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Rivers: Forms and Processes Dr. Chris Parker

Rivers: Forms and Processes Dr. Chris Parker Fluvial Geomorphologist / Senior Lecturer in Physical Geography Department of Geography and Environmental Management University of the West of England. Rivers move!!!. Why do we care if rivers move?.

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Rivers: Forms and Processes Dr. Chris Parker

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  1. Rivers: Forms and Processes Dr. Chris Parker Fluvial Geomorphologist / Senior Lecturer in Physical Geography Department of Geography and Environmental Management University of the West of England

  2. Rivers move!!!

  3. Why do we care if rivers move?

  4. Why it is important to understand how and why rivers move: Flood Risk

  5. Why it is important to understand how and why rivers move: Flood Risk

  6. Why it is important to understand how and why rivers move: Flood Risk Lane et al, 2007

  7. Why it is important to understand how and why rivers move: Flood Risk +12.2% 1 in 0.5 year flood: 2002 climate 1 in 0.5 year flood: 2050 climate Lane et al, 2007

  8. Why it is important to understand how and why rivers move: Flood Risk Lane et al, 2007

  9. Why it is important to understand how and why rivers move: Flood Risk +5.7% 1 in 0.5 year flood: 2002 channel 1 in 0.5 year flood: 2004 channel Lane et al, 2007

  10. Why it is important to understand how and why rivers move: Flood Risk

  11. Why it is important to understand how and why rivers move: Flood Risk

  12. Why it is important to understand how and why rivers move: Navigation

  13. Why it is important to understand how and why rivers move: Damage to infrastructure

  14. Why it is important to understand how and why rivers move: Damage to ecology

  15. Why it is important to understand how and why rivers move: Damage to ecology

  16. Why do rivers move?

  17. What do rivers transport apart from water?

  18. Why do rivers move?

  19. How do rivers move?

  20. How do rivers move? • Sediment available to be transported > Capacity to transport sediment... • Channel size shrinks • Channel becomes straighter (and therefore steeper)

  21. How do rivers move?

  22. How do rivers move?

  23. How do rivers move? • Capacity to transport sediment > • Sediment available to be transported... • Channel size expands • Channel becomes more sinuous (and therefore less steep)

  24. How do rivers move?

  25. How will rivers move in the future?

  26. How will rivers move in the future?

  27. How will rivers move in the future? Cellular Catchment Model

  28. How will rivers move in the future? Cellular Catchment Model (CAESAR) Coulthard et al

  29. How will rivers move in the future? Average rainfall percent increase from baseline for the River Eden catchment, Cumbria Average modelled sediment percent increase from baseline for the River Eden catchment, Cumbria Coulthard et al

  30. How will rivers move in the future? Modelled morphological change in the River Eden, Carlisle resulting from 90% increase in sediment yield Predicted increase in flood inundation resulting from predicted morphological change Coulthard et al

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