Fig. 8From: Improving volcanic ash fragility functions through laboratory studies: example of surface transportation networksRelative importance of additional HIMs at key ash thickness intervals (a-e). The charts consider the impact types of skid resistance reduction and road marking coverage in combination. Values towards the outside of the radar charts indicate lower rank values / greater importance for surface transportation disruption. The key shows the particular characteristic of each HIM responsible for greater disruptionBack to article page