Past and future impacts on the landscape and drainage of the

Yorkshire Dales (Part 1)Dr Aidan Foley

CLIMATE CHANGE

Structure

Climate Change – sun/earth interactions over geological time

UK Ice Sheets & Ice Processes Impacts on Surface and Subterranean Drainage Climate Change – the last 10,000 years and

anthropogenic factors Likely impacts on rivers The role of groundwater Likely management issues & restoration

Milankovitch cycles

Milankovitch cont.

Milankovitch, M. (1920) Mathematical Theory of Heat Phenomena Produced by Solar Radiation

On the basis of Milankovitch cycles, no glaciations are predicted for 30,000 yrs.

Climate Change ~ 500 Million years

Veizer et al. (1999); Wikimedia Commons

Climate Change ~ 5 Million Years

Lisiecki and Raymo (2005)

Wikimedia Commons

Climate Change ~ 0.5 million years

Petit et al. 1999; Lisiecki and Raymo (2005); Wikimedia Commons

UK Ice Sheet Extent

Glacial landforms northern UK

Main ice centres, last glaciation

Landscape Evolution

Glacial Processes

Glacial Processes cont.