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Mars Atmospheric Escape Recorded by H, C and O Isotope Ratios in Carbon Dioxide and Water Measured by the Sam Tunable Laser Spectrometer on the Curiosity RoverStable isotope ratios in C, H, N, O and S are powerful indicators of a wide variety of planetary geophysical processes that can identify origin, transport, temperature history, radiation exposure, atmospheric escape, environmental habitability and biological activity [2]. For Mars, measurements to date have indicated enrichment in all the heavier isotopes consistent with atmospheric escape processes, but with uncertainty too high to tie the results with the more precise isotopic ratios achieved from SNC meteoritic analyses. We will present results to date of H, C and O isotope ratios in CO2 and H2O made to high precision (few per mil) using the Tunable Laser Spectrometer (TLS) that is part of the Sample Analysis at Mars (SAM) instrument suite on MSL s Curiosity Rover.
Document ID
20130011105
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Webster, C. R. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Mahaffy, P. R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Leshin, L. A. (Rensselaer Polytechnic Inst. Troy, NY, United States)
Atreya, S. K. (Michigan Univ. MI, United States)
Flesch, G. J. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Stern, J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Christensen, L. E. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Vasavada, A. R. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Owen, T. (Hawaii Univ. Honolulu, HI, United States)
Niles, P. B. (NASA Johnson Space Center Houston, TX, United States)
Jones, J. H. (Arizona Univ. Tucson, AZ, United States)
Franz, H. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 27, 2013
Publication Date
March 18, 2013
Subject Category
Lunar And Planetary Science And Exploration
Report/Patent Number
JSC-CN-28080
Meeting Information
Meeting: Lunar aud Plauetary Science Conference
Location: The Woodlands, TX
Country: United States
Start Date: March 18, 2013
End Date: March 22, 2013
Distribution Limits
Public
Copyright
Public Use Permitted.

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