Encyclopedia of Planetary Landforms

2015 Edition
| Editors: Henrik Hargitai, Ákos Kereszturi

Dark Dune Features

  • Ganna Portyankina
  • Ákos Kereszturi
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-3134-3_96


Strictly seasonal dark features observed during local spring on defrosting circumpolar dunes at the presence of the seasonal CO2 ice layer on Mars.


Low-albedo features on the seasonal frost cover of the dark circumpolar dunes on Mars. Dark dune spots are associated with dark diffuse, typically fan-shaped features; dark polygonal features typically on stoss sides; dark streaks typically on the lee sides, and dark or bright linear features on dune crests (Fig. 1).
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© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Laboratory for Atmospheric and Space PhysicsUniversity of Colorado BoulderBoulderUSA
  2. 2.Konkoly Thege Miklos Astronomical InstituteResearch Centre for Astronomy and Earth SciencesBudapestHungary