Elaboración del mapa de peligros para el complejo volcánico Atacazo - Ninahuilca

Abstract

The volcanic hazard map is a guiding tool for territorial planning and strategic infraestructure of the state. In this case, the hazard map of the Atacazo – Ninahuilca Volcano Complex (CVAN) is fundamental, because its eruptions, have generated different products, and nowadays population, and important infrastructure or major roadways for transportation and terrestrial communication of the country are settled on the deposits. For the elaboration of the volcanic Hazard map, it was necesary geological mapping of the main product of the CVAN (ignimbrites) and numerical simulations for the other volcanic products (block and ash flows, tephra falls, secondary lahars), with the corresponding validation during field work. The eruptive scenarios considered for the CVAN include small eruptions for tephra falls with VEI of 1 or 2 and large eruptions for the other volcanic products, with VEI of 4 or 5. The final product of this work is a poster, which describes the methodologies used for the realization of the different maps of each volcanic product, the maps for the different scenarios or zones for each volcanic product and the summarized volcanic hazard map, considering the worst case scenario.