Chronology of the 2014-2016 eruptive phase of Volcán De Colima and volume estimation of associated lava flows and pyroclastic flows based on optical multi-sensors
Por:
Dávila N., Capra L., Ferrés D., Gavilanes-Ruiz J.C., Flores P.
Publicada:
1 ene 2019
Categoría:
Earth and planetary sciences (miscellaneous)
Resumen:
The eruption at Volcán de Colima (México) on 10-11 July 2015 represents the most violent eruption that has occurred at this volcano since the 1913 Plinian eruption. The extraordinary runout of the associated pyroclastic flows was never observed during the past dome collapse events in 1991 or 2004-2005. Based on Satellite Pour l'Observation de la Terre (SPOT) and Earth Observing-1 (EO-1) ALI (Advanced Land Imager), the chronology of the different eruptive phases from September 2014 to September 2016 is reconstructed here. A digital image segmentation procedure allowed for the mapping of the trajectory of the lava flows emplaced on the main cone as well as the pyroclastic flow deposits that inundated the Montegrande ravine on the southern flank of the volcano. Digital surface models (DSMs) obtained from SPOT/6 dual-stereoscopic and tri-stereopair images were used to estimate the volumes of some lava flows and the main pyroclastic flow deposits. We estimated that the total volume of the magma that erupted during the 2014-2016 event was approximately 40 × 107 m3, which is one order of magnitude lower than that of the 1913 Plinian eruption. These data are fundamental for improving hazard assessment because the July 2015 eruption represents a unique scenario that has never before been observed at Volcán de Colima. Volume estimation provides complementary data to better understand eruptive processes, and detailed maps of the distributions of lava flows and pyroclastic flows represent fundamental tools for calibrating numerical modeling for hazard assessment. The stereo capabilities of the SPOT6/7 satellites for the detection of topographic changes and the and the availability of EO-1 ALI imagery are useful tools for reconstructing multitemporal eruptive events, even in areas that are not accessible due to ongoing eruptive activity. © 2019 by the authors.
Filiaciones:
Dávila N.:
Laboratorio de Ciencia y Tecnología de Información Geográfica, Facultad de Geografía, Universidad Autónoma del Estado de México, Toluca, Estado de México, 50100, Mexico
Univ Autonoma Estado Mexico, Lab Ciencia & Tecnol Informac Geog, Fac Geog, Toluca 50100, Estado De Mexic, Mexico
Capra L.:
Centro de Geociencias, Universidad Nacional Autónoma de México, Juriquilla, Querétaro, 76230, Mexico
Univ Nacl Autonoma Mexico, Ctr Geociencias, Juriquilla 76230, Queretaro, Mexico
Ferrés D.:
Centro de Geociencias, Universidad Nacional Autónoma de México, Juriquilla, Querétaro, 76230, Mexico
Univ Nacl Autonoma Mexico, Ctr Geociencias, Juriquilla 76230, Queretaro, Mexico
Gavilanes-Ruiz J.C.:
Facultad de Ciencias, Universidad de Colima, Colima, 28045, Mexico
Flores P.:
Estación Recepción México (ERMEX), 22a Zona Militar SEDENA, Sta Ma. Rayón, Estado de México, 52360, Mexico
Estn Recepc Mexico ERMEX, 22a Zona Mil SEDENA, Sta Ma Rayon 52360, Estado De Mexic, Mexico
Univ Colima, Fac Ciencias, Colima 28045, Mexico
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