A prehistoric Atlantis in the north sea may have been abandoned after being hit by a 5mt tsunami 8200 years ago

A prehistoric Atlantis in the north sea may have been abandoned after being hit by a 5mt tsunami 8200 years ago

A prehistoric Atlantis in the north sea may have been abandoned after being hit by a 5mt tsunami 8200 years ago

A prehistoric “Atlantis” in the North Sea may have been abandoned 8,200 years ago after being struck by a 5m tsunami. The wave was formed off the coast of Norway by a catastrophic subsea landslide.

The tsunami over-ran Doggerland, a low-lying landmass that has since disappeared under the waves, is suggested by analysis. Around 8,000 years ago,  “It was abandoned by Mesolithic tribes, which is when the Storegga slide happened,” said Dr Jon Hill from Imperial College London. The wave could have wiped out the last people to occupy this island.

A new model by researchers at Imperial College London has revealed the devastating effects of a tsunami caused by a landslide off the Norwegian coast over 8,000 years ago. It’s believed the event would have devastated an area of low-lying land known as Doggerland that once connected Britain to mainland Europe

The report has been submitted to the journal Ocean Modeling and is being presented this week at the Vienna, General Assembly of the European Geosciences Union. To investigate the probable effects of the Norwegian landslide, Dr Hill and his Imperial-based colleagues Gareth Collins, Alexandros Avdis, Stephan Kramer and Matthew Piggott used computer simulations.

He told BBC News: “We were the first ever group to model the Storegga tsunami with Doggerland in place. Previous studies have used the modern bathymetry (ocean depth).” As such, the study gives the most detailed insight yet into the likely impacts of the huge landslip and its associated tsunami wave on this lost landmass.

The landmass once connected Britain with Europe, and is believed to have been inhabited by Mesolithic tribes. Artificats recovered from the North Sea provide evidence as to the land’s habitation. The tsunami is thought to have wiped out the last people to occupy the area, who were by then restricted to an island

During the last Ice Age, sea levels were much lower; at its maximum extent Doggerland connected Britain to mainland Europe. It was possible for human hunters to walk from what is now northern Germany across to East Anglia. But from 20,000 years ago, sea levels began to rise, gradually flooding the vast landscape.

By around 10,000 years ago, the area would still have been one of the richest areas for hunting, fishing and fowling (bird catching) in Europe. A large freshwater basin occupied the centre of Doggerland, fed by the River Thames from the west and by the Rhine in the east. Its lagoons, marshes and mudflats would have been a haven for wildlife.

“In Mesolithic times, this was paradise,” explained Bernhard Weninger, from the University of Cologne in Germany, who was not involved with the present study. But 2,000 years later, Doggerland had become a low-lying, marshy island covering an area about the size of Wales.

Divers from St Andrews University, searching for Doggerland, the underwater country dubbed ‘Britain’s Atlantis’, in 2012. The underwater area is hard to explore as it is a busy sea lane with murky waters

The nets of North Sea fishing boats have pulled up a wealth of prehistoric bones belonging to the animals that once roamed this prehistoric “Garden of Eden”. But the waters have also given up a smaller cache of ancient human remains and artefacts from which scientists have been able to obtain radiocarbon dates.

And they show that none of these relics of Mesolithic habitation on Doggerland occur later than the time of the tsunami. The Storegga slide involved the collapse of some 3,000 cubic km of sediment.

St Andrews University’s artists’ impression of life in Doggerland. Further research will be a need in order to discern just how many people were living on Doggerland, but it’s unlikely many or any survived the deadly tsunami caused by the Storegga Slide

“If you took that sediment and laid it over Scotland, it would cover it to a depth of 8m,” said Dr Hill. Given that the majority of Doggerland was by this time less than 5m in height, it would have experienced widespread flooding.

“It is therefore plausible that the Storegga slide was indeed the cause of the abandonment of Doggerland in the Mesolithic,” the team writes in their Ocean Modelling paper.

Dr Hill told BBC News: “The impact on anyone who was living on Doggerland at the time would have been massive – comparable to the Japanese tsunami of 2011.” But Bernhard Weninger suspects that Doggerland had already been vacated by the time of the Storegga slide.

“There may have been a few people coming with boats to fish, but I doubt it was continuously settled,” he explained. “I think it was so wet by this time that the good days of Doggerland were already gone.”

Prof Vince Gaffney, an archaeologist at the University of Birmingham, said: “I think they (the researchers) are probably right, because the tsunami would have been a catastrophic event.”

But he stressed that the archaeological record was sparse, and explained that two axes from the Neolithic period (after Storegga) had been retrieved from the North Sea’s Brown Banks area.

It is possible these were dropped from a boat – accidentally or as a ritual offering – but it is also unclear precisely when Doggerland finally succumbed to the waves.

“Even after major volcanic eruptions, people go back, sometimes because they can’t afford not to but also because the resources are there,” said Prof Gaffney, who has authored a book, Europe’s Lost World: The Rediscovery of Doggerland.

The tsunami would also have affected what is now Scotland and the eastern coast of England, as well as the northern coast of continental Europe. The wave that hit the north-east coast of Scotland is estimated to have been some 14m high, though it is unclear whether this area was inhabited at the time.

These young Mesolithic women from Teviec, Brittany, were brutally murdered. As sea levels rose competition for resources may have intensified

But waves measuring some 5m in height would have hit the eastern coast of England, and there is good evidence humans were in this area 8,000 years ago.

Much of this region would also have been low-lying, suggesting the impact on Mesolithic people who depended substantially on coastal resources such as shellfish, would have been significant here, too.

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