Constraints on mantle 3He fluxes and deep-sea circulation from an oceanic general circulation model

K. A. Farley, E. Maier-Reimer, P. Schlosser, W. S. Broecker

Research output: Contribution to journalArticle

88 Scopus citations

Abstract

The steady-state distribution of helium in the deep sea has been simulated to investigate the magnitude and spatial and temporal variability of mantle degassing and to characterize deep-sea circulation and ventilation. The simulation was produced by linking a simple source function for helium injected at mid-ocean ridges with an oceanic general circulation model (GCM). While the results generally support the GCM's abyssal circulation, the simulation reveals regions of overly-intense lateral diffusion and upwelling in the model, particularly in the equatorial Pacific. Similarly, there appears to be insufficient production of He-ventilated bottom waters in the model Antarctic. These observations suggest that further refinement of the GCM abyssal circulation is required. -from Authors

Original languageEnglish (US)
Pages (from-to)3829-3839
Number of pages11
JournalJournal of geophysical research
Volume100
Issue numberB3
DOIs
StatePublished - Jan 1 1995

ASJC Scopus subject areas

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

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