Continued fluctuations in the recording of seismic activity and gas emissions of the volcano Chaparrastique .
Friday, January 22, 2016 2:56 p.m.
During the last 24 hours the values of the seismic vibration of the volcano fluctuated between 215 and 271 units RSAM averaged over an hour, with an average of 252 units. Small fluctuations continues to be recorded on the data, which means that the movement of fluids persists through volcanic conduits (Figure 1).
The data of sulfur dioxide emissions (SO2), recorded by the DOAS station, located in the municipality of San Jorge continue to show fluctuations, indicating instability of the internal system of the volcano. The statistical average for this measure is between 310 ± 170 tons / day as before the eruption of December 29, 2013.
The images captured by the surveillance camera located on Cerro El Pacayal, continue to show a combination of pulses from the crater and remobilization by the wind of material deposited by the eruption of ash, Tuesday, January 12. The speed of the prevailing wind can increase the intensity of remobilized material that move according to the direction of these winds .
The data collected through monitoring that takes place on the Chaparrastique volcano and changes in the scale of the crater emissions indicate that the internal system of the volcano is unstable and may remain so for the next few days. No increase is spread over the volcano with the possibility of ash emissions and even the appearance of magma to the surface, which is typical for an active volcano.
Including the eruption of December 29, 2013, there were a total of 23 eruptive episodes similar to those currently presented.
February 03 , 2016. Chaparrastique , El Salvador :
Source : Marn .
Photo : mfaucher.