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- coefficient
- size,
- point record.
The point of record in the potential probe is in the middle
between different nominal electrodes:
AM L
*   . (1.1)
2 2
The point of record in gradient probe is in the middle
between the electrodes of the same name:
AB MN l
*    . (1.2)
2 2 2
p
The size of the potential probe L p - the distance in meters
between different nominal electrodes (L), ie,
p
L  L . (1.3)
p

g
Size gradient probe L p - the distance between the point of
recording and different nominal electrode (A or M), ie:
l
g
L  L  . (1.4)
p
2
The probe coefficient is calculated by the formula:
for unipolar probe:
AM  AN
u
K  4 , (1.5)
p
MN
for bipolar probe:
AM  BM
b
K  4 . (1.6)
p
AB
The probe coefficient dimension is in meters. The electrical
resistance of rocks is given by:
 U
  K  MN . (1.7)
rr p
I
AB
The curves forms of imaginary electric resistance method

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