Geophysical surveys (electromagnetic and GPR) of hydrocarbon contaminated soils at Scott Base, Marble Point, Bull Pass and Lake Vida

A 2m by 2m grid was used for the EM31 survey. At each point two readings were taken at orthogonal horizontal orientations to establish any anisotropic effect in the Scott Base soil. The GPR survey used lines at 2m spacings with readings taken every 20cm with the 200 MHz antennae.

These same sites were repeated in the following year to examine year to year variations. The surveys were also extended to sites in the Dry Valleys (Bull Pass, Marble Point and Lake Vida) to obtain data from sites with different soils and climate.