Tellus environment - Cartographier l'invisible pour agir

Securing drilling sites and survey pits

Published in Polluted land and soil

  • Client: ESID / DIANEX
  • Domaine: Depollution
  • Moyens utilisés: Magnetometer

The issue lies in the location of blank zones, without any targets there, and securing of 82 survey pits on a very disturbed area from a magnetic point of view (ballast, ferrous waste, etc.).

The Magsalia expert inversion system produces 3D tomographic pictures from the collected magnetic data. It becomes thus possible to make a reliable estimation of the mass in pure iron of the magnetic targets. For the characterisation of the blank zones, we set up the threshold at 10 g of pure iron and have produced 82 maps in 3D.

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