Encyclopedia of Planetary Landforms

2015 Edition
| Editors: Henrik Hargitai, Ákos Kereszturi

Sublimation Landforms

Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-3134-3_552

Definition

Landform due to the sublimation of any ice at the surface or in the subsurface.

Category

A type of  thermokarst landforms.

Morphometry

Pits can exist from the millimeter scale to the kilometer scale. Depend on depth and thickness of ice and temperature variations of the ground.

Subtypes

Subtypes suggested as independent of planetary body (Mangold 2011):
  1. (1)

    Residual lags. They are depleted in ice, resulting from sublimation loss. They are underlain by ice-rich material.

     
  2. (2)

    Landforms produced by differential sublimation due to albedo differences. Low-albedo material is heated and experiences more intensive sublimation than high-albedo regions that are cooler and preserve ice, leaving a dark lag deposit that will protect the underlying dark ice. Volatiles ice removed from dark regions are redeposited onto clean ice as frost. This process enhances albedo contrast between dirty and clean ice (Prockter et al. 1998; Mangold 2011). This process characteristically occurs on icy...

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References

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Laboratoire de Planétologie et Géodynamique de NantesUniversité de Nantes/CNRSNantesFrance