Tag Archives: dune ripples

Seeing Mars in a grain of sand

Posted on October 24, 2018 by rburnham

[Ed. note: The following is a guide to two recent special issues of the Journal of Geophysical Research; both collect papers reporting on studies of the Bagnold Dunes in Gale Crater. The guide complements the MSL report posted earlier here.] … Continue reading →

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HiRISE: Dark and possibly stationary ripples

Posted on June 7, 2018 by rburnham

Dark and possibly stationary ripples in anomalous terrain.  These strange ripples are in some anomalous terrain on the Olympus Mons aureole. These dark ripples have not been imaged in about 8 years, so another shot should show movement…if there IS … Continue reading →

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Curiosity update: Bumping to a sand ripple

Posted on July 7, 2017 by rburnham

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

Posted on May 23, 2017 by rburnham

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

Posted on October 3, 2016 by rburnham

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

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Large aeolian ripples on Mars

Posted on August 1, 2016 by rburnham

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

Posted on July 15, 2015 by rburnham

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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