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2020-03-22, M5.4, Zagreb, Croatia

At 05:24:02 (UTC) on the 22nd of March 2020, a M5.4 earthquake struck 7km northeast of Zagreb, Croatia. The earthquake occurred at a depth of 10km and caused several injuries as well as widespread damage to buildings in Zagreb. This event is the largest to occur near Zagreb in the past 140 years.

The earthquake was recorded at seismic stations worldwide, including stations of the Irish National Seismic Network (INSN), see seismic waveforms below (select figure to enlarge).

Further information is available through the links below:

https://www.emsc-csem.org/Earthquake/earthquake.php?id=840695

https://earthquake.usgs.gov/earthquakes/eventpage/us70008dx7/executive

2020-02-23, M5.7, Turkey-Iran Border Region

At 05:53:01 (UTC) a M5.7 earthquake struck 25km south-east of Sarey, Turkey close to the Iranian border. The earthquake had a depth of ~6.4km and initial reports are of several deaths and numerous injuries due to building collapse. A second M6 event occurred at 16:00:31 (20-02-23) in the same area.

 

The middle east and surrounding areas are prone to seismic activity due to the movement of four major tectonic plates (Arabian, Eurasian, Indian and African). This plate interaction produces large-scale tectonic processes such as subduction, transform faulting, compressional mountain building, and crustal extension.

Further information is available at the following sources:

M5.7 event,

https://earthquake.usgs.gov/earthquakes/eventpage/us70007v29/executive

https://www.emsc-csem.org/Earthquake/earthquake.php?id=832418

http://irsc.ut.ac.ir/newsview.php?&eventid=162408&network=earth_ismc__

 

M6 event,

https://earthquake.usgs.gov/earthquakes/eventpage/us70007v9g/executive

https://www.emsc-csem.org/Earthquake/earthquake.php?id=832582

 

 

 

 

2020-02-13, M0.9, Irish Sea

A magnitude M0.9 earthquake occurred on the 13th February 2020 at 19:13:01 GMT in the Irish Sea, about 25km east of Wicklow town. The epicentre location is shown in the map below. The location is in the same area in which a magnitude M2.8 earthquake nucleated on the 14th December 2005, an event that was felt by many people along the East coast of Ireland. Black lines in the map denote major fault zones in and around Ireland.

The event was recorded by the Irish National Seismic Network (INSN) and British Geological Survey (BGS) seismometers, for seismograms see the plot below (click image to enlarge).

2020-02-05, M1.0, Irish Sea

A magnitude M1.0 earthquake occurred on the 5th February 2020 at 17:38:34 GMT in the Irish Sea, about 50km east of Arklow. The epicentre location is shown in the map below, black lines denote major fault zones in and around Ireland.

The event was recorded by the Irish National Seismic Network (INSN) and British Geological Survey (BGS) seismometers, for seismograms see the plot below (click image to enlarge).

2020-01-29, M1.0, Offshore Antrim

On the 29th January 2020 at 07:27:40 GMT a magnitude M1.0 earthquake occurred offshore Co. Antrim, Northern Ireland. The earthquake located close to the epicentres of the M0.9 earthquake, 26th January 2020 and the M1.6 earthquake, 18th of December 2019. In the map below the epicentre of the M1.0 earthquake is indicated with a red marker. Major fault zones in and around Ireland are shown with black lines.

The event was recorded by the Irish National Seismic Network (INSN) and British Geological Survey (BGS) seismometers, for seismograms see the plot below (click image to enlarge).

 

2020-01-28, M7.7, Cuba

At 19:10:25 GMT on January 28th 2020 a magnitude M7.7 earthquake struck near Cuba, about 100km from its southern coast and 125km northwest from Jamaica, see the map below for the event location. The earthquake occurred at a relatively shallow depth of about 10km. It was was widely felt throughout the region, including parts of Honduras and southern Florida. A tsunami warning was initially issued but lifted about 90 minutes later. There a no reports of any building damage.

