A fascinating talk by Tricia Nadeau, USGS Hawaiian Volcano Observatory, on volcanic gas monitoring at Kīlauea:
...after an eruption with fire-fountaining, researchers need snowshoes to walk across the fresh fluffy tephra, which can be 25 meters deep close to the crater. The tephra has to be removed from the monitoring stations after each eruption.
#Volcanology #Kilauea #Hawaii #VolcanicGas #USGS_HVO #McGillUniversity








