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- W2521567978 abstract "This paper describes experimental results carried out in skarn deposits with a polarization-sensitive directional borehole radar. This radar employs a dipole array and loop antenna in a borehole (DALAB), which was proposed in a previous study. This radar system was applied to polarimetric radar measurement of a fault and sphalerite veins in skarn. The fault may be regarded as a plane-type reflector while the sphalerite veins as reflectors with complicated shapes. The field experiments were undertaken at the Nakatatsu mine in Fukui Prefecture, Japan. The reflection point and the magnitude of the polarization ratio (MPR) were obtained in 3-D space using the DALAB system. We found that the MPR of a reflected wave from the fault was more than 10 dB while that from sphalerite was less than about 10 dB. The wideband frequency analysis showed that difference of the estimated arrival azimuth angles between two measurement depths is larger in sphalerite veins than in a fault at the lower frequencies than 250 MHz. This implies that we can discriminate between a fault and sphalerite as well as determine target locations in three dimensions." @default.
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- W2521567978 date "2016-06-01" @default.
- W2521567978 modified "2023-09-27" @default.
- W2521567978 title "Experiments in skarn with a polarization-sensitive directional borehole radar" @default.
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- W2521567978 doi "https://doi.org/10.1109/icgpr.2016.7572658" @default.
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