Tag Archives: ground ice

New look at old data points to subsuface equatorial ice

Scientists taking a new look at older data from NASA’s longest-operating Mars orbiter have discovered evidence of significant hydration near the Martian equator — a mysterious signature in a region of the Red Planet where planetary scientists figure ice shouldn’t … Continue reading

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Radar shows thick, porous sediments & no ground ice under Meridiani Planum

New findings reveal deposits on Mars that could be interpreted to be ice-rich may contain little or no ice at all, based on an analysis of radar sounder data for Meridiani Planum — an area on the planet’s equator being … Continue reading

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HRSC: Crashing into martian mud

An impactor smashing into an ice-rich surface gave rise to the complex flow features around this ancient crater on Mars. Impacts of comets and asteroids have shaped the surfaces of rocky planets and moons over the Solar System’s 4.6 billion … Continue reading

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HiRISE: Within a crater in the Southern Highlands

Within a crater in the Southern Highlands. This is a very ancient crater, long filled-in. You can see polygonal patterns in the terrain, mainly due to the contraction of subsurface ice as the seasons change. Beautiful Mars series.

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Terraced craters reveal buried ice sheet on Mars

Planetary Geomorphology Image of the Month, June 30, 2017: A.M. Branson (University of Arizona). When an object impacts into layered material, it can form a crater with terraces in the crater’s walls at the layer boundaries, rather than the simple bowl-shape … Continue reading

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HiRISE: Rectangles with wiggly sides

Ground that has a lot of water ice mixed with dirt tends to crack in polygonal patterns bounded by short straight channels. In the South Polar region of Mars this type of terrain may be covered by a seasonal polar … Continue reading

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SHARAD finds ice deposit in Utopia Planitia with as much water as Lake Superior

Frozen beneath a region of cracked and pitted plains on Mars lies about as much water as what’s in Lake Superior, largest of the Great Lakes, researchers using NASA’s Mars Reconnaissance Orbiter have determined. Scientists examined part of Mars’ Utopia … Continue reading

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THEMIS: Yuty Crater

THEMIS Image of the Day, June 14, 2016. This VIS image shows a small portion of Yuty Crater’s ejecta blanket. The crater is off the image to the right. The lobes of ejecta end in a raised ridge of material; … Continue reading

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HiRISE: Crevasse-like features in the Utopia region

Crevasse-like features in the Utopia region. Beautiful Mars series.

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THEMIS: Aureum Chaos – false color

THEMIS Image of the Day, October 26, 2015. The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image. These false color images may reveal subtle variations of … Continue reading

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