Earthquake swarm in Kleifarvatn lake in Krýsuvík-Trölladyngja volcano

Yesterday (04-May-2022) an earthquake swarm started in Kleifarvatn lake that is in Krýsuvík-Trölladyngja volcano. Largest earthquake had a magnitude of Mw3,4 but earthquakes down to magnitude Mw2,9 where felt in Reykjavík.

Green star in Kleifarvatn lake on Reykjanes pensinsula. This is in Krýsuvík-Trölladyngja volcano
Earthquake activity in Krýsuvík-Trölladyngja volcano. Copyright of this image belongs to Icelandic Met Office.

It is difficult to be exactly sure what is going on. However, most signs suggest that this earthquake swarm that is ongoing is because if magma movement or magma trying to push upwards in the crust at this location. Earthquake activity is showing a small amount of fluctuation and I don’t know why that is happening. Eruption in this area is likely, it is however impossible to know when that might happen.


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