An evaluation of aquifer vulnerability in two nitrate sensitive areas of Catalonia (NE Spain) based on electrical resistivity methods
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- 作者：A. Sendròs (1)
Y. Diaz (1)
M. Himi (1)
J. C. Tapias (2)
L. Rivero (1)
X. Font (1)
A. Casas (1) - 关键词：Vulnerability mapping ; Groundwater pollution ; Hydrogeophysics ; Electrical resistivity methods ; Catalonia (NE Spain)
- 刊名：Environmental Earth Sciences
- 出版年：2014
- 出版时间：January 2014
- 年：2014
- 卷：71
- 期：1
- 页码：77-84
- 全文大小：587 KB
- 作者单位：A. Sendròs (1)
Y. Diaz (1)
M. Himi (1)
J. C. Tapias (2)
L. Rivero (1)
X. Font (1)
A. Casas (1)
1. Geochemistry Petrology and Geological Prospecting Department, Water Institute, Faculty of Geology, University of Barcelona, Barcelona, Spain
2. Soil Science Laboratory, Water Institute, Faculty of Pharmacy, University of Barcelona, Barcelona, Spain - ISSN：1866-6299
文摘
The protection of groundwater has become one of the most important European environmental policies as evidenced by the Orders relating to the protection of water from contamination, Directive 2000/60/CE of the European Parliament and the European Union Council, and more concretely Directive 2006/118/118/CE, related to the protection of groundwater from pollution and degradation. Traditional methods for assessing vulnerability include soil surveys, drilling and analysis of lithology logs from wells with the objective of characterising the thickness, hydraulic properties and lateral extend of the protective layers. However, such studies can be labour-intensive and expensive. In addition, the parameters measured may have high spatial variability, which makes accurate characterization over large areas difficult. Fortunately, a numerical index of protection can be assigned from the longitudinal electrical conductance parameter derived from electrical resistivity surveys (VES, ERT or any other electrical or EM method). This can be more accurate and reliable than any other vulnerability index derived only from visual inspection or interpolated from sparse borehole data.