Natural Disaster Studies. Volume 4. The Eruption of Nevado del Ruiz Volcano,Colombia, South America, November 13, 1985

摘要

On November 13, 1985, catastrophic mudflows swept down the slopes of the eruptingNevado del Ruiz volcano in Colombia, South America, destroying structures in their paths. Chapters 1 through 3 of the present volume contain the study team's geological and geotechnical observations. They describe the physical setting, the volcano's geologic history, and the main characteristics of the 1985 mudflows, including areal extent and estimated flow velocities. Also described are the performance of structures located within or near the vicinity of the flows. Chapters 4 through 8 describe preeruption awareness and emergency preparedness, disaster warnings given for the 1985 eruption, disaster impacts, disaster recovery, and posteruption preparedness for another disaster. The primary purpose of the report was to compile the data that are considered perishable-the data that would be lost over a short period of time due to the recovery effort and other natural processes. The observations recorded here extend only through the study period-the first few months of 1986; they do not include events that have transpired since that date.