Isotope ratios of H, C, and O in CO2 and H2O of the Martian atmosphere

Webster, Chris R., Mahaffy, Paul R., Flesch, Gregory J., Niles, Paul B., Jones, John H., Leshin, Laurie A., Atreya, Sushil K., Stern, Jennifer C., Christensen, Lance E., Owen, Tobias, Franz, Heather, Pepin, Robert O., Steele, Andrew, MSL Science Team and Vasconcelos, Paulo (2013) Isotope ratios of H, C, and O in CO2 and H2O of the Martian atmosphere. Science, 341 6143: 260-263. doi:10.1126/science.1237961

Author Webster, Chris R.
Mahaffy, Paul R.
Flesch, Gregory J.
Niles, Paul B.
Jones, John H.
Leshin, Laurie A.
Atreya, Sushil K.
Stern, Jennifer C.
Christensen, Lance E.
Owen, Tobias
Franz, Heather
Pepin, Robert O.
Steele, Andrew
MSL Science Team
Vasconcelos, Paulo
Title Isotope ratios of H, C, and O in CO2 and H2O of the Martian atmosphere
Formatted title
Isotope ratios of H, C, and O in CO2 and H2O of the Martian atmosphere
Journal name Science   Check publisher's open access policy
ISSN 0036-8075
Publication date 2013-07-19
Sub-type Article (original research)
DOI 10.1126/science.1237961
Open Access Status Not yet assessed
Volume 341
Issue 6143
Start page 260
End page 263
Total pages 4
Place of publication Washington, DC, United States
Publisher American Association for the Advancement of Science
Formatted abstract
Stable isotope ratios of H, C, and O are powerful indicators of a wide variety of planetary geophysical processes, and for Mars they reveal the record of loss of its atmosphere and subsequent interactions with its surface such as carbonate formation. We report in situ measurements of the isotopic ratios of D/H and 18O/16O in water and 13C/12C, 18O/16O, 17O/16O, and 13C18O/12C16O in carbon dioxide, made in the martian atmosphere at Gale Crater from the Curiosity rover using the Sample Analysis at Mars (SAM)’s tunable laser spectrometer (TLS). Comparison between our measurements in the modern atmosphere and those of martian meteorites such as ALH 84001 implies that the martian reservoirs of CO2 and H2O were largely established ~4 billion years ago, but that atmospheric loss or surface interaction may be still ongoing.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Earth Sciences Publications
Official 2014 Collection
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Citation counts: TR Web of Science Citation Count  Cited 86 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 86 times in Scopus Article | Citations
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Created: Thu, 13 Feb 2014, 01:50:28 EST by Jon Swabey on behalf of School of Earth Sciences