Ambient Noise Tomography of Nevado del Ruiz Volcano, Colombia

David James Miller1, Cristian M Lopez2, Jeremy D Pesicek3, Nancy Trujillo Castrillón4, Alvaro Esteban Acevedo5 and Lina García2, (1)University of Wisconsin Madison, Department of Geoscience, Madison, WI, United States, (2)Colombia Geological Survey, Manizales, Colombia, (3)USGS Cascades Volcano Observatory, Vancouver, WA, United States, (4)Servicio Geológico Colombiano Manizales, Department of Geological Hazards, Manizales, Colombia, (5)Colombian Geological Survey, Manizales, Colombia