Today (4-April-2014) has been marked by an large earthquake swarm in Hengill volcano. For the moment this earthquake swarm is man made. This earthquake swarm is due the fact that Orkuveita Reykjavíkur is pumping down large amount of water (full of led and other hazardous things) back into the ground. This creates pressure change in the crust and that starts an earthquake swarm in the area. It is possible to monitor this earthquake swarm here on my webicorder website.
Activity has been so high in this area today that it has been creating ghost earthquakes on the earthquake map of Iceland.
This earthquake swarm in Hengill volcano is going to continue for as long as they continue to pump down water into the crust in this location. As for the magnitude of the earthquakes that appear during this time is difficult to say. Largest earthquake so far had the magnitude of 2,9, it is also possible that larger earthquakes might take place in this location or nearby location if stress changes due to this activity take place. I don’t know if that is going to happen, but it is worth monitoring for such changes just in case anything happens.
Blog post updated at 20:54 UTC.
Blog post updated at 20:57 UTC.