Iceland: something happening under Eyjafjallajökull? 3 March 2010Posted by admin in Eyjafjöll, Iceland.
Tags: Eyjafjallajökull, Eyjafjöll, Iceland
Eyjafjallajökull in southern Iceland is showing distinct signs of restlessness, with intensive seismic activity being recorded over the last 48 hours. The map above comes from the Iceland Meteorological Office page for earthquakes in the Mýrdalsjökull area, and shows the situation at 20:10 GMT this evening. Eyjafjallajökull, which last erupted in the early nineteenth century, is a glaciated stratovolcano adjacent to Katla volcano (with which it may be connected in some way, although chemically the lavas from the two volcanoes are quite different). A flurry of shallow seismic activity since the beginning of this year, and some inflation detected by GPS monitoring, appears to indicate that an intrusion of some kind is under way under Eyjafjallajökull.
[Thanks go to Boris Behncke for the tip about the current activity. I’m also very grateful to a generous and well-informed source in Iceland who has provided quite a lot of detailed information about Eyjafjallajökull which I hope to post tomorrow.]
UPDATE 4 March 2010. Hugh Tuffen of Lancaster University reports (comment below) that the earthquakes are becoming more frequent and shallower. He also observes that if an eruption occurs at Eyjafjallajökull there is a danger of jokulhlaups/lahars. And another UPDATE, Erik Klemetti has a very full post about Eyjafjallajökull over at Eruptions: Increasing signs of activity at Eyjafjallajökull in Iceland.
UPDATE 21 March 2010. It’s erupted: Eyjafjallajökull volcano erupts.
Global Volcanism Program: Eyjafjöll – summary information for Eyjafjallajökull, which the GVP calls Eyjafjöll (1702-02=)