Geostatistical Modelling

Anisotropies - 1

To study the spatial characteristics of mineralisation in two or three dimensions, it is essential to generate variograms in different directions and compare their properties to one another.

Should the directional variograms share (more or less) a common set of values for the three parameters (nugget, sill and range) then it is said that the mineralisation is isotropic. That is, the continuity of ore is the same in all directions.

Should however the directional variograms be different in one or more of their properties, it is said that anisotropy exists.