Tjörnes Fracture Zone volcano (North of Iceland) activity update: seismic swarms
Friday Sep 21, 2012 14:05 PM | BY: T
It included hundreds of small to medium quakes up to magnitudes around 4, the largest being a 4.2 event at 19:42 UTC on 20 Sep. This earthquake swarm was most likely felt in the towns of Siglufjöður, Dalvík town and nearby places.
The depth of the earthquake swarm ranged from 2-17 km and took place in an area without known active volcanoes, but which is subject to tectonic spreading at a rate of 50mm/year.
For more information, visit the Iceland Volcanoes and Earthquakes Blog.