Continuing quakes as the tectonic plates splitting Iceland move

Sun, 28 Feb 2021, 03:11

03:11 AM | BY: EARTHQUAKEMONITOR

Map of Iceland showing movements and deformation. (source: IMO)

The recent 4.7 earthquake which occurred 29 km southwest of Reykjavic, Iceland, was only one of the quakes which exceeded a magnitude 4.0. According to the Icelandic Meteorological Office (IMO) the ongoing earthquake swarm in Iceland produced the largest quake they have felt at magnitude 5.7, last 24 Feb. 2021. Since that quake they have recorded 20+ quakes above magnitude 4.0, and 100+ quakes above magnitude 3.0. A total of over 7200 quakes were recorded since the start of the swarm last 19 Feb. 2021.
The satellite image above from Sentinel-1 interferogram spanning the period of 19-25 Feb. 2021, shows tectonic plate movements between the North American- and the Eurasian Plates. Red amplitudes represent movement towards the satellite and purple amplitudes movement away from the satellite. The arrow lines show this movement direction. The red star shows the location of the magnitude 5.7 quake last 24 Feb.

The IMO stated that these seismic activities are part of the ongoing volcano-tectonic reactivation of the Rekjanes Peninsula. Although none had been observed yet, they are on the constant look out for any shallow magmatic intrusions or inflow of magma from depth.

Details about this quake

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Earthquake data:

I felt this quake

Date & time: 28 Feb 2021 12:19 am (GMT +0) local time (28 Feb 2021 00:19 GMT)
Magnitude: 4.7
Depth: 5.3 km
Epicenter latitude / longitude: 63.92°N / 22.23°W

(Reykjavik, Capital Region, Iceland)
Primary data source: IMO

Details about this quake

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