The theory, construction, and field use of a direct current potentiometer for measuring earth resistivity
The fundamental theory underlying direct current methods of measuring "apparent" earth resistivity and of interpreting these field measurements to obtain the actual resistivities of the parts of a composite earth is extensively reviewed. The three main types of apparatus used in...
| Summary: | The fundamental theory underlying direct current
methods of measuring "apparent" earth resistivity and
of interpreting these field measurements to obtain
the actual resistivities of the parts of a composite
earth is extensively reviewed. The three main types
of apparatus used in making the field measurements,
the Gish-Rooney, "Megger", and "porous pot" instruments,
are briefly outlined. Considerations involved in making
a general design for a "porous pot" outfit are briefly
discussed, and a detailed description of the apparatus
used by the writer is given. Field data obtained with
this apparatus is interpreted by the several methods
discussed in the literature.
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