Part III - Scanner solenoid - ground conductivity
and software, PC, and portable calibration stand holder - 1 piece - a detailed description of the object of the contract is attached as Appendix 2C to the Terms of Reference - Description of the order (part III).
The measurements are then analyzed using a mathematical heat transfer model to estimate ground conductivity and borehole resistance values.
The injection-rate dependence of ground conductivity and borehole resistance estimations in groundwater-filled boreholes complicates the evaluation process.
The ground conductivity is then estimated using the slope of the straight line for times larger than 20 rb2/a.
This is done by fitting guess values of ground conductivity and borehole resistance to simulate the circulating fluid temperature.
The effects of ground conductivity
and field distortions are accommodated in the real-lime processing.
In this application it is typically only used as a guide and is often carried out in conjunction with other tools such as ground conductivity
McNeill (1980) presented the theoretical basis for the use of electromagnetic (EM) ground conductivity meters to map lateral variation in subsurface electrical conductivity.
Ground conductivity meters produce a continuous measurement of ground [EC.
Conductivity units will be used in the following description so that measurements made with ground conductivity meters can be compared with the results shown below.
To make a measurement of ground conductivity, current (I) is injected into the ground through 2 electrodes ([C.
As the Crazy Creek Zone is covered by overburden, and only known from geophysics and limited historical drilling, a ground conductivity
survey (EM31) was completed over the Zone in 2003 to determine if the intersected mineralization outcrops on surface, to better define the extents of the near surface mineralization and to help constrain the planned trenching program.