TY - JOUR
T1 - Numerical simulation of tephra transport and deposition of the 1982 El Chichón eruption and implications for hazard assessment
AU - Bonasia, Rosanna
AU - Costa, Antonio
AU - Folch, Arnau
AU - Macedonio, Giovanni
AU - Capra, Lucia
N1 - Funding Information:
The authors would like to thank an anonymous reviewer and Roberto Sulpizio for constructive reviews of this manuscript. J.L Macías is also acknowledged for helpful discussions on the eruption deposits. This work was mainly supported by the CONACYT Project no. 99486 (Lucia Capra) and the Spanish project ATMOST ( CGL2009-10244 ). NCEP-reanalysis data were provided by the NOAA/OAR/ESRL PSD, Boulder, Colorado, USA, from their Web site at http://www.esrl.noaa.gov/psd/ . Reconstruction of the distal deposit and the volcanic plume dispersion was performed at the MareNostrum supercomputer (BSC-CBS, Barcelona, Spain) using the parallel version of the FALL3D code.
PY - 2012/6/15
Y1 - 2012/6/15
N2 - 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.
AB - 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.
KW - 1982 El Chichón eruption
KW - FALL3D
KW - Fallout deposit
KW - HAZMAP
KW - Hazard assessment
UR - http://www.scopus.com/inward/record.url?scp=84860378640&partnerID=8YFLogxK
U2 - 10.1016/j.jvolgeores.2012.04.006
DO - 10.1016/j.jvolgeores.2012.04.006
M3 - Artículo
SN - 0377-0273
VL - 231-232
SP - 39
EP - 49
JO - Journal of Volcanology and Geothermal Research
JF - Journal of Volcanology and Geothermal Research
ER -