Heat Flow, Seafloor: Methods and Observations
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- 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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