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Volcanic eruption in Ecuador

Tuesday, 22 January 2008

Type of Event:
Location of Event:
Date of Charter Activation:
22/01/2008 12:22 UTC
Charter Requestor:
SIFEM Argentina
Project Management:
Instituto geofisico, Ecuador

Description of the event

Since October 2007, the Tungurahua volcano has been showing sustained increased activity, particularly in the number and size of explosions. This activity increased on 29 December, when the number of explosions registered in one day exceeded 100. On 2 January 2008, the highest number of explosions was registered since September 2006. On the 6 January, nearly 1,000 people were evacuated. Seismic activity has intensified, and at present is similar to that registered in May 2006, previous to the eruptions and pyroclastic flows of July and August that same year.  

Tungurahua, Spot-5 image

Source: Spot-5, 5m/pixel resolution.
Acquired: 20/01/2005 Simulation of pyroclastic flows at Tungurahua on a SPOT image.

Copyright: CNES 2005 Image processing, map created 02/2008 by IG-EPN.

Topographical Map of the Tungurahua Volcano

Source: -, 40m/pixel resolution.
Deformation, recorded 15-18/10/2007

Source: RETU tilt meter, - resolution.
Acquired: 2006-2008 Deformation measured by RETU tilt meter station, located 2 km from the summit of the volcano. The abrupt increase in inclination around 2007.8 corresponds to October 15th-18th, 2007

Copyright: IG-EPN Image processing, map created 02/2008 by IG-EPN.

Pyroclastic Flow Simulation

Source: -, 20m/pixel resolution.
Acquired: - Example of simulation of pyroclastic flows at Tungurahua. This simulation was done with older 20m-resolution topography.

Copyright: IG-EPN Image processing, map created 02/2008 by IG-EPN.

Seismic Activity 2006-2008

Source: -, - resolution.
Acquired: 2006-2008 Seismic activity of Tungurahua volcano from January 2006 to January 2008. Notice the increasing tendency of three plotted parameters. IED = Energy daily index, ICD=Number of events, IAS= Seismic Activity Index (local parameter).

Copyright: IG-EPN 2006-2008 Image processing, map created 02/2008 by IG-EPN.