Assessment of Groundwater Quality by Means of Self-Organizing Maps: Application in a Semiarid Area View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2002-11

AUTHORS

FRANCISCO SÁNCHEZ-MARTOS, PEDRO A. AGUILERA, ANTONIA GARRIDO-FRENICH, JOSÉ A. TORRES, ANTONIO PULIDO-BOSCH

ABSTRACT

The Kohonen neural network was applied to hydrochemical data from the Detritic Aquifer of the Lower Andarax, situated in a semiarid zone in the southeast of Spain. An activation map was obtained for each of the sampling points, in which the spatial distribution of the activated neurons indicated different water qualities. To extract the information contained in the activation maps, they were divided into nine quadrats. Cartesian coordinates were assigned to each quadrant ( x, y), and for each sampling point, three derived variables were selected, which were assigned the values x and y of the corresponding quadrat. A classification was defined based on this simple matrix system which allows an easy and rapid means of evaluating the water quality. This assessment highlights the various processes that affect groundwater quality. The method generates output that is easier to interpret than from traditional statistical methods. The information is extracted from the activation maps without significant loss of information. The method is proposed for assessing water quality in hydrogeochemically complex areas, where large numbers of observations are made. More... »

PAGES

0716-0726

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00267-002-2746-z

DOI

http://dx.doi.org/10.1007/s00267-002-2746-z

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1052625740

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/12375091


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