Subject: Weekly Bulletin of volcanic activity of the volcano Nevado del Huila
The level of activity of the volcano continues at level:
Activity level Yellow or (III): changes in the behavior of volcanic activity.
Following the analysis and evaluation of information obtained by the volcano monitoring network of the Nevado del Huila, during the week between 18 and 24 May 2016, the Colombian Geological and Seismological Service and the Observatory of Popayan reported:
During the period evaluated 110 seismic events were recorded, of which 33 were related to rock fracturing process (type VT) and 77 with fluid dynamics in volcanic conduits.
Among these, 75 were classified as long-period events (type LP), as a low-energy pulse Tremor (TR) and another as a hybrid event, both associated with mechanisms fracture and fluid movement (type HB).
During the week, it was possible to obtain images of webcams Caloto, Tafxnú, Maravillas, La Palma and Verdun, where low outgassing from volcanic system was appreciated.
Sensors for deformation monitoring techniques, control of magnetic fields and the acoustic sensors have not recorded changes associated with volcanic activity.
Therefore, it is concluded that during the evaluation period, the volcano continued to show stable behavior.
The Colombian Geological and Seismological Service continues to be alert and report timely to the changes that may occur.
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May 30 , 2016.Nevado del Huila , Colombia :
Source : SGC