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2022-03-10, M3.4, North Atlantic

On the 10th of March 2022 at 10:57 UTC a magnitude M3.4 earthquake occurred in the Porcupine Abyssal Plain in the North Atlantic. The earthquake located with a depth of 15 km and is indicated by the red circle in the map below. While earthquakes are known to occur in this region, it is not often that they are detected. As almost all seismometers are land-based, only larger magnitude events (M > 2) are seen from this region. The previous two earthquakes from this area were detected in 2020 and 2015 (M2.5 and M2.4), and the largest earthquake detected (since 1980) in the Porcupine region was M4.4, occurring on the 17th of February 1980.

The event was recorded by the Irish National Seismic Network (INSN) and can be seen in the waveforms plotted below:

2020-11-26, M2.5, Porcupine Abyssal Plain, North Atlantic

On the 26th of November 2020 at 04:29:59 UTC, a magnitude M2.5 earthquake occurred in the Porcupine Abyssal Plain, locating approximately 460km west-south-west off the coast of Kerry. The earthquake occurred at a depth of 10 km. The location of the epicentre is indicated with a red circle in the map below. While earthquakes are known to occur in this region, it is not often that they are detected. As almost all seismometers are land-based, only larger magnitude events (M > 2) are seen from this region. The previous two earthquakes from this area were detected in 2015 (M2.4 and M2.3), and the largest earthquake detected (since 1980) in the Porcupine region was M4.4, occurring on the 17th of February 1980.

The event was recorded by the Irish National Seismic Network (INSN) and can be seen in the waveforms plotted below:

Past Seismograms
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Live Seismograms
All stations here
Filtered versions here
DSB - Dublin
VAL - Kerry

Past Spectrograms
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Live Spectrograms
All stations here
IWEX - Wexford
IDGL - Donegal