Tag Archives: polar sand dunes

THEMIS: At the north polar cap’s edge

THEMIS Image of the Day, August 7, 2019. Today’s VIS image is located on the edge of the polar cap. The ice is located at the bottom of the frame, with the surrounding plains at the top half. The circular … Continue reading

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THEMIS: Frosty dunes in Hyperboreae Undae

THEMIS Image of the Day, August 5, 2019. Several dune fields encircle the north polar cap. Hyperboreae Undae is one of them, located near Escorial Crater and Chasma Boreale. This VIS image was taken during the spring season, when the … Continue reading

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HiRISE: Dunes next to a central peak

The dunes, they are coming for you! These dunes are next to a central peak in a crater. Beautiful Mars series. [More at links]

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HiRISE: Pettit Crater wind streak and intracrater dunes

Pettit Crater wind streak and intracrater dunes. Part of the rationale for this observation is to look for dune bedforms that may be related to thermal inertia and particle mobility. This crater was named after Edison Pettit, an American astronomer (1890–1962). … Continue reading

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HiRISE: Dune transition in high southern latitudes

Sand dune populations on Mars can vary widely with respect to morphology, relief, and activity. One of the most striking examples occurs with the many dune fields of the high Southern latitudes. When we venture south of -60 degrees latitude, … Continue reading

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THEMIS: Southern dunes – false color

THEMIS Image of the Day, December 4, 2015. The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image. These false color images may reveal subtle variations … Continue reading

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Opportunity: Endeavour dunes

Sols 4087 and 4090, July 24 and 27, 2015. Opportunity’s Pancam shot this pair of images (in false color by Holger Isenberg) showing the dune field on the floor of Endeavour Crater at the foot of Marathon Valley. The rover … Continue reading

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THEMIS: Proctor Crater dunes

THEMIS Image of the Day, April 28, 2015. Today’s VIS image shows part of the dune field on the floor of Proctor Crater. More THEMIS Images of the Day by geological topic.

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THEMIS: More polar dunes

THEMIS Image of the Day, July 21, 2014. This VIS image shows part of the large dune field called Olympia Undae. There are hills in this region, and the dunes are concentrated in the lower elevations. More THEMIS Images of … Continue reading

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THEMIS: Apledon Undae

THEMIS Image of the Day, July 14, 2014. This VIS image shows part of Aspledon Undae, a region of dunes near the north pole. The right side of the image shows hundreds of small, isolated dunes. On the left side … Continue reading

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