Assay of satellite methodology for volcanic ash classification : Calbuco volcano case

Abstract

The dispersion of volcanic ash in the atmosphere, as a result of volcanic eruptions or the subsequent re-suspension of volcanic ash deposits, causes environmental impacts and disruptions in human activities at different scales. It is possible to monitor volcanic ash clouds through remote sensors mounted on satellites. This work presents a satellite methodology test, based on the use of MODIS sensor on board the TERRA and AQUA satellites, for the classification of pixels with volcanic ash. The eruption of Calbuco Volcano in April 2015 in Chile was selected as a case study. These results could be used as an analysis tool at Volcanic Ash Advisory Centers (VAAC).