The earthquake was recorded at seismic stations worldwide, including stations of the Irish National Seismic Network (INSN), see seismic waveforms below (select figure to enlarge).

Further information is available at the following sources:

https://www.emsc-csem.org/Earthquake/earthquake.php?id=824193

https://earthquake.usgs.gov/earthquakes/eventpage/us60007idc/executive

2020-01-24, M6.7, Turkey

At 17:55:14 UTC on January 24th, 2020 a magnitude M6.7 earthquake struck the Kalaba-Sivrice region in Eastern Turkey, see the map below for the approximate location of the event. The earthquake had a depth between 10 and 15 km and resulted in very strong to severe ground shaking. Currently 22 fatalities and hundreds of injuries have been reported with the collapse of several buildings. The earthquake is located on or close to the East Anatolian Fault which separates the Anatolia Block of the Eurasia plate from the Arabia plate. Damaging earthquakes occurr relatively frequently in Turkey. According to the USGS seven other M6 or larger events have occurred over the preceding half century within 250 km of the January 24, 2020 earthquake. For maps showing plate boundaries and locations of past earthquakes in Turkey see https://en.wikipedia.org/wiki/List_of_earthquakes_in_Turkey.

The earthquake was recorded at seismic stations worldwide, including stations of the Irish National Seismic Network (INSN), see seismic waveforms below (select figure to enlarge).

Further information is available at the following sources:

https://www.emsc-csem.org/Earthquake/earthquake.php?id=822667

https://earthquake.usgs.gov/earthquakes/eventpage/us60007ewc/executive

http://www.koeri.boun.edu.tr/new/en

2019-12-20, M1.4, Irish Sea

On the 20th of December 2019 at 09:53:44 local time, a M1.4 earthquake occurred in the Irish Sea approximately 90km north-east of Dublin and 40km south of the Isle of Man. The epicentre location is shown in the map below. This event follows a M2.5 earthquake in the Irish Sea from the 15th of December 2019. The M1.4 earthquake is most likely an aftershock of the recent M2.5 earthquake.

The event was recorded by the Irish National Seismic Network (INSN) and British Geological Survey (BGS) seismometers, and can be seen in the waveforms plotted below:

2019-12-18, M1.6, Offshore Antrim

On the 18th of December 2019 at 20:22:14 UTC, a M1.6 earthquake occurred offshore Co. Antrim, Northern Ireland. The earthquake located approximately 10km east of both Ballycastle and Rathlin Island, and at a depth of 1km. Since 2010, the Irish National Seismic Network (INSN) has previously recorded 5 earthquakes off the Antrim Coast, the largest of which was an M1.6 earthquake occurring on the 26th of October 2013.

The event was recorded by the Irish National Seismic Network (INSN) and British Geological Survey (BGS) seismometers, and can be seen in the waveforms plotted below:

The INSN is operated by the Dublin Institute for Advanced Studies (DIAS) in co-operation with the Geological Survey Ireland (GSI).

2019-12-15, M2.5, Irish Sea

On the 15th of December 2019 at 21:19:52 local time, a M2.5 earthquake occurred in the Irish Sea approximately 90km north-east of Dublin and 40km south of the Isle of Man. The epicentre location is shown in the map below. Events of this nature are not uncommon in the Irish Sea, a similar smaller event occurred on the 17th of November 2019. There has also been a subsequent M1.7 event at 06:23:55 on the 16th December off the English coast North of Blackpool (see map at bottom of page).

Location of M2.5 event on the 15th December 2019.

There have been no reports that the earthquake was felt onshore but the event was recorded by the Irish National Seismic Network (INSN) seismometers, and can be seen in the waveforms plotted below.

The INSN is operated by the Dublin Institute for Advanced Studies (DIAS) in co-operation with the Geological Survey Ireland (GSI).

 

Location of M1.7 Irish Sea event on the 16th December 2019.

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