Oliver D Lamb¹, Jonathan M Lees², Luis Franco³, Jonathan Lazo⁴, Julian W Traphagan², Michael Shore⁵ and Stephen J Lee⁶, (1)University of North Carolina at Chapel Hill, Department of Geological Sciences, Chapel Hill, NC, United States, (2)University of North Carolina at Chapel Hill, Chapel Hill, NC, United States, (3)OVDAS, SERNAGEOMIN, Temuco, Chile, (4)Observatorio Volcanológico de los Andes del Sur (OVDAS), Servicio Nacional de Geología y Minería (SERNAGEOMIN), Temuco, Chile, (5)University of North Carolina at Chapel Hill, Geological Sciences, Chapel Hill, NC, United States, (6)US Army Research Office, Research Triangle Park, NC, United States