Tag Archives: glaciers

THEMIS: Moreux Crater’s pocketful of dunes

THEMIS Image of the Day, November 13, 2017. Moreux Crater is located in northern Arabia Terra and has a diameter of 138 kilometers. The crater contains a central peak, and dunes on the floor of the crater. This VIS image … Continue reading

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How water could flow on icy early Mars

Research by planetary scientists at Brown University finds that periodic melting of ice sheets on a cold early Mars would have created enough water to carve the ancient valleys and lakebeds seen on the planet today. For scientists trying to … Continue reading

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HiRISE: Go with the (bright) flow

Many slopes in the middle latitudes of Mars show icy flows or glaciers. The region shown here, in the south-facing slope of a crater, is unusual because the flows have bright highlights. The color and brightness variations are likely due … Continue reading

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HiRISE: Crevassed glacier-like forms

Crevassed glacier-like forms. Beautiful Mars series.

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HiRISE: Icy flow in a crater

The material on the floor of this crater appears to have flowed like ice, and contains pits that might result from sublimation of subsurface ice. The surface is entirely dust-covered today. There probably was ice here sometime in the past, … Continue reading

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HRSC: Buried glaciers on Mars

This jumble of eroded blocks lies along the distinctive boundary between the Red Planet’s southern highlands and the northern lowlands, with remnants of ancient glaciers flowing around them. This boundary is one of the oldest and most prominent features on … Continue reading

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HiRISE: Surface patterns of glacier-like landforms

The rotational axis of Mars is currently tilted by about 25 degrees, very similar to that of the Earth (at 23.4 degrees). However, while Earth’s axial tilt (also known as “obliquity”) tends to change very slightly over time (almost 3 … Continue reading

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THEMIS: Ice-choked Mamers Valles

THEMIS Image of the Day, August 23, 2016. This VIS image shows a small portion of Mamers Valles. Mamers Valles is a complex channel system that drained the highlands of Arabia Terra into the lowlands of Acidalia Planitia. More THEMIS … Continue reading

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HiRISE: Glorious glacier

This image has low-sun lighting that accentuates the many transverse ridges on this slope, extending from Euripus Mons (mountains). These flow-like structures were previously called “lobate debris aprons,” but the Shallow Radar (SHARAD) instrument on MRO has shown that they … Continue reading

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THEMIS: Ice-choked channels at highlands’ edge

THEMIS Image of the Day, July 14, 2016. This VIS image is located on the eastern margin of Terra Sabaea. The boundary region between the highlands of Terra Sabaea and the lower elevations of Utopia Planitia is a complex of … Continue reading

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