publication . Article . 2015

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

Geronimo L. Villanueva; Michael J. Mumma; Robert E. Novak; H. U. Kaufl; Paul Hartogh; Th. Encrenaz; Alan T. Tokunaga; A. S. J. Khayat; Michael D. Smith;
Open Access English
  • Published: 09 Apr 2015
  • Publisher: HAL CCSD
  • Country: France
Abstract
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 to be estimated and thus could be used to reveal past climate behavior. Science, this issue p. 218 We measured maps of atmospheric water (H2O) and its deuterated form (HD...
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free text keywords: [PHYS]Physics [physics], [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Multidisciplinary, Martian, Deuterium, Vienna Standard Mean Ocean Water, Mars Exploration Program, Atmosphere, Atmospheric sciences, Heavy water, chemistry.chemical_compound, chemistry, Atmosphere of Mars, Orographic lift, Geology
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