Tag Archives: sand dunes

THEMIS: Bare patches in north polar sand sea

THEMIS Image of the Day, September 13, 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: Dunes of Siton Undae

THEMIS Image of the Day, September 12, 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: 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: Exploring the sandy province of Herschel Crater

While perhaps not awe-inspiringly beautiful, sand sheets can tell us about Mars’ current and past environmental conditions as a piece of the puzzle for understanding habitability. This view shows the downwind stretches of a sand sheet in central part of … Continue reading

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HiRISE: Opposing dunes, opposing winds

On one side of this image, fairly textbook-looking barchan sand dunes sit atop the bedrock. Barchan dunes pointing in the opposite direction are just a few kilometers away to the east. In between these opposing barchan dunes are star dunes. … Continue reading

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HiRISE: A world of snowy dunes

It is spring in the Northern hemisphere when we took this image. Over the winter, snow and ice have inexorably covered the dunes. Unlike on Earth, this snow and ice is carbon dioxide, better known to us as dry ice. … Continue reading

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THEMIS: Basaltic sands in Russell Crater dune ridge

THEMIS Image of the Day, August 11, 2017. This image shows the western part of the dune field on the floor of Russell Crater. This is a false color image of Russell crater and it’s surroundings. Sand dunes usually appear … Continue reading

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THEMIS: Higher Sun angle changes look of Russell Crater’s dunes & dune ridge

THEMIS Image of the Day, August 10, 2017. This image shows the central part of the dune field on the floor of Russell Crater, including the large dune ridge. Comparing this image to yesterday’s you will see a significant difference … Continue reading

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THEMIS: Dune field and ridge in Russell Crater

THEMIS Image of the Day, August 9, 2017. This image shows the central part of the dune field on the floor of Russell Crater, including the smaller dunes and the massive ridge of sand. Russell Crater is located in Noachis … Continue reading

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THEMIS: Dunes changing from little to big

THEMIS Image of the Day, August 8, 2017. This image shows part of the dune field just south of the large sand ridge – which is visible on the very top of the image. There is a huge range of … Continue reading

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