Physical Extension

 

Measurements for mapping the physical extension of landfills can be carried out in an areas of varying extent, from approximately 1 000 m2 up to several hectares. Measurements can be performed both in 2D and in 3D, but the measurements done in 3D normally provide a better understanding of landfills three-dimensional extension. If necessary, an initial large-scale scanning over a larger area of resistivity or other geophysical methods performed to facilitate the choice of study area.

 

Resistivity and induced polarization (IP) are non-destructive geophysical methods to measure sub-surface electrical properties by electrical current being transmitted between electrodes placed at the surface. Combining measurements of resistivity and IP has proven to be a powerful tool to detect the distribution and thickness of landfills. The types of materials that make up a landfill often have other geo-electrical properties than the natural geologic materials surrounding the landfill and therefore the landfill extension can be visualized by means of resistivity and IP.

Results of measurements for mapping landfills may for example be used to:

 

• Locate old landfills

• Determining older landfills extension

• Estimate areas with different types of material in a landfill

• Provide a basis for further investigation, for example by providing a picture of where soil sampling should be performed.

 

For further information, please contact:

 

Håkan Rosqvist at hakan.rosqvist(at)tyrens.se

Torleif Dahlin at torleif.dahlin(at)tg.lth.se

Mats Svensson at mats.svensson(at)tyrens.se

 

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NULLAM LOBORTIS FUSCE

 

Copyright (c) 2012 MaLaGa. All Rights Reserved.

Håkan Rosqvist at hakan.rosqvist(at)tyrens.se

Torleif Dahlin at torleif.dahlin(at)tg.lth.se

Mats Svensson at mats.svensson(at)tyrens.se