Information Technology Reference
In-Depth Information
W
zy
Re W
zy
Im W
zy
0.5
0.4
0.3
‛
eff
=
0.11
kmh
‛‛
eff
=
0.35
km
T
=
0.01 s
h
h
0.2
0.1
0
y, km
0.5
0.4
T
=
0.1 s
0.3
0.2
‛
eff
=
0.35
km
‛‛
eff
=
1.11
km
h
h
0.1
0
y, km
0.5
0.4
0.3
T
=
1 s
0.2
‛
eff
=
1.11
km
‛‛
eff
=
3.51
km
h
h
0.1
0
y, km
0.5
0.4
T
=
10 s
0.3
0.2
h
‛
eff
=
3.51
km
h
‛‛
eff
=
11.1
km
0.1
0
y, km
-25
-20
-15
-10
-5
0
5
10
15
20
25
Re W
zy
for T
=
10 s
ρ
‛
ρ
‛‛
=
Fig. 6.7
Profiles of the tipper
W
zy
in the vertical-interface model. Model parameters:
10 Ohm
·
,
=
m
100 Ohm
·
m
anomaly is about 5 (
h
eff
+
h
eff
). The real inductive arrows are shown at the bottom
of Fig. 6.7. They radiate from left to right, that is, from lower to higher resistivity.
6.2 The Dike Model
This two-dimensional model has been advanced by Rankin (1962). It can give an
idea of local magnetotelluric anomalies. The model consists of the nonconductive
air and the conductive Earth of resistivity
v
that includes a dike of width 2
and
