1968 Volume 10 Issue 2 Pages 9-14
Using the FOURIER series, we obtained the theoretical equations, (3), (4) and (5) that showed the manthly average cyclic variation of the shallow groundwater temperature near the water table for a year. The values calculated by Eqs. (3), (4) and (5) were close to the observed ones as shown in Figs.2,3 and 4.