Koenigsberger ratio

The Koenigsberger ratio is the proportion of remanent magnetization relative to induced magnetization in natural rocks. It was first described by J.G. Koenigsberger. 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.

${\displaystyle Q={\frac {M_{rem}}{M_{ind}}}={\frac {M_{rem}}{\chi H}}}$

Definition
Q	Koenigsberger ratio
${\displaystyle M_{rem}}$	remanent magnetization
${\displaystyle M_{ind}}$	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.