Use of MODIS images to study eruptive clouds from volcan de fuego de colima (Mexico) and applications on volcano monitoring

Jose Carlos Jiménez-Escalona, Hugo Delgado Granados, Vincent J. Realmuto

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Volcano monitoring using satellite images may provide periodic information on gas emission fluctuations such as S0inf2/inf emissions related to the processes occurring inside volcanoes. This study analyses a period of 36 days (May 10 to June 15, 2005) of processing 113 MODIS images for the detection of S0inf2/inf. Within this period it was also possible to detect and quantify 8 of 15 explosive events reported by the Washington VAAC. With the satellite images as tools for monitoring the volcanic emissions, it was possible to determine three cases related to volcanic ashes: 1) follow up of volcanic ash and gases transported by wind, 2) calculation of ash-cloud residence time in the atmosphere, 3) effects of shearing winds during the ascent of an ash plume. Regarding the continuous monitoring of passive emissions of S0inf2/inf, there is a relationship among explosive events and increasing peaks of S0inf2/inf emission suggesting a difference of approximately 2 days between the two events that may anticipate the type of behavior of the volcano.
Original languageAmerican English
Pages (from-to)199-210
Number of pages177
JournalGeofisica Internacional
StatePublished - 1 Apr 2011


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