Cohesive Sediments

Author : Emmanuel Partheniades
Publisher : Butterworth-Heinemann
Page : 375 pages
File Size : 50,9 Mb
Release : 2009-04-23
Category : Science
ISBN : 9780080877976

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Cohesive Sediments in Open Channels by Emmanuel Partheniades Pdf

Control the impact of cohesive sediments on open channels by managing the effects of silt, clay and other sediments in harbors, estuaries and reservoirs. Cohesive Sediments in Open Channels provides you with a practical framework for understanding how cohesive sediments are transported, deposited and eroded. One of the first books to approach the subject from an engineering’s perspective, this book supplies insight into applying hydraulic design as well as understanding the behavior of cohesive sediments in a flow field. Properties and of the nature and the origin of the interparticle physicochemical forces The forces between clay particles and the process of flocculation Processes and dynamics of flocculation and the hydrodynamic behavior of cohesive sediments Transport processes of sediments by flowing water and related equations are first presented and explained Deposition and resuspension of beds deposited from suspension from flowing waters Engineering applications of the hydraulics of cohesive sediments

Author : Neville Burt,R. Parker,Jacqueline Watts
Publisher : John Wiley & Sons
Page : 490 pages
File Size : 40,5 Mb
Release : 1997-04-03
Category : Science
ISBN : UCSD:31822025898099

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Cohesive Sediments by Neville Burt,R. Parker,Jacqueline Watts Pdf

There is an alarming tendency today to assume that something calculated by a computer must be correct, yet the phrase 'garbage in, garbage out' (gigo) is possibly nowhere more (generally) appropriate than in computer modelling of cohesive sediment behaviour. The behaviour of 'mud' is highly complex and one only needs to look at a sample under a microscope to see why - the variety of particle shapes, not to mention the presence of living organisms, make it a substance with properties virtually unique to its situation which even change with time. For many years most researchers tended to avoid it, preferring to study sand and gravel, but a dedicated few tackled it and found a forum for discussing their work in the first Cohesive Sediments Workshop in Florida in 1980. The workshop met about every three years resulting in publication of some of the most definitive papers on the subject. By 1994 it was time to recognise the extensive research being carried on in Europe by holding the workshop in that region. Intercoh '94 (the 4th Nearshore and Estuarine Cohesive Sediment Transport Conference) drew together about 100 of the world's leading researchers in the field. The resulting papers, presented in this volume, truly represent the definitive state of the art on the measurement and modelling of mud properties today.

Author : Anonim
Publisher : Government Printing Office
Page : 626 pages
File Size : 46,9 Mb
Release : 2006
Category : Science
ISBN : UOM:39015068765992

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Erosion and Sedimentation Manual by Anonim Pdf

NOTE: NO FURTHER DISCOUNT FOR THIS PRINT PRODUCT--OVERSTOCK SALE --Significantly reduced list price while supplies last The Erosion and Sedimentation Manual provides a comprehensive coverage of subjects in nine chapters (i.e., introduction, erosion and reservoir sedimentation, noncohesive sediment transport, cohesive sediment transport, sediment modeling for rivers and reservoirs, sustainable development and use of reservoirs, river process and restoration, dam decommissioning and sediment management, and reservoir surveys and data analysis). Each chapter is self-contained, with cross references of subjects that are discussed in different chapters of this manual. The manual also includes a list of commonly used notations used in the erosion and sedimentation literature, conversion factors between the Imperial and metric units, physical properties of water, and author and subject indexes for easy reference. Each chapter has a list of reference for readers who would like to seek out more detailed information on specific subjects. Audience The manual would be useful for researchers, university professors, graduate students, geologists, hydrographic survey analysts, municipal and state water research specialists, and engineers in solving erosion and sedimentation problems. Related products: Earth Science resources collection can be found here: https: //bookstore.gpo.gov/catalog/science-technology/earth-science

Author : M. Stone,IAHS International Commission on Continental Erosion
Publisher : Unknown
Page : 324 pages
File Size : 43,6 Mb
Release : 2024-07-02
Category : Electronic
ISBN : 1901502260

