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SwRI scientist captures evidence of dynamic seasonal activity on a Martian sand dune


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IMAGE: An SwRI-led study identifies plumes of airborne dust emanating from sources inside gullies at Mars Russell crater megadune in the Martian spring. The plume phenomena support the hypothesis that CO2.
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Credit: NASA/JPL/Malin Space Systems (CTX) & NASA/JPL/University of Arizona (HiRISE)]
SAN ANTONIO Feb. 24, 2021 A Southwest Research Institute® (SwRI®) scientist examined 11 Mars years of image data to understand the seasonal processes that create linear gullies on the slopes of the megadune in the Russell crater on Mars. In early spring images, captured by two different cameras on the Mars Reconnaissance Orbiter, SwRI s Dr. Cynthia Dinwiddie noticed airborne plumes of dusty material associated with the linear dune gullies on the sand dune s downwind slope. These clues point to active processes involving chunks of frozen CO2, or dry ice, sliding down the sand dune, kicking up sand and dust along the way. ....

Cynthia Dinwiddie , Tim Titus , Geophysical Research Letters , A Southwest Research Institute , Mars Data Analysis Program , Us Geological , Southwest Research Institute , Mars Reconnaissance Orbiter , Geophysical Research , Data Analysis Program , Dust Plumes Lofted , Dislodged Ice Blocks , Russell Crater , Space Planetary Science , Planets Moons , Satellite Missions Shuttles , Experiments In Space , சிந்தியா டின்விடி , நேரம் டைட்டஸ் , புவி இயற்பியல் ஆராய்ச்சி எழுத்துக்கள் , செவ்வாய் கிரகம் தகவல்கள் பகுப்பாய்வு ப்ரோக்ர்யாம் , எங்களுக்கு புவியியல் , தென்மேற்கு ஆராய்ச்சி நிறுவனம் , புவி இயற்பியல் ஆராய்ச்சி , தகவல்கள் பகுப்பாய்வு ப்ரோக்ர்யாம் , ரஸ்ஸல் பள்ளம் ,