The 2018 Hazards Assessment Workshop in Arequipa, Peru brought together 35 geoscientists charged with creation and updating of volcanic hazards maps and hazards assessments from 14 countries, most of which are in the Latin America region. Scientists discussed fundamental processes of transport and deposition of volcanic materials. They learned about the appropriate use of several different modeling tools for dispersal of volcanic sediments, including volcanic ash, pyroclastic flows, and lahars. They discussed existing volcanic hazards assessments/maps from their host institutions/countries and shared case examples of parts that have been particularly effective in hazard communication. Participants worked to create a single document that records possible elements of future volcanic hazards assessments and documents exemplary cases of each of these elements. This document will be integrated into a consensus document in progress by the Working Group on Hazards Map of the IAVCEI Commission on Hazards and Risk.
