PROBLEMS OF GEOCOSMOS

Proceedings of the 7th International Conference "Problems of Geocosmos" (St. Petersburg, Russia, 26-30 May 2008)
impossible to observe the changes in the resistivity of all three deep structure elements with the sufficient
accuracy using only one observation point.
Table 1. Results of the testing of the method at three points of the profile AA( x = 37, 45, 60 km )
for two variants of the changes in the resistivity of three structure elements
1 Variant 1 Variant 2
2 i 10 8 20 10 8 20
3 ρi1 Ω m 9 7 15 10.5 7 22
4 ρi2 Ω m 11 9 25 9.5 9 18
5 (ρi2/ρi1)и 1.222 1.286 1.667 .905 1.286 .818
6 x = 37 km, ε10 max = 0.75, ε8 max = 0.20, ε20 max = 0.25
7 (ρi 2/ρi 1)э 1.287 1.189 1.484 .873 1.324 .898
δ% 5.3 7.6 11.0 3.5 3.0 9.8
8 δ%(noise 3%) 20 13.4 38 13.3 7.7 75
9 x = 47 km, ε10,max = 0.77, ε8,max = 0.91, ε20,max = 0.17
10 (ρi 2/ρi1)э 1.234 1.260 1.673 .899 1.298 .825
δ% 0.9 2.1 0.3 0.5 0.9 0.9
11 δ%(noise 3%) 2.8 1.8 17 1.4 1.2 7.1
12 δ%(noise 5%) 7.6 1.6 37.8 7.1 1.7 23
13 x = 60 km, ε10,max = 0.74, ε8,max = 0.51, ε20,max = 0.14,
14 (ρi2/ρi1)э 1.219 1.229 1.753 .904 1.311 .812
δ% 0.2 4.4 5.2 0.1 2.0 0.7
15 δ%(noise 3%) 2.9 4.4 10.5 3.1 3.0 20
16 δ%(noise 5%) 6.0 5.0 23.5 6.0 2.8 32
Table 2. Defining of the changes in the resistivity of 20th structure elements
by the observations at the point x = 14.5 km
i 10 8 20
(ρi2/ρi1)и .905 1.286 .818
εi max .45 .0038 .40
(ρi 2/ρi 1)э
δ%
δ%
(noise 3%)
( ρi 2 /ρi 1)э
δ%
δ%
(noise 3%)
0.906
1.685
0.799
0.1
31
2.3
6.6 281 12.4
0.882
0.859
2.5
4.9
4.9 10.1
481