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Introduction To The Physics Of Cohesive Sediment Dynamics In The Marine Environment

Author: Johan C. Winterwerp
Publisher: Elsevier
ISBN: 9780080473734
Size: 54.94 MB
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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.

Users Guide To Ecohydraulic Modelling And Experimentation

Author: L. E. Frostick
Publisher: CRC Press
ISBN: 1315778831
Size: 49.50 MB
Format: PDF
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Users Guide to Ecohydraulic Modelling and Experimentation has been compiled by the interdisciplinary team of expert ecologists, geomorphologists, sedimentologists, hydraulicists and engineers involved in HYDRALAB IV, the European Integrated Infrastructure Initiative on hydraulic experimentation which forms part of the European Community’s Seventh Framework Programme. It is designed to give an overview of our current knowledge of organism-environment interactions in marine and freshwater aquatic systems and to provide guidance to those wishing to use hydraulic experimental facilities to explore ecohydraulic processes. By highlighting the current state of our knowledge, this design manual will act as a guide to the use of living organisms in physical models and experiments and help scientists and engineers understand limitations on the use of surrogates. It incorporates chapters on the general decisions that need to be taken when designing an ecohydraulic experiment as well as specific chapters on the main aquatic and marine organisms likely to be of interest. Each of the chapters reviews current knowledge in a defined area of ecohydraulic experimental research. It excludes consideration of fish and mammals and does not deal with plankton, as it focuses on the sediment-water interface and the influences of biota in this complex area. Its primary purpose is to disseminate the extensive knowledge and experience of the team of ecohydraulic experimentalists involved in HYDRALAB IV as part of the PISCES research project as well as some of the important advances being made in this fast developing field of research.

Sediment Transport In Coastal Waters

Author: Sylvain Ouillon
Publisher: MDPI
ISBN: 3038978442
Size: 41.43 MB
Format: PDF, Kindle
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The interface of 440,000 km long coastline in the world is subject to global change, with an increasing human pressure (land use, buildings, sand mining, dredging) and increasing population. Improving our knowledge on involved mechanisms and sediment transport processes, monitoring the evolution of sedimentary stocks and anticipating changes in littoral and coastal zones is essential for this purpose. The special issue of Water on “Sediment transport in coastal waters” gathers thirteen papers which introduce the current revolution in the scientific research related to coastal and littoral hydrosedimentary dynamics, and reflect the diversity of concerns on which research in coastal sediment transport is based, and current trends — topics and preferred methods — to address them.

Sediment And Ecohydraulics

Author: Tetsuya Kusuda
Publisher: Elsevier
ISBN: 9780080556543
Size: 53.98 MB
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Sediments and Ecohyraulics is comprised of papers submitted to the 6th International Conference on Cohesive Sediments (INTERCOH 2005) held in Saga, Japan, September 2005. The papers are divided into two major categories. The first is basic processes, including erosion, settling, flocculation, and consolidation. The second major catagory is application of the understanding of cohesive sediments to address specific issues, including waterway and part management, fluid mud behavior, and contaminiated sediment management. *Provides an up-to-date resource of the present knowledge of cohesive sediment transport processes *Contains practical solutions on cohesive transport problems *Presents information on managing cohesive sediments

River Coastal And Estuarine Morphodynamics Rcem 2007 Two Volume Set

Author: C. Marjolein Dohmen-Janssen
Publisher: CRC Press
ISBN: 9780415453639
Size: 80.95 MB
Format: PDF, ePub, Mobi
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Around the world, many people live, work and recreate in river, estuarine and coastal areas, systems which are also important wildlife habitats. It is imperative to understand the physics of such systems. A key element here is morphodynamics: the mutual interaction and adjustment of landform topography and fluid dynamics involving the motion of sediment. The numerous interacting processes involved, such as large- and small-scale hydrodynamics, sediment transport dynamics, growth and decay of bed perturbations or larger bed forms, biological processes and human interferences make morphodynamics a challenging scientific issue. These proceedings bring together contributions from some 200 scientists from more than 20 countries and present and discuss the latest scientific research developments on this topic. In addition, five key-note papers are included that introduce the specific themes of the conference: - Relations between scales and long-term morphodynamics - Biogeomorphology - Small-scale processes and grain sorting - Morphodynamic free behaviour - Human interferences in morphodynamics The book provides an excellent overview of the state of the art knowledge on River, Coastal and Estuarine Morphodynamics and will be of interest to academics, engineers, planners, national and local authorities and all those involved in managing river, estuarine and coastal habitats.

Beaches

Author: J. Hardisty
Publisher: Springer Science & Business Media
ISBN: 9780044452195
Size: 50.17 MB
Format: PDF, Docs
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This book places research into worldwide beach environments in its geomorphological context. Having introduced the systems approach to environmental modelling, and identified the groups of processes operating on beaches, the text is structured in five parts: the first three sections provide a sequential account of the effects of these processes on the beach system; part four focuses on theory relevant to landform stability, then reviews existing empirical, analytical and numerical models; and the final section introduces a computer model and shows its application to the process functions developed earlier.