Mars may be the Red Planet, but false-color images like this one can help us learn about its weather and geology. This High Resolution Imaging Science Experiment (HiRISE) image shows a variety of wind-related features on Mars near the center of Gamboa Crater, an impact crater that lies at the transi
This HiRISE image shows a variety of wind-related features near the center of Gamboa Crater. Credit: NASA/JPL-Caltech/University of Arizonamay be the Red Planet, but false-color images like this one can help us learn about its weather and geology. This High Resolution Imaging Science Experiment image shows a variety of wind-related features on Mars near the center of Gamboa Crater, an impact crater that lies at the transition from Chryse Planitia to Acidalia Planitia.
There are tiny ripples on the tops of the dunes that are only several feet from crest to crest. These merge into larger mega-ripples that are about 30 feet apart and radiate outward from the dunes. The larger, brighter formations that are roughly parallel are known as “Transverse Aeolian Ridges” . These TAR are covered with very coarse sand.
The mega-ripples appear blue-green on one side of an enhanced color cutout while the TAR appear brighter blue on the other. This could be because the TAR are actively moving under the force of the wind, clearing away darker dust and making them brighter. All of these different features can indicate which way the wind was blowing when they formed.
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