Database: Wind Shock Analysis
Event ID: 20210791116
Observation time: 03/20/2021 79.47012 1116 [UT]
|
|
General
Information (About, Top)
| Year |
2021 |
| Fractional day of year |
79.470122 |
| Arrival time of shock [seconds of day] |
40618.5 ± 80.0 |
| Shock type |
FR |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
220.300 |
| Y GSE location of spacecraft [Re] |
-101.748 |
| Z GSE location of spacecraft [Re] |
2.347 |
| Upstream plasma points selected for analysis |
0008 |
| Upstream field points selected for analysis |
0260 |
| Downstream plasma points selected for analysis |
0005
|
| Downstream field points selected for analysis |
0187 |
| Minimum chisq/dof for RH8,RH9,RH10 |
6.69, 10.78, 11.38 |
Event added to database
|
Wed Jan 12 15:36:45 2022
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Event last processed
|
Fri Jan 14 11:25:31 2022
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
57.960 ± 2.004
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-522.2 ± 8.9 |
-628.0 ± 5.4 |
| Vy GSE [km/s] |
105.3 ± 15.1 |
31.9 ± 11.4 |
| Vz GSE [km/s] |
-24.9 ± 13.2 |
-45.1 ± 5.5 |
| Wi [km/s] |
108.0 ± 11.4 |
66.0 ± 2.4 |
| We [km/s] |
3415.0 ± 359.9 |
2085.5 ± 76.9 |
| Ni [n/cc] |
10.1 ± 1.1 |
3.5 ± 0.2 |
| Bx GSE [nT] |
6.0 ± 1.6 |
3.4 ± 0.8 |
| By GSE [nT] |
-3.9 ± 1.8 |
-1.9 ± 1.6 |
| Bz GSE [nT] |
-1.1 ± 4.9 |
-3.1 ± 0.6 |
Plasma Beta
|
3.790 ± 3.483
|
1.185 ± 1.199
|
Sound Speed [km/s]
|
139.42 ± 14.69
|
85.14 ± 3.14
|
Alfven Speed [km/s]
|
60.73 ± 12.55
|
60.71 ± 1.31
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.838 ± 0.378 |
0.455 ± 0.635 |
0.302 ± 0.292 |
17.57 ± 35.28 |
151.52 ± 42.98 |
| VC |
-0.816 ± 0.054 |
-0.557 ± 0.077 |
-0.151 ± 0.150 |
-8.68 ± 5.77 |
214.32 ± 5.37 |
| MX1 |
-0.996 ± 0.085 |
-0.079 ± 1.066 |
-0.042 ± 0.042 |
-2.43 ± 16.37 |
184.52 ± 61.34 |
| MX2 |
-0.989 ± 0.062 |
0.009 ± 0.824 |
0.151 ± 0.149 |
8.66 ± 23.58 |
179.46 ± 47.73 |
| MX3 |
-0.941 ± 0.288 |
-0.335 ± 0.810 |
-0.046 ± 0.046 |
-2.64 ± 16.00 |
199.57 ± 49.30 |
| RH08 |
-0.748 ± 0.020 |
0.641 ± 0.023 |
0.173 ± 0.171 |
9.97 ± 1.70 |
139.39 ± 1.77 |
| RH09 |
-0.973 ± 0.016 |
-0.199 ± 0.069 |
-0.117 ± 0.117 |
-6.74 ± 4.01 |
191.53 ± 4.07 |
| RH10 |
-0.973 ± 0.016 |
-0.199 ± 0.069 |
-0.117 ± 0.117 |
-6.74 ± 4.01 |
191.53 ± 4.07 |
| Average |
-0.909 |
-0.033 |
0.019 |
1.121 |
181.481 |
| Median |
-0.941 |
-0.079 |
-0.042 |
-2.430 |
191.532 |
| Deviation |
0.095 |
0.399 |
0.167 |
9.651 |
24.757 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
30.8 ± 20.9 |
449.7 ± 2.1 |
