The Mudcat Café TM
Thread #168780   Message #4076638
Posted By: GUEST,henryp
24-Oct-20 - 05:57 AM
Thread Name: Folklore: city that sank into the sea
Subject: RE: Folklore: city that sank into the sea
The east coast of Scotland was struck by a 21 m (70 ft) high tsunami around 6100 BC, during the Mesolithic period. The wave was caused by the massive underwater Storegga slide off Norway. The tsunami even washed over some of the Shetland Islands. Tsunamite (the deposits left by a tsunami) dating from this event can be found at various locations around the coastal areas of Scotland, and are also a tourist feature in the Montrose Basin, where there is a layer of deposited sand about 0.6 metres (2 ft) thick.

At the time, what became the east coast of England was connected to the areas of Denmark and the Netherlands by a low-lying land bridge, now known to archaeologists as Doggerland. The area is believed to have had a coastline of lagoons, marshes, mudflats, and beaches, and may have been the richest hunting, fowling and fishing ground in Europe at the time. Much of this land would have been inundated by the tsunami, with a catastrophic impact on the local human population.

The coast of Cornwall was hit by a 3 m (10 ft) high tsunami on 1 November 1755, at around 14:00. The waves were caused by the Lisbon earthquake. The tsunami took almost four hours to reach the UK. The tsunami was also observed along the south coast of England and on the River Thames in London. Contemporary reports say that there were three of these tsunami waves, and that the sea receded very quickly, then rose up. At St Michael's Mount, the sea rose suddenly and then retired; ten minutes later, it rose 6 feet (1.8 m) very rapidly, then ebbed equally rapidly. The sea rose 8 feet (2.4 m) in Penzance and 10 feet (3.0 m) at Newlyn; the same effect was reported at St Ives and Hayle.

Although there is no record of the overall death toll, the 19th-century French writer Arnold Boscowitz claimed that "great loss of life and property occurred upon the coasts of Cornwall". The tsunami also reached Galway in Ireland, at a height of 2 m (6.6 ft), and caused some serious damage to the "Spanish Arch" section of the city wall. (Wikipedia)