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)
Residual lags. They are depleted in ice, resulting from sublimation loss. They are underlied by ice-rich material.
- (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 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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Mangold, N. (2014). Sublimation Landforms. In: Encyclopedia of Planetary Landforms. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-9213-9_552-1
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DOI: https://doi.org/10.1007/978-1-4614-9213-9_552-1
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