Tag Archives: north polar ice cap

Mars CO2 ice cap throughout the martian year

This animation shows a side-by-side comparison of CO2 ice at the north (left) and south (right) Martian poles over the course of a typical year (two Earth years). This simulation isn’t based on photos; instead, the data used to create … Continue reading

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Mars Express: From horizon to horizon

Fifteen years ago, ESA’s Mars Express was launched to investigate the Red Planet. To mark this milestone comes a striking view of Mars from horizon to horizon, showcasing one of the most intriguing parts of the martian surface. On 2 … Continue reading

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THEMIS: Polar layers

THEMIS Image of the Day, May 28, 2018. This VIS image shows part of the margin of the north polar cap and the surrounding plains. The layering of the ice is easily visible due to the dust that is deposited … Continue reading

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THEMIS: Polar dunes and layers of ice and dust

THEMIS Image of the Day, May 24, 2018. This VIS image shows the margin between the polar cap and the surrounding plains. There are dunes on the plains at the top of the image. In the upper left corner it … Continue reading

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THEMIS: Polar winds streaming off the ice cap

THEMIS Image of the Day, April 5, 2018. This VIS image shows ‘streamers’ of clouds created by katabatic winds at the north polar cap. Katabatic winds are created by cold air sinking at the pole and then speeding along the … Continue reading

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HiRISE: Defrosting dunes within Chasma Boreale

This image shows a dune field in Chasma Boreale, which is a large trough that cuts into the North Polar ice cap. Some of the dunes in this image are quite long and sinuous with a slight bulge at one … Continue reading

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Radar gives new info on Mars climate change, polar cap ages

Three-dimensional (3-D) subsurface radar volumes generated from thousands of 2-D radar profiles are revealing new information about the polar regions of Mars, including more accurate mapping of CO2 and water ices, the discovery of buried impact craters, and new elevation … Continue reading

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THEMIS: Northern ice cap’s edge in false color

THEMIS Image of the Day, June 19, 2017. Do you see what I see? I’d hang this piece of abstract art on my wall. (THEMIS Art #136) More THEMIS Images of the Day by geological topic.

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THEMIS: North polar ice cap troughs and layers

THEMIS Image of the Day, June 28, 2017. Do you see what I do? Looks like a person’s profile at the bottom of this image. (THEMIS Art #135) More THEMIS Images of the Day by geological topic.

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How Mars got its layered north polar cap

One of Mars’s most striking features is the giant dome of layered ice and dust at its northern pole, analogous to Earth’s ice sheets. Scientists have long debated what formed this dome, thought to have begun developing about 5 million … Continue reading

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