Seismic swarm at Iceland's Katla

Well, Jon Frimann has been noticing this for the past week or so, but the increased seismicity at Iceland's Katla has finally begun to show up in the mainstream media.CBS had a report from the Associated Press about the seismicity at the Icelandic volcano, noting the uptick in small earthquakes under the volcano. You can see the swarm on the Icelandic Met Office (or see my image below from the IMO website). It is interesting to note that unlike some swarms at Katla over the last year, this one is not at the edges over the caldera, but rather a linear array across the caldera and all at depths between 1-8 km. Now, [SPECULATION] might suggest that a dike is being emplaced under the caldera, rather than just structural earthquakes along the caldera walls [/SPECULATION], how Pall Einarsson from the University of Iceland says there are no signs as of ...