Subject: Bulletin activities of volcanoes Chiles and Cerro Negro.
The level of volcanic activity is maintained at level: YELLOW or (III): changes in the behavior of volcanic activity
About the monitoring of the activity of volcanoes Chiles and Cerro Negro, the Colombian Geological Service reports that:
Compared to the previous week, the daily presence of events showed a decrease from 152 to 106 earthquakes. Seismic activity continues to be dominated by events related to rock fracturing. However, some events whose the characteristics indicate a fluid movement are highlighted. The vast majority of earthquakes were located at distances up to 4 km in the southwest sector of the Chiles volcano, with depths between 0.5 and 9 km of the volcanic peak. The calculated maximum local magnitude was M1,0 on the Richter scale. Temperature values recorded in the hot springs area of Baño Grande remain stable, with an average value of 43 ° C.
The trend of low levels of seismic events is maintained. However, it is possible to see the occurrence of earthquakes of energy that could be felt by residents in the volcanic influence. The SGC-OVSP and IGEPN closely follow the evolution of the volcanic phenomenon and promptly notify the changes that are detected, particularly those that demonstrate a probable eruption.
February 21 , 2016. Chiles et Cerro Negro , Colombia :
Source : SGC.
Photo : Ingeominas.