The differentiations of calculating lacunarity indices of shifting sand dunes which have same area but different distribution forms are obvious.

详尽地分析了流动沙丘面积相同，分布形式不同而产生的间隙度指数差异。

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These patterned stripes are part of Erg Chech, a desolate sand sea in southwestern Algeria, Africa, where the prevailing winds create an endlessly shifting collage of large, linear sand dunes.

这些规则状的条纹属于舍什沙漠的一部分，位于非洲阿尔及利亚西南部荒凉的沙海，不断吹拂的大风创造出无数漂移不定、呈线性的沙丘。

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Research on the processes of wind erosion of cropland, desertification of grassland, reactivation of fixed dunes and shifting sand movement reveals th...

并论述了农田风蚀、草场沙化、固定沙丘活化及流沙前移等主要类型土地沙漠化的发育过程。

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Stony ridges gave way to tumbled boulders, slopes of sifted gravel, and then sand, blown into shifting dunes.

NEWYORKER: The Martian Chroniclers

Movement in the Alvord is so slight as to be almost imperceptible--sand dunes on its eastern side are shifting.

FORBES: A Desert Where?