The pattern of solute transport up-gradient from a point source is studied for the condition of unsteady horizontal groundwater flow in homogeneous aquifer of finite dimensions which occurs in tropical regions. The seasonal sinusoidal variation of groundwater velocity in such regions is represented by a time-dependent expression. Supposing the aquifer is initially solute free, the governing advective-dispersive equation along with the input boundary condition is solved by using the finite Hankel transform. For this the Cartesian frame of reference is transformed into cylindrical one. The analytical solutions are illustrated for a set of input parameters.
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