Database: Wind Shock Analysis
Event ID: 19981200843
Observation time: 04/30/1998 120.36328 0843 [UT]
|
|
General
Information (About, Top)
| Year |
1998 |
| Fractional day of year |
120.363281 |
| Arrival time of shock [seconds of day] |
31387.5 ± 12.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
216.920 |
| Y GSE location of spacecraft [Re] |
2.056 |
| Z GSE location of spacecraft [Re] |
25.040 |
| Upstream plasma points selected for analysis |
0008 |
| Upstream field points selected for analysis |
0276 |
| Downstream plasma points selected for analysis |
0007
|
| Downstream field points selected for analysis |
0242 |
| Minimum chisq/dof for RH8,RH9,RH10 |
18.71, 34.82, 40.21 |
Event added to database
|
Mon Feb 14 11:06:16 2005
|
Event last processed
|
Mon Mar 30 17:41:42 2009
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
43.106 ± 6.740
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-317.0 ± 2.5 |
-364.8 ± 2.7 |
| Vy GSE [km/s] |
-6.9 ± 2.2 |
-57.0 ± 2.4 |
| Vz GSE [km/s] |
-15.7 ± 2.4 |
17.3 ± 4.7 |
| Wi [km/s] |
12.8 ± 0.7 |
30.0 ± 1.4 |
| We [km/s] |
405.6 ± 20.6 |
948.3 ± 45.8 |
| Ni [n/cc] |
11.6 ± 0.6 |
34.5 ± 1.9 |
| Bx GSE [nT] |
0.8 ± 0.3 |
3.5 ± 0.7 |
| By GSE [nT] |
0.3 ± 0.2 |
-1.9 ± 1.1 |
| Bz GSE [nT] |
0.6 ± 0.4 |
1.0 ± 1.4 |
Plasma Beta
|
3.856 ± 2.653
|
3.458 ± 3.257
|
Sound Speed [km/s]
|
16.56 ± 0.84
|
38.71 ± 1.87
|
Alfven Speed [km/s]
|
7.33 ± 1.94
|
16.58 ± 2.03
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.569 ± 0.347 |
-0.663 ± 0.320 |
-0.486 ± 0.444 |
-29.11 ± 27.01 |
229.37 ± 27.05 |
| VC |
-0.624 ± 0.034 |
-0.654 ± 0.033 |
0.429 ± 0.400 |
25.39 ± 3.14 |
226.34 ± 2.60 |
| MX1 |
-0.712 ± 0.429 |
-0.592 ± 0.490 |
0.379 ± 0.359 |
22.25 ± 37.00 |
219.74 ± 37.36 |
| MX2 |
-0.611 ± 0.148 |
-0.669 ± 0.135 |
0.423 ± 0.396 |
25.02 ± 3.90 |
227.59 ± 12.54 |
| MX3 |
-0.614 ± 0.144 |
-0.669 ± 0.133 |
0.419 ± 0.392 |
24.76 ± 4.48 |
227.43 ± 12.19 |
| RH08 |
-0.690 ± 0.011 |
-0.613 ± 0.012 |
0.385 ± 0.365 |
22.67 ± 0.72 |
221.62 ± 0.97 |
| RH09 |
-0.352 ± 0.067 |
-0.681 ± 0.051 |
-0.642 ± 0.535 |
-39.98 ± 3.92 |
242.67 ± 5.35 |
| RH10 |
-0.361 ± 0.065 |
-0.642 ± 0.053 |
-0.676 ± 0.547 |
-42.53 ± 3.99 |
240.67 ± 5.41 |
| Average |
-0.567 |
-0.648 |
0.029 |
1.059 |
229.428 |
| Median |
-0.611 |
-0.654 |
0.385 |
22.673 |
227.590 |
| Deviation |
0.137 |
0.031 |
0.525 |
31.932 |
