The effect of a localized geothermal heat source on deep water formation

M. Vincze, A. Várai, E. Barsy, I. M. Jánosi

Research output: Article

1 Citation (Scopus)

Abstract

In a simplified two-dimensional model of a buoyancy-driven overturning circulation, we numerically study the response of the flow to a small localized heat source at the bottom. The flow is driven by differential thermal forcing applied along the top surface boundary. We evaluate the steady state solutions versus the temperature difference between the two ends of the water surface in terms of different characteristic parameters that properly describe the transition from a weak upper-layer convection state to a robust full-depth deep convection. We conclude that a small additional bottom heat flux underneath the "cold" end of the basin is able to initiate full-depth convection even when the surface heat forcing alone is not sufficient to maintain this state.

Original languageEnglish
Pages (from-to)841-847
Number of pages7
JournalNonlinear Processes in Geophysics
Volume18
Issue number6
DOIs
Publication statusPublished - nov. 22 2011

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ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Geophysics
  • Geochemistry and Petrology

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