Tag Archives: Olympia Undae

THEMIS: Olympia Undae

THEMIS Image of the Day, July 17, 2014. Today’s VIS image is part of Olympia Undae. Compare this to previous images and notice how uniform the dunes are in this region. More THEMIS Images of the Day by geological topic.

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THEMIS: Polar dunes

THEMIS Image of the Day, July 16, 2014. The dunes in this VIS image are part of Olympia Undae, a huge dune field near the north polar cap. More THEMIS Images of the Day by geological topic.

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THEMIS: North polar dunes

THEMIS Image of the Day, July 8, 2014. Today’s image is part of Olympia Undae, but unlike yesterday’s image, there is more topography in this region. The dunes are forming in the lower elevations, but can migrate up the sides … Continue reading

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THEMIS: Olympia Undae

THEMIS Image of the Day, July 7, 2014. Dunes cover all but the highest hill of this image. These dunes are part of Olympia Undae, a huge dune field located near the north pole. More THEMIS Images of the Day … Continue reading

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THEMIS: North polar dunes

THEMIS Image of the Day, June 30, 2014. Today’s VIS image shows dunes on the margin of Olympia Undae, a large dune field near the north pole. More THEMIS Images of the Day by geological topic.

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HiRISE: At the edge of a polar cap

Formative downslope winds descending on Mars’ North Polar ice cap likely play an important role in transporting sediment from the base of the ice cap into the dune fields that sit beyond the ice cap. The deep chasm that formed … Continue reading

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HiRISE: Dunes and ripples in Olympia Undae

Olympia Undae is a large field of sand dunes surrounding Mars’ North Polar ice cap. Because of the high latitude of the dunes, they are covered with water and carbon dioxide frost in the winter and are poorly illuminated. They … Continue reading

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THEMIS: Olympia Undae

THEMIS Image of the Day, April 10, 2014. The sand dunes in this VIS image are part of Olympia Undae, a huge sand sea located near the north polar cap. More THEMIS Images of the Day by geological topic.

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