Database: Wind Shock Analysis
Event ID: 19981131729
Observation time: 04/23/1998 113.72849 1729 [UT]
|
|
General
Information (About, Top)
| Year |
1998 |
| Fractional day of year |
113.728490 |
| Arrival time of shock [seconds of day] |
62941.5 ± 3.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
220.170 |
| Y GSE location of spacecraft [Re] |
-6.166 |
| Z GSE location of spacecraft [Re] |
20.384 |
| Upstream plasma points selected for analysis |
0007 |
| Upstream field points selected for analysis |
0221 |
| Downstream plasma points selected for analysis |
0007
|
| Downstream field points selected for analysis |
0214 |
| Minimum chisq/dof for RH8,RH9,RH10 |
4.27, 12.32, 12.70 |
Event added to database
|
Mon Feb 14 11:06:12 2005
|
Event last processed
|
Mon Mar 30 17:39:55 2009
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
56.077 ± 1.394
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-326.8 ± 1.1 |
-370.4 ± 3.1 |
| Vy GSE [km/s] |
-13.8 ± 1.2 |
-30.1 ± 2.2 |
| Vz GSE [km/s] |
-3.0 ± 0.8 |
-1.8 ± 2.6 |
| Wi [km/s] |
25.9 ± 0.5 |
36.4 ± 1.7 |
| We [km/s] |
818.6 ± 15.0 |
1151.6 ± 52.7 |
| Ni [n/cc] |
14.3 ± 0.8 |
33.8 ± 3.2 |
| Bx GSE [nT] |
-3.1 ± 0.1 |
-4.0 ± 0.3 |
| By GSE [nT] |
2.8 ± 0.1 |
7.2 ± 0.3 |
| Bz GSE [nT] |
-0.2 ± 0.3 |
0.2 ± 0.7 |
Plasma Beta
|
1.154 ± 1.168
|
1.379 ± 1.289
|
Sound Speed [km/s]
|
33.42 ± 0.61
|
47.01 ± 2.15
|
Alfven Speed [km/s]
|
24.13 ± 0.68
|
31.22 ± 2.45
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.971 ± 0.048 |
-0.124 ± 0.092 |
-0.206 ± 0.203 |
-11.86 ± 13.18 |
187.31 ± 5.41 |
| VC |
-0.936 ± 0.020 |
-0.352 ± 0.054 |
0.026 ± 0.026 |
1.49 ± 3.07 |
200.62 ± 3.32 |
| MX1 |
-0.982 ± 0.011 |
-0.187 ± 0.060 |
0.015 ± 0.015 |
0.83 ± 3.26 |
190.77 ± 3.48 |
| MX2 |
-0.981 ± 0.011 |
-0.193 ± 0.055 |
0.034 ± 0.034 |
1.98 ± 3.28 |
191.11 ± 3.20 |
| MX3 |
-0.979 ± 0.011 |
-0.197 ± 0.051 |
0.051 ± 0.051 |
2.90 ± 3.77 |
191.38 ± 3.00 |
| RH08 |
-0.985 ± 0.002 |
-0.165 ± 0.009 |
0.050 ± 0.050 |
2.88 ± 0.67 |
189.53 ± 0.52 |
| RH09 |
-0.989 ± 0.010 |
-0.131 ± 0.068 |
0.073 ± 0.072 |
4.16 ± 4.03 |
187.52 ± 3.95 |
| RH10 |
-0.989 ± 0.010 |
-0.131 ± 0.068 |
0.073 ± 0.072 |
4.16 ± 4.03 |
187.52 ± 3.95 |
| Average |
-0.976 |
-0.185 |
0.014 |
0.818 |
190.717 |
| Median |
-0.981 |
-0.165 |
0.050 |
2.882 |
190.765 |
| Deviation |
0.017 |
0.074 |
0.091 |
5.259 |
4.343 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
49.4 ± 1.1 |
393.4 ± 10.4 |
2.38 ± 0.31 |
| VC |
62.5 ± 1.5 |
389.3 ± 9.6 |
2.38 ± 0.31 |
| MX1 |
52.7 ± 1.5 |
