Distinguished Lecture, Department of Engineering Systems and Environment
Natural disasters in 2011 alone resulted in $366 billion (2011 US$) in direct damages and 29,782 fatalities worldwide. Storms and floods accounted for up to 70% of the 302 natural disasters worldwide, with earthquakes producing the greatest number of fatalities. Managing these risks and others rationally requires an appropriate definition of resilience and associated metrics. This presentation provides a resilience definition that meets a set of requirements with clear relationships to reliability and risk as key relevant metrics. Such metrics provide a sound basis for the development of effective decision- and policy-making methods for multihazard environments for various system types including lifeline, environmental, financial, etc. systems. The presentation also examines recovery, with its classifications based on level, spatial, and temporal considerations. Three case studies are used to gain insights to help define recovery profiles. The economics of resilience is briefly discussed.