1. Class 25: Hydrology

2. Class updates:  Reading: Section 11.1-11.5 Today’s topics:  Water on Earth  Water transport  Water and geology Class 25: Hydrology

3. Water where?

4. Hydrologic (aka water) cycle

5. Evaporation & transpiration

6. Condensation

7. Precipitation

8. Transport to ocean

9. Slow Transport

10. Fast transport: River Drainage Basin

11. Drainage basin II

12. River runoff

13. Erosion & Base Level

14. River Valley Development

15. River Erosion (denundation) Challenge question: Why so high in N India? Think of sediment source

16. Velocity Profile Flow velocity in channel depends on friction:  friction @ bottom and sides  friction due to boulders, gravel, vegetation  water flows fastest @: - middle of the channel - near the surface

17. River Types - braiding

18. River Types - meanders

19. Meanders II

20. Sediment Transport

21. Floods I

22. Floods II

23. Features: Stream Patterns Regular Guided by cracksGuided by layers Guided by elevationGuided by depressions

24. Features: Alluvial Fans

25. Features: River Terraces

26. Features: River Deltas