Author(s)

E. Aguilera, L. Cavarra, M.T. Pareschi & M. Rosi

Abstract

The lahars triggered by snow and ice melting during the 1877 explosive eruption of the volcano Cotopaxi have been simulated. A numerical model, based on mass and momentum balance, under the assumption of constant volume (no sedimentation, no erosion) and homogeneous flow (constant sediment concentration and no significant differences between water/grains velocity), has been used. The maximum heights reached along the northward and the southward paths of the 1877 lahars were reproduced by the simulations. Comparison with the historical chronicles allowed us to infer the total volume of 150 mil nP, for the south lahar, and a volume of 60 mil m^, for the north lahar. 1 Introduction "Lahar" is an Indonesian word used i

Keywords