Seismic activity remains above background and is mainly associated to internal rock fracturing processes. During the first week of the new year, the number of earthquakes increased slightly, with a magnitude 3.7 quake at 12:22 local time on 5 Jan.
Internal (seismic) activity remains low, but above background and the volcano's status is unchanged at yellow.
Low-level seismic unrest continues with no significant changes to report over the past months.
Seismic activity remains slightly elevated, with no significant changes over the past months, and INGEOMINAS keeps alert level yellow.
INGEOMINAS - Popayan volcano observatory reports no significant changes. Occasional small earthquakes continue to show the volcano is at unrest.
Weak seismic unrest continued over the past weeks. The alert level remains at yellow.
The only sign of acivtity over the past week were 4 small volcano-tectonic quakes.
Seismic activity remains barely above background. During the past week, INGEOMINAS reported a total of 13 mostly weak-energy events.
Fri, 11 Jan 2013, 10:45
Seismic activity remains slightly elevated, but there have not been any signs of surface activity.
Read allWed, 7 Nov 2012, 08:50
There were a total of 14 seismic events associated with rock fracturing processes, of which 12 were characterized by low energy level. The 2 remaining ones were of higher energy level located 20 km northeast of the volcano, at a depth of 10 km, with a maximum magnitude of 1.3 ML on the Richter scale.
Read allWed, 24 Oct 2012, 08:48
Seismic signal on 17 Oct (SOSO station, INGEOMINAS)
Seismic activity remains elevated. A swarm on 17 Oct contained over 700 small quakes.
Read allWed, 17 Oct 2012, 10:05
There were a total of 100 seismic events, of which 86 were characterized by low energy level. The 14 remaining of higher energy were located mainly in an area between 1 and 2 km north of the volcano, at depths between 2 and 6 km, with local magnitudes between .1 and .8 degrees on the Richter scale.
Fri, 12 Oct 2012, 10:05
Weak unrest continues. 28 seismic events, 23 of them associated with rock fracturing and 5 to fluid dynamics in volcanic conduits were recorded over the past week, mostly being of low energy.
Read allWed, 3 Oct 2012, 09:39
There were a total of 23 seismic events associated with fracturing of rock, of which 16 were characterized by low energy level. The remaining, of higher energy level, were located mainly in a zone between 2 and 7 km north of the volcano, at depths between 4 and 9 km with local magnitudes between .4 and 1.2 on the Richter scale.
Read allWed, 26 Sep 2012, 09:10
Current SOSO seismogram from station (INGEOMINAS)
There were a total of 36 seismic events associated with fracturing of rock, of which 29 were characterized by low energy level. The remaining, higher energy level, were located mainly in an area between 1 and 2 km north of the volcano, at depths between 1 and 6 km and with local magnitudes around 0.1 degrees on the Richter scale.
Read allWed, 19 Sep 2012, 10:05
Seismic signal this morning (SOSO station, INGEOMINAS)
Small earthquakes at shallow depth, 25 in total during the past 7 days, continued to occur at 1-6 km depth in an area 1-2 km N of the summit.
Thu, 13 Sep 2012, 10:05
Seismic signal fromSotará late on 12 Sep (SOSO station, INGEOMINAS)
Swarms of small quakes and longer tremor pulses appear on the seismic recordings and seem elevated compared to the recent days.
Wed, 12 Sep 2012, 10:05
Current seismogram from Sotará (SOSO station, INGEOMINAS)
Seismic unrest continues at Sotará. In the week between 5-11 Sep there were in total 82 events, INGEOMINAS reports. This includes about 50 small quakes of magnitudes between 0.1-1.6 at shallow depths of 1-6 km in an area 1-2 km north of the summit.
Tue, 11 Sep 2012, 10:05
Small seismic swarm yesterday (SOSO station, INGEOMINAS)
Seismicity is up and down at Sotará volcano with periods of increased activity and small quake swarms of several hours alternating with quiet intervals.
Wed, 5 Sep 2012, 10:05
Weak seismic unrest continues. A number of quakes between magnitudes .1-1 were recorded 1-2 km north of the summit in an area at 4-5 km depth. Weak inflation of the NE sector of the volcano continues to be visible.
Wed, 29 Aug 2012, 10:05
Current seismic signal (SOSO station) from Sotará (INGEOMINAS)
A total of 71 volcanic quakes were recorded over the past week. Most were very week, but 6 had magnitudes between 0.1 and 1.3 and were located 1-2 km N of the summit at depths between 2-3 km. A possible inflation of the NE sector of the volcano is being detected on tilt meters.
Wed, 22 Aug 2012, 10:05
Current seismogram from Sotará (SOSO station, INGEOMINAS)
Seismicity has been on the increase at the volcano. Over the past 7 days, INGEOMINAS registered 151 volcano-tectonic quakes, out of which 15 were of significant size (magnitudes 0-1) and located at shallow depth between 2 and 6 km in an area 0.1-5 km NE from the the summit. Visual observations show no signs of surface activity.
Wed, 15 Aug 2012, 06:00
According to INGEOMINAS, the Observatorio Vulcanológico and Sismológico de Popayán reported that during 8-14 August seismic activity at Sotará increased. The seismic network recorded 110 magnitude 0.2-1.6 events mainly located in an area 0.1-5 km NE of the peak, at depths of 2-6 km. Inflation was detected in the NE area, coincident with the zone of increased seismicity.
Read allTue, 14 Aug 2012, 10:05
Seismic signal fromSotará late on 13 Aug (SOSO station, INGEOMINAS)
Seismicity visible at Sotará overall decreased during the past week, but showed a strong increase yesterday and then again subsided today.
Thu, 9 Aug 2012, 06:46
Location of the larrger recent earthquakes under Sotarà
The recent increase in seismic activity under Sotarà volcano promted INGEOMINAS to raise the alert level from yellow (unrest) to orange (eruption warning) yesterday afternoon.
Read allTue, 31 Jul 2012, 07:39
Seismic recording from Sotara (29 July) (INGEOMINAS)
Volcanic unrest has been detected recently at Sotara volcano. An increased number of small volcanic earthquakes is visible on seismic recordings.