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A revised surface age for the North Polar Layered Deposits of Mars

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Margaret E. Landis, Shane Byrne, Ingrid J. Daubar, Kenneth E. Herkenhoff, and Colin M. Dundas, 2016, A revised surface age for the North Polar Layered Deposits of Mars: Geophysical Research Letters, v. 43, iss. 7.

Summary

The North Polar Layered Deposits (NPLD) of Mars contain a complex stratigraphy that has been suggested to retain a record of past eccentricity- and obliquity-forced climate changes. The surface accumulation rate in the current climate can be constrained by the crater retention age. We scale NPLD crater diameters to account for icy target strength and compare surface age using a new production function for recent small impacts on Mars to the previously used model of Hartmann (2005). Our results indicate that ice is accumulating in these craters several times faster than previously thought, with a 100 m diameter crater being completely infilled within centuries. Craters appear to have a diameter-dependent lifetime, but the data also [...]

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Type Scheme Key
local-index unknown 70188271
local-pk unknown 70188271
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.1002/2016GL068434
series unknown Geophysical Research Letters

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journalGeophysical Research Letters
parts
typevolume
value43
typeissue
value7
languageEnglish
citationTypeArticle

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