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This happens, for example, at the lateral scales of a typical Petroleum Field and allows modelling Geothermal Temperature Field with a laterally constant Geothermal Temperature Profile
.LaTeX Math Inline body T_G(z)
The high level overview of overview of the Earth's Geothermal Temperature Profile in given brought at Fig 1.
The zoomed picture of typical Geothermal Temperature Profile in Sedimentary Cover of the Earth's Crust is brought at Fig 2.
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| Fig. 1. Schematic picture of Geothermal Temperature Profile of the Earth. | Fig. 2. A sample of Geothermal Temperature Gradient in Sedimentary Cover of the Earth's Crust. |
The surface temperature variations penetrate the Sedimentary Cover all the way down to the Neutral Temperature Layer (NTL) (see Fig. 3) which varies from few meters to few dozens of meters.
The imaginary temperature profile for the constant surface temperature is called Unbiased Geotherma.
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| Fig. 3.1. A sample of Geothermal Temperature Profile captured at a certain time moment when surface temperature was higher than annual average. | Fig. 3.2. A sample of Geothermal Temperature Profile with depth zoom around temperature variations above Neutral Temperature Layer captured at a certain time moment when surface temperature was higher than annual average but lower than monthly average. |
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| Fig. 3.3. A sample of Geothermal Temperature Profile captured at different time moments. | Fig. 3.4. A sample of Geothermal Temperature Profile captured at different time moments with zoom around temperature variations above Neutral Temperature Layer |
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