Subsurface ocean argon disequilidrium reveals the equatorial Pacific shadow zone

Eric Gehrie, David Archer, Steven Emerson, Charles Stump, Cara Henning

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Surface water in the ocean invades the subsurface vertically, against the density gradient, and along constant-density surfaces from surface outcrops in high latitudes. We present dissolved argon data that distinguishes a diapycnally ventilated upper thermocline in the equatorial Pacific versus an isopycnally ventilated subtropical location near Hawaii. The lower thermocline is shown to be isopycnally ventilated at both locations, in contrast with theoretical and model predictions.

Original languageEnglish (US)
Article numberL18608
JournalGeophysical Research Letters
Issue number18
StatePublished - Sep 28 2006
Externally publishedYes

ASJC Scopus subject areas

  • Geophysics
  • General Earth and Planetary Sciences


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