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The role of erosion and sediment transport in nutrient and contaminant transfer by M. Stone,IAHS International Commission on Continental Erosion Pdf

Author : Johan C. Winterwerp,Walther G.M. van Kesteren
Publisher : Elsevier
Page : 577 pages
File Size : 51,7 Mb
Release : 2004-08-20
Category : Science
ISBN : 9780080473734

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Introduction to the Physics of Cohesive Sediment Dynamics in the Marine Environment by Johan C. Winterwerp,Walther G.M. van Kesteren Pdf

This book is an introduction to the physical processes of cohesive sediment in the marine environment. It focuses on highly dynamic systems, such as estuaries and coastal seas. Processes on the continental shelf are also discussed and attention is given to the effects of chemistry, biology and gas.The process descriptions are based on hydrodynamic and soil mechanic principles, which integrate at the soil-water interface. This approach is substantiated through a classification scheme of sediment occurrences in which distinction is made between cohesive and granular material. Emphasis is also placed on the important interactions between turbulent flow and cohesive sediment suspensions, and on the impact of flow-induced forces on the stability of the seabed. An overview of literature on cohesive sediment dynamics is presented and a number of new developments are highlighted, in particular in relation to floc formation, settling and sedimentation, consolidation, bed failure and liquefaction and erosion of the bed. Moreover, it presents a summary on methods and techniques to measure the various sediment properties necessary to quantify the various parameters in the physical-mathematical model descriptions. A number of examples and case studies have been included.

Author : Ashish J. Mehta
Publisher : Springer Science & Business Media
Page : 480 pages
File Size : 45,6 Mb
Release : 2013-03-07
Category : Science
ISBN : 9781461249368

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Estuarine Cohesive Sediment Dynamics by Ashish J. Mehta Pdf

The background for the Workshop on Cohesive Sediment Dynamics - . !!!!!. Special Reference to Physical Processes in Estuaries is briefly outlined in Chapter I. Here I wish to acknowledge those whose support I consider to be pivotal to this under taking. My deepest appreciation goes to Cynthia Vey, whose organizational skills and dedicated effort made the completion of this volume possible. Thanks are also due to Gail Terry for workshop organization, Jean Branson for word processing and Lillean Pieter for helping with drawings. Finally, I must express my sincere appreciation to Arthur Ezra 9f the National Science Foundation for providing support (through Grant No. CEE-8401185) for the workshop, and to Hsiang Wang for depart mental encouragement. With deepest regret, I must note the untimely death of Ranjan Ariathurai, 39, on June 5, 1985, before this volume could be published. He was a guiding force to many within the small group of researchers in cohesive sediment dynamics, and his professional brilliance and inspirational personal qualities constituted the true spirit . behind the workshop. I trust this volume will serve, albeit in a small way, as a fitting memory to this spirit, and to the remarkable professional contributions Ranjan made during his short career. Professor Ray B. Krone Professor Emmanuel Partheniades Department of Civil Engineering Department of Engineering Sciences University of California University of Florida Davis, California Gainesville, Florida TABLE OF CONTENTS CHAPTER PAGE I. INTRODUCTION Ashish J. Mehta •••••••••••••••••••••••••••••••••••••••••••••••••••• 1 II.

Author : Silke Wieprecht,Stefan Haun,Karolin Weber,Markus Noack,Kristina Terheiden
Publisher : CRC Press
Page : 282 pages
File Size : 55,8 Mb
Release : 2016-11-30
Category : Science
ISBN : 9781317225317

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River Sedimentation by Silke Wieprecht,Stefan Haun,Karolin Weber,Markus Noack,Kristina Terheiden Pdf

Sediment dynamics in fluvial systems is of great ecological, economic and human-health-related significance worldwide. Appropriate management strategies are therefore needed to limit maintenance costs as well as minimize potential hazards to the aquatic and adjacent environments. Human intervention, ranging from nutrient/pollutant release to physical modifications, has a large impact on sediment quantity and quality and thus on river morphology as well as on ecological functioning. Truly understanding sediment dynamics requires as a consequence a multidisciplinary approach.River Sedimentation contains the peer-reviewed scientific contributions presented at the 13th International Symposium on River Sedimentation (ISRS 2016, Stuttgart, Germany, 19-22 September 2016), and includes recent accomplishments in theoretical developments, numerical modelling, experimental laboratory work, field investigations and monitoring as well as management methodologies.

