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Tag Archives: cataracts
HiRISE: Erosion within Cerberus Fossae
A Context Camera image shows a small bench in the middle of the Cerberus Fossae at the head of Athabasca Valles. Small cataracts appear on this bench. Do these reflect erosion as water drained back into the subsurface at the … Continue reading
Posted in Reports
Tagged Athabasca Valles, Beautiful Mars, cataracts, catastrophic floods, Cerberus Fossae, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, University of Arizona
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HiRISE: Cataracts in Kasei Valles
Obviously these are not the kind of cataracts that can develop in the lenses of your eyes, but large erosional scallops that form in river channels, like the Niagara Falls draining the Great Lakes of North America. Cataracts are large … Continue reading
Posted in Reports
Tagged cataracts, fluvial channels, fluvial deposits, fluvial erosion, fluvial landforms, fluvial processes, High Resolution Imaging Science Experiment, HiRISE, Kasei Valles, Mars Reconnaissance Orbiter, MRO, NASA, University of Arizona
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Karun Valles & its braided alluvial fan
Planetary Geomorphology Image of the Month, September 29, 2016: Solmaz Adeli (DLR, Institute of Planetary Research, Berlin). The Amazonian period on Mars, meaning roughly the last 3 Ga, is globally believed to have been cold and hyperarid [e.g., Marchant and … Continue reading
Posted in Reports
Tagged alluvial fan deposits, alluvial fans, Ariadnes Colles, cataracts, fluvial channels, fluvial deposits, fluvial erosion, fluvial landforms, Karun Valles, streamlined islands, Terra Cimmeria
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HiRISE: At the head of a Kasei Valles cataract
On Earth, cataracts represent regions where a river’s gradient increases enough to create so much turbulence, that air gets incorporated into the water body forming a bubbly current sometimes called “whitewater”. This image covers a location that may have acted … Continue reading
Posted in Reports
Tagged cataracts, High Resolution Imaging Science Experiment, HiRISE, Kasei Valles, Mars Reconnaissance Orbiter, MRO, NASA, outflow channels, University of Arizona
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