Exceedance Probability 4 : Natural Disaster. The probability that a specified level of ground motion or social or economic impact in an area will be exceeded in a specified time
Natural and Environmental Disaster Information Exchange System NEDIES, European Commission, Directorate General Joint Research Centre (DG JRC), Institute for the Protection and Security of the Citizen (IPSC), Ispra (Varese) Italy, http://nedies.jrc.it/index.asp?ID=82#Top, University of Utah Seismograph Stations UUSS, Glossary of Terms, Utah, USA 2012. http://www.seis.utah.edu/qfacts/glossary.shtml, (ND/ Erthq - Amer) {166}