Earthquake activity in Bárðarbunga volcano

Yesterday (12-May-2021) at 15:47 UTC an earthquake with magnitude of Mw3,5. This earthquake was in the normal area of Bárðarbunga volcano caldera. This earthquake activity is connected to inflation of Bárðarbunga volcano that started after the end of Holuhraun eruption in 2015.

Green star in Bárðarbunga volcano caldera and few red dots east of Bárðarbunga volcano showing new deep dyke activity taking place. Image is from 13:20 today (13-May-2021).
Earthquake activity in Bárðarbunga volcano. Copyright of this image belongs to Icelandic Met Office.

There has been a slow drop in earthquake activity during the last few months and it is unclear why that is. Eruptions in Bárðarbunga volcano can be as short apart in time as 18 years or less. The 1996 eruption in Gjálp fissure was from Bárðarbunga volcano, that places the time between eruptions 1996 and 2014 at 18 years.