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2024-07-22, M2.0, Rockall Trough

At 22:24:11 UTC on the 22nd of July 2024 an M2.0 earthquake occurred in the Rockall Trough, in the North Atlantic ocean (see green circle on map below). The event occurred at a depth of about 29km. The earthquake locates approximately 360km northwest of Donegal, at the western edge of the Rockall Trough. The earthquake epicentre locates in an area where the bathymetry (the depth of the seafloor underwater) changes from about 2000m in the Rockall Trough to 200m at the Rockall Bank. Earthquakes are regularly detected in this region, of which the largest was magnitude M4.0, occurring in April 1980.

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

2024-07-11, M1.1, Malin Sea

At 17:59:33 UTC on the 11th of July 2024 an M1.1 earthquake occurred in the Malin Sea in the North Atlantic ocean (see green circle on map below). The event occurred at a depth of 1km. The earthquake locates approximately 5km north of the Giant’s Causeway, Co Antrim, Northern Ireland, and about 13km west of Rathlin Island. Small earthquakes are regularly detected in this region, of which the largest was magnitude M1.7, occurring in December 1998.

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

2024-05-16, M1.5, Rockall Trough

At 23:39:33 UTC on the 16th of May 2024 an M1.5 earthquake occurred in the Rockall Trough, in the North Atlantic ocean (see green circle on map below). The event occurred at a depth of about 14km. The earthquake locates approximately 150km northwest of Donegal, and about 35km south of the Hebrides Terrace Seamount. Earthquakes are regularly detected in this region, of which the largest was magnitude M4.0, occurring in April 1980.

The event was recorded and located by the Irish National Seismic Network (INSN) and can be seen in the waveforms plotted below. Station ‘DGL2’ in western Donegal commenced operation on 18th April 2024, and has already recorded several local earthquakes.

2024-04-21, M5.3, Iceland

On April 21st, 2024, at 06:37:22 UTC, an earthquake measuring M5.3 struck central Iceland, at a depth of 10 km (refer to the map below for the location). The earthquake occurred near the Bárðarbunga stratovolcano, about 200km east of the capital Reykjavik. This was the largest earthquake to occur in this region of Iceland since 2015. Overall seismic activity at the volcano has been increasing since February 2024, and this earthquake could mark the beginning of a new phase of unrest at the volcano. The previous eruption of the Bárðarbunga volcano began in August 2014 and ended in February 2015.

The event was recorded by seismic stations operated by DIAS in the Irish National Seismic Network (INSN), see figure below.

For additional information, visit the following links:

https://www.emsc-csem.org/Earthquake_information/earthquake.php?id=1649429

https://earthquake.usgs.gov/earthquakes/eventpage/us7000mdlk

2024-03-14, M5.4, Montenegro

On the 14th of March 2024 at 03:06:47 UTC, a M5.4 earthquake occurred in Montenegro, near the border with Bosnia-Herzegovina, at a depth of 7 km (see map below). Dozens of aftershocks have occurred in the hours since, with magnitudes ranging up to M3.4. No casualties have been reported at the time of writing. The earthquake located approximately 80 km northwest of the capital Podgorica, which in 1979 experienced a M6.9 earthquake that caused widespread damage and hundreds of casualties.

The event was recorded by seismic stations operated by DIAS in the Irish National Seismic Network (INSN), see figure below.

2024-01-22, M7.0, Western China

On the 22nd of January 2024 at 18:09:05 UTC, a M7.0 earthquake occurred in the western Chinese province of Xinjiang, near the borders with Kyrgyzstan and Kazakhstan, at a depth of 9 km (see map below). A series of aftershocks up to magnitude M5.5 have also occurred. As many as 50 buildings have collapsed as a result of the earthquake, with dozens of injuries reported in the city of Almaty, Kazakhstan. No fatalities have been reported at the time of writing.

Large magnitude earthquakes (greater than M6.0) occur regularly in China, of which the largest in modern history occurred the central Chinese province of Sichaun in May 2008, causing 90,000 fatalities and several hundred thousand injuries.

The event was recorded by seismic stations operated by DIAS in the Irish National Seismic Network (INSN), see figure below.

2023-12-10, M1.3, Donegal

At 06:48:00 UTC on the 10th of December 2023 an M1.3 earthquake occurred on the Fanad peninsula in northern Co. Donegal, Ireland. The earthquake occurred at a depth of approximately 5 km, and the epicentre was approximately 5 km east of Kerrykeel (see map below). The Irish National Seismic Network (INSN) operated by DIAS has received several reports that the earthquake was experienced by members of the public near Kerrykeel, whereby most stated that they heard a loud, thunder-like noise. The Fanad peninsula experiences regular seismic activity; the most recent earthquake to occur near Kerrykeel was M1.4 in August 2017, and the largest earthquake on the Fanad peninsula was M2.4 in January 2012.

The map below shows the location of felt reports from the public.

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

2023-06-16, M5.7, France

On the 16th of June at 16:38:29 UTC (18:38:29 Local time), a M5.7 earthquake occurred in western France, at a depth of 14km (see map below; the red circle denotes the earthquake epicentre). The earthquake occurred approximately 20km east of the city of La Rochelle, situated along the western coast of France. At the time of writing, no fatalities had been reported, however the earthquake caused damage to several hundred buildings in the region. Although earthquakes are frequently recorded within France and its surrounding offshore regions, earthquakes of magnitude M5.0 or greater do not occur very often. The previous M5 event recorded in France occurred on the 20th of March 2019, approximately 60km north of Bordeaux in western France.

The event was recorded by seismic stations operated by DIAS in the Irish National Seismic Network (INSN), see figure below.

2023-05-10, M2.4, Goban Spur, North Atlantic

On the 10th of May 2023 at 16:21:53 UTC, a magnitude M2.4 earthquake occurred near the Goban Spur, in the Porcupine region of the North Atlantic ocean, locating approximately 350km south-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. Several earthquakes of similar magnitudes (between M2.0 and M4.4) have been detected in this region since 1980. Previously, the most recent earthquake detected from this area occurred on 2022-03-10 (M3.4, in the Porcupine Abyssal Plain), 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:

2023-03-21, M6.5, Afghanistan

On the 21st of March 2023 a M6.5 earthquake occurred in the Hindu Kush region of Afghanistan (see map below). The earthquake occurred at 16:47:24 UTC (21:17:24 local time) an occurred at a depth of 193 km. At least 13 people died (at the time of writing), with reports of damaged buildings and landslides in northern Afghanistan and Pakistan as a result of the earthquake. Seismicity in this region is largely due to the continental collision of the India and Eurasia plates, with several major earthquakes (>M7) occurring regularly.

The event was recorded by seismic stations worldwide, including stations in the Irish National Seismic Network (INSN), see figure below.

More information is available at the following resources:

https://www.emsc-csem.org/Earthquake/earthquake.php?id=1240146

https://earthquake.usgs.gov/earthquakes/eventpage/us7000jln7/executive

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