Global Scale Bedload Flux Modeling

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Publisher :
ISBN 13 :
Total Pages : 67 pages
Book Rating : 4.:/5 (18 download)

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Book Synopsis Global Scale Bedload Flux Modeling by : Md Tazmul Islam

Download or read book Global Scale Bedload Flux Modeling written by Md Tazmul Islam and published by . This book was released on 2018 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bedload flux is an important component of the total fluvial sediment flux. Bedload dynamics can have a substantial effect on rivers and coastal morphology, infrastructure sustainability, aquatic ecology and water availability. Bedload measurements, especially for large rivers, are extremely scarce worldwide, where most global rivers have never been monitored. The paucity of bedload measurements is the result of 1) the nature of the problem (large spatial and temporal uncertainties), and 2) high costs due to the time-consuming nature of the measurement procedures (repeated bedform migration tracking, bedload samplers). Numerical models can help fill measurement gaps and provide a framework for predictions and hypothesis testing. Here, I present a first of its kind global bedload flux model using simplified Bagnold Equation, which considers only two dynamic (discharge and river slope) parameters along with few constant parameters (e.g., gravity, sediment density). Evaluation of model has been done based on observations for 59 river locations, mostly in the U.S. The model parameters, as well as other influential fluvial and basin parameters (e.g., discharge, drainage area, lithology), were evaluated against observed bedload to find their potential influence on bedload prediction. Considering the simplicity in the parameters needed to predict bedload flux through this model, and the capabilities to give first order estimation the model is helpful to give the large-scale overview of dynamic bedload flux universally. Also, the longitudinal dynamics between suspended and bedload sediment fluxes are mapped in three large rivers.

Sedimentary Crisis at the Global Scale 1

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Publisher : John Wiley & Sons
ISBN 13 : 1119579864
Total Pages : 252 pages
Book Rating : 4.1/5 (195 download)

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Book Synopsis Sedimentary Crisis at the Global Scale 1 by : Jean-Paul Bravard

Download or read book Sedimentary Crisis at the Global Scale 1 written by Jean-Paul Bravard and published by John Wiley & Sons. This book was released on 2019-03-04 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Earth’s oceans are currently undergoing unprecedented changes: rivers have suffered a severe reduction in their sediment transport, and as a result, sediment input to the oceans has dropped lower than ever before. These inputs have varied over millennia as a result of both natural occurrences and human actions, such as the building of dams and the extraction of materials from riverbeds. Sedimentary Crisis at the Global Scale 1 examines how river basins have been affected by the sedimentary crises of various historical epochs. By studying global balances, it provides insights into the profound disruption of the solid transport of fluvial bodies. The book also explores studies of various rivers, from the Amazon, which remains relatively unaffected, to dying rivers such as the Colorado and the Nile.

Gravel-Bed Rivers

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Publisher : John Wiley & Sons
ISBN 13 : 111897140X
Total Pages : 850 pages
Book Rating : 4.1/5 (189 download)

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Book Synopsis Gravel-Bed Rivers by : Daizo Tsutsumi

Download or read book Gravel-Bed Rivers written by Daizo Tsutsumi and published by John Wiley & Sons. This book was released on 2017-07-05 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Modeling and Practice of Erosion and Sediment Transport under Change

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Publisher : MDPI
ISBN 13 : 3039214314
Total Pages : 212 pages
Book Rating : 4.0/5 (392 download)

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Book Synopsis Modeling and Practice of Erosion and Sediment Transport under Change by : Mohamed Meddi

Download or read book Modeling and Practice of Erosion and Sediment Transport under Change written by Mohamed Meddi and published by MDPI. This book was released on 2019-09-17 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate and anthropogenic changes impact the conditions of erosion and sediment transport in rivers. Rainfall variability and, in many places, the increase of rainfall intensity have a direct impact on rainfall erosivity. Increasing changes in demography have led to the acceleration of land cover changes in natural areas, as well as in cultivated areas, and, sometimes, in degraded areas and desertified landscapes. These anthropogenized landscapes are more sensitive to erosion. On the other hand, the increase in the number of dams in watersheds traps a great portion of sediment fluxes, which do not reach the sea in the same amount, nor at the same quality, with consequences on coastal geomorphodynamics. This book is dedicated to studies on sediment fluxes from continental areas to coastal areas, as well as observation, modeling, and impact analysis at different scales from watershed slopes to the outputs of large river basins. This book is concentrated on a number of keywords: “erosion” and “sediment transport”, “model” and “practice”, and “change”. The keywords are briefly discussed with respect to the relevant literature. The contributions in this book address observations and models based on laboratory and field data, allowing researchers to make use of such resources in practice under changing conditions.

