wind slab

wind slab

[′wind ‚slab]
(hydrology)
A type of snow crust; a patch of hard-packed snow, which is packed as it is deposited in favored spots by the wind, in contrast to wind crust.
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But while trying to reach the peak they realised they were standing on a wind slab - a tough layer of snow resting on a softer and more precarious surface.
Mr Blyth Wright, SAIS co-ordinator, said his team had said on Monday that there would be a substantial risk of avalanches in the Category Three class, with the report for the Lochaber area warning climbers that strong southerly winds had deposited fresh wind slab in sheltered locations.
The rock was shattered loose and the snow dangerous wind slab.