Santiago R Arellano¹, Bo Galle¹, Christoph Kern², Zoraida Chacon³, Claudia Rivera⁴, Diana Norgaard⁵, Silvana Hidalgo⁶, Ulrich Platt⁷ and NOVAC collaboration, (1)Chalmers University of Technology, Gothenburg, Sweden, (2)USGS, Baltimore, MD, United States, (3)Servicio Geologico Colombiano, Manizales, Colombia, (4)National Autonomous University of Mexico, Mexico City, Mexico, (5)USGS, Portland, United States, (6)Instituto Geofisico EPN - Ecuador, Quito, Ecuador, (7)University of Heidelberg, Heidelberg, Germany