Tag Archives: north polar ice cap

THEMIS: Polar dunes

Posted on June 20, 2014 by rburnham

THEMIS Image of the Day, June 20, 2014. The dark dunes in this VIS image are located in a depression bounded by ice. The polar ice is the bright material at the top and bottom parts of this image. More … Continue reading →

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THEMIS: North polar layers

Posted on June 9, 2014 by rburnham

THEMIS Image of the Day, June 9, 2014. This VIS image shows the layering of the north polar cap. Such layering is visible on the sides of troughs carved into the ice. More THEMIS Images of the Day by geological … Continue reading →

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HiRISE: At the edge of a polar cap

Posted on May 22, 2014 by rburnham

Formative downslope winds descending on Mars’ North Polar ice cap likely play an important role in transporting sediment from the base of the ice cap into the dune fields that sit beyond the ice cap. The deep chasm that formed … Continue reading →

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THEMIS: Polar layers

Posted on May 9, 2014 by rburnham

THEMIS Image of the Day, May 9, 2014. This VIS image shows the layering of the ice at the north pole. More THEMIS Images of the Day by geological topic.

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HiRISE: Exposure of north polar layered deposits

Posted on April 17, 2014 by rburnham

Beautiful Mars series. Exposure of north polar layered deposits. More Beautiful Mars images.

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THEMIS: Spring at the north pole

Posted on April 2, 2014 by rburnham

THEMIS Image of the Day, April 2, 2014. With summer fast appoaching, the frost has sublimated away and the layers that make up the north polar cap are easily discernable. More THEMIS Images of the Day by geological topic.

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HiRISE: Polar troughs and polar frost

Posted on March 27, 2014 by rburnham

Beautiful Mars series: Polar troughs and polar frost. More Beautiful Mars images.

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HiRISE: Don’t get lost in the North Polar Ice Cap

Posted on March 5, 2014 by rburnham

A bright ice cap of frozen water covers the North Pole of Mars. In the winter, thin coverings of carbon dioxide and water frost covers this area and these frosts finally disappear at the end of the Martian spring season. … Continue reading →

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Spiral troughs in Mars polar caps are born in ‘cyclic steps’

Posted on October 15, 2013 by rburnham

Both Martian polar caps have deep spiral troughs that slice into them for dozens or hundreds of kilometers, but their origin and development has been much debated by scientists. New work by a team of researchers led by Isaac Smith … Continue reading →

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Loess in the lowlands

Posted on December 11, 2012 by rburnham

A team of geologists led by James A. Skinner, Jr. (U.S. Geological Survey) has discovered and mapped a previously unidentified unit in the Martian northern lowlands. The unit appears to give evidence of a major climate shift long ago in … Continue reading →

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