Since yesterday (27-April-2015) at least there has been earthquake swarm taking place in Tjörnes Fracture Zone (TFZ). This earthquake swarm had a peak in activity during the night. Total of 64 earthquakes have been recorded so far, it is unclear of this earthquake swarm is over at this moment.
The earthquake swarm in TFZ. Copyright of this image belongs to Icelandic Met Office.
Largest earthquakes in this swarm had the magnitude of 2,8 and 2,9. Depth of the earthquakes in this swarm was around 13 km. This does look like a tectonic activity and there is nothing suggesting this is a earthquake swarm of volcanic origin. Earthquake activity in this part of Iceland is common.
Article updated at 13:58 UTC.
Article updated at 16:12 UTC.
Article updated at 16:15 UTC.
Hi Jon,
Still seems alot of EQ’s going on…is this normal activity?
I’d say that over the time I’ve been watching the IMO seismicity pages (about 3 years), the map is unusually well-populated with dots at the moment, and of those, the ones at BB are more unusual over the 3 years than the others. On the other hand, the time that’s elapsed since the last M3+ seems longer than usual.
But others who know more will be able to correct me…