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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 (Iceland): earthquake swarm as result of possible magma intrusion

Tuesday Oct 01, 2013 16:06 PM | BY: T

Location of recent quakes at the TFZ
Location of recent quakes at the TFZ
Depth vs time of earthquakes at the TFZ
Depth vs time of earthquakes at the TFZ
An intense earthquake swarm has been going on offshore North Iceland, 10 km NW of Gjögurtá, since 25 September. This morning, 2 earthquakes reaching magnitude 3 and 3.2 occurred at 06:14 and 07:41. In total, more than 1000 quakes have been recorded by IMO.
The depths of the quakes vary from about 15 km depth (crust-mantle boundary) to near surface. The area is located on an active fault line related to rifting, and a possible cause of the earthquake swarm could be a magmatic intrusion.
Previous news
Location of recent quakes at the TFZ
Friday, Aug 02, 2013
A (probably tectonic) swarm of earthquakes has been occurring since yesterday in the eastern part of the TFZ, about 10-15 km north of the shore at various depths mostly below 15 km. It includes more than 100 quakes yesterday including 6 above magnitude 3 (up to 3.8 yesterday morning). [more]
Monday, Apr 08, 2013
The seismic swarm continues with a decreasing trend. "Only" 65 earthquakes have been counted so far today, the largest being a 3.3 event 14 km NE of Grímsey this morning. [more]
Earthquakes in the TFZ during the past 48 hours (Icelandic Met Office)
Sunday, Apr 07, 2013
The powerful earthquake swarm that started a week ago continues, but at reduced intensity compared to 2 April when the large magnitude 5.4 quake struck. Each day, hundreds of earthquakes have been occurring (more than 200 > magnitude 2 during the past 2 days). ... [more]
Depth vs time of quakes under the Tjörnes Fracture Zone
Tuesday, Apr 02, 2013
A strong earthquake swarm including a widely felt magnitude 5.4 earthquake at 15 km depth this morning and hundreds of pre- and aftershocks is occurring in the Tjörnes Fracture Zone in a N-S elongated area about 15 km east of the island of Grimsey. [more]
Recent earthquakes in Iceland (note the red dots of the swam in the TFZ north off Iceland)
Friday, Mar 01, 2013
An earthquake swarm is in progress east of Grímsey Island. So far, the largest quakes are below magnitude 3. [more]
 

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