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CENTRE OF EXCHANGE AND RESEARCH IN VOLCANOLOGY






2011

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Effusive eruption – April 2011

There are signs of a decrease in the eruption rate with a drop off in the number of rockfalls occurring. This is the first clear decrease noted since the current episode commenced in January 2007. The number of explosions is also decreasing. Quite what this means is difficult to forecast after such a sustained period of fairly constant activity.


Effusive Eruption – February 2011

The months continue to advance with little change in the characteristics related to the effusive eruption of the volcano. The dome remains the same size with all new lava forming on the western lobe. No significant volume of lava can sustain itself for very long on this steep flank, which results in the frequent rockfalls. Current research includes an analysis of the rockfall volumes using different techniques: quantifying the volume of dome lost, the thermal emissions from the rockfall and the seismic signal.


22Feb Flight
The photo taken from a flight in February shows the grey western lobe, as well as a fresh explosion crater in the SE sector.


rockfall


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First Rockfall febuary 2002

First rockfall after lava spilled over crater rim - Feb. 2002


Address

Centre of Exchange and
Research in Volcanology
Faculty of Science
University of Colima

Bernal Díaz del Castillo #340
Col. Villas San Sebastián, C.P. 28045
Colima, Colima, México

Phone:
  • +52 (312) 316-1000 ext. 48002
  • 316-1135 (Faculty Secretary)
Email:
visits
since 01/10/2005

Author: Dr. Nick Varley
Design: Till Sonnemann , Carlos Banda and Luis Banda
Updating: Luis García, Fernando Velázquez
Last Changes: 25th-September-2011
URL of this page: www.ucol.mx/ciiv

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