Author : W.A. Chiou,Richard H. Bennett,R.W. Faas,William R. Bryant,J. Kasprowicz,Matthew H. Hulbert,H. Li,T. Lomenick,N.R. O`Brien,S. Pamukcu,P. Smart,C.E. Weaver,T. Yamamoto
Publisher : Springer Science & Business Media
Page : 570 pages
File Size : 43,5 Mb
Release : 2012-12-06
Category : Science
ISBN : 9781461244288

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Microstructure of Fine-Grained Sediments by W.A. Chiou,Richard H. Bennett,R.W. Faas,William R. Bryant,J. Kasprowicz,Matthew H. Hulbert,H. Li,T. Lomenick,N.R. O`Brien,S. Pamukcu,P. Smart,C.E. Weaver,T. Yamamoto Pdf

Knowledge of basic clay microstructure is fundamental to an understanding of the physical, chemical, and mechanical properties of fine-grained sediments and rocks. This compilation of fifty-nine peer-reviewed papers examines clay microstructure in detail with comprehensive sections focusing on microstructure signatures, environmental processes, modeling, measurement techniques, and future research recommendations. Many of these topics are discussed in light of geological and engineering applications, such as hazardous waste disposal, construction techniques, and drilling programs. The field of clay microstructure is developing rapidly. The concepts, observations, and principles presented in this book will help stimulate new thought and be a "spring board" for exciting new research.

Author : Robert G. Dean,Robert A. Dalrymple
Publisher : Cambridge University Press
Page : 498 pages
File Size : 41,5 Mb
Release : 2004-03-25
Category : Nature
ISBN : 0521602750

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Coastal Processes with Engineering Applications by Robert G. Dean,Robert A. Dalrymple Pdf

Text on coastal engineering and oceanography covering theory and applications intended to mitigate shoreline erosion.

Author : Brian Kronvang,Jadran Faganeli,Nives Ogrinc
Publisher : Springer Science & Business Media
Page : 309 pages
File Size : 53,5 Mb
Release : 2007-04-05
Category : Science
ISBN : 9781402054785

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The Interactions Between Sediments and Water by Brian Kronvang,Jadran Faganeli,Nives Ogrinc Pdf

This book focuses on sediments as a pollutant in natural freshwater and marine habitats, and sediments as a vector for the transfer of chemicals such as nutrients and contaminants. The selected papers cover three main topics: assessment and/or restoration of disturbed watersheds; sediment-water linkages in terrestrial and aquatic environments; evaluation of sediment and ecological changes in marine and freshwater habitats.

Author : Ashish J. Mehta
Publisher : American Geophysical Union
Page : 598 pages
File Size : 53,9 Mb
Release : 1993-01-11
Category : Science
ISBN : UCSD:31822016275828

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Nearshore and Estuarine Cohesive Sediment Transport by Ashish J. Mehta Pdf

This book discusses cohesive sediments. It is based on presentations at the Nearshore and Estuarine Cohesive Sediment Transport Workshop held in 1991.

Author : W. R. Parker
Publisher : Springer Science & Business Media
Page : 240 pages
File Size : 49,6 Mb
Release : 2012-12-06
Category : Science
ISBN : 9781468447637

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Transfer Processes in Cohesive Sediment Systems by W. R. Parker Pdf

In the transfer of chemical species through the aquatic environment the association with fine sediment particles is often of crucial importance. The n~ture, permanence and kinetics of this association is, in many cases, unknown yet it is central to any effort concerned with predicting the pathways of pollutant transfer and the fluxes along them. It is often unclear to precisely what surface, if any, a pollutant is attached. The transfer of species between surfaces and solution may be chemically or biochemically controlled. These processes may take place within a host framework which has a time and space dependent structure. The natural straining of this framework resulting from physical and chemical processes moves porewater and the dissolved species in it. Thus, to adequately predict the natural transfer of species within a cohesive sediment system the physical, biochemical and chemical processes must be dynamically coupled. This informal colloquium examined topics relevant to the associ ation of pollutant and sediment. These included the mineral particle surfaces and the surrounding ionic associations, methods of describing the particles and the physical, chemical, biochemical and biological processes operating in association with fine sediment substrates. The physical processes of sediment transport were deliberately excluded.

