Tag Archives: north polar layered deposits

Multiple former ice caps lie under the northern cap

Scientists have discovered remnants of ancient ice sheets buried in sand a mile beneath Mars’s north pole, they report in a new study. The findings show conclusive evidence of the waxing and waning of polar ice on the red planet … Continue reading

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THEMIS: Polar cap’s edge in false color

THEMIS Image of the Day, May 22, 2019. Today’s false-color image shows the margin between the north polar cap and the surrounding plains (lower right). The polar cap was created by alternating layers of ice and dust, deposited over millions … Continue reading

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HiRISE: Megadunes in Hyperborei Cavi

Megadunes in Hyperborei Cavi. A cavus is an irregular steep-sided depression usually in arrays or clusters. Plus: MEGADUNES! HiRISE Picture of the Day archive. [More at links]

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THEMIS: North polar ice cap in false color

THEMIS Image of the Day, April 18, 2019. The polar caps of Mars were deposited over millions of years. Seasonal depositions of ice and dust have created layer upon layer of material. In this false color image the white and … Continue reading

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THEMIS: Polar cap layers at Ultima Lingula

THEMIS Image of the Day, February 4, 2019. Today’s VIS image is located along the margin of Ultima Lingula, where the polar cap meets the surrounding plains. The feature in the center of the image is a chasma where the … Continue reading

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HiRISE: Crater on north polar layered deposits

Crater on north polar layered deposits. Even at HiRISE resolution, it’s difficult to spot in black and white, but the color enhanced picture at full resolution tells a different story. Beautiful Mars series. [More at links]

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HiRISE: Lingering frost

Lingering frost. The North Polar layered deposits comprise a thick stack of icy layers. Part of this image has lingering seasonal frost, which serves to accentuate those layers.  An additional rationale for this observation is to document new activity in … Continue reading

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HiRISE: Ice block avalanche

HiRISE has been re-imaging regions first photographed in 2006 through 2007, six Mars years ago. This long baseline allows us to see large, rare changes as well as many smaller changes. One of the most actively changing areas on Mars … Continue reading

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HiRISE: Ever winding

Ever winding. This image (and its partner) was acquired to compare against an earlier stereo pair of the same region several years ago to determine if any changes have occurred. Beautiful Mars series. [More at links]

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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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