Tag Archives: north polar sand sea

THEMIS: Marching dunes of Siton Undae

THEMIS Image of the Day, September 11, 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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HiRISE: Dunes in northern summer

This dune field formed near the base of the North Polar cap. Dunes require a source of loose particulate material to form. The source of the northern dune fields around the polar cap may be from the layers of dusty … 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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HiRISE: At the edge of a dune sea

At the edge of a dune sea. Beautiful Mars series.

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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: Hyperboreae Undae

THEMIS Image of the Day, May 17, 2016. Several dunes fields are found near the north polar cap. Today’s VIS image shows part of Hyperboreae Undae, which is located between Escorial Crater and the margin of Chasma Boreale. More THEMIS … Continue reading

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