Tag Archives: dunes

THEMIS: Proctor Crater dunes

THEMIS Image of the Day, April 28, 2015. Today’s VIS image shows part of the dune field on the floor of Proctor Crater. More THEMIS Images of the Day by geological topic.

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HiRISE: Dunes on the floor of Dokuchaev Crater

Dunes on the floor of Dokuchaev Crater. Beautiful Mars series.

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HiRISE: Layers and dark dunes

The target of this observation is a circular depression in a dark-toned unit associated with a field of cones to the northeast. At the image scale of a Context Camera image, the depression appears to expose layers especially on the … Continue reading

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THEMIS: Crater dunes

THEMIS Image of the Day, April 10, 2015. This VIS image shows a large sand sheet with surface dune forms on the floor of an unnamed crater in Noachis Terra. More THEMIS Images of the Day by geological topic.  

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THEMIS: Dunes in IR

THEMIS Image of the Day, March 23, 2015. Warm dunes are brighter than their surroundings in this infrared image of an unnamed crater in Noachis Terra. More THEMIS Images of the Day by geological topic.

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THEMIS: Trouvelot Crater false color

THEMIS Image of the Day, March 20, 2015. The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image. These false color images may reveal subtle variations … Continue reading

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THEMIS: Noachis Terra dunes VIS

THEMIS Image of the Day, March 13, 2015. Today’s VIS image was collected at the same time as yesterday’s IR image. The dunes are darker in visible wavelengths than the surrounding material. More THEMIS Images of the Day by geological … Continue reading

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THEMIS: Noachis Terra dunes IR

THEMIS Image of the Day, March 12, 2015. This IR image shows a dune field on the floor of an unnamed crater in Noachis Terra. The bright tone indicates the dunes are warmer than most of the material surrounding them. … Continue reading

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THEMIS: Russell Crater dunes IR

THEMIS Image of the Day, March 10, 2015. In this infrared image of the dunes on the floor of Russell Crater, the dunes are brighter than the surround materials. This shows that the dunes are warmer than the nearby rocky … Continue reading

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HiRISE: Dunes in Medusae Fossae formation

The dark dunes in the western Medusae Fossae formation provide some evidence of having a local origin. This image shows no large dunes, but many of the dark sand patches cover slopes up to discrete layers. It is possible that … Continue reading

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