Database: Wind Shock Analysis
Event ID: 19980490748
Observation time: 02/18/1998 49.32550 0748 [UT]
|
|
General
Information (About, Top)
| Year |
1998 |
| Fractional day of year |
49.325503 |
| Arrival time of shock [seconds of day] |
28123.5 ± 3.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
235.890 |
| Y GSE location of spacecraft [Re] |
-9.801 |
| Z GSE location of spacecraft [Re] |
-31.630 |
| Upstream plasma points selected for analysis |
0011 |
| Upstream field points selected for analysis |
0331 |
| Downstream plasma points selected for analysis |
0008
|
| Downstream field points selected for analysis |
0281 |
| Minimum chisq/dof for RH8,RH9,RH10 |
6.04, 13.37, 13.61 |
Event added to database
|
Mon Feb 14 11:06:00 2005
|
Event last processed
|
Mon Mar 30 17:34:43 2009
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
54.427 ± 1.292
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-375.6 ± 1.8 |
-407.7 ± 4.2 |
| Vy GSE [km/s] |
-21.2 ± 0.9 |
-33.4 ± 1.2 |
| Vz GSE [km/s] |
-27.9 ± 2.1 |
-19.7 ± 2.5 |
| Wi [km/s] |
29.2 ± 0.5 |
33.4 ± 0.9 |
| We [km/s] |
923.8 ± 14.9 |
1056.2 ± 29.8 |
| Ni [n/cc] |
17.2 ± 0.4 |
25.3 ± 1.4 |
| Bx GSE [nT] |
8.7 ± 0.5 |
7.2 ± 0.7 |
| By GSE [nT] |
-12.9 ± 0.3 |
-20.4 ± 0.5 |
| Bz GSE [nT] |
0.1 ± 0.3 |
1.0 ± 1.1 |
Plasma Beta
|
0.128 ± 0.128
|
0.127 ± 0.126
|
Sound Speed [km/s]
|
37.71 ± 0.61
|
43.12 ± 1.22
|
Alfven Speed [km/s]
|
81.85 ± 1.38
|
94.00 ± 1.80
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.969 ± 0.029 |
0.222 ± 0.106 |
0.105 ± 0.105 |
6.05 ± 8.39 |
167.13 ± 6.28 |
| VC |
-0.907 ± 0.024 |
-0.350 ± 0.038 |
0.234 ± 0.230 |
13.53 ± 4.86 |
201.07 ± 2.37 |
| MX1 |
-0.964 ± 0.025 |
0.212 ± 0.106 |
0.162 ± 0.161 |
9.33 ± 3.48 |
167.60 ± 6.32 |
| MX2 |
-0.963 ± 0.025 |
0.210 ± 0.107 |
0.171 ± 0.169 |
9.83 ± 3.34 |
167.67 ± 6.34 |
| MX3 |
-0.960 ± 0.027 |
0.206 ± 0.107 |
0.188 ± 0.186 |
10.85 ± 4.34 |
167.87 ± 6.40 |
| RH08 |
-0.991 ± 0.000 |
0.131 ± 0.000 |
0.017 ± 0.017 |
0.96 ± 0.83 |
172.48 ± 0.00 |
| RH09 |
-0.991 ± 0.009 |
0.113 ± 0.068 |
0.073 ± 0.072 |
4.16 ± 4.03 |
173.48 ± 3.95 |
| RH10 |
-0.991 ± 0.009 |
0.113 ± 0.068 |
0.073 ± 0.072 |
4.16 ± 4.03 |
173.48 ± 3.95 |
| Average |
-0.967 |
0.107 |
0.128 |
7.361 |
173.848 |
| Median |
-0.964 |
0.206 |
0.162 |
9.330 |
172.479 |
| Deviation |
0.028 |
0.190 |
0.073 |
4.198 |
11.349 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
