Estuarine Cohesive Sediment Dynamics

Author : Ashish J. Mehta
Publisher : Springer Science & Business Media
Page : 480 pages
File Size : 50,7 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 : Ashish J Mehta
Publisher : Unknown
Page : 486 pages
File Size : 47,6 Mb
Release : 1986-04-11
Category : Electronic
ISBN : 1461249376

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Estuarine Cohesive Sediment Dynamics by Ashish J Mehta Pdf

Author : Richard Whitehouse
Publisher : Thomas Telford
Page : 240 pages
File Size : 48,5 Mb
Release : 2000-11-03
Category : Nature
ISBN : 0727728644

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Dynamics of Estuarine Muds by Richard Whitehouse Pdf

The ability to predict the movement of cohesive sediment within coastal, estuarine or inland waters has a significant economic and ecological importance in the development of new engineering works and the maintenance of existing installations. Dynamics of estuarine muds clearly describes the most up-to-date developments in this field and contains information about improved procedures and how they can be applied to a variety of engineering projects. Drawing on a wide range of new data and new concepts in mud research, this concise volume presents the main processes of cohesive sediment behaviour, namely, erosion, transport, deposition and consolidation. It includes subsections on Knowledge, intended to show the practising engineer which parameters are important in each of the processes and Procedure, which will enable broad estimates of erosion, transport, deposition and consolidation to be made based on knowledge of the site conditions. Dynamics of estuarine muds is essential reading for the practising engineer who is involved in coastal, estuarine or inland water construction. A companion volume to Dynamics of marine sands, this excellent book provides invaluable information about this complex topic in a readily accessible manner.

Author : Ashish J. Mehta
Publisher : Unknown
Page : 473 pages
File Size : 55,9 Mb
Release : 1986
Category : Estuarine sediments
ISBN : 3540962964

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Estuarine Cohesive Sediment Dynamics by Ashish J. Mehta Pdf

Author : Johan C. Winterwerp,C. Kranenburg
Publisher : Elsevier
Page : 731 pages
File Size : 45,5 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 : Jerome Maa,Lawrence P. Sanford,David Schoellhamer
Publisher : Elsevier
Page : 536 pages
File Size : 40,5 Mb
Release : 2011-09-22
Category : Science
ISBN : 9780080464695

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Estuarine and Coastal Fine Sediment Dynamics by Jerome Maa,Lawrence P. Sanford,David Schoellhamer Pdf

This volume is the product of the International Conference on Cohesive Sediment Transport (INTERCOH 2003) held at the Virginia Institute of Marine Science, U.S.A., during October 1-4, 2003. The topics included in this monograph range from basic research on cohesive sediment dynamics to practical applications. Also included with this book is a database that contains all experimental results as well as a comparison of numerical simulation results supported by the COSINUS project. * Provides fundamental knowledge of the dynamics of cohesive sediments * Presents practical applications of new finds on sedimentary processes * Includes valuable ready-for-use data

Author : Jerome P.-Y. Maa,Lawrence Paul Sanford,David H. Schoellhamer
Publisher : Elsevier Science Publishing Company
Page : 525 pages
File Size : 43,5 Mb
Release : 2007
Category : Coastal sediments
ISBN : 0444522387

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Estuarine and Coastal Fine Sediments Dynamics by Jerome P.-Y. Maa,Lawrence Paul Sanford,David H. Schoellhamer Pdf

A product of the International Conference on Cohesive Sediment Transport (INTERCOH 2003) held at the Virginia Institute of Marine Science, USA. The topics included in this volume range from basic research on cohesive sediment dynamics to practical applications. Also included is a database of experimental results.

Author : Ashish J. Mehta
Publisher : American Geophysical Union
Page : 600 pages
File Size : 41,9 Mb
Release : 1993-01-11
Category : Science
ISBN : UOM:39015032952544

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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 : Keith R. Dyer
Publisher : Unknown
Page : 368 pages
File Size : 54,7 Mb
Release : 1986-05-06
Category : Science
ISBN : UCSD:31822002229896

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Coastal and Estuarine Sediment Dynamics by Keith R. Dyer Pdf

Covers the movement of mud, sand, and gravel on the continental shelf in the nearshore zone, on beaches, and in estuaries. A multi-disciplinary treatment integrating marine geology, oceanography, and engineering. Presents concepts in engineering sediment distribution patterns that improve the prediction of erosion and deposition rates. Reviews background material as well as the results of recent research.

