Gas transfer velocities for SF6 and ³He in a small pond at low wind speeds

Jordan F. Clark, Peter Schlosser, Rik Wanninkhof, H. James Simpson, William S.F. Schuster, David T. Ho

Research output: Contribution to journalArticle

41 Scopus citations

Abstract

Gas transfer velocities for two gases, SF6 (sulfur hexafluoride) and ³He, were determined in a small pond by injecting a mixture of these gases into the water and monitoring the decline of their concentrations over the next eight days. For wind speeds between 1.5–2.5 m s−1, no variations of gas transfer velocity with wind speed could be resolved with our data. Gas transfer velocities at wind speeds greater than 3 m s−1 were substantially larger and consistent with other lake tracer experiments. From the ratio of gas transfer velocities for SF6 and 3He we calculated the Schmidt number exponent to be 0.57±0.07.

Original languageEnglish (US)
Pages (from-to)93-96
Number of pages4
JournalGeophysical Research Letters
Volume22
Issue number2
DOIs
StatePublished - Jan 15 1995
Externally publishedYes

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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