Geoscience Reference
In-Depth Information
# 5025
11/24/76
PC
50
0
2
50
14:10
56.2
07:00
14:18
81.0
12:15
14:26
58.2
17:16
(U.T.)
(
)
(MLT.)
Λ
# 5386
12/19/76
PC
50
0
250
13:52
65.7
16:15
14:02
81.1
12:01
14:10
62.0
16:56
(U.T.)
(
)
(MLT.)
Λ
# 5397
12/20/76
PC
50
0
250
10:00
65.4
05:32
10:08
82.5
18:45
10:16
53.0
17:58
(U.T.)
(
Λ
)
(MLT.)
Figure 8.11
Three examples of the high-latitude, dawn-to-dusk component of the elec-
tric field in the ionosphere for a northward IMF. The shaded regions indicate sunward
plasma flow. [After Burke et al. (1979). Reproduced with permission of the American
Geophysical Union.]
A
E-C
Orbit 13157
Day 76157
Southern Hemisphere
2100
1400
Antisunward
700
0
2700
2
1400
Sunward
22100
ILAT (deg)
MLT (hrs)
ALT (km)
74
19
306
80
20.5
307
80
23
308
80
1.5
310
75
2.5
310
67
3.7
309
Figure 8.12a
High-latitude plasma drift velocity in the ionosphere shown for a north-
ward IMF. The flow is extremely structured and does not indicate a simple two-cell
convection pattern, as is often the case during southward IMF. [After Heelis and Hanson
(1980). Reproduced with permission of the American Geophysical Union.]
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