Monitoring surface activity of Nevado del Ruiz volcano, Colombia


Mie Ichihara1, Takayuki Kaneko2, Lina M Castaño3, Carlos Alberto Ospina4, Oscar Cadena5, Beatriz Galvis3, John Makario Londono3 and Calros Andrés Laverde6, (1)University of Tokyo, Bunkyo-ku, Japan, (2)Univ Tokyo, Tokyo, Japan, (3)Colombia Geological Survey, Manizales, Colombia, (4)Colombia Geological Survey, Popayán, Colombia, (5)Servicio Geológico Colombiano Pasto, Pasto, Colombia, (6)Colombia Geological Survey, Pasto, Colombia