Tag Archives: dunes

HiRISE: Russell Crater dunes

O, Russell Crater dunes! Beautiful Mars series.

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HiRISE: Dune-ice interactions in Olympia Undae

Dune-ice interactions in Olympia Undae. Beautiful Mars series.

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THEMIS: North polar dunes

THEMIS Image of the Day, July 6, 2016. Multiple dune fields surround the north polar cap. This unnamed region of dunes is located between Olympia Undae (the largest dune field) and Abalos Undae. This image was acquired during northern summer, … Continue reading

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HiRISE: Glowing gullies in Kaiser Crater dunes

The giant sand dunes in Kaiser Crater experience gully erosion of the steep slip faces every year in late winter as the sun warms these slopes and seasonal carbon dioxide frost sublimates (meaning it changes from a solid to gas). … Continue reading

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HiRISE: Martian Morse code

These dark dunes are influenced by local topography. The shape and orientation of dunes can usually tell us about wind direction, but in this image, the dune-forms are very complex, so it’s difficult to know the wind direction. However, a … Continue reading

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HiRISE: Channeled valley east of Protonilus Mensae

Channelized valley east of Protonilus Mensae. Beautiful Mars series.

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THEMIS: Vernal Crater floor – false color

THEMIS Image of the Day, June 28, 2016. Today’s false color image shows part of the floor of Vernal Crater. Dark blue in this band configuration often indicates sand or basaltic materials. The THEMIS VIS camera contains 5 filters. The data … Continue reading

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THEMIS: Wegener Crater dunes – false color

THEMIS Image of the Day, June 23, 2016. Today’s false color image shows some of the dunes on the floor of Wegener Crater. Dunes often appear as a dark blue in false color THEMIS images. The THEMIS VIS camera contains … Continue reading

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HiRISE: At the edge of a dune sea

At the edge of a dune sea. Beautiful Mars series.

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HiRISE: The plains are not plain

This image covers some of the plains south of Capri Chasma in eastern Valles Marineris. Where the aeolian (wind-blown) sedimentary cover has been stripped away, we see diverse colors indicative of of a variety of altered minerals formed in Mars’ … Continue reading

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