Encyclopedia of Planetary Landforms

2015 Edition
| Editors: Henrik Hargitai, Ákos Kereszturi

Residual South Polar Cap Features

Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-3134-3_411

Definition

Steep-sided depressions, which may occur in groups and may form characteristic patterns, in the south polar ice cap of Mars.

Description

Circular and elongate depressions and sags (Malin and Edgett 2001) showing flat floors and steeply sided walls, commonly with debris aprons. These depressions are superposed on water ice-rich materials, probably the upper surface of the polar-layered deposits of the southern permanent polar cap of Mars (Mangold 2011).

Subtypes

Morphological Subtypes of Depressions

  1. (1)

    Moats or moat-like depressions of diverse shape around round depressions and mesas (this is called the geological Unit B, as defined by Thomas 2003; Fig. 1).

     
  2. (2)

    Fingerprint terrain: sets of linear depressions (troughs) (Unit A2) (Thomas et al. 2000; Thomas 2003) showing parallel and tuning-fork patterns (Fig. 2). They are restricted to limited areas; consistent trends in their orientation suggest structural control. These depressions are typically 60–120 m across (Thomas...

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References

  1. Byrne S, Ingersoll AP (2003a) A sublimation model for Martian south polar features. Science 299:1051–1053CrossRefGoogle Scholar
  2. Byrne S, Ingersoll AP (2003b) Martian climatic events on timescales of centuries: evidence from feature morphology in the residual south polar ice cap. Geophys Res Lett 30(13):1696. doi:10.1029/2003GL017597CrossRefGoogle Scholar
  3. Byrne S, Zuber MT (2006) Landscape evolution and the reincarnation of the southern residual ice cap. In: Fourth Mars polar science conference #8035, DavosGoogle Scholar
  4. James PB, Kieffer HH, Paige DA (1992) The seasonal cycle of carbon dioxide on Mars. In: Jakosky BM, Snyder CW, Mathews MS, Kieffer HH (eds) Mars. University of Arizona Press, Tucson, pp 934–968Google Scholar
  5. Malin MC, Edgett KS (2001) Mars global surveyor Mars Orbiter Camera: interplanetary cruise through primary mission. J Geophys Res 106(E10):23429–23570. doi:10.1029/2000JE001455CrossRefGoogle Scholar
  6. Malin MC, Caplinger MA, Davis SD (2001) Observational evidence for an active surface reservoir of solid carbon dioxide on Mars. Science 294:2146–2148CrossRefGoogle Scholar
  7. Mangold N (2005) High latitude patterned grounds on Mars: classification, distribution and climatic control. Icarus 174:336–359CrossRefGoogle Scholar
  8. Mangold N (2011) Ice sublimation as a geomorphic process: a planetary perspective. Geomorphology 126:1–17CrossRefGoogle Scholar
  9. Phillips RJ, Davis BJ, Tanaka KL, Byrne S, Mellon MT, Putzig NE et al (2011) Massive CO2 ice deposits sequestered in the south polar layered deposits of Mars. Science 332:838–841CrossRefGoogle Scholar
  10. Plaut JJ et al (2007) Subsurface radar sounding of the South Polar layered deposits of Mars. Science 316(5821):92–95CrossRefGoogle Scholar
  11. Thomas PC (2003) The South Polar residual cap of Mars: landforms and stratigraphy. In: Sixth international conference on Mars, Pasadena, California, #3058Google Scholar
  12. Thomas PC, Malin MC, Edgett KS, Carr MH, Hartmann WK, Ingersoll AP, James PB, Soderblom LA, Veverka J, Sullivan R (2000) North–south geological differences between the residual polar caps on Mars. Nature 404:161–164. doi:10.1038/35004528CrossRefGoogle Scholar
  13. Thomas PC, Malin MC, James PB, Cantor BA, Williams RME, Gierasch P (2005) South polar residual cap of Mars: features, stratigraphy, and changes. Icarus 174:535–559CrossRefGoogle Scholar
  14. Thomas PC, James PB, Calvin WM, Haberle R, Malin MC (2009) Residual south polar cap of Mars: stratigraphy, history, and implications of recent changes. Icarus 203(2):352–375CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.NASA Ames Research Center/NPPMoffett FieldUSA