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Rate of Unbiased Geothermal Temperature Profile
LaTeX Math Inline |
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body | --uriencoded--T_%7BGN%7D(%7B\bf r%7D) |
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change along True Vertical Direction : LaTeX Math Block |
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{\rm Grad} T_{GN}({\bf r}) = \frac{\partial T_{GN}}{\partial z} |
It can be estimated as ratio Ratio of true vertical component of regional Earth's Heat Flux
LaTeX Math Inline |
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body | --uriencoded--j_z(%7B\bf r%7D) |
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to the
subsurface Thermal Conductivity LaTeX Math Inline |
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body | --uriencoded--\lambda_e(%7B\bf r%7D) |
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at a certain
subsurface point LaTeX Math Inline |
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body | --uriencoded--%7B\bf r%7D |
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:
LaTeX Math Block |
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G_T{\rm Grad} T_{GN}({\bf r}) = \frac{j_z({\bf r})}{\lambda_e({\bf r})} |
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The most common value of Unbiased Geothermal Temperature Gradient (GT) away from tectonic plate boundaries is: LaTeX Math Inline |
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body | G_T = 0.025 ÷ 0.030 035 \, \rm °C/m |
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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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