During this period, earthquakes fracture -type, located less than 6 kilometers from the crater (called VTP or proximal volcano tectonic) showed an average rate of 11 VTP / day with a maximum peak power on 8 August (84 MJ ). The rate of hybrid-type events have reached a peak of 18 events with 1053 MJ on August 5, but declined in the following days.
LP seismicity continued to increase for three consecutive periods, recording an average of 99 LP / day (previously, it was 72 LP / day). The maximum height of fumaroles, compared to the previous period decreased in general, and were observed up to 1500 meters above the crater. It was distinguishable whitish gas (water vapor) and sporadic emissions of blue stains (magmatic gases). During this period, it was not detected any type of thermal anomaly or, density variation in SO2 emissions.
August 12, 2015. Sabancaya, Perou .
Source : IGP Perou
Photo : pachamamaradio