0.35 ± 0.04 |
| VC |
71.4 ± 15.0 |
303.2 ± 3.3 |
0.35 ± 0.04 |
| MX1 |
47.2 ± 15.8 |
454.1 ± 2.2 |
0.35 ± 0.04 |
| MX2 |
42.3 ± 18.1 |
461.0 ± 2.0 |
0.35 ± 0.04 |
| MX3 |
58.6 ± 15.0 |
389.3 ± 2.8 |
0.35 ± 0.04 |
| RH08 |
31.9 ± 16.4 |
438.5 ± 2.3 |
0.35 ± 0.04 |
| RH09 |
53.2 ± 15.6 |
424.5 ± 2.5 |
0.35 ± 0.04 |
| RH10 |
53.2 ± 15.6 |
424.5 ± 15.8 |
0.35 ± 0.04 |
| Average |
48.6 |
418.1 |
0.35 |
| Median |
53.2 |
438.5 |
0.35 |
| Deviation |
13.6 |
51.6 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
-28.3 ± 8.3 |
50.3 ± 9.4 |
52.1 ± 10.8 |
143.8 ± 13.1 |
-0.58 ± 0.21 |
-0.20 ± 0.05 |
| VC |
-68.3 ± 14.5 |
17.6 ± 2.9 |
19.3 ± 4.0 |
151.7 ± 11.3 |
-3.93 ± 0.84 |
-0.45 ± 0.10 |
| MX1 |
-58.9 ± 9.8 |
38.7 ± 6.8 |
41.2 ± 8.5 |
147.6 ± 12.1 |
-1.55 ± 0.27 |
-0.40 ± 0.07 |
| MX2 |
-52.4 ± 7.7 |
42.5 ± 7.6 |
44.9 ± 9.3 |
146.5 ± 12.4 |
-1.26 ± 0.24 |
-0.36 ± 0.05 |
| MX3 |
-68.2 ± 11.8 |
29.2 ± 5.0 |
31.6 ± 6.5 |
149.9 ± 11.6 |
-2.38 ± 0.45 |
-0.46 ± 0.08 |
| RH8 |
-15.1 ± 9.7 |
49.7 ± 9.3 |
51.6 ± 10.7 |
144.1 ± 13.0 |
-0.31 ± 0.21 |
-0.10 ± 0.07 |
| RH9 |
-65.7 ± 11.3 |
33.9 ± 5.8 |
36.4 ± 7.5 |
148.8 ± 11.8 |
-1.97 ± 0.35 |
-0.44 ± 0.08 |
| RH10 |
-65.7 ± 11.3 |
33.9 ± 5.8 |
36.4 ± 7.5 |
148.8 ± 11.8 |
-1.97 ± 0.35 |
-0.44 ± 0.08 |
| Average |
-52.8 |
37.0 |
39.2 |
147.7 |
-1.7 |
-0.4 |
| Median |
-58.9 |
38.7 |
41.2 |
148.8 |
-1.5 |
-0.4 |
| Deviation |
20.2 |
10.9 |
10.9 |
2.7 |
1.1 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
-77.5 ± 2.3 |
47.6 ± 0.5 |
52.1 ± 1.1 |
93.1 ± 2.3 |
-1.63 ± 0.06 |
-0.83 ± 0.02 |
| VC |
-198.6 ± 9.8 |
15.9 ± 0.1 |
19.3 ± 0.4 |
103.4 ± 1.9 |
-12.48 ± 0.64 |
-1.92 ± 0.08 |
| MX1 |
-170.9 ± 6.0 |
35.7 ± 0.3 |
41.2 ± 0.9 |
98.3 ± 2.0 |
-4.79 ± 0.19 |
-1.74 ± 0.05 |
| MX2 |
-153.3 ± 6.0 |
39.5 ± 0.3 |
44.9 ± 1.0 |
96.9 ± 2.1 |
-3.88 ± 0.17 |
-1.58 ± 0.05 |
| MX3 |
-193.3 ± 8.5 |
26.6 ± 0.2 |
31.6 ± 0.7 |
101.2 ± 2.0 |
-7.27 ± 0.34 |
-1.91 ± 0.07 |
| RH8 |
-43.7 ± 3.3 |
46.9 ± 0.5 |
51.5 ± 1.1 |
93.5 ± 2.2 |
-0.93 ± 0.07 |
-0.47 ± 0.04 |
| RH9 |
-185.6 ± 6.8 |
31.0 ± 0.2 |
36.4 ± 0.8 |
99.9 ± 2.0 |
-5.98 ± 0.24 |
-1.86 ± 0.05 |
| RH10 |
-185.6 ± 6.8 |
31.0 ± 0.2 |
36.4 ± 0.8 |
99.9 ± 2.0 |
-5.98 ± 0.24 |
-1.86 ± 0.05 |
| Average |
-151.0 |
34.3 |
39.2 |
98.3 |
-5.4 |
-1.5 |
| Median |
-170.9 |
35.7 |
41.2 |
99.9 |
-4.8 |
-1.7 |
| Deviation |
58.3 |
10.6 |
10.8 |
3.6 |
3.6 |
0.6 |
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 Jan 14 13:41:28 2022
Michael L Stevens
(mstevens@cfa.harvard.edu)
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