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LaTeX Math Inline
body--uriencoded--T_G(t, %7B\bf r%7D)

Along-hole Geothermal Temperature Profile

LaTeX Math Inline
body--uriencoded--G_T(z%7B\bf r%7D)

Geothermal Temperature Gradient

LaTeX Math Inline
bodyH_n

Neutral Temperature Layer (NTL)

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LaTeX Math Inline
bodyt

Local Calendar Time

LaTeX Math Inline
body\delta T_A

Annual average surface temperature variation based on weather reports

LaTeX Math Inline
bodyz(l)

Wellbore trajectory True Vertical Depth Sub-Sea (TVDss)

LaTeX Math Inline
bodyA_T

Period of annual temperature variation cycle:

LaTeX Math Inline
body--uriencoded--A_T = 1 \, %7B\rm year%7D

LaTeX Math Inline
bodyj_z

True vertical component of regional Earth's Heat Flux

LaTeX Math Inline
body\delta t_A

Time shift of annual highest temperature with respect to January 1

LaTeX Math Inline
bodyT_s

Local annual average surface temperature based on weather reports

LaTeX Math Inline
body\delta T_D

Daily average surface temperature variation based on weather reports

LaTeX Math Inline
body--uriencoded--a_%7Ben%7D

Local average Thermal diffusivity of the soil between Earth's surface and NTL

LaTeX Math Inline
bodyD_T

Period of daily temperature variation cycle:

LaTeX Math Inline
body--uriencoded--A_D = 1 \, %7B\rm day%7D

LaTeX Math Inline
body--uriencoded--\lambda_e(z%7B\bf r%7D)

Subsurface Thermal Conductivity profile as function

of TVDss

of position vector

LaTeX Math Inline
body\delta t_D

Time shift of daily highest temperature with respect to Midnight 00:00



LaTeX Math Inline
body--uriencoded--\delta T_%7B\rm cut%7D

Temperature measurement threshold (usually

LaTeX Math Inline
body--uriencoded--\delta T_%7B\rm cut%7D = 0.01 \, %7B\rm °C%7D
) 

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