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

descriptionPublicationkeyboard_double_arrow_right Article 10 Apr 2015 France English Publisher:American Association for the Advancement of Science (AAAS)Journal:Science, volume 348, pages 218-221 (issn: 0036-8075, eissn: 1095-9203,

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Authors: Villanueva, G.; Mumma, M.; Novak, R.; Kaufl, H.; Hartogh, P.; Encrenaz, T.; Tokunaga, A.; +2 Authors

doi: 10.1126/science.aaa3630

pmid: 25745065

handle: 11858/00-001M-0000-0026-C8B3-9

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

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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 H 2 O 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

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France

Related Organizations

French National Centre for Scientific Research
France
PSL Research University
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Goddard Space Flight Center
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University of Hawaii at Manoa
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Sorbonne University
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Keywords

[PHYS]Physics [physics], HERSCHEL, Extraterrestrial Environment, Atmosphere, Ice, Mars, Water, 540, Deuterium, [PHYS] Physics [physics], Deuterium Oxide, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], [PHYS.ASTR] Physics [physics]/Astrophysics [astro-ph], Evolution, Planetary

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