Volcanic hazard zonation of the Nevado de Toluca volcano, Mexico
Por:
Capra L., Norini G., Groppelli G., Macías J.L., Arce J.L.
Publicada:
15 oct 2008
Resumen:
The Nevado de Toluca is a quiescent volcano located 20 km southwest of the City of Toluca and 70 km west of Mexico City. It has been quiescent since its last eruptive activity, dated at similar to 3.3 ka BP. During the Pleistocene and Holocene, it experienced several eruptive phases, including five dome collapses with the emplacement of block-and-ash flows and four Plinian eruptions, including the 10.5 ka BP Plinian eruption that deposited more than 10 cm of sand-sized pumice in the area occupied today by Mexico City. A detailed geological map coupled with computer simulations (FLOW3D, TITAN2D, LAHARZ and HAZMAP softwares) were used to produce the volcanic hazard assessment. Based on the final hazard zonation the northern and eastern sectors of Nevado de Toluca would be affected by a greater number of phenomena in case of reappraisal activity. Block-and-ash flows will affect deep ravines up to a distance of 15 km and associated ash clouds could blanket the Toluca basin, whereas ash fal
Filiaciones:
Capra L.:
Univ Nacl Autonoma Mexico, Ctr Geociencias, Queretaro 76230, Mexico
Norini G.:
Univ Nacl Autonoma Mexico, Ctr Geociencias, Queretaro 76230, Mexico
Groppelli G.:
C.N.R. - Istituto per la Dinamica dei Processi Ambientali, Milano, Italy
Macías J.L.:
Univ Nacl Autonoma Mexico, Inst Geofis, Mexico City, DF, Mexico
Arce J.L.:
Univ Nacl Autonoma Mexico, Inst Geol, Mexico City, DF, Mexico
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