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Tag Archives: sand
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: 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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THEMIS: Dunes and dust devil tracks in Terra Cimmeria
THEMIS Image of the Day, January 30, 2019. This unnamed crater in Terra Cimmeria has both a sand sheet with dune forms and a multitude of dust devil tracks. The linear and scalloped dark marks are created by dust devils … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, dust devil tracks, Mars Odyssey, NASA, sand, sand dunes, Terra Cimmeria, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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THEMIS: Active dune field in Noachis
THEMIS Image of the Day, December 13, 2018. Today’s VIS image shows sand dunes on the floor of an unnamed crater in Noachis Terra. These dunes are likely active because they are dark, indicating that they move often enough to … Continue reading
Posted in Reports
Tagged active dunes, Arizona State University, ASU, basaltic sand, Mars Odyssey, mid-latitude mantling, NASA, Noachis Terra, sand, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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HiRISE: Summit dunes and their sand sources
The ultimate origin of the sediment that forms Martian dunes has long been debated. While sand dunes on Earth are primarily sourced by quartz-bearing components of granitic continental crust, it’s often suggested that sand on Mars derives from eroded volcanic … Continue reading
Posted in Reports
Tagged High Resolution Imaging Science Experiment, HiRISE, Juventae Chasma, Mars Reconnaissance Orbiter, MRO, NASA, sand, sand dunes, University of Arizona
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THEMIS: North polar dunes meet Escorial Crater
THEMIS Image of the Day, September 25, 2018. At the bottom of this image is Escorial Crater. The dune field to the north are called Hyperboreae Undae. The subtle blue and yellow arcs over the crater are clouds. The THEMIS … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, Escorial Crater, Hyperboreae Undae, Mars Odyssey, NASA, north polar sand sea, sand, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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Bagnold Dunes sand movement observed by Curiosity
[Editor’s note: From a paper by Mariah Baker and nine co-authors recently published in Geophysical Research Letters.] The Bagnold Dunes in Southern Summer: Active Sediment Transport on Mars Observed by the Curiosity Rover • Curiosity’s imaging campaigns in the Bagnold … Continue reading
Posted in Reports
Tagged active dunes, Bagnold Dunes, Cape Elizabeth, Curiosity, Dorr Mountain, Gale Crater, Mapleton, Mars Science Laboratory, MSL, NASA, Ogunquit Beach, Precipice, sand, sand dunes, Sandy Point Beach, Southern Cove
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THEMIS: Dunes of Moreux Crater
THEMIS Image of the Day, July 31, 2018. Today’s VIS image shows part of the floor of Moreux Crater. Sand dunes are found in this region of the crater floor. Moreux Crater is located on the northern margin of Terra … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, Mars Odyssey, Moreux Crater, NASA, sand, sand dunes, Terra Sabaea, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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