Tag Archives: sand dunes

HiRISE: Proctor Crater dune field

Posted on July 18, 2019 by rburnham

Proctor Crater dune field. The dune field here in Proctor Crater is about 35 x 65 kilometers in size, and was one of the first sand dune fields ever recognized on Mars based on Mariner 9 images. HiRISE Picture of … Continue reading →

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HiRISE: Dunes within Arkhangelsky Crater

Posted on July 17, 2019 by rburnham

Dunes within Arkhangelsky Crater. Dark sand patches and dunes are likely to be active on the floor deposits of this 117-kilometer diameter impact crater. An additional goal is to look for changes from earlier HiRISE images. HiRISE Picture of the … Continue reading →

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HiRISE: Springtime for Russell Crater

Posted on July 15, 2019 by rburnham

Springtime for Russell Crater. Russell Crater is another favorite of ours, not only for its beauty, but also for the information it provides us for any changes due to sublimation, when a solid state changes directly to a gaseous one. … Continue reading →

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HiRISE: Watching the dune gullies

Posted on July 10, 2019 by rburnham

Watching the dune gullies. When dune gullies are as gorgeous as these, it’s an easy thing to want to continue to observe them for any seasonal changes. These are located in Matara Crater, a region that we’ve monitored before many … Continue reading →

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HiRISE: Dune footprints in Hellas Planitia

Posted on June 12, 2019 by rburnham

These curious chevron shapes in southeast Hellas Planitia are the result of a complex story of dunes, lava, and wind. Long ago, there were large crescent-shaped (barchan) dunes that moved across this area, and at some point, there was an … Continue reading →

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HiRISE: A song of dune and ice

Posted on June 5, 2019 by rburnham

A song of dune and ice. This image shows rare dunes superposed on elements of the polar cap near Olympia Undae, which is a vast dune field in the north polar region of Mars. HiRISE Picture of the Day archive. … Continue reading →

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THEMIS: Renaudot Crater’s dunes in false color

Posted on May 31, 2019 by rburnham

THEMIS Image of the Day, May 31, 2019. Today’s image shows part of the floor of Renaudot Crater, located on the margin between Terra Sabaea and Utopia Planitia. The small dark blue features at the top right corner of the … Continue reading →

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THEMIS: Herschel Crater floor in false color

Posted on May 29, 2019 by rburnham

THEMIS Image of the Day, May 29, 2019. This false color image shows part of the floor of Herschel Crater. The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create … Continue reading →

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Mars sand moves under different conditions than Earth sand

Posted on May 24, 2019 by rburnham

Wind has shaped the face of Mars for millennia, but its exact role in piling up sand dunes, carving out rocky escarpments or filling impact craters has eluded scientists until now. In the most detailed analysis of how sands move … Continue reading →

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THEMIS: Arabia Terra crater in false color

Posted on May 23, 2019 by rburnham

THEMIS Image of the Day, May 23, 2019. Today’s false color image shows part of an unnamed crater in Arabia Terra. The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to … Continue reading →

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