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  • Title: An ice age recorded in the polar deposits of Mars.
    Author: Smith IB, Putzig NE, Holt JW, Phillips RJ.
    Journal: Science; 2016 May 27; 352(6289):1075-8. PubMed ID: 27230372.
    Abstract:
    Layered ice deposits at the poles of Mars record a detailed history of accumulation and erosion related to climate processes. Radar investigations measure these layers and provide evidence for climate changes such as ice advance and retreat. We present a detailed analysis of observational data showing that ~87,000 cubic kilometers of ice have accumulated at the poles since the end of the last ice age ~370,000 years ago; this volume is equivalent to a global layer of ~60 centimeters. The majority of the material accumulated at the north pole. These results provide both a means to understand the accumulation history of the polar deposits as related to orbital Milankovitch cycles and constraints for better determination of Mars' past and future climates.
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