Sabancaya volcano news & activity updates:
Sabancaya volcano (Peru): continuing earthquakes, degassing
Thu, 4 Apr 2013, 17:3617:36 PM | BY: T
Volcanic earthquakes continue at high rate, and there is increased SO2 degassing, as the surface expression of fresh magma intruding at shallow depth.
IGP report #8 about Sabancaya (2 April 2013)
In an Instituto Geofísico de Perú (IGP) report from 1 April, a photo showed a fumarolic plume rising above Sabancaya on 8 March. During the third week of March, a bluish colored plume rose 500 m above the crater, possibly indicating sulfur dioxide emissions. On 25 March the seismic network detected a continuing high rate of volcano-tectonic (VT) earthquakes and an increasing number of long-period (LP) events. On 27 March and 1 April VT earthquakes continued to be dominant and located below the NE sector of the crater. The number and amplitude of LP events did not change.
(from today's Smithsonian / USGS Weekly Volcanic Activity Report)
Previously, residents of Sallalli, 11 km S of Sabancaya, reported that fumarolic activity had increased on 5 December 2012. Four earthquakes within 15 km of the crater during 22-23 February caused damage in Maca, 20 km NE. In response, the Instituto Geofísico de Perú (IGP) installed seismic stations and recorded hundreds of earthquakes per day.
INGEMMET also installed monitoring equipment, and in partnership with IGP increased monitoring efforts. On 27 February scientists observed that the emissions were mostly water vapor, carbon dioxide, and sulfur dioxide. During 28 February-5 March there were 400-500 earthquakes per day recorded, mostly volcano-tectonic events.
Links / Sources:
Links / Sources:
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
Tue, 26 Feb 2013, 18:14
A strong seismic swarm and increased fumarolic activity triggered an eruption warning for Sabancaya volcano (Arequipa, Peru) and the Civil Defense of the Regional Government of Arequipa raised the alert level to yellow, which involves implementing actions to prepare for a probable volcanic eruption. ... read all