Fig. 9

Schematic illustration of the ways in which PDC hazard is depicted in the maps in the survey (based on all single hazard PDC depictions n = 15). A Dashed outline of maximum PDC extent (n = 1), B Striped area (n = 1), C Coloured solid line (n = 1), D Red to Yellow colour scheme indicating relative probability of specific scenarios (n = 1), E Two colours within the red to yellow colour scheme, e.g., red to orange (shown), or orange to yellow, indicating different hazard levels (n = 6), F Single colour, in some instances using dark to light tones to differentiate pyroclastic flow and pyroclastic surge and/or a buffer zone (shown) (n = 5)