SPIA DC data examples
SPIA DC supports 3 data formats:
- .ves format
- ABEM sas s4k format
- ABEM sas .txt format
Examples are attached.
.ves format
Schlumberger
ab/2 rhoa a stdev
2 81.42 1 1.05
3 71.77 1 1.05
4 57.13 1 1.05
5 49.13 1 1.05
6 40.44 1 1.05
7 36.18 1 1.05
8 33.92 1 1.05
9 33.00 1 1.05
10 33.17 1 1.05
11 33.63 1 1.05
1. column: ab/2 is the half distance between the current electrodes A and B
2. column: Resistivity in rhoa (ohmm)
3. column: The distance a between the two potential electrodes M and N
4. column: Standard deviation where e.g. 1.05 equals 5%
Wenner
a rhoa stdev
1 81.42 1.05
2 71.77 1.05
3 57.13 1.05
4 49.13 1.05
5 40.44 1.05
6 36.18 1.05
7 33.92 1.05
8 33.00 1.05
9 33.17 1.05
10 33.63 1.05
1. column: The distance a between |AM|,|MN| and |NB|
2. column: Resistivity in rhoa (ohmm)
3. column: Standard deviation where e.g. 1.05 equals 5%
Dipole dipole / general
AX BX MX NX rhoa stdev
-1.5 -0.5 0.5 1.5 81.42 1.05
-2.0 -1.0 1.0 2.0 71.77 1.05
-2.5 -1.5 1.5 2.5 57.13 1.05
-3.0 -2.0 2.0 3.0 49.13 1.05
-3.5 -2.5 2.5 3.5 40.44 1.05
-4.0 -3.0 3.0 4.0 36.18 1.05
-4.5 -3.5 3.5 4.5 33.92 1.05
-5.0 -4.0 4.0 5.0 33.00 1.05
-5.5 -4.5 4.5 5.5 33.17 1.05
-6.0 -5.0 5.0 6.0 33.63 1.05
1-4. column: Electrode position A, B, M, N
5. column: Resistivity in rhoa (ohmm)
6. column: Standard deviation where e.g. 1.05 equals 5%
If electrodes have Y coordinates the following can be used:
AX, BX, MX, NX, AY, BY, MY, NY, Rhoa, STD