Overview of Earthquake activity

Earthquake activity throughout the country is described in a weekly summary that is written by a Natural Hazard Specialist. The weekly summary is published on the web every Tuesday. It covers the activity of the previous week in all seismic areas and volcanic systems in the country. If earthquake swarms are ongoing or significant events such as larger earthquakes have occurred during the week, they are specifically discussed. 

Weekly overview

Weekly Overview, 3 - 9. April, 2023

Around 450 earthquakes were detected last week by IMO‘s SIL seismic network, a little more than last week but comparable to the week before that. The largest earthquakes this week were a a part of a minor earthquake swarm about 70 km north of Siglufjörður that took place from 4.-6. April and were 3 events measured larger than magnitude 3, the largest measuring M3.5 on 5. April. Another M3.5 was measured this week 200 km SW of Jan Mayen.

Earthquake activity this week was quite evenly scattered along the generally seismically active regions, but the most prominent activity this week, besides north of Siglufjörður, was an earthquake swarm that started on April 5th just west of Mt. Herðubreið counting around 100 events. Other mentionable activity was the continuation of the swarm by Högnhöfði just north of Úthlíð in South Iceland that started last week. One earthquake was detected in Hekla this week.

More information on earthquake activity in Iceland can be found in Skjálfta-Lísa

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