During the night of 26-March-2017 there was an strong earthquake swarm about 80 km north of Kolbeinsey Island. This is around 250 km from the coast in north Iceland. It is not clear what is happening in this location, since this area has been seeing higher than usual earthquake activity in recent months. This is the largest earthquake swarm so far to take place.
The earthquake swarm as it appears on Icelandic Met Office maps. Green stars are earthquakes with magnitude above 3,0. Copyright of this image belongs to Icelandic Met Office.
Largest earthquakes in this swarm had the following magnitudes. Magnitude 4,6 (EMSC Information here), magnitude 5,0 (EMSC information here), magnitude 4,8 (EMSC information here). The largest earthquakes where not felt due to distance from the coast. It is not possible due to distance to see if there is an eruption taking place at this location. All harmonic tremor get lost due to distance from nearest SIL station. A really large eruption might slightly appear on tremor plot on Icelandic Met Office website, at the moment that has not happened.
The magnitude 5,0 earthquake as it appeared on my geophone in Böðvarshólar. This image is under Creative Commons Licence, please see CC licence for more details.
The magnitude 5,0 earthquake as it appeared on my geophone in Heklubyggð. This image is under Creative Commons Licence, please see CC licence for more details.
It is difficult to know if an earthquake activity is continuing in this area or not. Since the distance from nearest SIL stations does not allow for micro-earthquakes to be detected properly or at all.
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