Sedimentary Crisis at the Global Scale 2

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Publisher : John Wiley & Sons
ISBN 13 : 1786303841
Total Pages : 230 pages
Book Rating : 4.7/5 (863 download)

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Book Synopsis Sedimentary Crisis at the Global Scale 2 by : Jean-Paul Bravard

Download or read book Sedimentary Crisis at the Global Scale 2 written by Jean-Paul Bravard and published by John Wiley & Sons. This book was released on 2019-05-21 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: The great deltas of the globe have been threatened for several decades but their decline now appears to be inevitable; they are receding and losing the fertility that supports their tens of millions of inhabitants. Our deltas are victims of the dramatic deterioration in the volume of continental sediment brought by rivers to the oceans. By nature, deltas are fragile eco- and geological organisms. For centuries, they have been subject to human actions in the Mediterranean and European world, and today a deep crisis is affecting the great tropical deltas. A chapter is also devoted to concerns facing the Mississippi, an “aging delta of the new world”. Sedimentary Crisis at the Global Scale 2 discusses possible strategies to protect the deltas of the world – or at least adapt them and their dependencies to the changes they face. Several models are possible, including comprehensive protection (such as in the Netherlands) and cautious and respectful opening to the forces of the oceans in an environment-first perspective.

Three-dimensional Numerical Simulation of Mobile-bed Hydrodynamics

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Publisher :
ISBN 13 :
Total Pages : 172 pages
Book Rating : 4.3/5 (121 download)

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Book Synopsis Three-dimensional Numerical Simulation of Mobile-bed Hydrodynamics by : Miodrag Spasojevic

Download or read book Three-dimensional Numerical Simulation of Mobile-bed Hydrodynamics written by Miodrag Spasojevic and published by . This book was released on 1993 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This report describes the theoretical principles of three-dimensional sediment transport and bed-evolution processes, and numerical solution of the appropriate governing equations. It also includes technical documentation and user's instructions for the sediment-operations program module developed as an integral part of the CH3D code."--P. ii.

Sediment Routing Systems

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Publisher : Cambridge University Press
ISBN 13 : 1107091993
Total Pages : 423 pages
Book Rating : 4.1/5 (7 download)

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Book Synopsis Sediment Routing Systems by : Philip A. Allen

Download or read book Sediment Routing Systems written by Philip A. Allen and published by Cambridge University Press. This book was released on 2017-09-14 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: This cutting-edge summary combines ideas from several sub-disciplines to provide an understanding of sediment routing systems and Earth surface dynamics.

Treatise on Geomorphology

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Publisher : Academic Press
ISBN 13 : 0080885225
Total Pages : 6392 pages
Book Rating : 4.0/5 (88 download)

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Book Synopsis Treatise on Geomorphology by :

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!

Sediment Transport and Morphodynamics Modelling for Coasts and Shallow Environments

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Publisher : CRC Press
ISBN 13 : 0429531591
Total Pages : 185 pages
Book Rating : 4.4/5 (295 download)

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Book Synopsis Sediment Transport and Morphodynamics Modelling for Coasts and Shallow Environments by : Vanesa Magar

Download or read book Sediment Transport and Morphodynamics Modelling for Coasts and Shallow Environments written by Vanesa Magar and published by CRC Press. This book was released on 2020-03-09 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference for engineers, and graduate students covers sediment transport and morphodynamics modelling in nearshore environments. It presents the fundamentals required for understanding the physics and for setting up numerical models. This book covers hydrodynamics of estuarine and coastal environments, properties of seafloor and estuarine composition, and hydroenvironmental interactions; emphasising the inter-relations of small- and large-scale processes, and short- and large-evolution timescales. The focus is, principally, on the application of shallow-water theory, but some surface wave models, and coupling of shallow-water models with surface waves is also discussed to some extent. The guidance on running regional models and the case studies presented are directed to managed realignment, coastal protection, climate change impacts, and offshore renewables. Key features: Gives a balanced review of this rich interdisciplinary area Bridges practical engineering and research Offers both large- and small-scale application Suits graduate students and researchers as well as consulting engineers Vanesa Magar is a senior researcher and associate professor at the Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE) in Baja California, Mexico. She was formerly a researcher and then a lecturer at Plymouth University, UK.

