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@wikipedia


Rate of Unbiased Geothermal Temperature Profile 

LaTeX Math Inline
body--uriencoded--T_G%7BGN%7D(%7B\bf r%7D)
change along True Vertical Direction 
LaTeX Math Inline
bodyz
:

LaTeX Math Block
anchorHGQET
alignmentleft
{\rm Grad} T_{GN}({\bf r}) = \frac{\partial T_{GN}}{\partial z}

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The most common value of Unbiased Geothermal Temperature Gradient (GT) away from tectonic plate boundaries is:

LaTeX Math Inline
bodyG_T = 0.025 ÷ 0.035 \, \rm °C/m
. 


The difference between Geothermal Temperature Gradient (GradTG) and Unbiased Geothermal Temperature Gradient (GradTGN) is that the former accounts for the effects of the seasonal/daily temperature variations, which are only significant above Neutral Temperature Layer. 

See Also

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Geology / Geothermal Temperature Field

Geothermal Temperature Gradient (GradTGradTG) ] [  Geothermal Temperature Profile (TG) ]

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