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Tag Archives: periglacial processes
HiRISE: Two flows
Two flows. The objective of this observation is to examine two flows near the base of a mound. There seem to be a number of flows like these in the region. Reull Vallis is believed to have formed when running … Continue reading
HiRISE: A fresh crater in periglacial terrain
A fresh crater in periglacial terrain. This appears to be a relatively fresh crater in what is called periglacial terrain. Could any changes in the surface be related to ice? (Periglacial refers to an area adjacent to a glacier or … Continue reading
Posted in Reports
Tagged fresh craters, High Resolution Imaging Science Experiment, HiPOD, HiRISE, HiRISE Picture of the Day, Mars Reconnaissance Orbiter, MRO, NASA, periglacial processes, periglacial terrain, University of Arizona
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THEMIS: Rough ground in Nilosyrtis
THEMIS Image of the Day, June 11, 2019. Today’s VIS image is located on the margin of the Terra Sabaea highlands and the Nilosyrtis Mensae lowlands. The drop off is very steep – about 18,000 ft. This “edge” circles the … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, crustal dichotomy, glacial deposits, Mars Odyssey, NASA, Nilosyrtis Mensae, periglacial processes, rock glaciers, Terra Sabaea, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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HiRISE: Mounds in depressions in Deuteronilus Mensae
Mounds in depressions in Deuteronilus Mensae. The objective of this observation is to determine the nature of round mounds in depressions. The depressions may be part of the ribbed upper plains unit. Some of the edges of the depressions are … Continue reading
Posted in Reports
Tagged Deuteronilus Mensae, High Resolution Imaging Science Experiment, HiPOD, HiRISE, HiRISE Picture of the Day, ice mounds, Mars Reconnaissance Orbiter, mounds, MRO, NASA, periglacial processes, periglacial terrain, University of Arizona
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HiRISE: Quite smoooooth
Quite smoooooth. Here in Deuteronilus Mensae, there is a smooth geologic unit overlying plains material. There are also slightly convex-up edges, polygonal patterns on the surface, and softened craters. HiRISE Picture of the Day archive. [More at links]
HiRISE: The slow charm of brain terrain
You are staring at one of the unsolved mysteries on Mars. This surface texture of interconnected ridges and troughs, referred to as “brain terrain” is found throughout the mid-latitude regions of Mars. (This image is in Protonilus Mensae.) This bizarrely … Continue reading
Posted in Reports
Tagged brain terrain, glacial deposits, ground ice, High Resolution Imaging Science Experiment, HiRISE, ice, Mars Reconnaissance Orbiter, MRO, NASA, periglacial processes, periglacial terrain, Protonilus Mensae, University of Arizona
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The banded terrain on Mars
Planetary Geomorphology Image of the Month, March 1, 2019: Hannes Bernhardt (Arizona State University). An article on the banded terrain cannot be commenced by a traditional definition, as it appears to be a truly singular occurrence in the Solar System. … Continue reading
Posted in Reports
Tagged banded terrain, glaciers, Hellas Planitia, periglacial processes, viscous flow features
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HiRISE: Gullies and crevasses on a mesa
Gullies and crevasses on a mesa. Beautiful Mars series. [More at links]
Posted in Reports
Tagged Beautiful Mars, Deuteronilus Mensae, ground ice, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, periglacial processes, periglacial terrain, University of Arizona
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HiRISE: Crater in the aureole of Pavonis Mons
A crater in the aureole of Pavonis Mons. This is an unusual crater in the Pavonis Mons aureole, possibly a glacial deposit. It appears to have secondaries or textured ejecta (sign of freshness), but is mostly infilled. It also has … Continue reading
Posted in Reports
Tagged Beautiful Mars, High Resolution Imaging Science Experiment, HiRISE, impact craters, Mars Reconnaissance Orbiter, MRO, NASA, Pavonis Mons, Pavonis Mons aureole, periglacial processes, periglacial terrain, University of Arizona
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