Estuaries and Coastal Zones in Times of Global Change

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Publisher : Springer Nature
ISBN 13 : 981152081X
Total Pages : 843 pages
Book Rating : 4.8/5 (115 download)

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Book Synopsis Estuaries and Coastal Zones in Times of Global Change by : Kim Dan Nguyen

Download or read book Estuaries and Coastal Zones in Times of Global Change written by Kim Dan Nguyen and published by Springer Nature. This book was released on 2020-02-28 with total page 843 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a collection of extended papers based on presentations given during the ICEC 2018 conference, held in Caen, France, in August 2018. It explores both the limitations and advantages of current models, and highlights the latest developments concerning new numerical schemes, high-performance computing, multi-physics and multi-scale methods, and better interaction with field or scale model data. Accordingly, it addresses the interests of practitioners, stakeholders, researchers, and engineers active in this field.

Principles of Soilscape and Landscape Evolution

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Publisher : Cambridge University Press
ISBN 13 : 0521858798
Total Pages : 337 pages
Book Rating : 4.5/5 (218 download)

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Book Synopsis Principles of Soilscape and Landscape Evolution by : Garry Willgoose

Download or read book Principles of Soilscape and Landscape Evolution written by Garry Willgoose and published by Cambridge University Press. This book was released on 2018-03 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a holistic guide to the construction of numerical models to explain the co-evolution of landforms, soils, vegetation and tectonics. This volume demonstrates how physical processes interact to influence landform evolution, and explains the science behind the physical processes, as well as the mechanics of how to solve them.

Sediment Flux to Basins

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Publisher : Geological Society of London
ISBN 13 : 9781862390959
Total Pages : 294 pages
Book Rating : 4.3/5 (99 download)

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Book Synopsis Sediment Flux to Basins by : Stuart J. Jones

Download or read book Sediment Flux to Basins written by Stuart J. Jones and published by Geological Society of London. This book was released on 2002 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Tools in Fluvial Geomorphology

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Publisher : John Wiley & Sons
ISBN 13 : 1118648560
Total Pages : 560 pages
Book Rating : 4.1/5 (186 download)

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Book Synopsis Tools in Fluvial Geomorphology by : G. Mathias Kondolf

Download or read book Tools in Fluvial Geomorphology written by G. Mathias Kondolf and published by John Wiley & Sons. This book was released on 2016-04-28 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluvial Geomorphology studies the biophysical processes acting in rivers, and the sediment patterns and landforms resulting from them. It is a discipline of synthesis, with roots in geology, geography, and river engineering, and with strong interactions with allied fields such as ecology, engineering and landscape architecture. This book comprehensively reviews tools used in fluvial geomorphology, at a level suitable to guide the selection of research methods for a given question. Presenting an integrated approach to the interdisciplinary nature of the subject, it provides guidance for researchers and professionals on the tools available to answer questions on river restoration and management. Thoroughly updated since the first edition in 2003 by experts in their subfields, the book presents state-of-the-art tools that have revolutionized fluvial geomorphology in recent decades, such as physical and numerical modelling, remote sensing and GIS, new field techniques, advances in dating, tracking and sourcing, statistical approaches as well as more traditional methods such as the systems framework, stratigraphic analysis, form and flow characterisation and historical analysis. This book: Covers five main types of geomorphological questions and their associated tools: historical framework; spatial framework; chemical, physical and biological methods; analysis of processes and forms; and future understanding framework. Provides guidance on advantages and limitations of different tools for different applications, data sources, equipment and supplies needed, and case studies illustrating their application in an integrated perspective. It is an essential resource for researchers and professional geomorphologists, hydrologists, geologists, engineers, planners, and ecologists concerned with river management, conservation and restoration. It is a useful supplementary textbook for upper level undergraduate and graduate courses in Geography, Geology, Environmental Science, Civil and Environmental Engineering, and interdisciplinary courses in river management and restoration.

