Tag Archives: glaciers

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

Posted in Reports | Tagged , , , , , , , , , | Leave a comment

HiRISE: Crevassed glacier-like forms

Crevassed glacier-like forms. Beautiful Mars series.

Posted in Reports | Tagged , , , , , , , , , | Leave a comment

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

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

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

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

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

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

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

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

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

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

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

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

Debris-covered glaciers on Earth and Mars

Planetary Geomorphology Image of the Month, June 30, 2016: David P. Mayer (University of Chicago).  Debris-covered glaciers are glaciers whose ablation zones are at least partially covered by supraglacial debris. On Earth, debris-covered glaciers are found in all major mountain … Continue reading

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

THEMIS: Mamers Valles

THEMIS Image of the Day, June 3, 2016. This VIS image shows a small portion of Mamers Valles. Mamers Valles is a large complex set of channels in northern Arabia Terra that flow into Acidalia Planitia. More THEMIS Images of … Continue reading

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