Fluvial processes part two

910 views
641 views

Published on

Fluvial Processes in TVC

0 Comments
2 Likes
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
910
On SlideShare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
33
Comments
0
Likes
2
Embeds 0
No embeds

No notes for slide

Fluvial processes part two

  1. 1. Fluvial Processes II A revision of Fluvial Processes, Landforms and Characteristics
  2. 2. Fluvial Processes• Rivers are driven by Gravity and the water cycle• They have elements, processes and create landforms as outputs.
  3. 3. Fluvial Processes• Rivers Erode• Rivers Transport• Rivers Deposit
  4. 4. The Elements of the Process• The Elements of fluvial Processes are• Gravity• Water• Sediment• Topography
  5. 5. The Outputs of the Process• The outputs of the processes are landforms such as deltas, V-shaped valleys, islands and oxbow lakes.
  6. 6. How Rivers erode• When a river is flowing fast it has a lot of energy to erode the bed and banks of its channel.• This occurs in the upper portions of the river.
  7. 7. How Rivers transport• Rivers transport larger material where they have the most energy.• Large sediment (rocks) require a lot of energy to be moved. Small sediment (ash) requires little energy to be moved.
  8. 8. How Rivers Transport• Sediment is moved…• In Suspension (dissolved)• By Saltating (bouncing)• By Traction (rolling)
  9. 9. How Rivers Transport• Rivers mainly transport in the mid section of the river
  10. 10. At the base the river is wide and slow
  11. 11. How Rivers Deposit• Rivers deposit their load (sediment) when they lose energy.• Where rivers flow slowly they drop their sediment.
  12. 12. Where Rivers Deposit• Rivers flow slowly at their mouth in the lower section of the river.• Rivers flow slowly on the inside of bends.
  13. 13. Characteristics of the River• Text Upper course Narrow channel, fast flowing Mid Course Medium channel, medium speed Lower Course Wide Channel, Slow Velocity
  14. 14. Processes on the River• Text Erosion Dominates Transport Dominates Deposition Dominates
  15. 15. Erosion and DepositionFast = Erosion Slow = Deposition
  16. 16. Why the Channel Moves• Text Channel moves this way Outside of Bend = Fast flow Inside of Bend and Erosion = Slow Flow And Deposition
  17. 17. Rivers at the mouth are wide• Text
  18. 18. Rivers at the source are narrow and fast
  19. 19. • Text
  20. 20. • Text
  21. 21. • Text
  22. 22. • Text
  23. 23. • Text
  24. 24. • Text
  25. 25. • Text
  26. 26. • Text

×