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

N. Iwagami, G.L. Hashimoto, S. Ohtsuki, S. Takagi, S. Robert

Planetary and Space Science
available online 12 November 2014


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.

Correlation plot of δ17O and δ18O in Earth-Moon, Mars and Venus