Plot a graph temperature waves as functions of time and depth. (b) Plot on a graph the vertical soil temperature profiles at 0435, 0835, 1235, 1635, 2035, and 0035 h. (c) Determine the damping depth and thermal diffusivity of the soil from the observed amplitudes, as well as from the times of temperature maxima (taken from the smoothed temperature waves) as functions of depth.
The following soil temperatures (C) were measured during the Great Plains Field Program at O'Neil, Nebraska
Table1. Data table of soil temperature measured during the Great Plains Field Program
at O'Neil, Nebraska
(a) Plot a graph temperature waves as functions of time and depth.
(b) Plot on a graph the vertical soil temperature profiles at 0435, 0835, 1235, 1635, 2035, and 0035 h.
(c) Determine the damping depth and thermal diffusivity of the soil from the observed amplitudes, as well as from
the times of temperature maxima (taken from the smoothed temperature waves) as functions of depth.
c.1 Determination of damping depth and thermal diffusivity from the observed amplitudes:
c.2 Determination of damping depth and thermal diffusivity based on time lag data:
(d) Estimate the amplitude of the surface temperature wave and the time of maximum surface temperature from
extrapolation of the soil temperature data.
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