HR: 1400h
AN: V33B-07    [Abstracts]
TI: Energy balance at North Glacier's surface of Citlaltépetl volcano (Mexico): understanding glacier behavior at a non-eruptive volcano.
AU: * Ontiveros, G
EM: dremomemone@gmail.com
AF: Instituto de Geofísica, Universidad Nacional Autónoma de México., C.U., Coyoacán., Mexico D.F., 04510, Mexico
AU: Delgado Granados, H
EM: hugo@geofisica.unam.mx
AF: Instituto de Geofísica, Universidad Nacional Autónoma de México., C.U., Coyoacán., Mexico D.F., 04510, Mexico
AU: Alvaez Nieves, J
EM: nieves32@hotmail.com
AF: Instituto de Geofísica, Universidad Nacional Autónoma de México., C.U., Coyoacán., Mexico D.F., 04510, Mexico
AU: Diaz Molina, O
EM: oscard@igeofcu.unam.mx
AF: Instituto de Geofísica, Universidad Nacional Autónoma de México., C.U., Coyoacán., Mexico D.F., 04510, Mexico
AB: Mexican glaciers are located on Iztaccíhuatl and Citlaltépetl volcanoes and at both sites they are retreating. The glaciers of Popocatépetl volcano are currently considered extinct after the combination of climate forcing and eruptive activity. It is difficult to distinguish at eruptive volcanoes how important the climatic factors conduct to the disappearance of glaciers. In order to recognize the importance of the regional climatic factors, previous to reactivation of any of the other two volcanoes, and better understand the volcano/glacier interactions, it is needed to study both parts of the system independently: volcanic activity and the glacier behavior. In this work we present the methodology used to calculate the energy balance at the glacier's surface at the north face of Citlaltepetl volcano and the results of this calculation. We use the data collected over a period of 10 months by two meteorological stations installed on the glacier's surface and on a rock buttress at 5000 meters above sea level. This volcano was chosen because it permits to study the glacier behavior without the influence of eruptive activity.
UR: http:www.geofisica.unam.mx/popoc/colaboracion/GTNH/
DE: 0360 Radiation: transmission and scattering
DE: 0720 Glaciers
DE: 0764 Energy balance
DE: 0776 Glaciology (1621, 1827, 1863)
DE: 8409 Atmospheric effects (0370)
SC: Volcanology, Geochemistry, and Petrology [V]
MN: 2007 Joint Assembly