Chris has been busy down South (in the snow!!) carrying out EM surveys this week.
An Electromagnetic (EM) Survey, maps soil characteristics within the soil profile, providing comprehensive data on the soil variability. The usefulness of soil conductivity stems from the fact that sands have a low conductivity, silts have a medium conductivity and clays have a high conductivity. Therefore conductivity (measured at low frequencies) correlates strongly to soil grain size and texture.
See attached photos for two soil profiles taken from a 80ha block.
Soil Profiles – Ranfurly 80ha