Reconciling different observations of the CO2 ice mass loading of the Martian north polar cap

Geophysical Research Letters
By: , and 

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Abstract

The GRS measurements of the peak mass loading of the north polar CO2 ice cap on Mars are about 60% lower than those calculated from MGS TES radiation data and those inferred from the MOLA cap thicknesses. However, the GRS data provide the most accurate measurement of the mass loading. We show that the TES and MOLA data can be reconciled with the GRS data if (1) subsurface heat conduction and atmospheric heat transport are included in the TES mass budget calculations, and (2) the density of the polar deposits is ∼600 kg m−3. The latter is much less than that expected for slab ice (∼1600 kg m−3) and suggests that processes unique to the north polar region are responsible for the low cap density.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Reconciling different observations of the CO2 ice mass loading of the Martian north polar cap
Series title Geophysical Research Letters
DOI 10.1029/2004GL019445
Volume 31
Issue 5
Year Published 2004
Language English
Publisher American Geophysical Union
Publisher location Washington, D.C.
Contributing office(s) Astrogeology Science Center
Description 4 p.
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Geophysical Research Letters
Other Geospatial Mars
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