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Tjörnes Fracture Zone volcano
submarine volcano unknown summit elevation
North of Iceland, 66.3°N / -17.1°W
Current status: dormant (1 out of 5)
Tjörnes Fracture Zone volcano books
Tjörnes Fracture Zone volcano eruptions:
1868
Typical eruption style:
unspecified
Last earthquakes nearby
Latest satellite images
 

Tjörnes Fracture Zone - news & activity updates

Tjörnes Fracture Zone (north of Iceland) experiences strong earthquake swarm with magnitude 5.2 quake

Sunday Oct 21, 2012 12:05 PM | BY: T

Location of quakes in the TFZ (Iceland Met Office)
Location of quakes in the TFZ (Iceland Met Office)
Time and magnitude of quakes in the TFZ (Iceland Met Office)
Time and magnitude of quakes in the TFZ (Iceland Met Office)
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
Location of recent quakes (5 Oct 2012) in the TFZ
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. ... [more]
The swarm at the Tjornes Fracture Zone
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. ... [more]
Earthquakes in the TFZ on 20 Sep (Icelandic Meto Office)
Friday, Sep 21, 2012
The seismic swarm at the Tjörnes Fracture Zone has been calming down. ... [more]
 

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