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An underground UHF‐EM transillumination experiment at the Big Nickel Mine in Sudbury, Canada
Author(s) -
LaFleche P. T.,
Jensen O. G.
Publication year - 1988
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs023i001p00023
Subject(s) - transillumination , ultra high frequency , geology , electromagnetic radiation , absorption (acoustics) , remote sensing , acoustics , optics , electrical engineering , physics , engineering
The Geophysics Laboratory of McGill University investigated the use of UHF‐EM transillumintion measurements in geophysics through the construction of a prototype 445‐MHz continuous‐wave transillumination instrument designed for underground use in geophysics. Test surveys with this instrument were conducted at the Big Nickel Mine in Sudbury, Ontario, to obtain through‐rock electromagnetic absorption rates. Measurements were made at several sites between underground drifts and the surface. The results of the field surveys indicate that the UHF‐EM transillumination technique is feasible and, under strictly defined field conditions, can provide useful information on the in situ electrical properties of rocks.