Organitzat conjuntament CSIC-UB
Thomas Casadevall
Lloc: Sala de conferències de l'Institut Jaume Almera a les 12h.


Of the Earth's 564 historically active volcanoes, the majority are of andesitic affinity and are distributed in belts or chains along the edges of several continents, such as the western regions of the Americas, and in island chains such as Indonesia, the Philippines, Japan, the Kuriles, the Aleutian islands, and the Caribbean islands. This presentation will focus on hazards from explosive volcanism, particularly on drifting clouds of volcanic ash which threaten aviation operations. Volcanic ash clouds may drift for hundreds to thousands of miles from their sources and can contaminate large volumes of airspace. Ash clouds may drift over several countries and into different Flight Information Regions (FIRs) and Air Traffic Control (ATC) jurisdictions. At times, ash from a single eruption can contaminate a heavily used airspace region. This causes flights to be diverted, delayed, or canceled. Given the nature of today's long range flight operations, a single eruption can