Two earthquake swarms in Tjörnes Fracture Zone (TFZ)

Over the last few days there has been small earthquake swarm activity in Tjörnes Fracture Zone. The activity has been in two locations, west of Kópasker village and east of Grímsey island (ongoing swarm). Both earthquake swarms are small for now and only few earthquakes larger than magnitude 2,0 have happened. Total number of earthquakes is around 146 for the whole Tjörnes Fracture Zone when this article is written.

Current earthquake activity on the Tjörnes Fracture Zone. Copyright of this image belongs to Icelandic Met Office.

The earthquake swarm east of Grímsey island is not over as it has not yet peaked based on what I am seeing. It is more difficult to know about the earthquake swarm west of Kópasker village. As of writing of this article both earthquake swarms are ongoing.


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