Tag Archives: dunes

THEMIS: Sea of dunes in Rabe Crater

Posted on February 5, 2019 by rburnham

THEMIS Image of the Day, February 5, 2019. This VIS image shows part of the floor of Rabe Crater. The floor of Rabe Crater has undergone several surface changing events. At some point after the crater was formed it was … Continue reading →

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HiRISE: Landforms northwest of Herschel Crater

Posted on January 31, 2019 by rburnham

Landforms northwest of Herschel Crater. Herschel Crater is a 304 kilometer impact basin in the Martian Southern Hemisphere. We have imaged the crater enough times to learn that dunes here are not stationary but move over time. The crater is … Continue reading →

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THEMIS: Dune patch in a Sirenum crater

Posted on January 29, 2019 by rburnham

THEMIS Image of the Day, January 29, 2019. A field of sand dunes is visible on the floor of this unnamed crater. The crater is located in Terra Sirenum. See more THEMIS Images of the Day by geological subject.

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HiRISE: A first look at dunes

Posted on January 24, 2019 by rburnham

This image shows us a cross-section of a dune field. Dune shape depends on several factors, including the amount of sand present and the local wind directions. This dune field displays several distinct dune morphologies. We see both individual barchan-like … Continue reading →

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HiRISE: The source of dunes in Chasma Boreale

Posted on January 15, 2019 by rburnham

The source of dunes in Chasma Boreale. This image shows dunes during the summer, when they were free from the seasonal layer of carbon dioxide ice that covers the region for much of the year. These dunes, which are near … Continue reading →

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THEMIS: Terra Sirenum crater dunes

Posted on January 3, 2019 by rburnham

THEMIS Image of the Day, January 3, 2019. Dark dunes fill part of the floor of this unnamed crater in Terra Sirenum. There are numerous gullies on the rim of the crater. Winds are moving the sand towards the upper … Continue reading →

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Dunes decrease in size at high southern latitudes, likely from ground ice cementation

Posted on December 28, 2018 by rburnham

[Editor’s note: From a paper by Maria Banks and seven co-authors recently published in the Journal of Geophysical Research.] Patterns in Mobility and Modification of Middle‐ and High‐Latitude Southern Hemisphere Dunes on Mars • The mobility of dunes and ripples … Continue reading →

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THEMIS: Dunes on the move in Aonia Terra

Posted on December 28, 2018 by rburnham

THEMIS Image of the Day, December 28, 2018. Located in the center of this VIS image is a group of sand dunes. With enough wind and sand, sand dunes are formed. Dune morphology typically has a shallow slope on the … Continue reading →

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THEMIS: On the edge of the south polar ice cap

Posted on December 20, 2018 by rburnham

THEMIS Image of the Day, December 20, 2018. At the bottom of this image is the layered edge of the south polar cap. There are more layers visible between the bright polar material and the dark sand dunes at the … Continue reading →

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THEMIS: Tapestry of dunes in Proctor Crater

Posted on December 14, 2018 by rburnham

THEMIS Image of the Day, December 14, 2018. This VIS image shows part of the extensive dune field on the floor of Proctor Crater. Proctor Crater is located in Noachis Terra. See more THEMIS Images of the Day by geological … Continue reading →

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