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Tag Archives: dunes
Winds of Jezero Crater
[Editor’s note: From a paper by Mackenzie Day and Taylor Dorn recently published in Geophysical Research Letters.] Wind in Jezero crater, Mars • Modern winds in Jezero crater come from the east, but ancient winds came from the southwest • … Continue reading
Posted in Reports
Tagged dunes, eolian processes, Jezero Crater, M2020, Mars 2020, Mars 2020 rover, sand dunes, TARs, transverse eolian ridges, wind streaks, yardangs
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HiRISE: Surface texture
Surface texture. Interesting how the dune ripples within these shallow craters all seem to have a similar orientation. This image is within a crater in the Arabia Terra region. HiRISE Picture of the Day archive [More at links]
Posted in Reports
Tagged Arabia Terra, dunes, High Resolution Imaging Science Experiment, HiPOD, HiRISE, HiRISE Picture of the Day, Mars Reconnaissance Orbiter, MRO, NASA, regolith, rocks, sand dunes, University of Arizona
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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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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: 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: Noachis crater dunes
THEMIS Image of the Day, February 8, 2019. Sand dunes cover part of the floor of this unnamed crater in Noachis Terra. Their dark tint suggests they are relatively free of light-toned dust, hence probably active under winds currently. See … Continue reading
Posted in Reports
Tagged active dunes, Arizona State University, ASU, dunes, Mars Odyssey, NASA, Noachis Terra, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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HiRISE: A dune field near Nili Patera
In this image many sand dunes are visible. They have an elongated crescent form and are called “barchan dunes.” They are formed by the continuous action of the wind, blowing in the same direction, giving this particular shape. The orientation … Continue reading
Posted in Reports
Tagged dune field, dunes, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, sand dunes, University of Arizona
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THEMIS: Dune swirl in Terra Cimmeria
THEMIS Image of the Day, February 6, 2019. Sand dunes cover part of the floor of this unnamed crater in Terra Cimmeria. See more THEMIS Images of the Day by geological subject.
Posted in Reports
Tagged active dunes, Arizona State University, ASU, dunes, dust devil tracks, Mars Odyssey, NASA, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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