Study+Units+5_8_coastal+environments.pdf

Study+Units+5_8_coastal+environments.pdf - GGH2604 Study...

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GGH2604 Study units 5 and 8 Human agency in geomorphology The future: Coastal environments
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Reactivation and stabilization of sand dunes Wind is a comparatively feeble (weak) geomorphic agent over much of the earth's surface, but in areas where vegetation is sparse and surface sediments dry out, it can occasionally have significant effects. Where these factors are favorable, Aeolian (wind-formed) landscapes develop. The most striking features of these landscapes are sand dunes. Sand dunes are accumulations of wind deposited particles and can assume a bewildering variety of forms (Summerfield, 1999). The mobility of sands carried by wind enable sand dunes to march over great distance, which can disrupt human activities and destroy agricultural land, settlements and various man-made structures.
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