This volume is the second in the new Safety and Security Engineering series that is designed to provide a comprehensive view on risk mitigation. This volume is devoted to landslides and debris flow, addressing the need for a better understanding of these increasingly frequent phenomena. With better understanding comes a greater ability to manage the attendant risk.The present volume contains selected research papers presented at Wessex Institute of Technology Conferences. The book will be a valuable reference for professionals, scientists, and managers concerned with prediction and management of the risk of landslides and debris flows.