Tag Archives: defrosting

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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THEMIS: Frost-free (almost) south polar ice cap

THEMIS Image of the Day, June 4, 2019. This VIS image shows part of the surface of the south polar cap. Collected at the end of southern summer, most of the ice is frost free and different textures are readily … Continue reading

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HiRISE: Dune swarm!

Dune swarm!  These dunes mean business here in Chasma Boreale. Beautiful Mars series. [More at links]

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HiRISE: Seasonal frost on crater slopes

Seasonal frost on crater slopes. Beautiful Mars series.

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THEMIS: Dunes don’t climb hills (very far)

THEMIS Image of the Day, March 8, 2018. This VIS image of Olympia Undae was collected during north polar spring. The crests of the dunes and other surfaces are light colored, indicative of a frost covering. At the top right … Continue reading

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THEMIS: Defrosting dunes in Olympia Undae

THEMIS Image of the Day, March 7, 2018. This VIS image of Olympia Undae was collected early in north polar spring. The crests of the dunes are light colored, indicative of a frost covering. As the season changes into summertime, … Continue reading

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HiRISE: Defrosting dunes

Defrosting dunes. They’re melting! They’re melting! Beautiful Mars series.

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THEMIS: “Dry spots” in the north polar sand sea

THEMIS Image of the Day, September 20, 2017. Siton Undae is a large dune field located in the northern plains near Escorial Crater. Siton Undae is west of the crater and is one of three dune fields near the crater. … Continue reading

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THEMIS: Basaltic dunes and frost in north polar lowlands

THEMIS Image of the Day, September 19, 2017. Siton Undae is a large dune field located in the northern plains near Escorial Crater. Siton Undae is west of the crater and is one of three dune fields near the crater. … Continue reading

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THEMIS: Frosty dunes in Siton Undae

THEMIS Image of the Day, September 18, 2017. Siton Undae is a large dune field located in the northern plains near Escorial Crater. Siton Undae is west of the crater and is one of three dune fields near the crater. … Continue reading

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