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Tag Archives: sand dunes
HiRISE: Channeled southern highlands
This enhanced color image shows the heavily channeled and ancient southern highlands of Mars. The elongated and jagged features are windblown dunes, perhaps hardened and eroded. [More at link]
Posted in Reports
Tagged dunes, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, sand dunes, Southern Highlands, University of Arizona
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HiRISE: Tracking dune-alcove changes within Chasma Boreale dunes
Tracking dune-alcove changes within Chasma Boreale dunes. Beautiful Mars series. [More at links]
Posted in Reports
Tagged Beautiful Mars, Chasma Boreale, dunes, gully alcoves, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, sand dunes, University of Arizona
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HiRISE: Frosted dunes in north polar region
A soothing way to start your Monday. These polar dunes show both carbon dioxide frost (the while colored areas) along with darker material that’s been exposed due to sublimation, and is blown by the wind to form these dark spots. … Continue reading
Posted in Reports
Tagged Beautiful Mars, CO2 frost, dunes, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, north polar region, sand dunes, University of Arizona
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HiRISE: Dunes in western Medusae Fossae
Dunes in western Medusae Fossae. These dark dunes in the western Medusae Fossae Formation provide some evidence of being derived locally, probably coming from the north and because of the wind. Beautiful Mars series.
Posted in Reports
Tagged Beautiful Mars, dunes, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, Medusae Fossae Formation, MRO, NASA, sand dunes, University of Arizona, wind erosion, yardangs
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THEMIS: Dunes and creeping ground in Lyot Crater
THEMIS Image of the Day, April 11, 2018. Lyot Crater is a large, complex crater in the northern lowlands of Vastitas Borealis. This image is located along the southern rim of the crater and shows part of the dune fields … Continue reading
Posted in Reports
Tagged active dunes, Arizona State University, ASU, dunes, ice-rich mantling, Lyot Crater, Mars Odyssey, NASA, periglacial processes, sand dunes, solifluction, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System, Vastitas Borealis
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HiRISE: Gullies of Matara Crater
Gullies on Martian sand dunes, like these in Matara Crater, have been very active, with many flows in the last ten years. The flows typically occur when seasonal frost is present. Here, we see frost in and around two gullies, … Continue reading
Posted in Reports
Tagged dune gullies, dunes, frost, gullies, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, Matara Crater, MRO, NASA, sand dunes, University of Arizona
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HiRISE: Crater watchin’ in northeast Syrtis Major
Crater watchin’ in northeast Syrtis Major region. The dunes within the crater are fascinating for their cell shapes, caused by the wind. Beautiful Mars series.
Posted in Reports
Tagged Beautiful Mars, craters, dunes, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, NE Syrtis Major, sand dunes, Syrtis Major, University of Arizona, wind
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HiRISE: The moving sands of Lobo Vallis
Bright ripples line the topography in this region, formed within a past climate. Dark dunes and sand streaks (composed of basaltic sand) have moved and filled lower areas, pushed by more recent winds from the top towards the bottom of … Continue reading
Posted in Reports
Tagged basaltic sand, dunes, High Resolution Imaging Science Experiment, HiRISE, Lobo Vallis, Mars Reconnaissance Orbiter, MRO, NASA, sand dunes, sand ripples, sand streaks, University of Arizona
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THEMIS: Arabia Terra dune field in false color
THEMIS Image of the Day, March 23, 2018. This is a false color image of the dune field in the Arabia Terra crater. In this combination of bands, sand appears as a blue to dark blue color. In this image, … Continue reading
Posted in Reports
Tagged Arabia Terra, Arizona State University, ASU, dunes, dust, false color, hills, Mars Odyssey, mesas, NASA, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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THEMIS: Crater feeding sand into big dune field
THEMIS Image of the Day, March 22, 2018. The small crater in the image of the image is at the upwind side of the dune field. There is a considerable amount of sand within the crater, with a relatively smooth … Continue reading
Posted in Reports
Tagged Arabia Terra, Arizona State University, ASU, dunes, dust, hills, Mars Odyssey, mesas, NASA, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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