News
Significant ground deformation detected associated with recent earthquakes
Last week a series of earthquakes occurred on the Reykjanes Peninsula, between Fagradalsfjall and Kleifarvatn - the largest of which was a magnitude 5.6 earthquake in the vicinity of Núpshíðarháls, which occurred at 13:43 on 20th October. The maps displayed here show ground deformation associated with movement on faults during the period 16th-22nd October.
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M5.6 at the Reykjanes peninsula
Seismic
activity has decreased significantly in recent days. About 180 earthquakes of
magnitude 2.2 or less were detected the last two days, for comparison, during
the first 24 hours following the 5.6 earthquake in Núpshlíðarháls, about 1700
earthquakes were detected in the area.
The Aviation Color Code for Grímsvötn changed from green to yellow
The Icelandic Met Office has changed the aviation color code for Grímsvötn volcano from green to yellow. Volcanic activity at Grímsvötn has been gradually increasing over time as indicated by several regularly monitored geophysical and geochemical parameters that are now above the known background level.
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Update on the activity in the Reykjanes peninsula
Since the intense seismic swarm started in Fagradalsfjall on the 18th of July, the activity has been slowly decreasing over time. The acquisition of recent satellite images enabled mapping of new surface deformation in the area associated with the sequence of large earthquakes which occurred between the 18th and 20th of July. The satellite data processing clearly shows a deformation signal corresponding to approximately 3 centimeters of movement along a NE-SW oriented fault in the region of Fagradalsfjall.
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