The seismic activity is concentrated only 10 km from Keflavík International Airport.
Seismicity along the magma intrusion continues. Since midnight, 14 November, over 700 earthquakes have been located along the orientation of the magma intrusion, the largest of which was M 3.1 near to Hagafell.
The seismic activity is concentrated on the region of the intrusion, between Sundhnúkur and Grindavík at a depth of about 2–5 km, only 10 km from Keflavík International Airport.
Keflavík Airport, also known as Reykjavík–Keflavík Airport, is the largest airport in Iceland and the country’s main hub for international transportation. The airport is 1.7 nautical miles west of Keflavík and 50 km southwest of Reykjavík.
Decreasing rates of ground deformation are seen in GPS data from Grindavík. Satellite radar results show a graben-like formation that cuts through part of Grindavík. This feature was first identified by IMO in satellite radar imagery early on 12 November.
The imagery shows up to 1-m of vertical ground displacement in the western part of Grindavík, caused by the propagation of the magma intrusion. From geodetical modelling results, we infer that (as of 12 November) the greatest area of magma upwelling is sourced close to Sundhnúkur, 3.5 km north-northeast of Grindavík.
All monitoring systems are being monitored closely in real-time, especially near Grindavík, for any indications of sudden change.
