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2023-01-09, M7.6, Indonesia

On the 9th of January 2023 an M7.6 earthquake occurred in the Tanimbar region of Indonesia (see map below). Several aftershocks were also reported after the powerful quake that was also felt in some parts of northern Australia.

Indonesia is positioned at the boundary of 3 tectonic plates (the Indian-Australian, Eurasian and Pacific plates). The plate boundaries are long and found beneath the ocean, meaning large and shallow earthquake can be generated from this zone that may potentially generate tsunami.

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.bmkg.go.id/berita/?p=peta-isoseismal-gempabumi-maluku-tenggara-barat-10-januari-2022&lang=ID&s=detil

https://earthquake.usgs.gov/earthquakes/eventpage/us7000j36j/executive?utm_medium=email&utm_source=ENS&utm_campaign=realtime

https://www.emsc-csem.org/Earthquake/earthquake.php?id=1208699

2022-12-20, M6.4, California

On the 20th of December 2022, an M6.4 earthquake occurred in the United States of America at 10:34:24 UTC approximately 15km WSW of Ferndale, California (see map below). At least two deaths have been recorded and several injuries. The earthquake also caused damage to buildings and interrupted the power and water supply in the area.

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://earthquake.usgs.gov/earthquakes/eventpage/nc73821036/executive

2022-11-21, M5.6, Indonesia

On the 21st of November 2022, an M5.6 earthquake occurred at 06:21:11 UTC approximately 18 km WSW of Ciranjang-hilir, Indonesia, see map below. The event occurred in a densely populated region and resulted in over 200 fatalities and over 1,000 injured people largely due to buildings collapsing.

This is a highly seismically active region, close to the subductive plate boundary between the Australia and Sunda plates. The earthquake occurred within the crust of the Sunda plate approximately 260km northeast of the boundary.

More information is available at the following resources:

https://earthquake.usgs.gov/earthquakes/eventpage/us7000ir9t/executive

https://www.bmkg.go.id/gempabumi/gempabumi-terkini.bmkg?lang=EN

https://www.emsc-csem.org/Earthquake/earthquake.php?id=1191326

2022-08-12, M2.5, Celtic Sea

On the 12th of August 2022 at 00:30 UTC a magnitude M2.5 earthquake occurred in the Celtic Sea, approximately 200km south of Mizen Head, Co Cork. The earthquake located with a depth of 10 km. In the map below the epicentre of the earthquake is indicated with a red marker. Major fault zones in and around Ireland are shown with black lines. 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 most recent earthquake detected in the Celtic Sea was M2.5, occurring on the 13th of July 2022, and the largest earthquake detected (since 1980) in the Celtic Sea was M2.9, occurring on the 27th of May 2019.

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

2022-07-26, M0.3, Offshore Wexford

On the 26th of July 2022 at 23:33 UTC a magnitude M0.3 earthquake occurred offshore Wexford, locating approximately 12km east of Wexford town, at a depth of 3 km. In the map below the epicentre of the earthquake is indicated with a red marker. Major fault zones in and around Ireland are shown with black lines. This is the first Irish earthquake to be located using data from the recently installed underground seismic station at Mitchelstown Caves (IMIC). Earthquakes are regularly detected within county Wexford and the surrounding offshore regions. The largest earthquake detected in this area was M2.4, occurring on the 18th of March 2014 and locating 6km offshore Raven Point, Co. Wexford.

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

2022-07-27, M7.0, Philippines

On July 27, 2022, at 00:43:24 UTC a magnitude 7.0 earthquake occurred in the island of Luzon in the Philippines. The earthquake struck approximately 84 km SSE of the city of Laoag (pop: 102,000) and 15 km NE of San Ramon (pop: 4,000), see map below. EMSC reports the earthquake originated at a depth of 10 kilometers. At the time of writing the earthquake caused at least 2 deaths and dozens of injuries have been reported.

Map showing the Philippines earthquake location.

The tectonics of the region are complex and prone to large earthquakes. Luzon is on the Philippines sea-plate which is bounded to the East and West by subduction zones. According to the USGS the region experiences high seismicity rates and since 1970, 11 other earthquakes of magnitude 6.5 or larger have occurred within 250 km of the July 27, 2022 earthquake. The largest of these earthquakes occurred in 1990 (M7.7) and killed more than 1,600 people.

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

The M7.0 Philippines earthquake as recorded by the INSN seismometers in Ireland.

More information is available at the following resources:

https://earthquake.usgs.gov/earthquakes/eventpage/us6000i5rd/region-info

https://www.emsc-csem.org/Earthquake/earthquake.php?id=1153080

2022-07-25, M0.9, Donegal

On the 25th of July 2022 at 02:35 UTC a magnitude M0.9 earthquake occurred in northern Donegal, locating 12km northeast of Letterkenny, approximately 1 km beneath Lough Swilly. In the map below the epicentre of the earthquake is indicated with a red marker. Major fault zones in and around Ireland are shown with black lines. Earthquakes with magnitudes up to M2.5 are commonly detected in Donegal; the most recent earthquake detected in this region was M0.6 on the 22nd of June. The largest onshore Irish earthquake recorded by the INSN was M2.5, occurring on the 26th of January 2012 on the Fanad Peninsula in Donegal .

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

2022-07-19, M2.1, North Atlantic

On the 19th of July 2022 at 03:06 UTC a magnitude M2.1 earthquake occurred in the North Atlantic, approximately 190km north of Donegal, locating along the edge of the Rockall Trough, 80km east of the Hebrides Terrace Seamount. The earthquake located with a depth of 6 km. In the map below the epicentre of the earthquake is indicated with a red marker. Major fault zones in and around Ireland are shown with black lines. The most recent detected earthquakes in this region were M2.6 and M2.3 respectively, occurring on the 31st of March 2020 at the Hebrides Terrace Seamount. Earthquakes with magnitudes up to M4.0 have been detected in this region regularly since 1980.

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

2022-06-21, M5.9, Afghanistan

On June 21, 2022 at 20:54:36 UTC a magnitude 5.9 earthquake occurred approximately 150km south of Kabul near the border with Pakistan (see map below). EMSC reports the earthquake originated at a depth of 10 kilometers. The earthquake caused widesoread damage with at least 300 fatalities and hundreds of injured. The event was felt widely to distances of 500km from the epicentre, including parts of Pakistan and India. Strong earthquakes in eastern Afghanistan result from the India plate moving northward and colliding with the Eurasia plate causing uplift producing high mountain ranges, including the Hindu Kush and the Himalaya.

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

For more information please see the links below:

https://www.emsc-csem.org/Earthquake/earthquake.php?id=1141004

https://earthquake.usgs.gov/earthquakes/eventpage/us7000hj3u

2022-04-17, M2.5, North Atlantic

On the 17th of April 2022 at 18:48 UTC a magnitude M2.5 earthquake occurred in the North Atlantic, approximately 90km NW of Donegal, locating south of the Rockall Trough. The earthquake located with a depth of 10 km. In the map below the epicentre of the earthquake is indicated with a red marker. Major fault zones in and around Ireland are shown with black lines. The most recent detected earthquake at this location was M0.7, occurring on the 6th of March 2022. Further to the north in the Rockall Trough, earthquakes with magnitudes up to M4.0 have been detected regularly since 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
ITIP - N. Tipperary
IMAY - Mayo