River Dynamics

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Publisher : Cambridge University Press
ISBN 13 : 1108173780
Total Pages : 544 pages
Book Rating : 4.1/5 (81 download)

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Book Synopsis River Dynamics by : Bruce L. Rhoads

Download or read book River Dynamics written by Bruce L. Rhoads and published by Cambridge University Press. This book was released on 2020-04-29 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Fluvial Hydrodynamics

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Publisher : Springer
ISBN 13 : 3642190626
Total Pages : 706 pages
Book Rating : 4.6/5 (421 download)

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Book Synopsis Fluvial Hydrodynamics by : Subhasish Dey

Download or read book Fluvial Hydrodynamics written by Subhasish Dey and published by Springer. This book was released on 2014-08-22 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt: The state-of-the-art in fluvial hydrodynamics can be examined only through a careful exploration of the theoretical development and applied engineering technology. The book is primarily focused, since most up-to-date research findings in the field are presented, on the research aspects that involve a comprehensive knowledge of sediment dynamics in turbulent flows. It begins with the fundamentals of hydrodynamics and particle motion followed by turbulence characteristics related to sediment motion. Then, the sediment dynamics is analysed from a classical perspective by applying the mean bed shear approach and additionally incorporating a statistical description for the role of turbulence. The work finally examines the local scour problems at hydraulic structures and scale models. It is intended to design as a course textbook in graduate / research level and a guide for the field engineers as well, keeping up with modern technological developments. Therefore, as a simple prerequisite, the background of the readers should have a basic knowledge in hydraulics in undergraduate level and an understanding of fundamentals of calculus.

Sedimentology of Aqueous Systems

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Publisher : John Wiley & Sons
ISBN 13 : 9781444317121
Total Pages : 216 pages
Book Rating : 4.3/5 (171 download)

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Book Synopsis Sedimentology of Aqueous Systems by : Cristiano Poleto

Download or read book Sedimentology of Aqueous Systems written by Cristiano Poleto and published by John Wiley & Sons. This book was released on 2010-02-05 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sediments in aqueous systems are of increasing interest to academics, researchers, practitioners and stakeholders around the world. This book not only covers the characteristics of the sediments themselves, but also their physico-chemical impact on aquatic habitats and subsequent management implications. There is a strong focus on methods and instrumentation for collecting data and monitoring of environmental sediment quality and as a result, a wide range of environments are considered - from urban areas to freshwater estuaries and marine ecosystems. The chapters have been written by international specialists in the field, ensuring a good breadth of examples, experiences and case studies throughout. This book will appeal to a broad spectrum of interests from geographers, to engineers and environmental scientists, and at undergraduate to post graduate and academic researcher levels.

Analogue and Numerical Modelling of Sedimentary Systems

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Publisher : John Wiley & Sons
ISBN 13 : 1444303147
Total Pages : 328 pages
Book Rating : 4.4/5 (443 download)

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Book Synopsis Analogue and Numerical Modelling of Sedimentary Systems by : Poppe de Boer

Download or read book Analogue and Numerical Modelling of Sedimentary Systems written by Poppe de Boer and published by John Wiley & Sons. This book was released on 2009-01-26 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding basin-fill evolution and the origin of stratal architectures has traditionally been based on studies of outcrops, well and seismic data, studies of and inferences on qualitative geological processes, and to a lesser extent based on quantitative observations of modern and ancient sedimentary environments. Insight gained on the basis of these studies can increasingly be tested and extended through the application of numerical and analogue forward models. Present-day stratigraphic forward modelling follows two principle lines: 1) the deterministic process-based approach, ideally with resolution of the fundamental equations of fluid and sediment motion at all scales, and 2) the stochastic approach. The process-based approach leads to improved understanding of the dynamics (physics) of the system, increasing our predictive power of how systems evolve under various forcing conditions unless the system is highly non-linear and hence difficult or perhaps even impossible to predict. The stochastic approach is more direct, relatively simple, and useful for study of more complicated or less-well understood systems. Process-based models, more than stochastic ones, are directly limited by the diversity of temporal and spatial scales and the very incomplete knowledge of how processes operate and interact on the various scales. The papers included in this book demonstrate how cross-fertilization between traditional field studies and analogue and numerical forward modelling expands our understanding of Earth-surface systems.