Tjörnes Fracture Zone volcanosubmarine volcano unknown summit elevationNorth of Iceland, 66.3°N / -17.1°W Tjörnes Fracture Zone volcano eruptions: 1868 Typical eruption style: unspecified Tjörnes Fracture Zone webcams / live data Last earthquakes nearby Tjörnes Fracture Zone (north of Iceland) experiences strong earthquake swarm with magnitude 5.2 quakeSunday Oct 21, 2012 14:05 PM | BY: T
A strong seismic swarm started shortly before midnight GMT in the Tjörnes Fracture Zone (TFZ) north of Iceland. During the first 12 hours, about 300 quakes greater than magnitude 1 occurred at various depths ranging between 1 and 13 km, including 47 greater than magnitude 3. The largest was a widely felt M5.2 event in 10,8 km depth. Most quakes are located between the north coast of Iceland and the small island of Grimsey. A submarine volcano is known from a location north of Grimsey that erupted in 1372. A weaker swarm yesterday around noon preceded the current one. Earthquakes, mostly of tectonic origin, are frequent in the TFZ, but since it is also near the volcanic rift zone, a magmatic component cannot be ruled out. At present, the nature of the quakes (purely seismic or magma intrusion) is not known.
Previous news
Friday, Oct 05, 2012
A new small swarm of earthquakes started east of Grímsey Island in the Tjörnes Fracture Zone (TFZ) north of Iceland yesterday 4 Oct. So far, there have been 41 quakes during the past 48 hours, mostly of small magnitudes (1-2) at various depths mostly around 10 km. The largest quakes was a magnitude 3.1 event at 11:35 UTC. ...
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Monday, Oct 01, 2012
A small earthquake swarm took place at the Tjornes Fracture Zone in the past 48 Hours. Only 1 tremor was larger than magnitude 3. ...
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Friday, Sep 21, 2012
The seismic swarm at the Tjörnes Fracture Zone has been calming down. ...
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