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Activity of Volcán of Colima Introduction History 2001 - 2003 2003 - Sept. 2004 Sept. - Dec. 2004 2005 2006 2007 2008 2009 2010

Geochemical, Thermal and Infrasound Monitoring Introduction Flux of SO2 Monitoring of waters Thermal emission Diffuse gases Infrasound Data analysis

Voluntary Programme of Student Assitance Introduction Activities Students Projects Social Service Summer Research Visiting Students EHaz Comments Volunteering/Internship Special Activities Participants

Isla Socorro Map Geology Research Projects Archipielago

Volcanoes of Chiapas Projects El Chichón Tacaná

Teaching

Staff Nick John Juan Carlos Carlos Banda Luis Banda Ignacio Galindo

Volcanological Observatory

Faculty of Science

University of Colima

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since October 1st, 2005

2007

Versión española

June

Infrared image of dome from June flight

 

A further flight on 5 June confirmed that the dome that was observed in February has grown no further and is now cooling down. The hottest parts of the crater were now some of the small explosion craters where temperatures hotter than 400 degrees C were recorded.

April-May

Infrared image of explosion on 20 May

Activity continued at low levels with some 3-4 explosions per day but the majority being quite small. Occasionally however, there were larger events producing incandescence if seen at night and ballistics. One of these was captured very nicely with the infrared camera. In the image you can see ballistics impacting with the flank. White areas are hotter than 50 degrees C.

March 2007

Observations from a flight on the 6^th March indicated that the dome had not grown significantly since the previous observation on 9^th Feb. It is possible that the effusion is occurring in pulses and further growth will be later observed. This type of activity occurred in 2001.

Unfortunately the infrared camera had to go for repair during March so there is a gap in the data.

January- February 2007

Fumarole temperatures were measured to have declined further at the end of January. A flight in early February noticed a new rocky mass within the crater. Further helicopter flights with data from the infrared camera confirmed it was a new extrusion but apparently growing very slowing, perhaps in a similar fashion to 2001. On 9 February the diameter was estimated at 80-90 m with temperatures recorded up to 380 °C.

Towards the end of the February and in March fumarole temperatures showed an increasing tendency. This was related to the superficial magma body.