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Authors: Bonasia, R.*
Costa, A.*
Folch, A.*
Macedonio, G.*
Capra, L.*
Title: Numerical simulation of tephra transport and deposition of the 1982 El Chichón eruption and implications for hazard assessment
Title of journal: Journal of volcanology and geothermal research
Series/Report no.: /231-232 (2012)
Publisher: Elsevier Science Limited
Issue Date: 2012
DOI: 10.1016/j.jvolgeores.2012.04.006
Keywords: Fallout deposit
1982 El Chichón eruption
Hazard assessment
Abstract: El Chichón volcano, Chiapas, Mexico, erupted explosively on March 29th, 1982, after a repose period of about 550 years. Amongst ten eruptive episodes documented between March 29th and April 4th, only the three that occurred on March 29th and April 4th produced significant pyroclastic tephra deposits. Here we use analytical (HAZMAP) and numerical (FALL3D) tephra transport models to reconstruct the deposits and the atmospheric plume dispersal associated with the three main fallout units of the 1982 eruption. On the basis of such a reconstruction, we produce hazard maps of tephra fallout associated to a Plinian eruption and discuss the implications of such a severe eruption scenario.
Appears in Collections:04.08.08. Volcanic risk
Papers Published / Papers in press

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