8.226 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
28.2 ± 18.6 |
260.3 ± 5.4 |
3.03 ± 0.21 |
| VC |
68.0 ± 9.2 |
310.3 ± 6.4 |
3.03 ± 0.21 |
| MX1 |
63.8 ± 9.5 |
337.8 ± 6.3 |
3.03 ± 0.21 |
| MX2 |
68.0 ± 8.9 |
306.5 ± 6.4 |
3.03 ± 0.21 |
| MX3 |
67.8 ± 8.9 |
307.5 ± 6.4 |
3.03 ± 0.21 |
| RH08 |
64.6 ± 9.3 |
331.2 ± 6.3 |
3.03 ± 0.21 |
| RH09 |
30.8 ± 24.9 |
171.1 ± 5.4 |
3.03 ± 0.21 |
| RH10 |
29.5 ± 24.6 |
170.5 ± 5.4 |
3.03 ± 0.21 |
| Average |
52.6 |
274.4 |
3.03 |
| Median |
64.6 |
307.5 |
3.03 |
| Deviation |
19.2 |
68.0 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
67.8 ± 1.5 |
6.3 ± 1.6 |
6.5 ± 1.7 |
17.0 ± 0.9 |
11.54 ± 3.41 |
3.99 ± 0.22 |
| VC |
114.8 ± 1.8 |
2.5 ± 0.6 |
2.7 ± 0.7 |
18.0 ± 1.0 |
48.45 ± 13.26 |
6.39 ± 0.35 |
| MX1 |
114.0 ± 1.9 |
3.0 ± 0.7 |
3.2 ± 0.9 |
17.9 ± 1.0 |
40.73 ± 11.10 |
6.37 ± 0.33 |
| MX2 |
114.8 ± 1.8 |
2.5 ± 0.6 |
2.7 ± 0.7 |
18.0 ± 1.0 |
48.46 ± 13.28 |
6.39 ± 0.35 |
| MX3 |
114.8 ± 1.8 |
2.5 ± 0.6 |
2.8 ± 0.7 |
18.0 ± 1.0 |
47.91 ± 13.13 |
6.39 ± 0.35 |
| RH8 |
114.4 ± 1.8 |
2.9 ± 0.7 |
3.1 ± 0.8 |
18.0 ± 1.0 |
42.00 ± 11.47 |
6.39 ± 0.34 |
| RH9 |
44.8 ± 1.9 |
6.1 ± 1.5 |
6.3 ± 1.7 |
17.1 ± 0.9 |
7.87 ± 2.38 |
2.63 ± 0.19 |
| RH10 |
41.0 ± 1.9 |
6.2 ± 1.5 |
6.4 ± 1.7 |
17.1 ± 0.9 |
7.08 ± 2.14 |
2.41 ± 0.18 |
| Average |
90.8 |
4.0 |
4.2 |
17.6 |
31.8 |
5.1 |
| Median |
114.4 |
3.0 |
3.2 |
18.0 |
42.0 |
6.4 |
| Deviation |
33.7 |
1.8 |
1.8 |
0.5 |
19.2 |
1.8 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
23.4 ± 2.8 |
14.3 ± 1.6 |
14.6 ± 1.8 |
39.7 ± 1.7 |
1.65 ± 0.20 |
0.59 ± 0.07 |
| VC |
38.1 ± 4.3 |
5.7 ± 0.6 |
6.2 ± 0.8 |
41.8 ± 1.4 |
6.70 ± 1.13 |
0.91 ± 0.12 |
| MX1 |
37.8 ± 4.2 |
6.8 ± 0.7 |
7.3 ± 0.9 |
41.6 ± 1.4 |
5.64 ± 0.92 |
0.91 ± 0.12 |
| MX2 |
38.0 ± 4.3 |
5.7 ± 0.6 |
6.2 ± 0.8 |
41.8 ± 1.4 |
6.71 ± 1.12 |
0.91 ± 0.12 |
| MX3 |
38.1 ± 4.3 |
5.8 ± 0.6 |
6.3 ± 0.8 |
41.8 ± 1.4 |
6.63 ± 1.11 |
0.91 ± 0.12 |
| RH8 |
38.0 ± 4.2 |
6.6 ± 0.7 |
7.1 ± 0.9 |
41.6 ± 1.4 |
5.82 ± 0.96 |
0.91 ± 0.12 |
| RH9 |
15.1 ± 3.0 |
13.8 ± 1.6 |
14.2 ± 1.7 |
39.8 ± 1.6 |
1.09 ± 0.19 |
0.38 ± 0.07 |
| RH10 |
13.8 ± 3.1 |
14.0 ± 1.6 |
14.4 ± 1.8 |
39.7 ± 1.7 |
0.98 ± 0.19 |
0.35 ± 0.08 |
| Average |
30.3 |
9.1 |
9.5 |
41.0 |
4.4 |
0.7 |
| Median |
38.0 |
6.8 |
7.3 |
41.6 |
5.8 |
0.9 |
| Deviation |
11.0 |
4.1 |
4.1 |
1.0 |
2.7 |
0.3 |
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)
| 
