Copahue volcano news & activity updates
Saturday, May 25, 2013
Friday, May 24, 2013
...more [read all]
Sunday, May 12, 2013
SERNAGEOMIN has recently raised the alert back to yellow after new small explosions occurred at the volcano and incandescence was observed at the summit crater. A small but persistent steam-and-ash plume has been rising about 350 m from the volcano. Interestingly, little change in the seismic activity has been noticed with the incandescence and explosions, so it is not clear whether this new activity is caused by fresh magma rising towards the surface.
Saturday, Apr 20, 2013
Volcanic unrest has been declared over and the volcanic alert level was lowered back to green, as well as the hazard level for the community of Alto Biobio.
Friday, Apr 12, 2013
A pilot reported the emission of steam, gas and minor amounts of volcanic ash from the volcano today (VAAC Buenos Aires). SERNAGEOMIN has not reported unusual activity and maintains alert level yellow.
Tuesday, Apr 02, 2013
Based on analysis of satellite imagery and a pilot observation, the Buenos Aires VAAC reported that on 28 March steam-and-gas emissions with small amounts of ash rose from Copahue.
Tuesday, Feb 19, 2013
The volcano continued to show a gradually decreasing trend of internal activity, is the conclusion of the latest bulletin SERNAGEOMIN published. ...more
Tuesday, Feb 05, 2013
Seismic activity dropped drastically yesterday, with only one volcanic tectonic quake and low-energy continuous tremor registered. A white steam and gas plume with no ash rises about 1500 m above the volcano. Sernageomin lowered the status of the volcano to yellow.
Monday, Feb 04, 2013
Activity has increased again. Sernageomin reported 92 seismic events during 2-3 Jan and the occurrence of a seismic swarm on the evening of 2 Jan. A degassing plume was observed rising up to 1350 m, whose intensity was without apparent correlation to seismicity.
Saturday, Feb 02, 2013
Seismic activity has decreased and no new surface activity observed. During the past 24 hours since last night, SERNAGEOMIN only detected one tiny volcanic earthquake.
Thursday, Jan 31, 2013
SERNAGEOMIN reported a decrease in seismic activity. No new surface activity was noted, but the alert level remains at orange.
Wednesday, Jan 30, 2013
Monday, Jan 28, 2013
Saturday, Jan 26, 2013
Friday, Jan 25, 2013
Intense internal (seismic) unrest continues. Sernageomin reported 25 volcano-tectonic and 106 long period events as well as episodes of tremor during 19 hours between 22-23 Jan. An explosion signal was recorded at 23:55 local time (22 Jan) that corresponded to a brief increase of the height of the gas plume to 1500 m above the crater. ...more
Wednesday, Jan 23, 2013
Seismic activity increased significantly during 22 Jan, SERNAGEEOMIN reported in two special bulletins. No eruptive activity at the surface has occurred so far, and the official alert level of the volcano remains at "Yellow", but with "Special Attention" (corresponding to "orange" in our classification). ...more [read all]
Wednesday, Jan 16, 2013
No surface activity and no glow has been observed, but there is elevated seismic activity of low energy with more than 1700 events detected between 15-16 Jan. ...more
Thursday, Jan 10, 2013
The volcano produces a dense column of steam and gas rising up to about 1 km. During nighttime there is slight glow visible. More than 1200 earthquakes were recorded during 10 Jan.
Wednesday, Jan 09, 2013
SERNAGEOMIN reports a strong increase in seismicity during 8 Dec, when more than 1100 events were recorded with little change in surface activity (so far!).
Tuesday, Jan 08, 2013
Copahue volcano (Chile/Argentina border) activity update: seismic swarms, strong degassing, occasional glow from crater
SERNAGEOMIN reported 3 seismic swarms and volcanic tremor on 6 Jan, accompanied by increased crater glow and elevated degassing.
Sunday, Jan 06, 2013
Chilean scientist think that new eruptions from the volcano could occur any time. SERNAGEOMIN's latest bulletin informs that the seismicity under Copahue has shown a significant change since 31 December. A number of quakes both related to fracturing of rocks and fluid movements appeared at shallow depths of 4 km and have been becoming shallower. Also, a change in the plume towards becoming denser and grayer, i.e. more ash-rich, has been noted in recent days. For this reason, the alert level was raised back to orange.
Thursday, Jan 03, 2013
A steam and gas plume rises from the volcano, but no further explosions were recorded. SERNAGEOMIN keeps the alert level at yellow.
Wednesday, Jan 02, 2013
Sunday, Dec 30, 2012
Friday, Dec 28, 2012
Wednesday, Dec 26, 2012
SERNAGEOMIN lowered the alert level of Copahue to orange. Seismicity has remained low and only a few weak emissions were recorded yesterday. ...more
Sunday, Dec 23, 2012
Copahue volcano raised to red alert - more explosions and incandescence evidence presence of fresh magma
At 21:43 local time Saturday, a strong harmonic tremor signal occurred with the same dominant frequency 1.36 Hz and an intermediate intensity (2x stronger than the one during earlier records). Immediately after this episode that lasted about 5 minutes there were 2 explosions with loud noises heard. ...more [read all]
Terra/MODIS image of the Copahue eruption, taken at 14:45 UT on December 22, 2012 (NASA earth observatory)
Saturday, Dec 22, 2012
According to SERNAGEOMIN, the eruption is most likely a small phreatic event. This is a abbreviated translation of the latest press release: ...more [read all]
...more [read all]
Friday, Sep 28, 2012
Intense steaming can be observed from the El Agrio crater lake as the following recent video shows: ...more