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Tag Archives: north polar sand sea
THEMIS: On the shore of a sea of sand
THEMIS Image of the Day, June 20, 2018. This VIS image shows a small part of the huge northern dune field called Olympia Undae. This dune field surrounds 1/3 of the north polar cap. Collected in northern summer, there is … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, Mars Odyssey, NASA, north polar sand sea, Olympia Undae, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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HiRISE: Of dunes and their stories
Of dunes and their stories. So far no seasonal changes have been detected here, making this site unique. Beautiful Mars series. [More at links]
Posted in Reports
Tagged Arrakis, Beautiful Mars, dunes, frost, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, north polar region, north polar sand sea, sand dunes, University of Arizona
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HiRISE: Corduroy dunes
Corduroy dunes. The permanent polar cap of Mars is encircled by sand dunes and looking like pulled threads, these dunes march across a fabric of patterned ground. At this time of the Martian year they are free of the seasonal … Continue reading
Posted in Reports
Tagged Beautiful Mars, dunes, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, north polar sand sea, patterned ground, sand dunes, University of Arizona
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HiRISE: Patches of snow
The North Pole of Mars is surrounded by a vast sea of sand dunes. In this dune field, the dunes are covered by a seasonal cap of dry ice in the winter. In early Martian summer, at the time we … Continue reading
Posted in Reports
Tagged CO2 ice, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, north polar sand sea, sand dunes, University of Arizona
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THEMIS: Frost-free dunes in the north polar sand sea
THEMIS Image of the Day, May 25, 2018. This VIS image shows part of Olympia Undae, a large dune field that surrounds part of the north polar cap. At the top of the image the dunes are small and isolated. … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, dunes, Mars Odyssey, NASA, north polar sand sea, Olympia Undae, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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HiRISE: Dune erosion and streaks
Dune erosion and streaks. One of the many seasonal images we take to detect changes. In this case, we want to quantify the process of erosion driven by sublimation on the dunes. (Sublimation is the process of going directly from … Continue reading
Posted in Reports
Tagged Beautiful Mars, dunes, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, north polar region, north polar sand sea, sand dunes, sublimation, University of Arizona
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