant and published by DIANE Publishing. This book was released on 2010-09 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes a database of relevant studies reporting peak flow data across rain-, transient-, and snow-dominated hydrologic zones. Provides a quantitative comparison of changes in peak flow across both a range of flows and forest practices. Increases in peak flows generally diminish with decreasing intensity of percentage of watershed harvested and lengthening recurrence intervals of flow. Peak flow effects on channel morphology should be confined to stream reaches where channel gradients are less than 0.02 and streambeds are composed of gravel and finer material. Managers should evaluate the potential risk of peak flow increases based on factors such as presence of roads, specific mgmt. treatments employed, and watershed drainage efficiency.
Download or read book Sediment Cascades written by Tim Burt and published by John Wiley & Sons. This book was released on 2010-01-07 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sediment Cascades: An Integrated Approach provides a comprehensive overview that addresses the transport of sediment through the landscape. Suitable for academic researchers, industry practitioners, research students and advanced level undergraduates, seeking detailed knowledge and an up-to-date review of the recent research literature. The emphasis is on contemporary sediment system dynamics with relevance both to landscape management and landform development. Sediment Cascades: An Integrated Approach begins with an explanation of the need for an integrated approach to sediment delivery systems and introduces the main themes of sediment production, delivery, storage and transfer. Further chapters then focus on specific environments from mountains, through floodplains, to estuaries and the continental shelf. Focuses on contemporary sediment system dynamics and current research Covers a sequence of environments from steep mountains to the continental shelf Highlights the continuity of the subject by linking each component area with its adjacent elements
Download or read book Methods for the Quantitative Assessment of Channel Processes in Torrents Steep Streams written by Dieter Rickenmann and published by CRC Press. This book was released on 2016-03-30 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: An important part of the risk management of natural hazards in mountain regions concerns the hazard assessment and the planning of protection measures in steep headwater catchments, i.e. torrent control and slope stabilization. Torrent processes in steep channels have their rightful place among the various alpine natural hazards and the correspondi
Download or read book Mountain Rivers written by Ellen E. Wohl and published by American Geophysical Union. This book was released on 2000 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sediment Transport in Streams in the Umpqua River Basin Oregon written by C. A. Onions and published by . This book was released on 1969 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gravel Bed Rivers written by Michael Church and published by John Wiley & Sons. This book was released on 2012-02-10 with total page 605 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Methods in Stream Ecology written by F. Richard Hauer and published by Academic Press. This book was released on 2017-01-16 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: Methods in Stream Ecology provides a complete series of field and laboratory protocols in stream ecology that are ideal for teaching or conducting research. This two part new edition is updated to reflect recent advances in the technology associated with ecological assessment of streams, including remote sensing. Volume focusses on ecosystem structure with in-depth sections on Physical Processes, Material Storage and Transport and Stream Biota. With a student-friendly price, this Third Edition is key for all students and researchers in stream and freshwater ecology, freshwater biology, marine ecology, and river ecology. This text is also supportive as a supplementary text for courses in watershed ecology/science, hydrology, fluvial geomorphology, and landscape ecology. Methods in Stream Ecology, 3rd Edition, Volume 2: Ecosystem Structure, is also available now! Provides a variety of exercises in each chapter Includes detailed instructions, illustrations, formulae, and data sheets for in-field research for students Presents taxonomic keys to common stream invertebrates and algae Includes website with tables and a link from Chapter 22: FISH COMMUNITY COMPOSITION to an interactive program for assessing and modeling fish numbers Written by leading experts in stream ecology
Download or read book IAHS Publication written by and published by . This book was released on 1981 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Going with the Flow written by Barbara Ellis-Sugai and published by . This book was released on 2002 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Vegetation and Land Use on the Channel Morphology of Wickiup Creek Blue Mountains Oregon written by Catherine Faye Clifton and published by . This book was released on 1987 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
