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Introduction to the physics of cohesive sediment in the marine environment
A comprehensive study of cohesive sediment requires a multi-disciplinary
approach. The behaviour of cohesive sediment is determined by physical,
biological and chemical aspects. Furthermore, there is a wide range of societal
issues related to cohesive sediments, such as siltation in navigational channels,
water quality problems, sustainable management of estuaries and wetlands,
stability of continental slopes, etc.
In the last decade, substantial progress has been made in understanding the
processes governing cohesive sediment behaviour. These developments have
been reported in an overwhelming number of papers and congress proceedings,
which are published in a wide variety of journals and books. However, there is
no journal exclusively dedicated to cohesive sediment, nor is there a specialised
book which summarises the recent work. The best introduction to the physical
aspects of cohesive sediment is still found in the proceedings of the 1984-
workshop on cohesive sediment edited by A.J. Mehta (1986). For engineering
applications a handy introduction is provided by Whitehouse et al. (2000).
In the present book, we have therefore undertaken the task of summarising the
recent progress made in understanding the physical processes of cohesive
sediment in the marine environment. The book contains overviews of classical
and recent literature and of new developments, which have not yet been
published. We treat the physical processes in the water column, in the bed and
at the water-bed interface. This is done from both a hydrodynamic and from a
soil mechanical point of view, and we try to integrate these approaches where
relevant. Moreover, we give some attention to biological and chemical effects,
as they may (largely) affect the behaviour of cohesive sediment in the natural
environment.
This book is written for all graduate students, scientists and engineers who
want to study the physical behaviour of cohesive sediment in depth and at a
fundamental level. As such the book does not contain, but a few, recipes for
direct engineering applications. However, we do give examples and some
numerical elaboration of the concepts and formulations derived in this book.
Yet we feel that this book can contribute to sound managerial and engineering
decisions through a better understanding of the underlying physics.
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