Discharges downstream losing water to infiltration

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discharges downstream, losing water to infiltration and evapotranspiration while intermittent tributaries seldom add discharge. 7. wind erosion is more prominent than in humid environments and rainfall events are rare, running water is still generally the dominant agent of erosion in semiarid areas and in most desert areas. 8. Alluvial fans are small and localized at the mouths of individual canyons; playas dot the relatively flat valley floors. 9. Because the interior drainage never reaches the sea. 10. 11. seldom travels more than a meter above the surface, 12. In humid areas moisture binds particles together and vegetation anchors the soil. 13. Blowouts (depressions excavated by wind erosion) will not be deepened below the water table or below a resistant stratum or bedrock surface. Vegetation also inhibits deflation but sea level (base level for most streams) is not important. 14. The wind is just strong enough to move the sand grains which were sorted by size by the wind. Heavier grains were left in place where as smaller grains were carried away. 15. A. These are parabolic dunes; other tipped dunes have tips that point downwind. B. transverse dunes. C. Parabolic. D.Barchans. E. longitudinal dunes.F. This is a star dune. G. This is a good description of barchanoid dunes. 16. a loosely compacted yellowish-gray deposit of windblown sediment of which extensive deposits occur,
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  • Spring '13
  • NguyenVanVuong
  • Precipitation, barchanoid dunes, B. transverse dunes

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