LP type Earthquakes associated with a fluid movement increased in number and energy during the past week. On average, 357 LP / day were observed.
Similarly, the energy of this type of seismic activity increased slightly. An energy of 7 MJ / day was observed.
Hybrid seismic activity, linked to the rise of magma, presented an average of seven Hybrid per day, less than the number detailed in the previous report (18 Hybrid / day-Report No. 02-2016). In addition, the energy of this type of event is at a low level.
The type of VT seismicity (earthquakes associated with the fracturing of rocks) in this period showed a decrease in the number of observed earthquakes, averaging 143 VT / day (Report No. 02-2016 indicated 212 VT / day). Similarly, the values of average energy VT are low. However, a peak was observed, than 32 MJ, the 17/01/2016.
Also in this period an explosion with an energy of 11 MJ was recorded. It took place at 12:53 local time on 15/01/2016.
However, hours before (6:40 local time) an exhalation of 19 MJ of energy was also recorded.
During the last week, there was another explosion of Ubinas volcano, an event that had not occurred since November 5, 2015, when, at 12:15 local time a column of ash 2 km high was generated.
This time, on January 15, the four telemetric seismic stations of the OVS, located on the volcano recorded at 12:53 local time, which was confirmed immediately with images obtained in real time by the camera Campbell Scientific. The ash plume rose to a height of 3 km above the base of the crater being dispersed to the South and Southwest of the massif. OVS, as a member of the Scientific Committee of permanent surveillance, published the respective ash alert for the villages of Querapi, Ubiñas, Tonohaya, San Miguel, Anascapa, Huatagua, Sacohaya. It should be noted that on the same day, within hours of the day earlier, at 6:40 am local time, an exhalation, which reached a maximum height of 500 meters was recorded.
The Mirova system (monitoring of hot spots on the surface of the crater -www.mirovaweb.it) detected in this period two thermal anomaly on the volcano Ubinas, registered on 13 and 15 January with values of 1 and 4 MW respectively .
Abnormalities of SO2:
The GSDM satellite “EOS Aura” system – NASA (monitoring of SO2 gas density: //so2.gsfc.nasa.gov/) did not notice any major abnormalities in SO2 gas density values during this period.
January 26, 2016. Ubinas , Perou :
Source : IGP Perou.
Photos : Ingemment /AFP