Hierarchization of the volcanoes of continental and insular Ecuador based on their threat potential

Abstract:

The Ecuadorian arc comprises at least 84 Plio-Quaternary volcanic centers distributed along the Andes, with 24 of them considered as potentially active (eruptive activity during the Holocene). Moderate-to-large eruptions have a high recurrence rate and a high long-term probability. In addition, 21 volcanic centers that form the Galapagos Islands were considered in our study where 13 are potentially active. The eruptive products of Ecuadorian volcanoes have covered extensive areas that are now occupied by urban areas, strategic infrastructures, farmlands, and pastures. We present the first threat prioritization of all the potentially active volcanoes employing twelve factors to assess hazard, three parameters for recent unrest, and nine criteria to evaluate the vulnerabilities following the methodology proposed by Ewert (2007). Some parameters have been modified to be suitable with the local context. Hazard factors …

Año de publicación:

2018

Keywords:

Fuente:

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