File:Close view of dune network ESP 031138 1380 02.jpg
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Captions
Captions
Field of intersecting dunes, as seen by HiRISE under HiWish program
Summary[edit]
| Description |
English: Field of intersecting dunes, as seen by HiRISE under HiWish program This image was named HiRISE picture of the day. NASA wrote the following caption for this image: Polygons are of great interest because they often indicate the presence of shallow ice or of desiccation such as in a mud flat. However, Nature sometimes seems too clever for us.
Polygons form by the intersecting ridges of sand dunes. If this deposit were to become indurated and eroded, we might not be able to tell that they originated as wind-blown dunes, and interpret the polygons as evidence for a dried-up lake, for example. Dunes often accumulate in the bottoms on craters, also a good setting for a (temporary) lake. The illumination is coming from the upper left, so the bluish ridges are high-standing. Written by: Alfred McEwen (narration: Tre Gibbs) (15 May 2013) |
| Date | 2013/05/15 |
| Source | https://www.uahirise.org/ESP_031138_1380 |
| Author | Jim Secosky suggested NASA image this spot with HiRISE under the HiWish program. The image credit should be: NASA/JPL-Caltech/UArizona/ |
| Camera location |  | View this and other nearby images on: OpenStreetMap |  |
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Licensing[edit]
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) |  |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 14:27, 24 November 2023 | | 1,322 × 934 (1.7 MB) | Jimmarsmars (talk | contribs) | Uploaded a work by Jim Secosky suggested NASA image this spot with HiRISE under the HiWish program. The image credit should be: NASA/JPL-Caltech/UArizona/ from https://www.uahirise.org/ESP_031138_1380 with UploadWizard |
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