Äîêóìåíò âçÿò èç êýøà ïîèñêîâîé ìàøèíû. Àäðåñ îðèãèíàëüíîãî äîêóìåíòà : http://solarwind.cosmos.ru/txt/2010/presentations/Theory/Kostrov_Presentation1.pdf Äàòà èçìåíåíèÿ: Wed Mar 3 19:16:21 2010 Äàòà èíäåêñèðîâàíèÿ: Mon Oct 1 20:48:26 2012 Êîäèðîâêà: Ïîèñêîâûå ñëîâà: ï ï ï ï ï ï ï ï ï ï ï ï ï ï ï ï ï ï ï ï ï ï ï ð ï ð ï ð ï

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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, SodankylÄ 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

, .



PLHR: o 50 / 60 / 100 / 120 o MLR: o 50 / 60 / 100 / 120 o o , - PorojÄrvi 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)

PorojÄrvi 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

, .



50% n=1


n >> 1

~ 200Â600

RH ~

L
10.02.2010

40 Â 50

~ (0,2Â4)

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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

~ 50Â200


R
1

: R
2

R ~ 500Â600




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
PorojÄrvi SGO SWEDEN Rovaniemi Oulu

- , ,
RUSSIA 100 0 100 200 km

FINLAND Helsinki
10.02.2010

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, «»
4,3
52â82 51â82

PorojÄrvi 20/01/1993 Total power

d B -20
83â50 + 82

4,2
Frequency (kHz) -30

85â50 ­ 82

4,1 -40

81â50 + 82 83â50 ­ 82 79â50 + 82

50â82 49â82

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) PorojÄrvi 17/11/1993 Total power 1,8 Frequency (kHz) () -15
35â50

d B

-5

()
36â50

1,7

-25

34â50 33â50

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 PorojÄrvi 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

, .



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 ~ 1Â10 ) .


( 2 ) . .
10.02.2010 , .



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- . , .


, - . . , , , .

10.02.2010

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