1. Desert Landscapes

3. Deserts Dry regions cover 30 percent of Earth’s land surface
Distribution and causes of dry lands
Two climatic types are commonly recognized
Desert or arid
Steppe or semiarid

4. Arid and Semiarid Regions
Figure

5. Rainshadow Desert
Figure 4.21

6. Wind Processes and Desert Landscapes
The Work of Wind  
Overview of Desert Landscapes  

7. The Work of Wind Eolian Erosion Eolian Transportation
Eolian Depositional Landforms  
Loess Deposits  

8. The Work of Wind
Figure 12.1

9. Desert Pavement
Figure 12.2

10. Yardang
Figure 12.3

11. Dust Over the Red Sea
Figure 12.4

12. Sand Transport
Figure 12.5

13. Sand Transport
Figure 12.5

14. Sand Ripples
Figure 12.7

15. Dune Cross Section
Figure 12.9

16. Major Dune Forms
Figure

17. Sand Dunes in the Western United States

18. Sandy Regions of the World
Figure

19. Loess Regions of the World
Figure

20. Loess Deposits
Figure

21. Overview of Desert Landscapes
Desert Climates  
Desert Fluvial Processes  
Desert Landscapes  
Desertification

22. Death Valley

23. Alluvial Fan
Figure

24. Differential Weathering
Figure

25. Cross Bedding
Figure

26. Deserts Role of water in arid climates
Most streambeds are dry most of the time
Desert streams are said to be ephemeral
Carry water only during periods of rainfall
Different names are used for desert streams in various region
Wash and arroyo (western United States)
Wadi (Arabia and North Africa)

27. Deserts Role of water in arid climates Ephemeral streams
Different names are used for desert streams in various regions
Donga (South America)
Nullah (India)
Desert rainfall
Rain often occurs as heavy showers

28. Deserts Role of water in arid climates Desert rainfall
Because desert vegetative cover is sparse, runoff is largely unhindered and flash floods are common
Poorly integrated drainage systems and streams lack an extensive system of tributaries
Most of the erosion work in a desert is done by running water

29. A Dry Channel Contains Water Only Following Heavy Rain
Figure 4.22

30. Basin and Range
Figure

31. Colorado River Basin
Figure 1

33. Inselbergs in So California