The latest satellite image of the area of interest, acquired on 31 October, announced the ground displacement by 5-6 cm over the past 12 days. The movements were located northwest of Mt. Þorbjörn.
The same displacement continues to be detected by GPS measurements at stations in the north area. The IMO scientists estimate a magma intrusion at about 4 km depth based on a combination of seismic, geodetic, and satellite-based observations.
On the Reykjanes Peninsula, more than 10,500 earthquakes have been recorded so far with 26 quakes exceeding magnitude M 3. The strongest event so far has been monitored, with magnitude M 4.5 on 25 October at 08:18 local time.
The swarm is related to a response of magma movements beneath the surface at shallow levels.
Currently, there are no suggestions that magma beneath the surface becomes shallower.
Volcanologists expect the seismic activity to continue northwest of Mt. Þorbjörn.
Source: Icelandic Meteorological Office volcano activity update 2 November 2023