Tag Archives: dune ripples

Curiosity update: Bumping to a sand ripple

Sol 1748, July 6, 2017, update by MSL scientist Ken Herkenhoff: Another touch-and-go was strategically planned for today, and there is bedrock in the arm workspace, so the tactical science team selected a block named “Tupper Ledge” for contact science. … Continue reading

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HiRISE: Dune ripples in Her Desher Vallis

These small ripples, about 10 meters apart, are located in Her Desher Vallis. Her Desher is a small channel that shows evidence of phyllosilicates—silicates with a sheet-like structure, such as clay minerals. Much larger images of this area show that … Continue reading

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HiRISE: Dark dunes over light-toned mega-ripples

Dark dunes over light-toned mega-ripples. Beautiful Mars series.

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Large aeolian ripples on Mars

Planetary Geomorphology Image of the Month, July 30, 2016: Ryan C. Ewing (Texas A&M University).  Ripples cover the surfaces of sand dunes on Earth and Mars. On Earth, ripples formed in typical aeolian sand (e.g., 0.1 and 0.3 mm) range … Continue reading

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HiRISE: Potential active processes in Porter Crater

The extended-mission status of the Mars Reconnaissance Orbiter and the HiRISE camera has greatly increased our understanding of numerous active processes occurring on Mars. By taking carefully planned repeat images of surface, we now have an important record of how … Continue reading

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