Definición de mapas de afectación por flujo de lahares primarios, mediante el uso de modelación numérica

Abstract

The eruptive activity of the Cotopaxi volcano is characterized by earthquakes related to the movement of fluids inside the volcano, emission of sulfur dioxide (SO2) and surface activity (gas, ash and solid material emission), which can generate lahar flow from the top of the volcano to lower zones. With a relatively large period of recurrence (last significant eruption is recorded by June 1877), that is to say, 140 years until the current period of reactivation, human settlements and infrastructure associated with them have developed along the riverbeds and plains that naturally correspond to the drainage, where lahar flows go through them from the volcano. The main objective of this work is to generate updated, useful and accurate information regarding the areas that would be affected by a possible volcanic eruption and based on the results obtained with the one-dimensional numerical simulation for non-permanent flow using the HEC-RAS program, to prepare georeferenced and updated maps of the affected areas generated by the primary lahar flows in the south flank, using as topographic basis a digital elevation model with the best spatial resolution available