Fig. 4From: Lava flow hazard prediction and monitoring with UAS: a case study from the 2014–2015 Pāhoa lava flow crisis, Hawai‘iElevation values from an independent GPS survey of 32 points collected within the area of the pre-flow DEM plotted against elevation values extracted from the 1 m UAS-derived DEM (blue dots) and the 10 m USGS DEM (orange dots)Back to article page