Spectral approach to seawater intrusion in heterogeneous coastal aquifers

C. M. Chang, Hund-Der Yeh

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

This work presents a two-dimensional horizontal plane model of seawater intrusion into a heterogeneous coastal unconfined aquifer under the spatially random recharge condition from a stochastic point of view. The stochastic response of the coastal unconfined aquifer is attributed to uncertainties related to the heterogeneity of aquifer properties and spatial variability of the recharge. Based on the sharp-interface assumption, analytical expressions for the variances of the seawater-freshwater interface elevation and specific discharge in the longitudinal and transverse directions are developed using the perturbation approximation and spectral Fourier-Stieltjes nonstationary representations. We focus on the study of the impact of the heterogeneity of aquifer properties and recharge on these results.

Original languageEnglish
Pages (from-to)719-727
Number of pages9
JournalHydrology and Earth System Sciences
Volume14
Issue number5
DOIs
StatePublished - 13 May 2010

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