Erosion, Transport and Deposition Processes


Book Description

A Symposium dedicated to Heinrich Rohdenburg was held in August and September 1989 at Königslutter, FRG. The papers contained in this volume are a selection of those presented at the symposium. Reflecting the wide range of geomorphological, hydrological, pedological, and geoecological research fields of Heiner Rohdenburg the papers of this Catena Supplement vary from general diagnoses and considerations concerning the evolution of landscapes, process studies in the laboratory and in the field to process-orientated models. Honouring the extraordinary, ecosystem-oriented work of Heiner Rohdenburg, the papers present the state of the art, indicating many directions for future research.




Physical Processes in Estuaries


Book Description

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.










Modeling and Practice of Erosion and Sediment Transport under Change


Book Description

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.







Cohesive Sediments in Open Channels


Book Description

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




Processes, Assessment and Remediation of Contaminated Sediments


Book Description

The purpose of this book is to help engineers and scientists better understand contaminated sediment sites and identify and design remedial approaches that are more efficient and effective. Contaminated sediment management is a difficult and costly exercise that is rarely addressed with easily identified and implemented remedies. It is hoped that this book can help identify and implement management approaches that provide an optimal, if not entirely satisfactory, solution to sediment contaminant problems.​