Recent ice-rich deposits formed at high latitudes on Mars by sublimation of unstable equatorial ice during low obliquity

  title={Recent ice-rich deposits formed at high latitudes on Mars by sublimation of unstable equatorial ice during low obliquity},
  author={Benjamin Levrard and François Forget and Franck Montmessin and Jacques Laskar},
Observations from the gamma-ray spectrometer instrument suite on the Mars Odyssey spacecraft have been interpreted as indicating the presence of vast reservoirs of near-surface ice in high latitudes of both martian hemispheres. Ice concentrations are estimated to range from 70 per cent at 60° latitude to 100 per cent near the poles, possibly overlain by a few centimetres of ice-free material in most places. This result is supported by morphological evidence of metres-thick layered deposits that… 


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Orbital forcing of the martian polar layered deposits

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

Observational evidence for a mid-latitude reservoir of near-surface water ice occupying the pore space of soils is reported and it is inferred that the reservoir was created during the last phase of high orbital obliquity less than 100,000 years ago, and is now being diminished.

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