The MARN - Ministerio de Medio Ambiente y Recursos Naturales - indicates in its report of 8 February that, given the current behavior of the volcano San Miguel / Chaparrastique , another eruption
Chaparrastique - epicentres of earthquakes between January 27 and February 7, 2014 - Doc. MARN
Since 27 January, 67 earthquake marked the northern flank of Chaparrastique , three on 05 and 06.02 . The volcanic tremor remained at a high level , with 297 to 356 hourly units , at the seismic station of San Miguel, on February 6 . These shocks reflect subsequent fracturing rocks to internal pressure and constant movement of fluids ( gas, water, magma) within the structure.
On February 6 , a plume of light gray gas did not exceed 150 meters above the volcano, and SO2 values are between 0.009 and 0.208 ppm.
It is suspected that the next eruption could be characterized by small explosions and / or an emanation of lava sufficiently viscous to allow people threatened to escape these flows.
Chaparrastique - eruptive plume 12/29/2013 - photo RSOE
Since Jan. 29 , when an explosion marked the Chaparrastique , volcanologists began to increase monitoring by installing additional equipment ( 9 GPS , 5 seismic stations , acoustic sensors) partially provided by the Italian INGV. Otherwise a fine of population census and facilities in risk areas is underway.
Chaparrastique - the overview on 01/01/2014 - photo MARN
The need to remain vigilant .
The Chaparrastique / San Miguel is one of the most active volcanoes in El Salvador. This basalto-andesitic stratovolcano culminates at 2130 meters, headed by a deep and wide crater. Radial cracks on its sides channeled the historic lava flows , some of which have reached the Northern and eastern bases of the volcano in 17-19 centuries.
Eruptions of San Miguel and frequency, compared to other neighboring Salvadorans volcanoes since 1900 - Doc. MARN
- Global Volcanism Program - San Miguel