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Tag Archives: sand
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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THEMIS: Dunes changing from little to big
THEMIS Image of the Day, August 8, 2017. This image shows part of the dune field just south of the large sand ridge – which is visible on the very top of the image. There is a huge range of … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, dunes, Mars Odyssey, NASA, Noachis Terra, Russell Crater, sand, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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THEMIS: Fingers of sand in Russell Crater
THEMIS Image of the Day, August 4, 2017. This image shows the western part of the dune field on the floor of Russell Crater. Russell Crater is located in Noachis Terra. A spectacular dune ridge and other dune forms on … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, dunes, Mars Odyssey, NASA, Noachis Terra, Russell Crater, sand, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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Curiosity update: Kicking up some sand
Sol 1748-52, July 7, 2017, update by MSL scientist Michael Battalio: Curiosity has intentionally scuffed a nearby sand ripple, which has gifted the team with an exceptional view of the interior of these small sand deposits. The majority of the … Continue reading
Posted in Reports
Tagged Aeolis Mons, Curiosity, Enchanted Island, Gale Crater, Ile Damour, Mars Science Laboratory, Merrymeeting Bay, Mount Sharp, MSL, Murray Formation, NASA, sand, sand ripples, Thomas Little Toes, Vera Rubin Ridge, Verona
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Curiosity: Rolling over a ripple
Sol 1748, July 7, 2017. Curiosity rolled one wheel across a sand ripple, as scientists sought to see what its interior structure might be (above). At right, the views from the front and rear Hazcams. (Click any image to enlarge … Continue reading
Posted in Reports
Tagged Aeolis Mons, Curiosity, Gale Crater, Mars Science Laboratory, Mount Sharp, MSL, Murray Formation, NASA, sand, sand ripples, Vera Rubin Ridge
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Curiosity update: Bumping to a sand ripple
Sol 1748, July 6, 2017, update by MSL scientist Ken Herkenhoff: Another touch-and-go was strategically planned for today, and there is bedrock in the arm workspace, so the tactical science team selected a block named “Tupper Ledge” for contact science. … Continue reading
Posted in Reports
Tagged Aeolis Mons, Curiosity, dune ripples, Gale Crater, Harris, Mars Science Laboratory, Mount Sharp, MSL, Murray Formation, NASA, No Mans Land, sand, Sugar Loaves, Tupper Ledge, Vera Rubin Ridge
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HiRISE: Sandlot
Sandlot. Beautiful Mars series.
Posted in Reports
Tagged Beautiful Mars, ejecta, Gasa Crater, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, mass wasting, MRO, NASA, sand, University of Arizona
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