I was looking at the Killpecker Dunes on some website and said that they are the largest "active dune field" in north america. Are there "inactive" dune fields?
2007-12-25 02:43:57 · 2 answers · asked by yay_boxes 4 in Science & Mathematics ➔ Earth Sciences & Geology
Sand can collect and form dunes in places where the dunes do not change shape, size or location, for example behind a beach or at the mouth of a river where sand is deposited durnig flooding and blown away when dry. The shape is determined by the landscape. Active dunes are normally in open desert areas where the shape of one dune affects the wind and that changes the shape of the next dune, like ocean waves.
2007-12-27 03:04:06 · answer #1 · answered by Mike1942f 7 · 0⤊ 0⤋
Active likely means that the dunes are still migrating and being replenished. A lot of places the dune fields have stabilized from the growth of vegetation, and thus are no longer "active" in that sense.
2007-12-25 06:25:19 · answer #2 · answered by busterwasmycat 7 · 1⤊ 0⤋