Tag Archives: Olympia Undae

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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THEMIS: Patterns in the sands of Olympia Undae

THEMIS Image of the Day, March 6, 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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THEMIS: Waves in the north polar sand sea

THEMIS Image of the Day, March 5, 2018. Olympia Undae is a vast dune field in the north polar region of Mars. It consists of a broad sand sea or erg that partly rings the north polar cap from about … Continue reading

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HiRISE: North polar gypsum dunes

These sand dunes are a type of aeolian bedform and partly encircle the Martian North Pole in a region called Olympia Undae. Unlike most of the sand dunes on Mars that are made of the volcanic rock basalt, these are … Continue reading

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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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THEMIS: More Olympia Undae

THEMIS Image of the Day, June 2, 2016. This VIS image shows a small portion of Olympia Undae, the largest of the dune fields surrounding the north polar cap. This image was collected during summer and no frost remains on … Continue reading

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THEMIS: Olympia Undae

THEMIS Image of the Day, June 1, 2016. This VIS image shows a small portion of Olympia Undae, the largest of the many dune fields surrounding the north polar cap. This image was collected during summer, and the dunes are … Continue reading

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THEMIS: Olympia Undae

THEMIS Image of the Day, May 23, 2016. This VIS image shows a small portion of Olympia Undae. Olympia Undae is the largest dune field at the margin of the north polar cap. This image was collected during northern hemisphere … Continue reading

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