Pyroclastic Flow 7 : Natural Disaster. Extremely hot gases, ash, and other materials of more than 1,000 degrees Celsius that rapidly ?ow down the ?ank of a volcano (more than 700 km/h) during an eruption
The International Disaster Database (EM-DAT), The EM-DAT Glossary, Centre for Research on the Epidemiology of Disasters (CRED), School of Public Health, Universit catholique de Louvain, Brussels, Belgium 2009. http://www.emdat.be/glossary/9, (ND/ Gen - Brit) {855}