Tag Archives: dunes

HiRISE: Changing dunes of Wirtz Crater

Posted on January 20, 2017 by rburnham

The large dark feature is a classic Martian sand dune. Most sand on Earth is made from the mineral quartz, which is white and bright. On Mars, most sand is composed of dark basalt, a volcanic rock. For this reason, … Continue reading →

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HiRISE: Landforms at end of Her Desher Vallis

Posted on January 20, 2017 by rburnham

Landforms at west end of Her Desher Vallis. Beautiful Mars series.

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THEMIS: Gale Crater mound’s northern side

Posted on January 20, 2017 by rburnham

THEMIS Image of the Day, January 20, 2017. Today’s false color image shows part of the floor of Gale Crater and the northern side of Mt. Sharp (Aeolis Mons). The blue-colored areas on the crater floor are likely dunes made … Continue reading →

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THEMIS: Waves of dunes in Rabe Crater

Posted on January 18, 2017 by rburnham

THEMIS Image of the Day, January 18, 2017. Today’s false color image shows part of the sand dune field on the floor of Rabe Crater. (More on Rabe Crater here.) The THEMIS VIS camera contains 5 filters. The data from … Continue reading →

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THEMIS: Terra Sirenum dunes & gullies

Posted on January 16, 2017 by rburnham

THEMIS Image of the Day, January 16, 2017. Today’s VIS image is of an unnamed crater in Terra Sirenum. There are gullies dissecting part of the crater rim, and small dunes on the crater floor. More THEMIS Images of the … Continue reading →

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THEMIS: Active dunes in Noachis Terra

Posted on January 10, 2017 by rburnham

THEMIS Image of the Day, January 10, 2017. Today’s VIS image shows part of Noachis Terra, including several large dunes on the floor of an unnamed crater. These dunes are dark in tone, hence free of the light dust that’s … Continue reading →

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THEMIS: Firsoff Crater in false color

Posted on January 6, 2017 by rburnham

THEMIS Image of the Day, January 6, 2017. Today’s false color image shows part of the interior deposits and floor of Firsoff Crater. The “blue worms” at the bottom of the image are sand dunes. The THEMIS VIS camera contains … Continue reading →

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THEMIS: Dunes on floor of Newton Crater

Posted on January 4, 2017 by rburnham

THEMIS Image of the Day, January 4, 2017. Today’s false color image shows some of the floor of Newton Crater. The small dark bluish features are sand dunes. The curving lines reflect the wind patterns as they flow across the … Continue reading →

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THEMIS: Dunes and debris in Juventae Chasma

Posted on December 27, 2016 by rburnham

THEMIS Image of the Day, December 27, 2016. Today’s false color image shows part of Juventae Chasma, including sand dunes on the floor of the chasma. The THEMIS VIS camera contains 5 filters. The data from different filters can be … Continue reading →

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THEMIS: Basaltic dunes in Danielson Crater

Posted on December 26, 2016 by rburnham

THEMIS Image of the Day, December 26, 2016. Today’s false color image shows part of Danielson Crater. The dark blue features at the bottom of the image are sand dunes on the floor of the crater. The THEMIS VIS camera … Continue reading →

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