Weekly activity report of Cerro Machin volcano, from 07 June to 13 June 2016
The level of activity continues at:
Activity level Yellow or (III): changes in the behavior of volcanic activity.
Regarding the monitoring of the activity of the Cerro Machin volcano, the Servicio Geologico Colombiano reports:
During the last week on the volcano Cerro Machin, it was recorded seismic activity related to the fracturing of rocks in the volcanic structure. A slight increase in seismic activity on June 12, between 3h22 and 3h50 (local time), with earthquakes which were located in the southwest of the main dome, at depths between 3.3 and 4.0 km has been highlighted. The maximum amplitude of the increase was 0.3 ML (local magnitude).
Since 9 June, it was recorded seismic activity in the south of the volcano, at depths between 4.1 and 7.6 km. The maximum recorded magnitude of 2.4 ML (local magnitude), corresponding to an earthquake on June 9 at 19:47 (local time). Many of these earthquakes were reported as felt by people in the immediate vicinity of the volcano, as well as in the city of Cajamarca. This seismic activity is possibly associated with geological faults in the vicinity of the volcanic structure.
Other monitored parameters show no significant change.
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June 16 , 2016. Cerro Machin , Colombia :
Source : Servicio Geologico Colombiano