43.7 ± 2.0 |
447.0 ± 11.4 |
1.46 ± 0.09 |
| VC |
77.7 ± 1.9 |
450.7 ± 12.1 |
1.46 ± 0.09 |
| MX1 |
44.6 ± 1.9 |
444.7 ± 11.8 |
1.46 ± 0.09 |
| MX2 |
44.8 ± 1.9 |
444.3 ± 11.8 |
1.46 ± 0.09 |
| MX3 |
45.2 ± 1.9 |
443.4 ± 12.0 |
1.46 ± 0.09 |
| RH08 |
48.7 ± 2.0 |
463.4 ± 11.0 |
1.46 ± 0.09 |
| RH09 |
49.8 ± 2.0 |
463.9 ± 11.4 |
1.46 ± 0.09 |
| RH10 |
49.8 ± 2.0 |
463.9 ± 11.4 |
1.46 ± 0.09 |
| Average |
50.5 |
452.7 |
1.46 |
| Median |
48.7 |
450.7 |
1.46 |
| Deviation |
11.2 |
9.4 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
90.5 ± 1.7 |
25.8 ± 0.3 |
59.2 ± 1.0 |
86.3 ± 1.2 |
3.50 ± 0.07 |
1.05 ± 0.02 |
| VC |
109.0 ± 1.9 |
7.3 ± 0.1 |
17.5 ± 0.3 |
89.8 ± 1.1 |
14.87 ± 0.30 |
1.21 ± 0.02 |
| MX1 |
91.7 ± 1.8 |
25.4 ± 0.3 |
58.2 ± 1.0 |
86.5 ± 1.2 |
3.61 ± 0.08 |
1.06 ± 0.02 |
| MX2 |
91.9 ± 1.8 |
25.3 ± 0.3 |
58.1 ± 1.0 |
86.5 ± 1.2 |
3.63 ± 0.08 |
1.06 ± 0.02 |
| MX3 |
92.3 ± 1.8 |
25.1 ± 0.3 |
57.7 ± 1.0 |
86.6 ± 1.2 |
3.67 ± 0.08 |
1.07 ± 0.02 |
| RH8 |
94.2 ± 1.8 |
23.4 ± 0.3 |
54.0 ± 0.9 |
87.0 ± 1.2 |
4.03 ± 0.08 |
1.08 ± 0.02 |
| RH9 |
96.1 ± 1.8 |
22.8 ± 0.3 |
52.8 ± 0.9 |
87.2 ± 1.1 |
4.21 ± 0.09 |
1.10 ± 0.02 |
| RH10 |
96.1 ± 1.8 |
22.8 ± 0.3 |
52.8 ± 0.9 |
87.2 ± 1.1 |
4.21 ± 0.09 |
1.10 ± 0.02 |
| Average |
95.2 |
22.3 |
51.3 |
87.1 |
5.2 |
1.1 |
| Median |
94.2 |
25.1 |
57.7 |
87.0 |
4.0 |
1.1 |
| Deviation |
5.9 |
6.2 |
13.9 |
1.1 |
3.9 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
61.3 ± 4.0 |
29.6 ± 0.7 |
68.0 ± 1.3 |
99.1 ± 1.5 |
2.07 ± 0.16 |
0.62 ± 0.04 |
| VC |
73.8 ± 4.2 |
8.4 ± 0.2 |
20.1 ± 0.4 |
103.1 ± 1.4 |
8.80 ± 0.59 |
0.72 ± 0.04 |
| MX1 |
62.1 ± 4.1 |
29.0 ± 0.7 |
66.9 ± 1.3 |
99.3 ± 1.5 |
2.14 ± 0.16 |
0.63 ± 0.04 |
| MX2 |
62.2 ± 4.1 |
29.0 ± 0.7 |
66.7 ± 1.3 |
99.3 ± 1.5 |
2.15 ± 0.16 |
0.63 ± 0.04 |
| MX3 |
62.6 ± 4.1 |
28.8 ± 0.7 |
66.3 ± 1.3 |
99.4 ± 1.5 |
2.18 ± 0.16 |
0.63 ± 0.04 |
| RH8 |
63.9 ± 4.1 |
26.8 ± 0.6 |
62.1 ± 1.2 |
99.9 ± 1.5 |
2.39 ± 0.18 |
0.64 ± 0.04 |
| RH9 |
65.1 ± 4.2 |
26.1 ± 0.6 |
60.6 ± 1.2 |
100.1 ± 1.5 |
2.50 ± 0.18 |
0.65 ± 0.04 |
| RH10 |
65.1 ± 4.2 |
26.1 ± 0.6 |
60.6 ± 1.2 |
100.1 ± 1.5 |
2.50 ± 0.18 |
0.65 ± 0.04 |
| Average |
64.5 |
25.5 |
58.9 |
100.0 |
3.1 |
0.6 |
| Median |
63.9 |
28.8 |
66.3 |
99.9 |
2.4 |
0.6 |
| Deviation |
4.0 |
7.0 |
16.0 |
1.3 |
2.3 |
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)
| 