Author : Neville Burt,R. Parker,Jacqueline Watts
Publisher : John Wiley & Sons
Page : 490 pages
File Size : 54,6 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 : William H. McAnally,Ashish J. Mehta
Publisher : Gulf Professional Publishing
Page : 546 pages
File Size : 41,9 Mb
Release : 2001
Category : Medical
ISBN : 044450463X

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Coastal and Estuarine Fine Sediment Processes by William H. McAnally,Ashish J. Mehta Pdf

Hardbound. The INTERCOH series of conferences bring together the world's leading researchers and practitioners in cohesive sediment transport processes to share recent insights. This book presents papers that examine the spectrum of fine sediment transport related science and engineering, including the basics and applications of flocculation, settling, deposition, and erosion, advanced numerical models used in engineering practice, and applications to mud flats and harbor siltation.

Author : Job Dronkers,Wim van Leussen
Publisher : Springer Science & Business Media
Page : 556 pages
File Size : 41,7 Mb
Release : 2012-12-06
Category : Science
ISBN : 9783642736919

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Physical Processes in Estuaries by Job Dronkers,Wim van Leussen Pdf

In Physical Processes in Estuaries the present day knowledge of the physics of transport phenomena in estuaries and their mathematical treatment is summarized: It is divided into following parts: - Water movements in estuaries - Estuarine fronts and river plumes - Internal waves and interface stability - Fine sediment transport, aggregation of particles, settling velocity of mud flocs - Sedimentation and erosion of fine sediments. For each topic an up-to-date review and recommendations for future research are given, followed by results of original studies. Since estuarine environments are the first to be threatened by urbanization and industrial exploitation this book is an important tool for students and researchers of environmental problems as well as for consultants and water authorities.

Author : Fernanda Achete
Publisher : CRC Press
Page : 157 pages
File Size : 44,9 Mb
Release : 2020-04-22
Category : Science
ISBN : 9780429611506

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Multiple Scales of Suspended Sediment Dynamics in a Complex Geometry Estuary by Fernanda Achete Pdf

Many estuaries are located in urbanized, highly engineered environments. Cohesive sediment plays an important role due to its link with estuarine health and ecology. An important ecological parameter is the suspended sediment concentration (SSC) translated into turbidity levels and sediment budget. This study contributes to investigate and forecast turbidity levels and sediment budget variability at San Francisco Bay-Delta system at a variety of spatial and temporal scales applying a flexible mesh process-based model (Delft3D FM). It is possible to have a robust sediment model, which reproduces 90% of the yearly data derived sediment budget, with simple model settings, like applying one mud fraction and a simple bottom sediment distribution. This finding opens the horizon for modeling less monitored estuaries. Comparing two case studies, i.e. the Sacramento-San Joaquin Delta and Alviso Slough, a classification for estuaries regarding the main sediment dynamic forcing is proposed: event-driven estuary (Delta) and tide-driven estuary (Alviso Slough). In the event-driven estuaries, the rivers are the main sediment source and the tides have minor impact in the net sediment transport. In the tide-driven estuaries, the main sediment source is the bottom sediment and the tide asymmetry defines the net sediment transport. This research also makes advances in connecting different scientific fields and developing a managerial tool to support decision making. It provides the basis to a chain of models, which goes from the hydrodynamics, to suspended sediment, to phytoplankton, to fish, clams and marshes.

Author : Johan C. Winterwerp,Walther G.M. van Kesteren
Publisher : Elsevier
Page : 577 pages
File Size : 51,8 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 : Fernanda Minikowski Achete
Publisher : Unknown
Page : 128 pages
File Size : 47,9 Mb
Release : 2016
Category : Estuarine sediments
ISBN : 0138746273

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Multiple Scales of Suspended Sediment Dynamics in a Complex Geometry Estuary by Fernanda Minikowski Achete Pdf

Many estuaries are located in urbanized, highly engineered environments. Cohesive sediment plays an important role due to its link with estuarine health and ecology. An important ecological parameter is the suspended sediment concentration (SSC) translated into turbidity levels and sediment budget. This study contributes to investigate and forecast turbidity levels and sediment budget variability at San Francisco Bay-Delta system at a variety of spatial and temporal scales applying a flexible mesh process-based model (Delft3D FM). It is possible to have a robust sediment model, which reproduces 90% of the yearly data derived sediment budget, with simple model settings, like applying one mud fraction and a simple bottom sediment distribution. This finding opens the horizon for modeling less monitored estuaries.Comparing two case studies, i.e. the Sacramento-San Joaquin Delta and Alviso Slough, a classification for estuaries regarding the main sediment dynamic forcing is proposed: event-driven estuary (Delta) and tide-driven estuary (Alviso Slough). In the event-driven estuaries, the rivers are the main sediment source and the tides have minor impact in the net sediment transport. In the tide-driven estuaries, the main sediment source is the bottom sediment and the tide asymmetry defines the net sediment transport. This research also makes advances in connecting different scientific fields and developing a managerial tool to support decision making. It provides the basis to a chain of models, which goes from the hydrodynamics, to suspended sediment, to phytoplankton, to fish, clams and marshes.