UNMANNED AIRCRAFT APPLICATIONS FOR ACTIVE VOLCANO MONITORING
Due to high levels of gas emissions and frequent explosions, fine-scale measurements of vent geometry from single flights were challenging. However, the compilation of data acquired over 12 flights used with Structure from Motion software generated a very high-resolution 5 cm Digital Elevation Model (DEM) offering a non-obstructed view into the active craters. Such direct observations permits us to constrain the influence of parameters such as vent geometry and depth on eruptive style with an unprecedented precision, also potentially reducing the uncertainty entering into models that utilize such inputs (e.g. conduit and acoustic models). Furthermore, the low-cost and safety of UAS allows mapping changes at small temporal and spatial resolutions, making this technique complementary to geophysical monitoring efforts at active volcanoes.