Mineral exploration technology comparison


Read our case study...



The University of Uppsala in Sweden has undertaken a comparative experimental seismic study of a technical solution for subsoil imaging.
The experiment was conducted at the site of the Ludvika iron oxide mine.



Comparison of different recording arrays

  • Broadband MEMS sensors (492 pieces spacing : 5 m on a total of 2400 m length)
  • 3C geophones  (150 pieces spacing : 10 m on a total of 1500 m length)
  • DAS, Straight fiber (Spatial sampling : 10 m on a total of 2100 m length)
  • Borehole DAS-HWC (Helically wound cable ) (Spatial sampling : 2 m depth,  MD : 460 m)

Comparison of different approaches

  • Synthetic
  • 3D 3C FD modeling
  • Active
  • 2 200 Hz linear sweep
  • Passive - in total 5 days of recording


  • Our results agree with the synthetic model
  • Similar response of the arrays :
    • Synthetic
    • Active Broadband MEMS
    • Active DAS
    • Passive Broadband MEMS
  • Passive data performs well after only 8 hours of nighttime recording
  • Surface DAS may yield satisfactory results for surface wave analysis
  • Borehole HWC DAS gives promising results for subsurface characterization and mineral exploration
  • This study is supported by the FUTURE project, Fiber Optic Sensing and UAV Platform techniques for Innovative Mineral Exploration.
  • FUTURE has received funding from ERA MIN3 ,Raw Materials for the Sustainable Development and the Circular Economy.
  • We thank Nordic Iron Ore AB for their collaboration in the project.