Copahue volcano news & activity updates
Copahue volcano (Chile): increasing earthquake activity
Sonntag Mai 26, 2013 09:55 | VON: T
Although degassing and ash emissions have decreased, seismic activity at the volcano has picked up, SERNAGEOMIN reported. An average of 356 earthquakes per hour, sometimes merging into what looks as volcanic tremor, has been recorded recently. This could be related to intruding magma from a new batch of magma rising at the moment and as a result, phreatomagmatic or magmatic activity could occur at the surface in the near future.
The hazards from the volcano to populated areas are only significant in the case of a larger eruption creating a large ash plume, possible pyroclastic flows and lahars capable of travelling greater distances. Ash fall in particular would mainly threaten the areas to the east (ie. the Argentine side) because of the prevailing westerly wind directions.
Samstag, Mai 25, 2013
A steam and ash plume is rising about 1-1.5 km from the crater where it is emitted by 3 vents. Two of these emit only gas and steam. The third one erupts some ash as well, Chilean scientists found out during an helicopter overflight. ... [mehr]
Freitag, Mai 24, 2013
SERNAGEOMIN has raised the alert level to orange. Since May 15, a progressive increase in seismic activity as well emissions of gas and now some ash have been observed. ... [mehr]
Sonntag, Mai 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. [mehr]
Samstag, 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. [mehr]