Author : Liqin Zuo
Publisher : CRC Press
Page : 188 pages
File Size : 47,7 Mb
Release : 2018-06-19
Category : Science
ISBN : 9780429794032

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Modelling and Analysis of Fine Sediment Transport in Wave-Current Bottom Boundary Layer by Liqin Zuo Pdf

The evolution and utilization of estuarine and coastal regions are greatly restricted by sediment problems. This thesis aims to better understand fine sediment transport under combined action of waves and currents, especially in the wave-current bottom boundary layer (BBL). Field observations, experimental data analysis, theoretical analysis and numerical models are employed. Silt-dominated sediments are sensitive to flow dynamics and the suspended sediment concentration (SSC) increase rapidly under strong flow dynamics. This research unveils several fundamental aspects of silty sediment, i.e., the criterion of the incipient motion, the SSC profiles and their phase-averaged parameterization in wave-dominated conditions. An expression for sediment incipient motion is proposed for silt-sand sediment under combined wave and current conditions. A process based intra-wave 1DV model for flow-sediment dynamics near the bed is developed in combined wave-current conditions. The high concentration layer (HCL) was simulated and sensitivity analysis was carried out by the 1DV model on factors that impact the SSC in the HCL. Finally, based on the 1DV model, the formulations of the mean SSC profile of silt-sand sediments in wave conditions were proposed. The developed approaches are expected to be applied in engineering practice and further simulation.

Author : Johan C. Winterwerp,C. Kranenburg
Publisher : Elsevier
Page : 731 pages
File Size : 53,5 Mb
Release : 2002-06-05
Category : Science
ISBN : 9780080531663

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Fine Sediment Dynamics in the Marine Environment by Johan C. Winterwerp,C. Kranenburg Pdf

Cohesive sediment, or mud, is encountered in most water bodies throughout the world. Often mud is a valuable resource, synonymous with fertile land, enriching the natural environment and used as an important building material. Yet mud also hinders navigation and consequently, dredging operations have been carried out since ancient times to safeguard navigation. Unfortunately, many mud deposits are now contaminated, endangering the eco-system and increasing the costs of dredging operations. The transport and fate of mud in the environment are still poorly understood and the need for basic research remains. This text contains the proceedings of the INTERCOH-2000 conference on progress in cohesive sediment research. It was the sixth in a series of conferences initially started by Professor Ashish Mehta in 1984 as a "Workshop on Cohesive Sediment Dynamics with Special Reference to the Processes in Estuaries". During these conferences the character of the first workshop has always been maintained, that is, small scale and dedicated to the physical and engineering aspects of cohesive sediments, without parallel sessions, but with ample time for discussions during and after the presentations, and followed by a book of proceedings containing thoroughly reviewed papers. INTERCOH-2000 was integrated with the final workshop of the COSINUS project. This project was carried out as a part of the European MAST-3 programme, and almost all European cohesive sediment workers were involved. INTERCOH-2000 focused on the behaviour and modelling of concentrated benthic suspensions, i.e. high-concentrated near-bed suspensions of cohesive sediment. Special attention was paid to: sediment - turbulence interaction; flocculation and settling velocity; high-concentrated mud suspensions; processes in the bed - consolidation; processes on the bed - erosion; field observations on mud dynamics; instrumentation; and numerical modelling.

Author : Ashish Jayant Mehta
Publisher : Unknown
Page : 54 pages
File Size : 40,5 Mb
Release : 1989
Category : Coastal engineering
ISBN : UCR:31210024818708

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Cohesive Sediments in Coastal Engineering Application by Ashish Jayant Mehta Pdf