Special Volcanic Activity Report (REAV)
Bío Bío Region October 1, 2015 4:00 p.m. HL.
The National Service of Geology and Mining (SERNAGEOMIN) and its National Volcanic Monitoring Network, through its Volcanological Observatory of Southern Andes (OVDAS), announced that:
Around 10:58 hl today, there has been a significant change in the internal activity of the volcano Copahue, represented by the recording of a continuous seismic tremor signal (related to fluid dynamics inside the volcano) with a reduced displacement of 1,6cm2 (value considered as low to moderate ) by the reference station, which persists at the time of issuance of this report.
Note that this type of seismic signals accompanying eruptive activity of episodes of instability as above , with pulsating explosions and ash emissions from the crater. Therefore, it is interpreted that this type of seismic activity is related to the mobilization of magmatic material at surface levels and the disruption of deep hydrothermal system, increasing the possibility of generation of new explosions in the crater .In the current scenario, the volcanic hazard to adjacent and proximal areas of the crater remains and consequently it is recommended that a 2.5 km exclusion zone around the crater El Agrio persists .The technical warning level remains yellow.
The SERNAGEOMIN – OVDAS continuously monitors with particular attention the Copahue volcano, and timely inform on possible changes in his activity .
October 03 , 2015. Copahue , Chili :
Source : SERNAGEOMIN – OVDAS
Photo : Sernageomin