deflation flat

deflation flat
   (colloquial: US Gulf Coast)
   A series of low ridges and troughs on an essentially flat surface on barrier islands formed by dune field migration during alternating wet and dry periods; a type of interdune.
   Troughs are eroded down to the wet sand level during drought periods (dune slack), while the ridges are stabilized by vegetation that invades the edge of dune fields during wet periods.
   Compare: blowout, deflation basin.

Glossary of landform and geologic terms. 2013.

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