Accession Number : AD0773552

Title :   A Study of Beach Ground-Water Hydrology and Chemistry.

Descriptive Note : Technical rept.,

Corporate Author : LOUISIANA STATE UNIV BATON ROUGE COASTAL STUDIES INST

Personal Author(s) : Dominick,Thomas F. ; Wilkins,Bert , Jr. ; Roberts,Harry H. ; Ho,Clara L.

Report Date : NOV 1973

Pagination or Media Count : 98

Abstract : The measurement of changing water levels across a tropical carbonate beach profile over three tidal cycles has provided basic data used to substantiate a predictive mathematical model of fluctuation in level of a beach water table. The model was developed from nonlinear partial differential equations governing transient, one-dimensional movement of ground water through porous media. A finite-difference algorithm for a digital computer was developed to solve the equations. Beach homogeneity and nonlinear boundary conditions imposed by tidal fluctuations were assumed in these calculations. A method for in situ determination of the permeability-porosity ratio is proposed and demonstrated for the beach studied. The mathematical model of the beach water table is used to develop an accurate method of calculating inflow and outflow at the beach-ocean interface. (Modified author abstract)

Descriptors :   *Beaches, *Ground water, Mathematical models, Tides, Water chemistry, Computer programs, FORTRAN

Subject Categories : Hydrology, Limnology and Potamology

Distribution Statement : APPROVED FOR PUBLIC RELEASE