Encyclopedia of Solid Earth Geophysics

Living Edition
| Editors: Harsh K. Gupta

Heat Flow, Seafloor: Methods and Observations

  • Earl E. DavisEmail author
  • Andrew T. Fisher
Living reference work entry
DOI: https://doi.org/10.1007/978-3-030-10475-7_65-1
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Definitions

Conductive heat flux

The rate of heat transfer through a substance per unit area. The conductive heat flux, commonly defined in one dimension, is the product of the thermal gradient and thermal conductivity, with SI units of W m−2. Heat flux is referred to in historical and some current oceanographic literature as “heat flow,” but in precise physical terms, heat flux equals heat flow density.

Advective heat flux

The rate of heat transfer per unit area as a consequence of material motion. The advective heat flux is commonly defined as the product of the temperature, heat capacity, and material velocity, with SI units of W m−2.

Thermal conductivity

The constant of proportionality that relates the thermal gradient to the conductive heat flux, indicating the ability of a medium to transfer heat by conduction. SI units are in W m−1 K−1.

Hydrothermal circulation

Large-scale pore-fluid convection driven by geothermal buoyancy, with flow being strongly influenced by permeability...

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© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.Pacific Geoscience CentreGeological Survey of CanadaSidneyCanada
  2. 2.Department of Earth and Planetary SciencesUniversity of California at Santa CruzSanta CruzUSA