File:ESP 021893 1315 (45250554205).jpg
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| Description |
Active Dunes in Wirtz Crater These gorgeous dunes are likely active, with ripples on their upwind slopes and dark streaks on their downwind slopes forming and changing due to wind-driven sand motion. This motion will also keep the dune brink (the edge between the two slopes) and bottom edges sharply defined. The dark lines and squiggles on the dune slope are formed by passing dust devils. NASA/JPL/University of Arizona (Alt: 255 km, less than 1 km across.) Source: www.uahirise.org/ESP_021893_1315 |
| Date | |
| Source | ESP_021893_1315 |
| Author | UAHiRISE (NASA) |
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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 | 10:14, 16 May 2019 | | 2,560 × 1,920 (7.55 MB) | Meisam (talk | contribs) | Transferred from Flickr via #flickr2commons |
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