for the
airlines. In the 1990's, to
address the problem of hazard due to
volcanic
ash encounter the International
Civil Aviation Organization (ICAO)
established consultant
centers around the world for
advice regarding
ash
dispersal. These are the Volcanic
Ash Advisory Centers (VAAC) and they are
currently nine worldwide:
Anchorage,
Buenos Aires, Darwin, London, Montreal,
Tokyo, Toulouse, Washington
/volcanoes/volcanic-hazards/volcanic-emissions/