Tag Archives: ground ice

Creepy stuff: possible solifluction on Mars

Planetary Geomorphology Image of the Month, November 30, 2017: Andreas Johnsson (University of Gothenburg, Sweden). Small-scale lobes on Mars (Fig. 1) are tens to hundreds of meters wide and consist of an arcuate frontal riser that is a meter to … Continue reading

Posted in Reports | Tagged , , , , , , | Comments Off

Ground ice lubricated Valles Marineris landslides

How good is your Martian geography? Does Valles Marineris ring a bell? This area is known for having landslides that are among the largest and longest in the entire solar system. They make the perfect object of study due to … Continue reading

Posted in Reports | Tagged , , , , | Comments Off

HiRISE: A collapsed crater rim

The eastern rim of this small 3.5-kilometer crater appears to have collapsed into a much larger crater (about 14-kilometers wide). The larger crater has a large ice flow around its central peak, and is non-circular, with large blocks further suggesting … Continue reading

Posted in Reports | Tagged , , , , , , , , | Comments Off

HiRISE: Candidate Red Dragon landing site

Candidate Red Dragon landing site in Arcadia Planitia. There are indications of shallowly buried remnant ice in this area. Beautiful Mars series.

Posted in Reports | Tagged , , , , , , , , , , , , , | Comments Off

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

Posted in Reports | Tagged , , , | Comments Off

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

Posted in Reports | Tagged , , , , , | Comments Off

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

Posted in Reports | Tagged , , , , , , , , , , , | Comments Off

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.

Posted in Reports | Tagged , , , , | Comments Off

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

Posted in Reports | Tagged , , | Comments Off

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

Posted in Reports | Tagged , , , , , , , , , | Comments Off