Sediment Fluxes in Coastal Areas
Title | Sediment Fluxes in Coastal Areas PDF eBook |
Author | Mohamed Maanan |
Publisher | Springer |
Pages | 236 |
Release | 2014-10-28 |
Genre | Science |
ISBN | 9401792607 |
This book presents a detailed analysis and synthesis of the processes affecting sediments fluxes from watershed to worldwide coastal systems. The volume provides a comprehensive overview and constitutes a systematic description of the response of coastal systems to global and local changes, like climate change, sea level, land use and land cover change. The case studies cover a sequence of coastal environments such as lagoons, bays, estuaries, deltas and beaches. Sediment Fluxes in Coastal Areas is designed for researchers, professionals and for course-use in hydrology, oceanography, geography, geology, geomorphology and environmental science.
Coastal Fluxes in the Anthropocene
Title | Coastal Fluxes in the Anthropocene PDF eBook |
Author | Christopher J. Crossland |
Publisher | Springer Science & Business Media |
Pages | 244 |
Release | 2005-10-24 |
Genre | Science |
ISBN | 3540278516 |
This book synthesizes knowledge of coastal and riverine material fluxes, biogeochemical processes and indications of change, both natural, and increasingly human-initiated. Here, the authors assess coastal flux in the past and present, and in future under the International Geosphere-Biosphere Programme (IGBP), the International Human Dimensions Programme on Global Environmental Change (IHDP) and the LOICZ II (Land-Ocean Interactions in the Coastal Zone) Project.
Modeling and Practice of Erosion and Sediment Transport under Change
Title | Modeling and Practice of Erosion and Sediment Transport under Change PDF eBook |
Author | Mohamed Meddi |
Publisher | MDPI |
Pages | 212 |
Release | 2019-09-17 |
Genre | Technology & Engineering |
ISBN | 3039214314 |
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.
Experimental Study of Sediment Fluxes on Barcelona's Nearshore
Title | Experimental Study of Sediment Fluxes on Barcelona's Nearshore PDF eBook |
Author | Carla Armengou Gallardo |
Publisher | |
Pages | |
Release | 2011 |
Genre | |
ISBN |
The presence of suspended sediment in marine waters has several impacts, such as a degradation of the coastal ecosystem, pollution or a damaging effect on the tourism-oriented economies. FIELD_AC is a European project that aims to provide an improved operational service for coastal areas and generate added value for GMES predictions. This is achieved by the analysis of field cases. In this context, this minor thesis is based on the study of the information obtained in a field campaign carried out on Barcelona's near shore between November of 2010 and January of 2011. The data studied in this minor thesis was acquired in two different deployments: A1 and A2, located at 24 m depth in front of the combined sewer overflow of Bogallet and in front of the Besós river mouth respectively. These deployments consisted of a concrete structure provided with an AWAC current profiler, able to measure current velocities and wave parameters, and two different SSC sensors: a turbidimeter and an optical backscatter. In the first place, a quality control of the measurements provided by the instruments is done in order to verify its validity in relation to each instrument measuring range and in relation to the expected behaviour for each parameter. The only instruments that show problems with the validity of the measurements are the turbidimeters and the optical devices. Data acquired until the 8th of December shows optimal reliability. From that date until the 5th of January, turbidity data suffers a decrease of reliability and from the 5th of January onward, turbidity measurements are not valid, as the behaviours observed cannot be explained by natural processes. In the second place, the validated data is studied. Including meteorological conditions (wind, atmospheric pressure and rainfall), sea level, wave climate (significant wave height, maximum wave height, period and direction), currents and continental inputs (combined sewer overflow spills and river discharges). These parameters are the driving forces that control sediment transport processes. In the third place, sediment fluxes, current shear stress, wave shear stress and critical conditions for resuspension are calculated and significant SSC increase events are identified. Finally, each turbidity increase event is studied thoroughly in order to establish the agents responsible for the presence of sediment in the water column. Three agents are observed to have the capability of incorporating sediment to the water column in Barcelona's near shore: waves, currents and offshore fluxes of continental inputs.
Sediment Transport in Coastal Waters
Title | Sediment Transport in Coastal Waters PDF eBook |
Author | Sylvain Ouillon |
Publisher | MDPI |
Pages | 284 |
Release | 2019-04-11 |
Genre | Science |
ISBN | 3038978442 |
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.
Mitigating Shore Erosion Along Sheltered Coasts
Title | Mitigating Shore Erosion Along Sheltered Coasts PDF eBook |
Author | National Research Council |
Publisher | National Academies Press |
Pages | 189 |
Release | 2007-05-04 |
Genre | Science |
ISBN | 0309103460 |
Like ocean beaches, sheltered coastal areas experience land loss from erosion and sea level rise. In response, property owners often install hard structures such as bulkheads as a way to prevent further erosion, but these structures cause changes in the coastal environment that alter landscapes, reduce public access and recreational opportunities, diminish natural habitats, and harm species that depend on these habitats for shelter and food. Mitigating Shore Erosion Along Sheltered Coasts recommends coastal planning efforts and permitting policies to encourage landowners to use erosion control alternatives that help retain the natural features of coastal shorelines.
Land Ocean Interaction
Title | Land Ocean Interaction PDF eBook |
Author | D. Huntley |
Publisher | IWA Publishing |
Pages | 299 |
Release | 2000-12-01 |
Genre | Science |
ISBN | 1900222108 |
The UK Land-Ocean Interaction Study (LOIS) provided a major opportunity to measure and model the processes controlling the fluxes of materials between river basins and coastal seas. The main programme of research took place between 1992 and 1998, funded by the UK Natural Environment Research Council, and involved approximately 360 coastal researchers contributing to more than 70 collaborative projects. This book presents accessible summaries of key results of this research. The ten chapters of the book are written by leading contributors to the programme, and cover aspects of the physical, sedimentological, chemical and biological processes controlling fluxes between river catchments and coastal seas in temporate environments. Major overarching themes for all of the chapters include the persistence, storage, degradation and transport of pollutants from catchment to coastal sea, and an emphasis on the relevance of research for river and coastal water quality management. The chapters also describe a number of important technological advances in the measurement of processes and longer term monitoring of the fluvial, estuarine and coastal environments. Approaches to monitoring were also transferred between disciplines, in many cases for the first time. The rivers and coastal programme of LOIS was unique in its scale and inter-disciplinarity and its results are of lasting value. This book provides a useful and important summary of many of its results and an effective introduction to the research for those who want to delve more deeply into the data and published papers. It will be of interest to scientists, environmental managers and scientific policy makers. Contents Background and Context of the Programme River and Estuary Management Issues in the Humber Catchment Suspended Sediment Fluxes from River Basins River Chemistry Modelling of Large-Scale River Basins Tidal Reaches Estuarine Sediments The Intertidal Zone The Holderness Coast Estuarine Chemistry