Tag Archives: ice

THEMIS: Polar textures

Posted on September 19, 2014 by rburnham

THEMIS Image of the Day, September 19, 2014. Today’s polar image shows an unusual surface texture. The circular depressions look like Swiss cheese. More THEMIS Images of the Day by geological topic.

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THEMIS: South polar cap

Posted on September 18, 2014 by rburnham

THEMIS Image of the Day, September 18, 2014. Today’s VIS image shows a small part of the south polar cap. More THEMIS Images of the Day by geological topic.

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THEMIS: South polar cap

Posted on September 17, 2014 by rburnham

THEMIS Image of the Day, September 17, 2014. Spring has arrived at the south pole of Mars. The multitude of layers that make up the cap are readily visible in today’s THEMIS VIS image. More THEMIS Images of the Day … Continue reading →

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HiRISE: Seasonal sublimation site

Posted on August 27, 2014 by rburnham

Seasonal sublimation site. Beautiful Mars series.

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HiRISE: Glaciation at the eastern Hellas margin

Posted on August 16, 2014 by rburnham

Hellas Crater in the ancient highlands contains some of the clearest evidence on Mars for glacial processes. This image, on the eastern margin of the giant impact crater, shows a number of features consistent with glaciation. There are roughly north-south … Continue reading →

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HiRISE: Preserving ice from a vanished terrain

Posted on July 31, 2014 by rburnham

This HiRISE image shows what is termed a pedestal crater, so-called because the level of the surface adjacent to the crater is elevated relative to the surface of the surrounding terrain. The raised surface has patterns and a general outline … Continue reading →

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HiRISE: Frosty gullies

Posted on July 31, 2014 by rburnham

HiRISE monitoring has shown that gully formation on Mars occurs in winter and early spring in times and places with frost on the ground. This image was acquired in late winter, and the frost or ice (visible as white areas) … Continue reading →

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THEMIS: Coloe Fossae

Posted on July 22, 2014 by rburnham

THEMIS Image of the Day, July 22, 2014. The channels in this VIS image are part of Coloe Fossae, a series of linear depressions on the northeast margin of Terra Sabaea. More THEMIS Images of the Day by geological topic.

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HiRISE: Icy surface of the north polar cap

Posted on July 21, 2014 by rburnham

At Mars’ north pole is a dome of icy layers ranging up to 2 kilometers thick, roughly analogous to the Earth’s ice caps in Greenland or Antarctica. Although not visible here, the dome is characterized by incised spiraling troughs that … Continue reading →

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THEMIS: Protonilus Mensae

Posted on July 4, 2014 by rburnham

THEMIS Image of the Day, July 4, 2014. The hills in this VIS image are part of Protonilus Mensae, located on the northern margin of Terra Sabaea. More THEMIS Images of the Day by geological topic.

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