Ice Age link to quakes in Irish Sea

Published Sunday, 25 August 2013
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Two earthquakes recorded in the Irish Sea were most likely caused by stress on glaciers from the Ice Age being released, experts have said.

Ice Age link to quakes in Irish Sea
The quake was recorded in the Irish Sea (© Getty)

The first quake recorded was of 2.4 magnitude and measured around 1 mile deep at 5.37am on Sunday.

The second happened at 9.58am and was 4 miles deep and higher on the Richter Scale measuring 3.2 in magnitude.

Both were recorded 15 miles off the Lancashire coast near Fleetwood, which is 106 miles from Belfast and 114 miles from Dublin.

The Irish National Seismic Network (INSN) suggested it was down to a process known as glacial rebound.

People as far away as Dublin, Wexford, Wicklow and Kildare claimed they felt the tremors.

The INSN, which monitors seismic activity in the region, says the larger quake was the strongest quake recorded in Britain or Ireland since 29 May 2013 when a magnitude 3.8 earthquake struck off the coast of the Llyn Peninsula in North Wales.

INSN Director Tom Blake explained: "Although Britain and Ireland are far from any plate boundaries, much of the region is still experiencing quakes due to the removal of the weight of ice sheets that once covered the land.

"Occasionally this post-glacial isostatic rebound - the phenomenon of the land surface gradually returning to its pre-glacial contours - results in earthquakes of this magnitude, particularly in the northern half of the islands."

Further tremors are possible during the coming days but most are expected to be too small to feel.

EXTERNAL LINKS / CONTACTS
An earthquake measuring 4.0 in magnitude struck 37 miles off the Co Mayo coast in Ireland in June 2012.
© UTV News
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4 Comments
jarlath mc gregor in lurgan wrote (331 days ago):
This, may well be the case,but I have just been reading the Iceland news on line,and there has been Volcanic Activity below the glacier over the last few days and also on the 22nd and 23rd of this month,so AIRLINES BEWARE....
Newtownabbey in Newtownabbey wrote (332 days ago):
I didnt know there was fracking taking place in the irish sea! These envirometalists are going to send us back to the ice age!
Stephan in Falls road wrote (332 days ago):
Im shaking in my crocs
Wise Up in Frack town wrote (332 days ago):
HAHAHAHA... A joke!! post-glacial isostatic rebound indeed!! Any other reason than fracking or mans interference in nature.
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