Deuterium on Mars - The abundance of HDO and the value of D/H

Details Deuterium on Mars - The abundance of HDO and the value of D/H Deuterium on Mars - The abundance of HDO and the value of D/H

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988sci...240.1767o&link_type=abstract

Science (ISSN 0036-8075), vol. 240, June 24, 1988, p. 1767-1770.

Physics

129

Abundance, Deuterium, Heavy Water, Isotopic Enrichment, Line Spectra, Mars (Planet), Hydrogen, Mars Atmosphere, Mars Surface

Scientific paper

Deuterium on Mars has been detected by the resolution of several Doppler-shifted lines of HDO near 3.7 micrometers in the planet's spectrum. The ratio of deuterium to hydrogen is (9±4)×10-4; the abundance of H2O was derived from lines near 1.1 micrometers. This ratio is enriched on Mars over the telluric value by a factor of 6±3. The enrichment implies that hydrogen escaped more rapidly from Mars in the past than it does now, consistent with a dense and warm ancient atmosphere on the planet.

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