During thaws, sand movement by wind occurs by warm-season processes:
exposed dry sand will move if wind speeds exceed threshold levels.
The amount of moisture present from melting snow and ice restricts
sand movement from many dune surfaces.
After thaws, sand movement
by wind occurs by cold-season processes: exposed sand moves if it
is released from frozen ground by sublimation or impact. Increased
water in the frozen ground (from meltwater during the thaw) strengthens
the cementation of frozen sand and slows down the rate of sand grain
release by sublimation.