Tag Archives: Olympia Undae

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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THEMIS: More Olympia Undae

THEMIS Image of the Day, March 28, 2016. The arc shaped feature at the bottom of this VIS image is the remaining rim of a crater. The dunes of Olympia Undae have surrounded the rim and small individual dunes are … Continue reading

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THEMIS: Olympia Undae

THEMIS Image of the Day, March 23, 2016. This VIS image shows a small portion of Olympia Undae, an extensive dune field near the north polar cap. This image was collected during summer, so the dunes are free of surface … Continue reading

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THEMIS: Olympia Undae

THEMIS Image of the Day, November 12, 2015. This VIS image shows part of Olympia Undae, a large sand sea located near the north polar cap. This image was collected during northern spring. As the region warms in the sun, … Continue reading

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THEMIS: Olympia Undae

THEMIS Image of the Day, August 25, 2014. The dunes in this VIS image are part of Olympia Undae. More THEMIS Images of the Day by geological topic.

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