Contents

1
?????????? ???? (??????????????)
2
Contents ?????????? ????????????? ?????????????
????? ??????? ????????????????
3
????? 1-4Re (1-10eV)
??
???
????????? peak3-4Re (10-100keV)
???
??????? (1-10keV)
??????
???
???? 1.5-4Re (100keV-10MeV??)
??????
???(1eV??)
4
?????????????
5
MHD??????????
(1)
n ?????? m ????(??????????) v ???????? Pth
????? Pth nkBT j ???????? j ne(vi-ve) B
??????
6
MHD??????????
(1)
???? ????????? ????????????
????
(2)
????????????????????????
????????????tension force (????)??????????????????
??????????
7
?????????????????(?????)
?????
????
1.???? ????
3.????? ?????? ??
2.?????
8
??? ????
??
??
???
??
?? ???
?????
??
??
9
lobe
????????B?
B
-?PB
-?Pth
????????B?
plasma sheet
-?Pth
-?PB
B
????????B?
lobe
10
(1)?? ????xB???????
(3)
???????? ????????????? ????
11
????????????
Pth nkT
B
B
j?
j?
???
??? (?????)
??? (?????)
???
????(?Pth )
????(?Pth )
12
lobe
????????B?
B
-?PB
-?Pth
????????B?
plasma sheet
-?Pth
-?PB
B
????????B?
lobe
13
lobe
B (????????)
B
j?
-?PB
-?Pth
B (????????)
????????B?
plasma sheet
B (????????)
-?Pth
j?
-?PB
B
????????B?
B (????????)
lobe
14
???????
B
B0
??
j?
???
15
Introduction to Space Physics ??
Ness et al., JGR, p.3305, 1966.
16
???????????? ?????????????
17
???????
???
??????
???
??????????????
(4)
18
(4)
?1? j???????? ?2? flow?shear(?)????? ?3?
??????????? ?????????????????????
Hasegawa, A., and T. Sato, Generation of field
aligned current during substorm, in Dynamics
of the Magnetosphere, edited by S.-I. Akasofu,
pp. 529-542, D. Reidel, Norwell, Mass.,
1979. Haerendel, G., Field-aligned currents in
the Earth's magnetosphere, in Physics of
Magnetic Flux Ropes, Geophys. Monogr. Ser., vol.
58, edited by C. T. Russell, E. R. Priest,
and L. C. Lee, pp. 539-553, AGU, Washington, D.
C., 1990.
19
?1? j???????? ?3? ???????????
B
B0
B
j?
??
j?
???
???
?B
???
?B
????(?Pth )
?n
20
flow?shear(?)????????????
B
??
???
??
21
flow?shear(?)????????????
B
???????
??????? ??????????
???????
22
???????????? ??????
23
Aurora movie provided by Trond Trondsen (U.
Calgary) flow shear?????????????
24
?????????1?????????
??????????
????????B???? ?v????? ?v???? ?v?0???????????
?????????(???????)?????? (????)??????? (?????????
????????????????) ?????????(???????)?????? (?????)
???????????? ? ???????????????????
25
?????????????????? Knight (PSS,
p.741, 1973) Lyons (JGR, p.17, 1980)
V? ???????
??
??????J?
??
??????? V?
26
??????????? ??????????? ????????
27
???????????????????? J?KV?
Shiokawa and Yumoto (JGR, 1993)
28
Aurora movie provided by Trond Trondsen (U.
Calgary) Kinetic Alfven wave??????flickering
aurora
29
Inertia Alfven Wave ???????????????????????
Watt et al. (GRL, 2005GL024779, 2006)
30
????????????????
31
???????????????? ? ??????????
32
???????????? Kotzebue, Alaska September 14, 1994
33
(No Transcript)
34
(No Transcript)
35
2????? ?????????
NENL model
current disruption model
36
?????
????
37
1.???? ????
NENL model
3.????? ?????? ??
2.?????
current disruption model
2.?????
3.????? ???
2.????? ????????
1.???? ????
38
NENL???????tail????????????
Shiokawa et al. (JGR, 1998)
39
???????????breakup????NENL???????????????????????
???
Lyons et al. (JGR, 2002)
40
current disruption????????????
Takahashi et al. (JGR, 1987)
41
2??????????????????THEMIS???
THEMIS???? ??????????