Sabancaya volcano news & activity updates:
Sabancaya volcano (Peru): strong seismic swarm
Fri, 19 Jul 2013, 01:1901:19 AM | BY: T
Recent earthquakes near Sabancaya volcano
A strong seismic swarm has occurred during the past days under the volcano, culminating in a magnitude 5.9 earthquake on 16 July. The swarm consisted almost entirely of volcanic-tectonic quakes, that relate to rock fracturing due to rapid pressure changes and might be caused by an intrusion of magma. IGP reports that up to 1500 earthquakes were recorded per day.
Seismic recording from late on 18 July (SAB station, IGP)
At the moment, the swarm still continues, but is decreasing. No changes of activity have been noticed at the surface. The number of long-period quakes (thought to correspond to internal movements of magma, gasses and other fluids) has remained low.
Tue, 11 Jun 2013, 11:33
Seismic unrest continues. Earthquake numbers have shown a light increase since May, the latest report of IGP from 5 June shows. read all
Mon, 27 May 2013, 06:03
The volcano has remained quiet, but is still showing signs of unrest. IGP scientists found evidence of eruptive activity (no fresh lava or pyroclastic deposits) inside the crater of of the volcano during a helicopter survey on 21 May. Only steaming and degassing were observed from the crater, that measures about 300-350 m in diameter and is 200 m deep. read all
Thu, 16 May 2013, 09:07
Seismic activity has calmed down a bit compared to the previous weeks. ... read all
Tue, 14 May 2013, 15:17
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. ... read all