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Tag Archives: sand
HiRISE: The bedforms, they are a-changin’
The bedforms, they are a-changin’. This is in Zephyria Planum. Beautiful Mars series. [More at links]
Posted in Reports
Tagged Beautiful Mars, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, sand, University of Arizona, wind erosion, yardangs, Zephyria Planum
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HiRISE: The sand always gets through
The sand always gets through. There are also eroded layers here in Orson Welles Crater. Beautiful Mars series. [More at links]
Posted in Reports
Tagged Beautiful Mars, High Resolution Imaging Science Experiment, HiRISE, layered deposits, Mars Reconnaissance Orbiter, MRO, NASA, Orson Welles Crater, sand, sand dunes, Shalbatana Vallis, University of Arizona, Xanthe Terra
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HiRISE: Of sand, rock, and dust
Of sand, rock, and dust. There is some wonderful stratigraphy on display here in Meridiani Planum. Beautiful Mars series. [More at links]
Posted in Reports
Tagged Beautiful Mars, dunes, dust, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, Meridiani Planum, MRO, NASA, sand, University of Arizona
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THEMIS: Wind, dust, and gravity in Medusae Fossae
THEMIS Image of the Day, April 10, 2018. This VIS image is located in Medusae Fossae. Along the cliffside several dark streaks are visible. It is thought that these streaks mark the location where downslope movement of material has removed … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, dark slope streaks, dust, Mars Odyssey, Medusae Fossae, NASA, sand, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System, wind erosion, yardangs
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HiRISE: Horse playing the flute
Horse playing the flute. Maybe you can see a horse playing a flute here, but really this is a portion of the floor of Eberswalde Crater, at one time candidate landing site for the Mars Science Laboratory. The light-toned bedrock … Continue reading
Posted in Reports
Tagged Beautiful Mars, bedrock, Eberswalde Crater, eolian processes, High Resolution Imaging Science Experiment, HiRISE, lacustrine sediments, lake bed sediments, landing sites, Mars Reconnaissance Orbiter, MRO, NASA, sand, sand dunes, University of Arizona
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HiRISE: Seasonal haloes and fractals
Seasonal haloes and fractals. In the spring, as the winter layer of dry ice covering the polar regions sublimates, there is a lot of action. The ice layer cracks and ruptures, and escaping gas lofts sand from the dunes above … Continue reading
Posted in Reports
Tagged Beautiful Mars, CO2 ice, dunes, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, sand, sand dunes, University of Arizona
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RSLs are flowing sand, not water?
Dark features previously proposed as evidence for significant liquid water flowing on Mars have now been identified as granular flows, where sand and dust move rather than liquid water, according to a new article published in Nature Geoscience by the … Continue reading
Sublimation of water can levitate sediments for downslope movement
Scientists from The Open University (OU) have discovered a process that could explain the long-debated mystery of how land features on Mars are formed in the absence of significant amounts of water. Experiments carried out in the OU Mars Simulation … Continue reading
HiRISE: Where does the sand come from?
The grains of sand that make up sand dunes on Earth and Mars have a hazardous existence because of the way that they travel. Wind-blown sand is lifted above the surface of each planet before crashing onto the ground and … Continue reading
Posted in Reports
Tagged High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, sand, sand dunes, sand grains, University of Arizona
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