During the night of 7-September-2017 strong earthquake swarm happened in Bárðarbunga volcano. Largest earthquake had the magnitude of 4,5 and the second largest earthquake had the magnitude of 4,1. Other earthquakes where smaller in magnitude. This is the strongest earthquake in Bárðarbunga volcano since August-2017.
This earthquake swarm was in north-east part of the Bárðarbunga volcano caldera. This area of the volcano has been earthquake active since August-2014 when current period of activity started. This time around no harmonic tremor was detected. That might not always be the case since it is my view that there is a risk of small short lived eruptions now in Bárðarbunga volcano with connected glacier floods. This time around it just didn’t happen.
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