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8
7
6
5
4
3
2
1
0
0
50
100
150
200
250
Location
Fig. 12.29 Successive patterns of
c
k
obtained after 1 (
diamonds
), 5 (
squares
), 10 (
triangles
)
120 (
solid line
) and 1,000 (
smoothest curve
) iterations (Source: Agterberg
2012b
, Fig. 6)
2
1.5
1
0.5
0
-0.5
-1
-1.5
-2
-2.5
0
0.5
1
1.5
2
2.5
3
Local singularity
Fig. 12.30 Logarithmically (base 10) transformed simulated element concentration versus local
singularity after single iteration (
k
¼1) with regression line (singularity assumed to be error-free).
The standard deviation of residuals from the best-fitting straight line amounts to 0.42, which is
greater than 0.25 (Source: Agterberg
2012b
, Fig. 7)
12.32
for
k
1, 120 and 1,000 were 0.42, 0.25 and 0.16, respectively. Three other
residual standard deviations estimated after
k
¼
¼10, 100 and 200 iterations were
0.33, 0.26 and 0.22, respectively. It can be concluded that the original white noise
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