Special volcanic activity report (REAV).
Region of Los Lagos. June 23, 2016 1:20 p.m. (local time).
The National Geology and Mining Service (SERNAGEOMIN) describes the following information achieved by the surveillance equipment processed and analyzed by the Volcanological Observatory of Southern Andes, interpretation of the data center from the national volcano monitoring network:
Over the past three days, there has been an increase in seismic activity under the volcano Calbuco, represented by the recording of a total of 161 events related to the fracturing of cortical material (VT type ), which were located on the volcanic edifice, at a distance of 1 to 4 km NW of the active crater and at 8-10 km depth.
Similarly, in the last period, there was an upward variation of the electronic inclinometer records (equipment for measuring deformation of the crust), located 4.5 kilometers west of the crater, which represents a cumulative increase of 60 mrad, suggesting an inflationary process.
The above observations suggest the activities of a deep magma chamber that would lead to increased seismic activity and crustal deformation. It is therefore concluded that the volcanic system is unbalanced, beyond its basic level. Therefore, the level of technical alarm is raised to alert level yellow, with particular attention to its evolution
Under these conditions, is considered as high risk zone the area immediately near the main crater, less than 2 km, and it is recommended to limit the access of this zone.
SERNAGEOMIN continuous online monitoring and report timely to the changes in volcanic activity in the region.
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June 24 , 2016.Calbuco , Chile :
Source : Sernageomin.
Photo : Wikipedia