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Tag Archives: sand dunes
HiRISE: Powerful winds and streaming sands
Powerful winds and streaming sands. This observation shows sand dunes within the Hellespontus region of Mars. The sand appears to come from the layered mesas and knobs, features that have been eroded by powerful winds. In fact the origin of … Continue reading
Posted in Reports
Tagged Beautiful Mars, dunes, Hellespontus, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, sand dunes, University of Arizona, wind
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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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HiRISE: Dune maze craze
Dune maze craze. This image shows sand dunes on the northern plains in the spring, when the seasonal frost is sublimating (and making crazy patterns). The dunes have coalesced here into an interlocking maze. Polygons between the dunes are due … Continue reading
Posted in Reports
Tagged Beautiful Mars, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, northern lowlands, northern plains, periglacial processes, periglacial terrain, sand dunes, University of Arizona
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HiRISE: Herd of dunes
Herd of dunes. Beautiful Mars series.
Posted in Reports
Tagged Beautiful Mars, dunes, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, northern lowlands, northern plains, sand dunes, University of Arizona
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THEMIS: Crater sands in false color
THEMIS Image of the Day, December 22, 2017. This is a false color image of Rabe Crater. In this combination of filters “blue” typically means basaltic sand. The THEMIS VIS camera contains 5 filters. The data from different filters can … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, dunes, false color, layered deposits, Mars Odyssey, NASA, Rabe Crater, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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THEMIS: Long swath across Rabe Crater in false color
THEMIS Image of the Day, December 21, 2017. This is a false color image of Rabe Crater. In this combination of filters “blue” typically means basaltic sand. This VIS image crosses the entire crater and demonstrates how extensive the dunes … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, dunes, false color, layered deposits, Mars Odyssey, NASA, Rabe Crater, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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THEMIS: Rabe Crater’s pit in false color
THEMIS Image of the Day, December 20, 2017. This is a false color image of Rabe Crater. In this combination of filters “blue” typically means basaltic sand. The THEMIS VIS camera contains 5 filters. The data from different filters can … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, dunes, false color, layered deposits, Mars Odyssey, NASA, Rabe Crater, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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THEMIS: Rabe Crater dunes in false color
THEMIS Image of the Day, December 19, 2017. This is a false color image of Rabe Crater. In this combination of filters “blue” typically means basaltic sand. The THEMIS VIS camera contains 5 filters. The data from different filters can … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, dunes, false color, layered deposits, Mars Odyssey, NASA, Rabe Crater, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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THEMIS: Sand sheet in Rabe Crater
THEMIS Image of the Day, December 18, 2017. The majority of the dune field in Rabe Crater consists of a sand sheet with dune forms on the surface. The sand sheet is where a thick layer of sand has been … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, dunes, layered deposits, Mars Odyssey, NASA, Rabe Crater, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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THEMIS: Landscapes control winds, dunes in Rabe Crater
THEMIS Image of the Day, December 15, 2017. This VIS image provides another instance where the topography of the upper floor material affects the winds and dune formation. At the edges of the dune field, the dunes become smaller and … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, dunes, layered deposits, Mars Odyssey, NASA, Rabe Crater, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System, wind
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