This book is devoted to original research work on all aspects of natural hazards, including the forecasting of catastrophic events, risk management, and the nature of precursors of natural and technological hazards.Although hazards can originate in different sources and systems, such as atmospheric, hydrologic, oceanographic, volcanologic, seismic, neotectonic, the environmental impacts are equally catastrophic. This warrants a close interaction between different scientific and operational disciplines, aimed at enhancing the mitigation of hazards.