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Tag Archives: sand dunes
THEMIS: Crater dunes in Arabia Terra
THEMIS image of the Day, March 6, 2019. Today’s VIS image is located in Arabia Terra. The crater at the bottom of the image contains a large region of sand dunes. Dark blue in this band configuration indicates basaltic sand. … Continue reading
Posted in Reports
Tagged Arabia Terra, Arizona State University, ASU, basaltic sand, dunes, false color, Mars Odyssey, NASA, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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THEMIS: Arabia Terra crater dunes
THEMIS Image of the Day, February 27, 2019. This VIS image shows the floor of an unnamed crater in Arabia Terra. The peaks in the center of the crater floor were formed by the rebound of melted rock at the … Continue reading
Posted in Reports
Tagged Arabia Terra, Arizona State University, ASU, basaltic sand, false color, Mars Odyssey, NASA, sand, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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HiRISE: Sinuous ridge in Peraea Cavus
A sinuous ridge in Peraea Cavus. In addition to the ridge, there’s also bright deposits here. A cavus is an irregular steep-sided depression usually in arrays or clusters. HiRISE Picture of the Day archive [More at links]
Posted in Reports
Tagged dunes, High Resolution Imaging Science Experiment, HiPOD, HiRISE, HiRISE Picture of the Day, Mars Reconnaissance Orbiter, MRO, NASA, Peraea Cavus, sand dunes, sand ripples, sinuous ridge, University of Arizona
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THEMIS: Basaltic sands in Marth Crater
THEMIS Image of the Day, February 21, 2019. This false color image shows part of the floor of Marth Crater. Dark blue tones typically indicate basaltic sands. Wind action is blowing the sand and dust to the southern side of … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, basaltic sand, false color, Mars Odyssey, Marth Crater, NASA, sand, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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THEMIS: Pasteur Crater in false color
THEMIS Image of the Day, February 20, 2019. Today’s image shows part of the floor of Pasteur Crater. The deposit in the southwest part of the floor is a fill deposit that is undergoing erosion. Small sand dunes are found … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, basaltic sand, false color, Mars Odyssey, NASA, Pasteur Crater, sand, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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THEMIS: Herschel Crater floor in false color
THEMIS Image of the Day, February 19, 2019. This VIS image shows part of the floor of Herschel Crater. Sand dunes are visible at the bottom of the image. The dark blue in this false color image typically indicates basaltic … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, basaltic sand, dunes, false color, Herschel Crater, Mars Odyssey, NASA, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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THEMIS: Kaiser Crater dunes
THEMIS Image of the Day, February 15, 2019. This VIS image is located in Kaiser Crater and shows several individual dunes. These dunes’ dark tone suggests they are free of dust, hence active. With continued winds sand dunes will move … Continue reading
Posted in Reports
Tagged active dunes, Arizona State University, ASU, dunes, Kaiser Crater, Mars Odyssey, NASA, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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THEMIS: High-latitude dune field
THEMIS Image of the Day, February 14, 2019. Today’s VIS image shows a dune field on a crater floor in Terra Cimmeria. Dunes at high latitudes – near the polar caps – are affected by seasonal frost and ice. The … Continue reading
Posted in Reports
Tagged active dunes, dunes, dust devil tracks, sand, sand dunes, south polar region, Terra Cimmeria
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THEMIS: Sand sheet in Matara Crater
THEMIS Image of the Day, February 13, 2019. Today’s VIS image shows the sand deposit on the floor of Matara Crater. The deposit is thick enough to hide the underlying crater floor creating a sheet of sand. Upon this sheet … Continue reading
Posted in Reports
Tagged active dunes, Arizona State University, ASU, Mars Odyssey, Matara Crater, NASA, sand, sand dunes, sand sheets, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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HiRISE: Wind flow
The atmospheric pressure on Earth at sea level is about 1 bar. On Mars, the pressure is 6 to 10 millibars, or 1/100th that of our planet. But even in this atmosphere, wind still flows around obstacles. In this image … Continue reading
Posted in Reports
Tagged High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, sand dunes, sand ripples, University of Arizona, wind
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