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K. Bullough, T.R. Kaiser, H.J. Strangeways (1985), Unintentional manmade modification effects in the magnetosphere, J. Atmos. Terr. Phys., 47, 1211-1223 , 50/60 .

J. Manninen Some aspects of ELF-VLF emissions in geophysical research,

Academic Dissertation, SodankylД Geophysical Observatory Publications, Oulu 2005
R.A. Helliwell, J.P. Katsufrakis, T.F. Bell and R. Raghuram (1975), VLF line

radiation in the earth's magnetosphere and its association with power system radiation, J. Geophys. Res. 80, 4249-4258
C.G. Park, R.A. Helliwell (1978), Magnetospheric effects of power line radiation,

Science, 200, 727-730
C.G. Park, R.A. Helliwell (1981), Power line radiation in the magnetosphere,

Adv. Space Res., 1, 423-437
K.H. Yarby, A.J. Smith, K. Bullough (1983), Power line

harmonic radiation in

Newfoundland, J. Atmos. Terr. Phys., 45, 409-419

10.02.2010

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PLHR: o 50 / 60 / 100 / 120 o MLR: o 50 / 60 / 100 / 120 o o , - PorojДrvi 17/11/1993 Total power -5 dB 1,8 -15 1,7 -25 1,6 14.09 14.11 Time(UT) -35 14.13

Frequency (kHz)

4,2 4,1 4,0 07.30

-30 -40 07.45 Time(UT) 07.00

10.02.2010

Frequency (kHz)

PorojДrvi 25/01/1993 Total power 4,3 -20 dB

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50/60 ?

10.02.2010

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Magnitude, (dB) Magnitude, (a.u.) 1 0 -1 0 -40 -80 ~1/f 0 20 40 Time (ms) 60 80 RH R R
H H

N RH

RH R RH
H


10.02.2010

0

1

2 3 Frequency (kHz)

4

5

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50% n=1


n >> 1

~ 200В600

RH ~

L
10.02.2010

40 В 50

~ (0,2В4)

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f = 16,66 / 25 / 50 / 60 ; L P =1 U = 25
U2 R~ H P


50 ; f = 50 / 60 ; P =1 U = 750 L 200 ;
562 U2 R~ H P

625

L

50/60

~ 50В200


R
1

: R
2

R ~ 500В600




f ~ 2-8 ( ~ 20 ­ 150 ) . .
10.02.2010 , .




10.02.2010

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:
,
: , -

- :
A
m ­ ­ .

A0 cos

0

t m sin t

0

2

Time


10.02.2010 , .



, , , , , :
> < t

t T, , :
< > t dB -20 -30 -40 -50

dB

0 -10 -20 -30 Frequency

Frequency

Time
10.02.2010

Time

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t T, T, . "" .
dB
-20 Frequency

-30
-40 -50 Time

10.02.2010

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10.02.2010

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, «» ( ): 1

t

Vg

n

n t

,k

B=B0+ B(t)
B0=10 100 Ne=1010 1012

-3

I(t)

: 2 k 2c 2 p 2 n 1 2 H cos :



t

10.02.2010

Vg
1

H

s
~

H

t
/t

H

H

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«»
,
B (G) B (G) Frequency (MHz)

42
38

40
37

Frequency (MHz)

34 49
47 45 0 2 4 6 Time (ms) 8 10

34 72 69,5
67 0 2 4 6 Time (ms) 8 10

, ; B/B~10-30%
10.02.2010 , .


50/60

10.02.2010

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Zevs Tx
PorojДrvi SGO SWEDEN Rovaniemi Oulu

- , ,
RUSSIA 100 0 100 200 km

FINLAND Helsinki
10.02.2010

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, «»
4,3
52в82 51в82

PorojДrvi 20/01/1993 Total power

d B -20
83в50 + 82

4,2
Frequency (kHz) -30

85в50 ­ 82

4,1 -40

81в50 + 82 83в50 ­ 82 79в50 + 82

50в82 49в82

05.50 06.00 Time(UT) J. Manninen Some aspects of ELF-VLF emissions in geophysical research, Academic Dissertation, Sodankyla Geophysical Observatory Publications, Oulu 2005
10.02.2010 , .

4,0 05.30

05.40


(MLR)
: ) (MRL); 100 ) , 50 (PLHR) PorojДrvi 17/11/1993 Total power 1,8 Frequency (kHz) () -15
35в50

d B

-5

()
36в50

1,7

-25

34в50 33в50

1,6 14.09 14.10

-35

14.11 14.12 14.13 Time(UT) J. Manninen Some aspects of ELF-VLF emissions in geophysical research, Academic Dissertation, Sodankyla Geophysical Observatory Publications, Oulu 2005
10.02.2010 , .



f1
< <

fn

<

fn+

1

20 ms

128 Frequency (kHz) 1,8 1,8 Frequency (kHz)

4

dB

0

-20

1,7

1,7

1,6

0
10.02.2010

30 Time(sec)

60

1,6

-40 0 0,3 Time(sec) 0,6

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«»
2950/3050 . 4 .
5 4 Frequency (kHz) 3 2 1 PorojДrvi 20/01/1993 Total power dB -15

-25
-35 -45 1135:33

0 1135:13

1135:23 Time(UT)

J. Manninen Some aspects of ELF-VLF emissions in geophysical research, Academic Dissertation, Sodankyla Geophysical Observatory Publications, Oulu 2005
10.02.2010 , .





10 ms 10 ms

0,1%

,
Group velocity

4 Frequency (kHz) 3,8 3,6 3,4 3,2 3
10.02.2010

0

5

10 15 Time(sec)

20

H/4

Frequency

H

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4,8 4,6 4,4 Frequency (kHz) 4,2 4 04/09/1982 AUREOL3

3,8 3,6

3,4 02.11

02.13

Time(UT)

02.16

02.18

M. Parrot, Observations of power line harmonic radiations by the low-altitude AUREOL-3 satellite, J. Geophys. Res., vol. 99, no. A3, pp. 3961-3966, 1994
10.02.2010 , .



1 4,9 dB 0 -20

Frequency (kHz)

4,7

4,5

-40

4,3

-60 0 5 10 Time (sec) 15 20

, 50/60 . 50/60 .
10.02.2010 , .



10 4,9 dB 0 10 4,61 dB 0

Frequency (kHz)

Frequency (kHz)

4,7

-20

-5

4,6

4,5

-40

-10

4,3 0

-60 5 10 15 20 Time (sec)

4,59 0 5 10 15 20 Time (sec)

-15

, 10 . , 5-6
10.02.2010 , .



, ,

, (t10-5 ) , . 100 . , 100/120 .
,

50/60 . . , ( f ~ 1В10 ) .


( 2 ) . .
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10.02.2010

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