Nevado Del Ruiz, Colombia : seismic volcanic tremor signal.

Nevado Del Ruiz, Colombia : seismic volcanic tremor signal.

Bulletin of activity extraordinary of the volcano Nevado del Ruiz, December 20, 2015
The level of activity : Yellow or (III) remains: changes in the behavior of volcanic activity.

Regarding the monitoring of the activity of the Nevado del Ruiz volcano, the SERVICIO Geologico COLOMBIANO reports:

This December 20, today at 12:47 (local time) until the time of issue of this newsletter, a seismic volcanic tremor signal with variable energy values is recorded. This signal was associated with an significant emission of ash into the atmosphere, which was confirmed by officials reports and photographs of Los Nevados National Park, staff ASDEGUIAS, workers of Cerro El Recreo , people living near the volcano and the city of Manizales. Associated with issuing and ash fall, there have been many reports of strong smell of sulfur. The SO2 concentration values recorded by the permanent DOAS stations installed in the volcano area, note the highest values measured so far in the monitoring of the Nevado del Ruiz volcano in its current activity cycle.

This activity is part of the instability encountered by the volcano since 2010 and this year has been highlighted by the continuous and important recording of ash emissions processes, associated with tremor signals, as has been reported by weekly newsletters published on the site.

If you experience ash fall, please, report it to SERVICIO Geologico COLOMBIANO at its headquarters in the city of Manizales. It is recommended that the authorities and the community to continue to be in alert to any change in the activity of the volcano and consider recommendations for such events, including the use of masks. Do not rule out that other changes may occur in the behavior of volcanic activity that would indicate a greater system instability.

The SERVICIO Geologico COLOMBIANO closely follows the evolution of the volcanic phenomenon and will continue to report timely to the changes that may occur.

December 22, 2015. Nevado Del Ruiz, Colombia :

Source : SGC

Photos : SGC ( Nov 2015 , Juil 2015)

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