Table 2 Periods of time on which BB tremor emerge in swarms and volcanic activity observed in the crater (Additional files 3, 4)
From: Long-duration seismicity and their relation to Copahue volcano unrest
Start date | Duration [days] | Nro. episodes | Surficial activity |
|---|---|---|---|
2012 Dec 18 | 9 | 8 | Strombolian eruption of VEI 2 |
2013 Aug 27 | 14 | 8 | – |
2013 Oct 13 | 40 | 20 | Ash emissions, explosions, no lake |
2014 Sep 27 | 45 | 28 | Ash emissions, explosions, no lake |
2015 Sep 28 | 75 | 57 | Ash emissions, explosions, no lake |
2016 Sep 03 | 4 | 3 | Ash emissions, no lake |
2018 Aug 25 | 96 | 40 | Ash emissions, no lake |
2019 Sep 11 | 75 | 53 | Ash emissions, explosions |