The use of electrical conductivity mapping in the definition of an aquifer vulnerability index

References

1. Anderson, L.J. & E. Gosk (1989): Applicability of vulnerability Maps. ‐ Environ Geol Water Sci, 13, 39–43
   [Google Scholar]
2. Borús, H. & R.Kirsch (2001): The use of geophysical methods for the clay‐content assessment of groundwater protective layers – a tool for groundwater protection. – submitted to Europ. J. of Environm. and Engin. Geophys.
   [Google Scholar]
3. Christensen, N.B. & K.Sørensen (1998): Surface and borehole electric and electromagnetic methods for hydrogeophysical investigations. – European Journal of Environmental and Engineering Geophysics, 3, 75–90
   [Google Scholar]
4. Hölting, B.,Th.Haertlé, K.‐H.Hohberger, K.Nachtigall, E.Villinger,W.Weinzierl & J.‐P.Wrobel (1995): Konzept zur Ermittlung der Schutzfunktion der Grundwasserüberdeckung. – Geologisches Jahrbuch, C 63, 5 – 24
   [Google Scholar]
5. Kalinski, R.J., W.E.Kelly, I.Bogardi & G.Pesti (1993): Electrical resistivity measurements to estimate travel times through unsaturated ground water protective layers. ‐ Journal of Applied Geophysics, 30, 161–173
   [Google Scholar]
6. RIVM
   RIVM (1987): Kwetsbaarheid van het Grondwater ‐ Rijksinsituut voor Volksgezondheid en Milieu hygiene, Staatsuitgeverij, ´s‐Gravehage
   [Google Scholar]
7. Sen, P.N., P.A.Goode & A.Sibbit (1988): Electrical conduction in clay bearing sandstones at low and high salinities. ‐ J. Appl. Phys., 63, 4832–4840
   [Google Scholar]
8. A.G.Gubius
   Sengpiel, K.‐P. & B.Siemon (1997): Advanced tools and inversion methods for AEM exploration. Proc. of Explor. 97: Fourth Decennial International Conf. on Mineral Exploration, ed. by A.G.Gubius , 553 ‐ 556
   [Google Scholar]
9. Sengpiel, K.‐P. & B.Siemon (1998): Examples of 1‐D inversion of multifrequency HEM data from 3‐D resistivity distributions. ‐Exploration Geophysics, 29, 133–141
   [Google Scholar]
10. Telford,W.M., L.‐P.Geldart, & R.E.Sheriff (1990):Applied Geophysics. – Cambridge University Press
    [Google Scholar]
11. ThorlingL, & K.Sørensen (1995): Effect of "windows" on groundwater quality mapped by geophysical methods. ‐European Geophysical Society, XX General Assembly, Hamburg
    [Google Scholar]
12. van Stempvoort, D., L.Ewert & L.Wassenaar (1993): Aqifer Vulnerability Index: A GIS‐compatible method for groundwater vulnerability mapping. – Canadian Water Resources Journal, 18/1, 25 – 37.
    [Google Scholar]