Sabancaya volcano news & activity updates:
Sabancaya volcano (Peru): seismic unrest and ground deformation
Tue, 14 May 2013, 15:1715:17 PM | BY: T
Ground deformation (deflation) at Sabancaya volcano measured by InSAR (IGP)
Location of recent earthquakes (IGP)
The possible ash emissions on 9 May have not been confirmed, but unrest in the form of increased earthquake activity and ground deformation has increased since early May, the Geophysical Institute of Peru (IGP) reported in its press release on 10 May.
Seismic activity during the past weeks (IGP)
So-called "hybrid" earthquakes (related to both the fracturing of rock and fluid movements) have increased since 2 May, while purely volcanic-tectonic quakes have remained stable.
Satellite-born InSAR radar measurements showed that the area of the current seismicity (north-east of the volcano, just above the village of Hornillo), has shown subsidence of about 7 cm, which is possibly related to magma draining from there into different reservoirs.
Links / Sources:
Links / Sources:
Sun, 12 May 2013, 16:35
Possible eruptions have started at the volcano. Pilots reported several volcanic ash plumes from the volcano in the past days although VAAC Buenos Aires could not identify ash on satellite imagery. ... read all
Sun, 7 Apr 2013, 06:43
Seismic activity has decreased at the volcano, the latest press release of IGP shows. It seems less likely now that the volcano will produce an eruption soon,- as in many cases, an intrusion has happened at depth without (so far) breaching the surface (= erupting). ... read all
Thu, 4 Apr 2013, 17:36
Volcanic earthquakes continue at high rate, and there is increased SO2 degassing, as the surface expression of fresh magma intruding at shallow depth. ... read all
Fri, 15 Mar 2013, 17:42
Peru's Geological Mining and Metallurgical Institute INGEMMET and the Geophysical Institute of the National University of San Agustin Arequipa IGUNSA informed in a press release about the recently increased volcanic activity of Sabancaya: ... read all
Thu, 14 Mar 2013, 23:09
A 4.7 magnitude earthquake occurred near the volcano (35 km to the east) this morning, another indication that some unrest, probably caused by an intrusion of magma from depth, continues to affect this volcano. ... read all