Evidence for recent climate change on Mars from the identification of youthful near-surface ground ice

@article{Mustard2001EvidenceFR,
  title={Evidence for recent climate change on Mars from the identification of youthful near-surface ground ice},
  author={John F. Mustard and Christopher D. Cooper and Moses K. Rifkin},
  journal={Nature},
  year={2001},
  volume={412},
  pages={411-414}
}
Ground ice in the crust and soil may be one of the largest reservoirs of water on Mars. Near-surface ground ice is predicted to be stable at latitudes higher than 40° (ref. 4), where a number of geomorphologic features indicative of viscous creep and hence ground ice have been observed. Mid-latitude soils have also been implicated as a water-ice reservoir, the capacity of which is predicted to vary on a 100,000-year timescale owing to orbitally driven variations in climate. It is uncertain… 
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