Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Science. 1991 Feb 1;251:547-9.

Deuterium on Venus: observations from Earth.

Author information

  • 1D├ępartement de Recherche Spatiale, Observatoire de Paris, Meudon, France.
  • 2U Hawaii, Honolulu, Inst for Astronomy

Abstract

Absorption lines of HDO and H2O have been detected in a 0.23-wave number resolution spectrum of the dark side of Venus in the interval 2.34 to 2.43 micrometers, where the atmosphere is sounded in the altitude range from 32 to 42 kilometers (8 to 3 bars). The resulting value of the deuterium-to-hydrogen ratio (D/H) is 120 +/- 40 times the telluric ratio, providing unequivocal confirmation of in situ Pioneer Venus mass spectrometer measurements that were in apparent conflict with an upper limit set from International Ultraviolet Explorer spectra. The 100-fold enrichment of the D/H ratio on Venus compared to Earth is thus a fundamental constraint on models for its atmospheric evolution.

PMID:
11538265
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Icon for HighWire
    Loading ...
    Write to the Help Desk