School of Mathematics Colloquium, University of Bristol
Hazards tend to be summarized in terms of their frequency/magnitude curve. For explosive volcanic eruptions, a supereruption at the top end of the magnitude range is large enough to return us to a "pre-civilisation state", but even a large eruption poses a serious hazard for a country. Inferring the global frequency/magnitude curve from the volcanic record is complicated, because the record is unreliable going back more than a few hundred years. In this talk I will look at the maths of the frequency/magnitude curve, show and discuss the curve we fitted for large explosive volcanic eruptions, and describe the response of the media to our results.