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- THEMIS: Thermal Emission Imaging System
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Tag Archives: frost
HiRISE: Light, shadow, and frost
Light, shadow, and frost. The frost is carbon dioxide, less likely to sublimate (going direcly from a solid to a gas) in shadow than fully exposed to the Sun. Beautiful Mars series.
Posted in Reports
Tagged Beautiful Mars, CO2 frost, frost, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA
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THEMIS: Polar dunes
THEMIS Image of the Day, August 6, 2014. The dunes in this VIS image are part of Olympia Undae. More THEMIS Images of the Day by geological topic.
Posted in Reports
Tagged Arizona State University, ASU, dunes, frost, Mars Odyssey, NASA, north polar sand sea, Olympia Undae, sand, sand dunes, THEMIS, Thermal Emission Imaging System
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THEMIS: Dark dunes
THEMIS Image of the Day, August 4, 2014. The small, dark dunes in this VIS image are located on the northern plains. More THEMIS Images of the Day by geological topic.
Posted in Reports
Tagged Arizona State University, ASU, dunes, frost, Mars Odyssey, NASA, northern lowlands, polar dunes, sand dunes, THEMIS, Thermal Emission Imaging System
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HiRISE: Frosty gullies
HiRISE monitoring has shown that gully formation on Mars occurs in winter and early spring in times and places with frost on the ground. This image was acquired in late winter, and the frost or ice (visible as white areas) … Continue reading
Posted in Reports
Tagged frost, gullies, High Resolution Imaging Science Experiment, HiRISE, ice, Mars Reconnaissance Orbiter, MRO, NASA, University of Arizona
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THEMIS: Lonar Crater
THEMIS Image of the Day, July 18, 2014. Today’s VIS image shows Lonar Crater. This crater has undergone very little modification since it formed, and so is one of the younger features in this region. More THEMIS Images of the … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, craters, frost, Lonar Crater, Mars Odyssey, NASA, THEMIS, Thermal Emission Imaging System
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HiRISE: Bright deposits on dunes
Beautiful Mars series. Bright deposits on dunes. More Beautiful Mars images.
Posted in Reports
Tagged Beautiful Mars, frost, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, polar sand dunes, sand dunes, University of Arizona
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HiRISE: What gullies can say
Right past the sharp, but warped rim of this ancient impact crater are deposits of winter frost, which show up as blue in enhanced color. There are two possible science goals that we can study here: what does the terrain…. … Continue reading
Posted in Reports
Tagged frost, gullies, High Resolution Imaging Science Experiment, HiRISE, ice, Mars Reconnaissance Orbiter, MRO, NASA, recurring slope lineae, RSL, University of Arizona, water
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HiRISE image: Frost in dune shadows
This Southern autumn image captures a view of frosty dunes. The sunlight is shining on the dunes from the upper right. The low sun angle creates large shadows from these dunes, making for a dramatic picture. Frost is visible in … Continue reading
Posted in Reports
Tagged dunes, frost, High Resolution Imaging Science Experiment, HiRISE, ice, Mars Reconnaissance Orbiter, MRO, NASA, sand dunes, University of Arizona
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HiRISE image: High-latitude crater
Beautiful Mars series: High-latitude (72° N) crater, with frost vanishing from its interior walls as spring advances. More Beautiful Mars images.
Posted in Reports
Tagged Beautiful Mars, craters, frost, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, northern plains, University of Arizona
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Polar gullies erode from carbon dioxide flows
Gullies on Martian slopes form by flowing water, most probably trickles of snowmelt or groundwater. But what about the gullies found in places such as the high latitudes and polar regions where temperatures never rise above the freezing point for … Continue reading