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More info behind the (M 4.7) Iceland earthquake
Vulkane.net wrote more about the Icelandic earthquake under the Reykjanes peninsula, as follow. Notice that it has been downgraded from M 5.4 to 4.7, while in this article from M 5.0 down to M 4.7, other media reported originally M 5.5
Earthquake M 4.7 on Iceland under Reykjanes
31 July 2022 by Marc Szeglat
Tonight there was an earthquake M 5.0 under the Icelandic Reykjanes Peninsula.
The hypocentre was located at a depth of only 300 m. The epicentre was located 3.1 km south of the Keilir volcano. The data are still very fresh and could still be corrected. Some media reports state that the magnitude was 5.5. If the low drift is correct, then cracks could have formed on the surface. Damage to infrastructure is also possible. The earthquake was clearly felt in the wider area.
The earthquake occurred in the course of the strong earthquake swarm that originated in the north of the Fagradalsfjall volcano and has since spread to the neighbouring fault systems. A magma intrusion is probably taking place under Fagradalsfjall. This changes the stress field of the region and faults are activated. In total, more than 2200 quakes were detected by 20:00.
Update: Crazy, even while I was writing the lines above, the data was corrected. The magnitude is now 4.7. The earthquake focus is at a depth of 1.1 km. The epicentre was 5.2 km west of Straumsvík, a town on the north coast of Reykjane. In addition, other green stars appeared at different locations. Two are in central Iceland, another star is near Katla. The quake there brought it to M 4.4. Possibly the automatic system is overstrained. I will keep you informed about the developments.
END OF ARTICLE
Edit:
The below chart is from an earlier article, before the M 4.7 quake - illustrating the onset of a swarm earthquake in the aforementioned area in SW Iceland during the past 24 hours, where over night 1460 earthquakes took place.
Vulkane.net wrote more about the Icelandic earthquake under the Reykjanes peninsula, as follow. Notice that it has been downgraded from M 5.4 to 4.7, while in this article from M 5.0 down to M 4.7, other media reported originally M 5.5
Erdbeben M 4,7 auf Island unter Reykjanes - Vulkane Net Newsblog
Heute Abend gab es unter der isländischen Reykjanes Halbinsel ein Erdbeben M 5,0. Das Hypozentrum lag in nur 300 m Tiefe.
www.vulkane.net
Earthquake M 4.7 on Iceland under Reykjanes
31 July 2022 by Marc Szeglat
Tonight there was an earthquake M 5.0 under the Icelandic Reykjanes Peninsula.
The hypocentre was located at a depth of only 300 m. The epicentre was located 3.1 km south of the Keilir volcano. The data are still very fresh and could still be corrected. Some media reports state that the magnitude was 5.5. If the low drift is correct, then cracks could have formed on the surface. Damage to infrastructure is also possible. The earthquake was clearly felt in the wider area.
The earthquake occurred in the course of the strong earthquake swarm that originated in the north of the Fagradalsfjall volcano and has since spread to the neighbouring fault systems. A magma intrusion is probably taking place under Fagradalsfjall. This changes the stress field of the region and faults are activated. In total, more than 2200 quakes were detected by 20:00.
Update: Crazy, even while I was writing the lines above, the data was corrected. The magnitude is now 4.7. The earthquake focus is at a depth of 1.1 km. The epicentre was 5.2 km west of Straumsvík, a town on the north coast of Reykjane. In addition, other green stars appeared at different locations. Two are in central Iceland, another star is near Katla. The quake there brought it to M 4.4. Possibly the automatic system is overstrained. I will keep you informed about the developments.
END OF ARTICLE
Edit:
The below chart is from an earlier article, before the M 4.7 quake - illustrating the onset of a swarm earthquake in the aforementioned area in SW Iceland during the past 24 hours, where over night 1460 earthquakes took place.
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