Ground-based IR observation of oxygen isotope ratios in Venus's atmosphere

N. Iwagami, Joji Hashimoto, S. Ohtsuki, S. Takagi, S. Robert

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Abstract The oxygen isotope ratios 17O/16O and 18O/16O in Venus's atmosphere were measured simultaneously by ground-based IR spectroscopy. The CO2 absorption lines in the 2648 cm-1 (for 17O/18O) and 4582 cm-1 (for 18O/16O) regions were observed using the IRTF/CSHELL spectrometer. The deviations of the isotope fractions are found to be δ17O=+92±158‰ and δ18O=-42±85‰as compared to the terrestrial standard (HITRAN 2012) where the uncertainties include both random and systematic errors. Such combination agrees with the Earth-Moon fractionation line within the errors. This is consistent to the fact that the proto-Venus matter was also well mixed with the proto-Earth-Moon matter.

Original languageEnglish
Article number3830
Pages (from-to)292-297
Number of pages6
JournalPlanetary and Space Science
Volume113-114
DOIs
Publication statusPublished - Aug 1 2015

Fingerprint

Venus atmosphere
oxygen isotope ratio
oxygen isotopes
isotope ratios
moon
Venus
Moon
random errors
atmosphere
Venus (planet)
fractionation
systematic errors
spectrometer
isotopes
spectroscopy
isotope
spectrometers
deviation

Keywords

  • Ground-based
  • IR spectroscopy
  • Oxygen isotope
  • Venus atmosphere

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Ground-based IR observation of oxygen isotope ratios in Venus's atmosphere. / Iwagami, N.; Hashimoto, Joji; Ohtsuki, S.; Takagi, S.; Robert, S.

In: Planetary and Space Science, Vol. 113-114, 3830, 01.08.2015, p. 292-297.

Research output: Contribution to journalArticle

Iwagami, N. ; Hashimoto, Joji ; Ohtsuki, S. ; Takagi, S. ; Robert, S. / Ground-based IR observation of oxygen isotope ratios in Venus's atmosphere. In: Planetary and Space Science. 2015 ; Vol. 113-114. pp. 292-297.
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AU - Hashimoto, Joji

AU - Ohtsuki, S.

AU - Takagi, S.

AU - Robert, S.

PY - 2015/8/1

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N2 - Abstract The oxygen isotope ratios 17O/16O and 18O/16O in Venus's atmosphere were measured simultaneously by ground-based IR spectroscopy. The CO2 absorption lines in the 2648 cm-1 (for 17O/18O) and 4582 cm-1 (for 18O/16O) regions were observed using the IRTF/CSHELL spectrometer. The deviations of the isotope fractions are found to be δ17O=+92±158‰ and δ18O=-42±85‰as compared to the terrestrial standard (HITRAN 2012) where the uncertainties include both random and systematic errors. Such combination agrees with the Earth-Moon fractionation line within the errors. This is consistent to the fact that the proto-Venus matter was also well mixed with the proto-Earth-Moon matter.

AB - Abstract The oxygen isotope ratios 17O/16O and 18O/16O in Venus's atmosphere were measured simultaneously by ground-based IR spectroscopy. The CO2 absorption lines in the 2648 cm-1 (for 17O/18O) and 4582 cm-1 (for 18O/16O) regions were observed using the IRTF/CSHELL spectrometer. The deviations of the isotope fractions are found to be δ17O=+92±158‰ and δ18O=-42±85‰as compared to the terrestrial standard (HITRAN 2012) where the uncertainties include both random and systematic errors. Such combination agrees with the Earth-Moon fractionation line within the errors. This is consistent to the fact that the proto-Venus matter was also well mixed with the proto-Earth-Moon matter.

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