Geotomography applied at the Stripa Mine in Sweden
Description:
LLNL made ultrahigh-frequency (450-MHz) electromagnetic borehole-to-borehole transmissions in the Stripa Mine near Guldsmedshyttan, Sweden, in April 1979. Transmission loss measurements were made between four sets of 76-mm boreholes 30 m long, located at the end of a drift. Distances between the boreholes varied from 2 to 22 m. More than 25,000 data points were taken. A geotomograph was constructed to show the variation of attenuation between boreholes. The observed spatial variation of electro…
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Date:
April 7, 1980
Creator:
Okada, J.T.; Laine, E.F.; Lytle, R.J. & Daily,W.D.
Partner:
UNT Libraries Government Documents Department