401.5 ± 9.9 |
2.38 ± 0.31 |
| MX2 |
53.1 ± 1.5 |
401.2 ± 9.9 |
2.38 ± 0.31 |
| MX3 |
53.5 ± 1.6 |
400.8 ± 9.8 |
2.38 ± 0.31 |
| RH08 |
51.7 ± 1.6 |
401.7 ± 9.8 |
2.38 ± 0.31 |
| RH09 |
49.8 ± 1.7 |
401.6 ± 9.8 |
2.38 ± 0.31 |
| RH10 |
49.8 ± 1.7 |
401.6 ± 9.8 |
2.38 ± 0.31 |
| Average |
52.8 |
398.9 |
2.38 |
| Median |
52.7 |
401.5 |
2.38 |
| Deviation |
4.2 |
4.8 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
73.8 ± 1.2 |
13.5 ± 0.3 |
15.7 ± 0.4 |
39.0 ± 0.5 |
5.48 ± 0.16 |
1.89 ± 0.05 |
| VC |
78.7 ± 1.2 |
9.3 ± 0.2 |
11.1 ± 0.3 |
40.2 ± 0.6 |
8.51 ± 0.23 |
1.96 ± 0.04 |
| MX1 |
78.0 ± 1.2 |
12.4 ± 0.2 |
14.6 ± 0.4 |
39.3 ± 0.5 |
6.27 ± 0.18 |
1.98 ± 0.05 |
| MX2 |
78.2 ± 1.2 |
12.3 ± 0.2 |
14.5 ± 0.4 |
39.3 ± 0.5 |
6.36 ± 0.18 |
1.99 ± 0.05 |
| MX3 |
78.3 ± 1.2 |
12.2 ± 0.2 |
14.4 ± 0.4 |
39.4 ± 0.5 |
6.43 ± 0.18 |
1.99 ± 0.05 |
| RH8 |
77.7 ± 1.2 |
12.8 ± 0.2 |
15.0 ± 0.4 |
39.2 ± 0.5 |
6.10 ± 0.17 |
1.98 ± 0.05 |
| RH9 |
76.9 ± 1.1 |
13.3 ± 0.3 |
15.6 ± 0.4 |
39.0 ± 0.5 |
5.77 ± 0.17 |
1.97 ± 0.05 |
| RH10 |
76.9 ± 1.1 |
13.3 ± 0.3 |
15.6 ± 0.4 |
39.0 ± 0.5 |
5.77 ± 0.17 |
1.97 ± 0.05 |
| Average |
77.3 |
12.4 |
14.5 |
39.3 |
6.3 |
2.0 |
| Median |
78.0 |
12.8 |
15.0 |
39.3 |
6.3 |
2.0 |
| Deviation |
1.5 |
1.4 |
1.5 |
0.4 |
0.9 |
0.0 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
29.7 ± 3.3 |
17.8 ± 1.1 |
20.3 ± 1.6 |
53.6 ± 2.4 |
1.68 ± 0.26 |
0.56 ± 0.08 |
| VC |
32.1 ± 2.7 |
12.3 ± 0.8 |
14.4 ± 1.1 |
55.1 ± 2.5 |
2.63 ± 0.34 |
0.59 ± 0.07 |
| MX1 |
32.1 ± 2.9 |
16.5 ± 1.0 |
18.9 ± 1.5 |
54.0 ± 2.4 |
1.96 ± 0.27 |
0.60 ± 0.08 |
| MX2 |
32.2 ± 2.9 |
16.3 ± 1.0 |
18.7 ± 1.5 |
54.1 ± 2.4 |
1.99 ± 0.27 |
0.60 ± 0.08 |
| MX3 |
32.3 ± 2.9 |
16.1 ± 1.0 |
18.6 ± 1.5 |
54.1 ± 2.4 |
2.02 ± 0.27 |
0.60 ± 0.08 |
| RH8 |
32.0 ± 2.9 |
16.9 ± 1.1 |
19.4 ± 1.5 |
53.9 ± 2.4 |
1.91 ± 0.26 |
0.60 ± 0.08 |
| RH9 |
31.6 ± 2.9 |
17.6 ± 1.1 |
20.1 ± 1.6 |
53.6 ± 2.4 |
1.80 ± 0.25 |
0.59 ± 0.08 |
| RH10 |
31.6 ± 2.9 |
17.6 ± 1.1 |
20.1 ± 1.6 |
53.6 ± 2.4 |
1.80 ± 0.25 |
0.59 ± 0.08 |
| Average |
31.7 |
16.4 |
18.8 |
54.0 |
2.0 |
0.6 |
| Median |
32.1 |
16.9 |
19.4 |
54.0 |
2.0 |
0.6 |
| Deviation |
0.9 |
1.8 |
1.9 |
0.5 |
0.3 |
0.0 |
Survey interval (About, Top)
Selected
data (About, Top)
|
Key plasma parameters
|
Velocity
|
Magnetic Field
|
Simple
Methods
(About, Top)
Rankine Chi^2
Contour (About, Top)
Shock
Speed (About, Top)
Theta Bn (About, Top)
Mach Numbers (About, Top)
Page updated Fri Jun 13 11:06:02 2014
Michael L Stevens
(mstevens@cfa.harvard.edu)
| 
