Deep valleys buried under the seafloor of the North Sea record how the ancient ice sheets that used to cover the UK and Europe expelled water to stop themselves from collapsing. A new study greatly surprised the research team, who discovered that the valleys took just hundreds of years to form as
The deep valleys transported vast amounts of meltwater away from under the ice sheets that covered the UK and Europe. Credit: James Kirkham / BAS
A new study greatly surprised the research team, who discovered that the valleys took just hundreds of years to form as they transported vast amounts of meltwater away from under the ice and out into the sea. This new understanding of when the vast ice sheets melted 20,000 years ago has implications for how glaciers may respond to climate warming today.
According to the findings, this process is quick by geological timescales, with the melting ice forming giant tunnel valleys within hundreds of years, expelling water that could otherwise accelerate rates of ice loss. What is certain, is that the surprisingly fast rate at which these tunnels form means that scientists need to start considering their effects in models of how today’s ice sheets will evolve in the coming decades to centuries.
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