Physics
Scientific paper
Oct 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999pepi..115..191l&link_type=abstract
Physics of the Earth and Planetary Interiors, Volume 115, Issue 3-4, p. 191-204.
Physics
18
Scientific paper
Magnetic susceptibility is a convenient measure of determining the concentration of (ferri)magnetic minerals by rapid and non-destructive means. The present paper aims at defining the characteristics of three field probes, commonly used to measure magnetic susceptibility: the Bartington MS2D and MS2F probes, and the Geofyzika KT-5 Kappameter. Two other instruments, the Bartington MS2B probe and Geofyzika KLY-2 Kappabridge are used for calibration. The results show that ``true'' magnetic values are either over- (196%) or underestimated (42%) in comparison with MS2D probe when the MS2F probe is buried in or placed on the surface of cement samples. The KT-5 Kappameter gives true values of susceptibility (102%) as referred to the KLY-2 Kappabridge, and the MS2D probe reads 90% of true values based on the MS2B probe. Depth penetration of each sensor is only a few centimeters. At a depth of 6 cm, the MS2D probe integrates 90% of the susceptibility signal. The KT-5 Kappameter records about 90% in the first 2 cm. For the MS2F probe, almost all of the signal is located within 1 cm around the sensor.
Lecoanet H.
Lévêque François
Segura S.
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