Debris Flow Modelling; Monitoring and Measurement; Risk Assessment; Sediment Transport and Debris Flow; Protective Barriers; Landslide Phenomena. The book will be useful to engineers, scientists and managers from laboratories, industry, government and academia who deal with risk management, natural disasters, and the phenomena themselves.

The book contains papers presented at the fourth in a series of biennial International Conferences dealing with the Monitoring, Simulation, Prevention and Remediation of Dense and Debris Flow. The papers deal with erosion and slope instability, sediment transport, debris flow and debris flood data acquisition, debris flow phenomenology and laboratory tests, using the most advanced, state-of-the-art methodologies in monitoring, modelling, mechanics, hazard prediction and risk assessment of debris flow phenomena.

This book contains papers presented at Second International Conference on Debris Flow including all aspects of Debris Flow Monitoring, Modelling, Hazard Assessment, Mitigation Measures, Case Studies and Extreme Events, Erosion, Slope Instability and Sediment Transport, held in the New Forest, UK in 2008 and organised by the Wessex Institute of Technology, with the co-sponsorship of EurAgEng (European Society of Agricultural Engineers) and CIGR (International Commission of Agricultural Engineering). Due to the increased frequency with which debris and hyper-concentrated flows occur and the impact they have on both the environment and human life, in recent years these extreme events and related processes have attracted increasing attention from research groups, land planning and management professionals The objective of the Meeting was to provide a forum for engineers, scientists and managers from laboratories, industry, government and academia to interchange knowledge and expertise in the field of dense and hyper-concentrated flows. A full understanding of these phenomena leads to a new integrated risk management approach which provides measures for preventing a hazard turning into a natural disaster.

Debris and hyper-concentrated flows are among the most destructive of all water related disasters. They affect both rural and urban areas in a wide range of morphoclimatic environments, and in recent years have attracted more and more attention from the scientific and professional communities and concern from the public due to the death toll they claim. The increased frequency of these natural hazards, coupled with climatic change predictions and urban development, suggests that they are set to worsen in the future. This book contains the edited versions of the papers presented at the third International conference on Monitoring, Simulation, Prevention and Remediation of Dense and Debris Flows. The Conference brought together engineers, scientists and managers from across the globe to discuss the latest scientific advancs in the field of dense and hyper-concentrated flows, as well as to improve models, assess risk, develop hazard maps based on model results and to design prevention and mitigation measures. The papers have been organised into the following sections: Debris Flow Modelling; Debris Flow Triggering; Risk Assessment and Hazard Mitigation; Sediment Transport and Debris Flow Monitoring & Analysis.

Human settlements have grown near watercourses since ancient times. Water supply, irrigation, navigation, wastewater conveyance and city defense are some of the uses that were responsible for this choice. Even floods played an important role, favoring the soil fertilization. Man-made actions, however, especially in urban watersheds, significantly modify the natural water cycle, increasing the magnitude of floods and their potential damages. Consequently, flood damages are one of the most important issues to be dealt with in the present days. Several different studies show that floods are one of the most important natural hazards, with several losses, both in terms of lives and money. Particularly in urban areas, the amplification of floods may cause important economic losses and lead to critical social risks to the cities and their population, when inundation reaches the built environment. This situation is becoming more frequent each day. Recent history shows that urbanization is an inevitable trend and, today, the most part of the world population lives in cities. It is difficult, however, to adequately manage urban flood problems, because flood risk and flood costs are not easy to quantify. Traditionally, flood risk and flood cost assessments face difficulties due to the subjective nature of these evaluations and to the inexistence of standardized methodologies.This book tries to show different techniques and approaches to help in treating flood problems. Chapters 1 and 2 show simplified mathematical modeling of floods and results of multifunctional landscape flood control measures in the city of Rio de Janeiro. The remaining book chapters present remedial works against debris after floods in Venezuela and Measures for Mitigation of Flood areas in Japan. There are also presented studies related with Flood Risk Assessment and Management in Mediterranean Basins. The final chapter shows an interesting study related to the attitudes of residents in the Tokyo Bay area toward flood hazards.

Debris flows are among the most frequent and destructive of all geomorphic processes, mainly affecting mountainous areas in a range of morphoclimatic environments, and the damage they cause is often devastating. Increased anthropisation calls for improvements in the criteria used to identify debris-flow risk areas and the prevention measures adopted. One of the main difficulties encountered by the approaches illustrated in previous literature is linked to their possible validation either in the field or in a laboratory environment. The choice of a rheological model is extremely important. This book provides methodological details, which can be applied to investigations on debris-flow mechanics, capable of providing an accurate representation of the phenomenology.

This book presents a comprehensive, up-to-date review of technologies for cleaning up contaminants in groundwater and soil. It provides a special focus on three classes of contaminants that have proven very difficult to treat once released to the subsurface: metals, radionuclides, and dense nonaqueous-phase liquids such as chlorinated solvents. Groundwater and Soil Cleanup was commissioned by the Department of Energy (DOE) as part of its program to clean up contamination in the nuclear weapons production complex. In addition to a review of remediation technologies, the book describes new trends in regulation of contaminated sites and assesses DOE's program for developing new subsurface cleanup technologies.