Tag Archives: active dunes

HiRISE: Dunes buried by water ice

Dunes buried by water ice. Beautiful Mars series.

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Curiosity’s dune studies yield a surprise

Some of the wind-sculpted sand ripples on Mars are a type not seen on Earth, and their relationship to the thin Martian atmosphere today provides new clues about the atmosphere’s history. The determination that these mid-size ripples are a distinct … Continue reading

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THEMIS: Wegener Crater dunes – false color

THEMIS Image of the Day, June 23, 2016. Today’s false color image shows some of the dunes on the floor of Wegener Crater. Dunes often appear as a dark blue in false color THEMIS images. The THEMIS VIS camera contains … Continue reading

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THEMIS: Dark dunes in Isidis Planitia crater

THEMIS Image of the Day, April 14, 2016. Small, dark dunes are located on the floor of this unnamed crater in Isidis Planitia. More THEMIS Images of the Day by geological topic.  

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HiRISE: Dark dunes on light bedforms

Dark dunes superimposed on light bedforms — some dunes just like to be in the spotlight. Beautiful Mars series.

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HiRISE: Tracking dune changes, Chasma Boreale

Tracking dune changes in Chasma Boreale. Beautiful Mars series.

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HiRISE: All along the fractures

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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THEMIS: Pettit Crater – false color

THEMIS Image of the Day, September 17, 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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Opportunity: South wall of Marathon Valley

Sol 4119, August 26, 2015. The rover Pancam shot a multi-filtered set of images looking southeast from near the head of Marathon Valley. The images, processed into a false-color composite by Holger Isenberg, show the valley bottom and south wall … Continue reading

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THEMIS: Noachis Terra dunes — false color

THEMIS Image of the Day, August 4, 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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