An Analytical Solution of Tide-Induced Head Fluctuations in an Inhomogeneous Coastal Aquifer

GUARRACINO LUIS; LEONARDO MONACHESI

Lecture Notes in Earth System Sciences

SPRINGER

Lugar: Heidelberg; Año: 2014 p. 475 - 479

2193-8571

A new analytical solution for tide-induced head fluctuations in a confined aquifer with hydraulic conductivity that increases quadratically with the distance to the coastline is presented. To derive the analytical solution the following assumptions are made: the aquifer ends at the coastline and extends landward infinitely, the water flow is horizontal and obeys Darcy´s law, the specific storativity is constant, and the sea tide is described by a sinusoidal function. The proposed analytical solution has a relatively simple mathematical expression and it is used to estimate the hydraulic conductivity from experimental data. In general terms, it can be concluded that the quadratic heterogeneity produces dampened amplitudes near the coastline and a faster transmission of the tidal effect into the aquifer.