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COLIMA EXCHANGE AND RESEARCH IN VOLCANOLOGY






Geochemical Monitoring (Diffuse gases)

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Only a proportion of magmatic gases are released from the crater and form the volcanic plume. A significant proportion diffuse through the wall of the magma chamber and conduit and can later be measured within the soil of the flanks of the volcano. A map is being created of CO2 and Rn concentrations over the edifice. This will indicate regions of enhanced degassing, generally represented by faults.
Monitoring of the temporal variation the diffuse degassing can give an indication of the movement of a magma body. Periodic measurements of CO2 have been made and a couple of locations. A solid-state probe has been installed to measure the fluctuation in Rn concentration. Additionally, a monitoring site using plastic track-etch detector has been established at La Lumbre. The detector is changed every month and upon processing gives the integrated Rn concentration at this point.





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Plume to South 20th September 2002

Volcanic plume towards the south, 20th of September 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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