1. Deserts

2. Less than 10 inches of precipitation per year Is San Diego considered to be in a desert area?

3. San Diego Average Rainfall

4. San Diego Rainfall 1850-2005

5. Deserts of the World

7. Low Latitude Deserts

8. Low Latitude Deserts 30 degrees above and below equator

9. Mid Latitude Deserts and Rainshadows

10. Irregular, Large, Thunderstorms

11. Flashfloods in Desert Wash

12. Terms

13. Coalescing Alluvial Fans

16. Deflation and Blowouts

18. Deflation

19. Desert Pavement

21. Formation of Sand Dunes

22. Sand Dune Slip Face

23. Navajo Sandstone Paleo Sand Dunes Largest Crossbeds

24. Sand Dune Types

25. Barchan Limited sand and flat with little vegetation

26. Barchan Dune Features

27. Barchan Dunes

29. Transverse Steady wind lots of sand little vegetation Largest in size

30. Transverse Dunes

32. Longitudinal Moderate sand with variable wind

33. Longitudinal Dunes

34. Star Dunes Variable wind direction

35. Star Dunes

36. Badwater Fan Death Valley

37. Black Mtns, Death Valley

38. Southern Death Valley, California Panamint Range along top Black Mountains bottom of photo Badwater Fan is furthest left fan along the Black Mountains. Furnace Creek fan farthest right along the Black Mountains.

39. Barchan Dune Tibet

40. Sand Dunes-Mars