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H
y
(y)
H
N
1.8
T
=
1
s
1.6
1.4
T
=
40
s
1.2
T
=
250
s
1
0.8
T
=
1
s
T
=
40
s
0.6
y, km
-1600
-900
-400
-100
0
100
400
900
1600
E
x
(y)
E
N
T
=1500
s
1
T
=
250
s
0.9
0.8
T
=
100
s
0.7
0.6
T
=
40
s
0.5
0.4
0.3
T
=
15
s
0.2
T
=
1
s
0.1
0
y, km
-1600
-900
-400
-100
0
100
400
900
1600
ρ
′
1
ρ
″
1
Fig. 7.13
Electric and magnetic field profiles (TE-mode) in the two-segment model shown in
Fig. 7.9;
y
-distance to the boundary between segments. Model parameters:
1
=
,
1
=
10 Ohm
·
m
10
5
Ohm
100 Ohm
·
m
,
h
1
=
1km
,
2
=
·
m
,
h
2
=
99 km
,
3
=
0. Profile parameter: period
T
= 1-1500 s