Koenigsberger ratio

The Koenigsberger ratio is the proportion of remanent magnetization relative to induced magnetization in natural rocks.^[1] It was first described by J.G. Koenigsberger [de].^[2] It is a dimensionless parameter often used in geophysical exploration to describe the magnetic characteristics of a geological body for help in interpreting magnetic anomaly patterns.

$Q={\frac {M_{rem}}{M_{ind}}}={\frac {M_{rem}}{\chi H}}$ ^[1]

Definition
$Q$	Koenigsberger ratio
$M_{rem}$	remanent magnetization
$M_{ind}$	induced magnetization
$χ$	the magnetic susceptibility; the influence of an applied magnetic field on a material
$H$	the macroscopic magnetic field

The total magnetization of a rock is the sum of its natural remanent magnetization and the magnetization induced by the ambient geomagnetic field. Thus, a Koenigsberger ratio, Q, greater than 1 indicates that the remanence properties contribute the majority of the total magnetization of the rock.^[3]

References

^ ^a ^b "Königsberger Faktor". Spektrum (in German). Retrieved 2023-03-10.
^ Koenigsberger, J. G. (1938). Natural residual magnetism of eruptive rocks. Terrestrial Magnetism and Atmospheric Electricity, 43(3), 299-320.
^ Gubbins, D., & Herrero-Bervera, E. (Eds.). (2007). Encyclopedia of geomagnetism and paleomagnetism. Springer Science & Business Media.

[:0-1] "Königsberger Faktor". Spektrum (in German). Retrieved 2023-03-10.

[2] Koenigsberger, J. G. (1938). Natural residual magnetism of eruptive rocks. Terrestrial Magnetism and Atmospheric Electricity, 43(3), 299-320.

[3] Gubbins, D., & Herrero-Bervera, E. (Eds.). (2007). Encyclopedia of geomagnetism and paleomagnetism. Springer Science & Business Media.

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