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Tag Archives: frost
THEMIS: Frosty dunes in Siton Undae
THEMIS Image of the Day, September 18, 2017. Siton Undae is a large dune field located in the northern plains near Escorial Crater. Siton Undae is west of the crater and is one of three dune fields near the crater. … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, CO2 frost, defrosting, dunes, Escorial Crater, frost, Mars Odyssey, NASA, northern lowlands, northern plains, sand dunes, sand sea, sand sheet, Siton Undae, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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HiRISE: Frosted valleys
Frosted valleys. Beautiful Mars series.
Posted in Reports
Tagged Beautiful Mars, CO2 frost, frost, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, University of Arizona
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THEMIS: Frost and south polar trough layers
THEMIS Image of the Day, June 26, 2017. Do you see what I see? Don’t be afraid, but it looks like a ghost! (THEMIS Art #133) More THEMIS Images of the Day by geological topic.
Posted in Reports
Tagged Arizona State University, ASU, CO2 frost, frost, Mars Odyssey, NASA, south polar ice cap, south polar layered deposits, THEMIS, THEMIS Art, THEMIS Image of the Day, Thermal Emission Imaging System
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THEMIS: South polar ice features
THEMIS Image of the Day, June 9, 2017. Today’s VIS image shows more of the south polar cap at the end of southern summer. More THEMIS Images of the Day by geological topic.
Posted in Reports
Tagged Arizona State University, ASU, CO2 frost, frost, Mars Odyssey, NASA, south polar ice cap, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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THEMIS: South polar textures as local summer ends
THEMIS Image of the Day, June 8, 2017. This VIS image of the south pole was taken at the end of summer. Frost will soon start to form as the season transitions into fall. Fall in the southern hemisphere means … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, CO2 frost, CO2 ice, frost, Mars Odyssey, NASA, south polar ice cap, south polar residual cap, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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HiRISE: A winter’s view of a gullied crater
This is the location with the most impressive known gully activity in the Northern hemisphere. Gullies are active in the winter due to carbon dioxide frost, but northern winters are shorter and warmer than southern winters, so there is less … Continue reading
Posted in Reports
Tagged CO2 frost, frost, gullies, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, University of Arizona
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HiRISE: Gullies in winter shadow
This is an odd-looking image. It shows gullies during the winter while entirely in the shadow of the crater wall. Illumination comes only from the winter skylight. We acquire such images because gullies on Mars actively form in the winter … Continue reading
Posted in Reports
Tagged CO2 frost, defrosting, frost, gullies, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, University of Arizona
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HiRISE: Frosty alcoves on Kaiser Crater dunes
Kaiser Crater hosts a large field of sand dunes. Every winter the dunes are covered with a layer of seasonal carbon dioxide ice (dry ice). In early spring the ice begins to sublimate (going directly from solid ice to gas). … Continue reading
Posted in Reports
Tagged CO2 frost, CO2 ice, dunes, frost, High Resolution Imaging Science Experiment, HiRISE, Kaiser Crater, Mars Reconnaissance Orbiter, MRO, NASA, University of Arizona
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Frosty nights year-round may stir Mars dust
Some dusty parts of Mars get as cold at night year-round as the planet’s poles do in winter, even regions near the equator in summer, according to new NASA findings based on Mars Reconnaissance Orbiter observations. [The findings are reported … Continue reading
HiRISE: Frosted dunes
Sand dunes cover much of this terrain, which has large boulders lying on flat areas between the dunes. It is now late winter here in the Southern hemisphere, and these dunes are just getting enough sunlight to start defrosting their … Continue reading
Posted in Reports
Tagged CO2 frost, frost, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, sand dunes, University of Arizona
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