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| true vertical of the Neutral Temperature Layer below the Earth's surface |
| Local average Thermal diffusivity of the soil between Earth's surface and NTL |
| Period of annual temperature variation cycle: | LaTeX Math Inline |
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| body | --uriencoded--A_T = 1 \, %7B\rm year%7D |
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| Annual average surface temperature variation based on weather reports |
| LaTeX Math Inline |
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| body | --uriencoded--\delta T_%7B\rm cut%7D |
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| Temperature measurement threshold (usually | LaTeX Math Inline |
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| body | --uriencoded--\delta T_%7B\rm cut%7D = 0.001 \, %7B\rm °C%7D |
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) |
See Also
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Geology / Geothermal Temperature Field / Neutral Temperature Layer
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