Tag Archives: dunes

THEMIS: Bamberg Crater dunes – false color

Posted on October 27, 2015 by rburnham

THEMIS Image of the Day, October 27, 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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HiRISE: Barchan dune wonderland

Posted on October 22, 2015 by rburnham

Barchan dune wonderland — The dark spots are the result of sublimation. Beautiful Mars series.  

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THEMIS: Proctor Crater dunes – false color

Posted on October 22, 2015 by rburnham

THEMIS Image of the Day, October 22, 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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HiRISE: Kasei Valles

Posted on October 16, 2015 by rburnham

Kasei Valles is a valley system was likely carved by some combination of flowing water and lava. In some areas, erosion formed cliffs along the flow path resulting in water or lava falls. The flowing liquid is gone but the … Continue reading →

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THEMIS: Melas Chasma – false color

Posted on October 8, 2015 by rburnham

THEMIS Image of the Day, October 8, 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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HiRISE: Aeolian features of Scandia Cavi

Posted on October 7, 2015 by rburnham

This HiRISE image shows modified barchan dunes with shapes that resemble “raptor claws.” The unusual morphology of these dunes suggests a limited supply of windblown sand. Winds likely blew from the northeast resulting in elongate dunes with an asymmetric downwind … Continue reading →

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HiRISE: All along the fractures

Posted on October 1, 2015 by rburnham

We often take images of sand dunes to study the mobile soils. These images provide information about erosion and movement of surface material, about wind and weather patterns, even about the soil grains and grain sizes. However, looking past the … Continue reading →

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HiRISE: Dust and dunes in western Medusae Fossae

Posted on September 18, 2015 by rburnham

This beautifully contrasted infrared-color image shows an area approximately 600 by 900 meters. This is a close-up of the western Medusa Fossae formation where we can see dust-covered rocky, bedrock surfaces (beige) and a bluish-tinted sand sheet that transitions into … Continue reading →

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HiRISE: Which came first?

Posted on September 17, 2015 by rburnham

The workings of the Martian winds are visible in this image of sand dunes trapped inside an unnamed crater in southern Terra Cimmeria. Many of the craters in the southern highlands of Mars contain sand dunes, and HiRISE is still … Continue reading →

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Curiosity panorama shows petrified sand dunes

Posted on September 11, 2015 by rburnham

Some of the dark sandstone in an area being explored by NASA’s Curiosity Mars rover shows texture and inclined bedding structures characteristic of deposits that formed as sand dunes, then were cemented into rock. A panorama from Curiosity’s Mast Camera … Continue reading →

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