Fig. 13
From: Rapid emergency assessment of ash and gas hazard for future eruptions at Santorini Volcano, Greece
Exceedance probability curves for VP15 ash concentrations at the key nine sites, as computed by VOL-CALPUFF for individual plume heights within the Santorini Weak case for the mostly likely eruption scenario. The WHO daily threshold for good air quality (50 μg/m3) is shown by the vertical line. Note the maximum value of 0.2 on the y axis and that ash loads are shown on a base 10 logarithm scale