Cerro Negro de Mayasquer volcano news & activity updates:
Cerro Negro de Mayasquer volcano (Colombia): continuing earthquakes
Friday May 30, 2014 09:42 AM | DOOR: T
Unrest at the volcano continues in the form of earthquakes under the Chiles-Cerro Negro volcanic massif. During the past week, the monitoring network recorded around 6500 quakes, mostly located less than 4 km SW from the summit at depths ranging between 1 and 8 km and with magnitudes of up to 4.0 on the Richter scale.
Most of the earthquakes are volcanic-tectonic, i.e. associated with the fracturing of rock due to fluid pressure underground.
On May 21, 3 earthquakes at 02:53, 15:44 and 18:46 local time were felt felt by local inhabitants.
Saturday, May 10, 2014
The seismic crisis under the volcano continues. Thousands of small earthquakes, both volcano-tectonic (due to rock fracturing caused by magma pressure) and long-period (due to fluid movements) earthquakes continue to be registered. ... [meer...]
Friday, May 02, 2014
The alert level of the twin-volcanoes Cerro Negro and Chiles has been raised to yellow in response to an ongoing seismic crisis and deformation that has been detected since November 2013, when a new monitoring network had been installed. ... [meer...]