Strong water isotopic anomalies in the martian atmosphere: Probing current and ancient reservoirs

  title={Strong water isotopic anomalies in the martian atmosphere: Probing current and ancient reservoirs},
  author={Geronimo L. Villanueva and Michael J. Mumma and Robert E. Novak and Hans Ulrich K{\"a}ufl and Paul Hartogh and Thérèse Encrenaz and Alan T. Tokunaga and Alain S. J. Khayat and M. D. Smith},
  pages={218 - 221}
Mapping Mars' water history We know the water cycle on Earth is complex. Neither is it simple on Mars. Infrared maps of water isotopes made by Villanueva et al. show the distribution of H2O and “semiheavy” water (HDO: deuterated water containing a mixture of hydrogen isotopes) across Mars. HDO enrichment varies with time and location; for example, irregular isotopic signals associate with different terrain features. The measurements also allow seasonal sublimation levels of the northern ice cap… 
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