Munificent
发表于 2025-3-30 11:09:14
Winds and Atmospheresace. But few have atmospheres to blow these grains around to make dunes. Entire libraries exist on the subject of meteorology; here, we can only highlight the principal characteristics of these atmospheres and their winds. For further reading, the text on desert meteorology by Warner (2004) is recom
上釉彩
发表于 2025-3-30 12:59:11
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发出眩目光芒
发表于 2025-3-30 20:31:21
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比目鱼
发表于 2025-3-31 00:44:54
Earth Duness them are common to many cultures within arid or semi-arid regions. Descriptions of various sand dunes exist almost since the development of writing (see Part 5), but this early information is necessarily anecdotal in nature.
Feckless
发表于 2025-3-31 00:51:58
Mars Dunesrs. The red color is clearly visible to the unaided eye, particularly when Mars is closest to the Earth (roughly every 26 months), leading to the association of this planet with the god of war. As the positions of the planets were monitored systematically, careful observers noted that Mars occasiona
助记
发表于 2025-3-31 07:38:56
Venus Dunesranged from a global ocean world (of water), to a tarry swamp, other speculations were of a desert world. In many respects, this last perspective has been borne out, although Venus seems largely to be a rocky rather than a sandy world, dominated by volcanic and tectonic processes, rather than erosio
CORD
发表于 2025-3-31 11:06:41
Other Dune Worlds90s, the number of confirmed candidates (albeit mostly gas giants) is approaching 1000. Some of these planets have rocky surfaces, and it seems certain that our galaxy, and indeed the universe, is teeming with worlds on which dunes may exist.
geriatrician
发表于 2025-3-31 15:51:40
Field Studiesosely. Here we review some of the field research techniques that have been and are employed. Crudely speaking, these techniques may be gathered in four categories: the study of sand, the study of shape and structure, observation of wind, and the study of aeolian processes.