Article ; Online: Isotope ratios of H, C, and O in CO2 and H2O of the martian atmosphere.
2013 Volume 341, Issue 6143, Page(s) 260–263
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 ... ...
| 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 (18)O/(16)O in water and (13)C/(12)C, (18)O/(16)O, (17)O/(16)O, and (13)C(18)O/(12)C(16)O 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. |
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| Language | English | ||||||||||
| Publishing date | 2013-07-19 | ||||||||||
| Publishing country | United States | ||||||||||
| Document type | Journal Article ; Research Support, U.S. Gov't, Non-P.H.S. | ||||||||||
| ZDB-ID | 128410-1 | ||||||||||
| ISSN | 1095-9203 ; 0036-8075 | ||||||||||
| ISSN (online) | 1095-9203 | ||||||||||
| ISSN | 0036-8075 | ||||||||||
| DOI | 10.1126/science.1237961 | ||||||||||
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| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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