Scientists speculate that it could relate to geothermal production in the area.
It’s the biggest swarm to hit the Tjörnes Fracture zone in almost half a century, and experts are unsure what is causing it – or when it will end.
“It is very difficult to say [when the swarm will end],” said Kristín Jónsdóttir, Earthquakes Hazards Officer for the Icelandic Meteorological Office (IMO). “The behavior is episodic, we record hundreds of earthquakes in a few hours and then it becomes quiet and all of a sudden it starts again. The last swarm in 2012 was ongoing for a few weeks. Let’s hope we only have a few weeks to go.”
Jónsdóttir had previously told Icelandic National Broadcasting Service RÚV that the cause of the current earthquake swarm was not known, but that they were “trying to figure out what’s going on.” She said it could relate to geothermal production in the area.
I posted about this back on June 30, when the earthquake count stood at about 9,000.
Thanks to Laurel for this link