File:Russell Crater Dunes, Defrosted.jpg
本预览的尺寸：800 × 600像素。 其他分辨率：320 × 240像素 | 640 × 480像素 | 1,024 × 768像素 | 1,280 × 960像素 | 2,560 × 1,920像素。
原始文件 （2,560 × 1,920像素，文件大小：7.5 MB，MIME类型：image/jpeg）
摘要
| 描述 |
English: The Russell Crater dune field is covered seasonally by carbon dioxide frost, and this image shows the dune field after the frost has sublimated (evaporated directly from solid to gas). There are just a few patches left of the bright seasonal frost.
Numerous dark dust devil tracks can be seen meandering across the dunes. The face of the largest dune is lined with gullies. The source of the gullies is unclear but could involve erosion by the seasonal carbon dioxide ice. |
| 日期 | |
| 来源 | HiRISE |
| 作者 | NASA/JPL/University of Arizona |
Local Mars time: 3:20 PM. Latitude (centered): -54.3 °. Longitude (East): 12.9 °. Range to target site: 253.0 km. Original image scale range: 25.3 cm/pixel (with 1 x 1 binning) so objects ~76 cm across are resolved. Map projected scale: 25 cm/pixel and north is up. Map projection: EQUIRECTANGULAR. Emission angle: 6.1 °. Phase angle: 53.4 °. Solar incidence angle: 48 °, with the Sun about 42 ° above the horizon. Solar longitude: 252.7 °, Northern Autumn. For non-map projected products: North azimuth: 96 °. Sub-solar azimuth: 23.7 °.
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本文件完全由NASA创作，在美国属于公有领域。根据NASA的版权方针，NASA的材料除非另有声明否则不受版权保护。（参见Template:PD-USGov/zh、NASA版权方针页面或JPL图片使用方针。） |  |
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| 日期/时间 | 缩略图 | 大小 | 用户 | 备注 | |
|---|---|---|---|---|---|
| 当前 | 2010年11月10日 (三) 16:58 | | 2,560 × 1,920（7.5 MB） | Originalwana | {{Information |Description={{en|1=The Russell Crater dune field is covered seasonally by carbon dioxide frost, and this image shows the dune field after the frost has sublimated (evaporated directly from solid to gas). There are just a few pat |
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