Johnston, D.M.; Driedger, C.; Houghton, B.F.; Ronan, K.; Paton, D. 2001 Children's risk perceptions and preparedness : a hazard education assessment in four communities around Mount Rainier, USA : preliminary results . Lower Hutt: Institute of Geological & Nuclear Sciences. Institute of Geological & Nuclear Sciences science report 2001/02 29 p.
Abstract: Mount Rainier is an active volcano in Washington, USA, that poses a volcanic risk to an evergrowing population in the valleys around its base. Lahars (mudflows) travelling down these valleys are the greatest hazard. The threat of lahars occurring with little of no warning has prompted the US Geological Survey and local governments to install and maintain a lahar detection and warning system. Accoustic flow monitors (AFMs) have been installed in two river valleys (Puyallup and Carbon) to monitor lahar passage. The AFM system automatically confirms the presence of a lahar and issues warnings in the valleys. The time interval between detection and warning could be as little as 30 minutes. Local emergency management officials are designing education, evacuation and preparedness plans that will enable inhabitants to exit the valleys to safe locations as quickly as possible. (auth)