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longitudinal conductivity[s
−1
]
1E+5
1E+6
1E+7
1E+8
1E+9
1E+10
1E+11
1E+12
500
σ
P
12 LT
σ
Η
400
σ
||
00 LT
300
00 LT
12 LT
00 LT
200
12 LT
100
Summer
R=150
0
Pedersen and Hall conductivities [s
−1
]
longitudinal conductivity [s
−1
]
1E+5
1E+6
1E+7
1E+8
1E+9
1E+10
1E+11
1E+12
500
σ
P
00LT
σ
Η
400
12LT
σ
||
300
00LT
12LT
200
00LT
12LT
100
Winter
R=15
0
1E+1
1E+2
1E+3
1E+4
1E+5
1E+6
1E+7
1E+8
Pedersen and Hall conductivities [s
−1
]
Fig. 2.4.
The height distributions of the specific Pedersen
σ
P
, Hall
σ
H
and longi-
tudinal
σ
conductivities
and ions are magnetized (
β
e
,β
i
1)
,
they drift together in the crossed elec-
tric and magnetic field. There is no mutual slipping and therefore there is no
Hall current in the high regions.
Comparing electron and ion terms in brackets in (1.93), one notices that
the relative contribution of electrons and ions to
σ
P
is defined by the product
β
e
β
i
. Where
β
e
β
i
<
1
,
the main part of the conductivity
σ
P
is defined by
electrons. In the low
E
-layer, between 70 and 100 km, electrons are magnetized
β
e
1 and ions collide so frequently that
β
i
1
.
Here
β
e
β
i
<
1and
σ
P
≈
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