A Method For A Precautionary Assessment Of
Aquifer Vulnerability To Pollution
Author(s)
E. Cameron, L. Garavaglia & G. F. Peloso
Abstract
The assessment of aquifer vulnerability to pollution is an important tool for
protecting groundwater resources. Vulnerability may be underestimated due to
uncertainties affecting this assessment, with potential adverse consequences for
pollution prevention policies; in order to reduce the likelihood of vulnerability
underestimation and protect the efficacy of such policies, a precautionary
vulnerability value may be used as a reference for planning and design. This
paper illustrates an approach for selecting such a precautionary vulnerability
value, applied to the vulnerability point count system SINTACS R5 developed
by the Italian National Research Council. The method uses possibility theory and
fuzzy mathematics in order to: 1) define quantitative models of the uncertainties
– including those of a subjective nature – regarding the parameters and partial
ratings used to assess vulnerability; 2) to propagate the uncertainty to the final
degree of vulnerability; 3) to calculate how much each vulnerability degree
among the possible ones can be considered precautionary, starting from the
definition of the level of precaution related to each degree. Vulnerability maps
that correspond to different precaution degrees and can be generated
automatically are illustrated, and some possible criteria for selecting an optimal
degree are outlined.
Keywords: aquifer vulnerability, uncertainty, precaution, fuzzy mathematics,
possibility theory.
Keywords
aquifer vulnerability, uncertainty, precaution, fuzzy mathematics,possibility theory.
Related Book
Other papers in this volume
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