Friday, July 20, 2007
Today has seen yet further incidents of flash flooding and associated chaos in the UK, including a landslide at the side of a motorway. BBC News report here: http://news.bbc.co.uk/1/hi/uk/6907316.stm BBC video clip here: http://tinyurl.com/2u33qq
A study by Sanjeev Gupta and Jenny Collier of Imperial College has revealed a deep, sub-marine trench through the English Channel which is believed to have been carved out by cataclysmic floods 400,000 years ago. The sub-marine scouring, identified on sonar images, is thought to have occurred due to overflow of a massive ice-dammed lake in the southern North Sea. It is estimated that the discharge was between 200,000 and 1 million cubic metres per second - this is at least four times as much as peak flow from the 1996 Icelandic jokulhlaup. Prior to this event Britain was connected to the European mainland via a land promontory.