Aa Aa Aa For large-scale coastal dune development there needs to be a suitable wind regime, large reserves of sand and suitable nearshore, beach and back beach morphology (Pye 1983, Iversen ...
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Earth from space: Wandering sand dunes circle gigantic 'eye' sculpted by ancient city-killer meteor in the SaharaRelated: See all the best images of Earth from space A group of five barchan, or "horned," sand dunes can be seen in a zoomed-in version of the 2013 photo (see below). Over time, these arrowhead ...
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