Database: Wind Shock Analysis
Event ID: 20211950849
Observation time: 07/14/2021 195.36752 0849 [UT]
|
|
General
Information (About, Top)
| Year |
2021 |
| Fractional day of year |
195.367517 |
| Arrival time of shock [seconds of day] |
31753.5 ± 20.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
256.828 |
| Y GSE location of spacecraft [Re] |
62.589 |
| Z GSE location of spacecraft [Re] |
11.446 |
| Upstream plasma points selected for analysis |
0006 |
| Upstream field points selected for analysis |
0226 |
| Downstream plasma points selected for analysis |
0008
|
| Downstream field points selected for analysis |
0262 |
| Minimum chisq/dof for RH8,RH9,RH10 |
8.21, 23.39, 24.20 |
Event added to database
|
Thu Jan 13 10:30:01 2022
|
Event last processed
|
Fri Jan 14 11:41:53 2022
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
72.992 ± 7.818
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-331.4 ± 1.6 |
-355.3 ± 0.7 |
| Vy GSE [km/s] |
-10.3 ± 1.1 |
-22.1 ± 1.7 |
| Vz GSE [km/s] |
-33.8 ± 0.9 |
-31.0 ± 1.4 |
| Wi [km/s] |
19.5 ± 0.7 |
22.6 ± 0.5 |
| We [km/s] |
616.6 ± 21.9 |
714.8 ± 17.3 |
| Ni [n/cc] |
8.4 ± 0.2 |
15.2 ± 0.2 |
| Bx GSE [nT] |
2.7 ± 0.3 |
2.1 ± 0.2 |
| By GSE [nT] |
-1.5 ± 0.1 |
-3.0 ± 0.2 |
| Bz GSE [nT] |
-0.8 ± 0.6 |
-4.0 ± 0.2 |
Plasma Beta
|
0.638 ± 0.638
|
0.564 ± 0.566
|
Sound Speed [km/s]
|
25.17 ± 0.89
|
29.18 ± 0.71
|
Alfven Speed [km/s]
|
24.45 ± 0.89
|
30.13 ± 0.98
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.947 ± 0.041 |
0.320 ± 0.122 |
0.007 ± 0.007 |
0.40 ± 3.57 |
161.31 ± 7.40 |
| VC |
-0.891 ± 0.036 |
-0.442 ± 0.071 |
0.106 ± 0.105 |
6.06 ± 3.25 |
206.37 ± 4.55 |
| MX1 |
-0.986 ± 0.014 |
0.026 ± 0.246 |
0.168 ± 0.166 |
9.64 ± 4.20 |
178.48 ± 14.32 |
| MX2 |
-0.921 ± 0.030 |
-0.260 ± 0.078 |
0.290 ± 0.281 |
16.83 ± 4.13 |
195.75 ± 4.84 |
| MX3 |
-0.879 ± 0.034 |
-0.349 ± 0.060 |
0.324 ± 0.312 |
18.89 ± 4.63 |
201.65 ± 3.85 |
| RH08 |
-0.920 ± 0.004 |
-0.171 ± 0.013 |
0.352 ± 0.337 |
20.61 ± 0.56 |
190.53 ± 0.82 |
| RH09 |
-0.977 ± 0.015 |
0.060 ± 0.071 |
0.207 ± 0.204 |
11.93 ± 3.97 |
176.49 ± 4.16 |
| RH10 |
-0.980 ± 0.014 |
0.077 ± 0.070 |
0.184 ± 0.182 |
10.62 ± 4.00 |
175.49 ± 4.11 |
| Average |
-0.938 |
-0.092 |
0.205 |
11.874 |
185.758 |
| Median |
-0.921 |
0.026 |
0.207 |
11.929 |
190.529 |
| Deviation |
0.041 |
0.256 |
0.116 |
6.783 |
15.317 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
18.6 ± 12.3 |
352.4 ± 0.4 |
1.82 ± 0.05 |
| VC |
55.4 ± 4.8 |
355.3 ± 0.4 |
1.82 ± 0.05 |
| MX1 |
28.8 ± 6.6 |
373.3 ± 0.3 |
1.82 ± 0.05 |
| MX2 |
43.7 ± 2.9 |
355.4 ± 0.4 |
1.82 ± 0.05 |
| MX3 |
48.9 ± 2.2 |
341.6 ± 0.4 |
1.82 ± 0.05 |
| RH08 |
38.9 ± 2.2 |
350.3 ± 0.4 |
1.82 ± 0.05 |
| RH09 |
26.6 ± 6.0 |
367.7 ± 0.3 |
1.82 ± 0.05 |
| RH10 |
25.9 ± 6.6 |
368.9 ± 2.2 |
1.82 ± 0.05 |
| Average |
35.9 |
358.1 |
1.82 |
| Median |
38.9 |
355.4 |
1.82 |
| Deviation |
12.8 |
10.8 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
42.0 ± 1.8 |
20.4 ± 0.6 |
23.2 ± 0.8 |
28.5 ± 0.9 |
2.05 ± 0.04 |
1.47 ± 0.03 |
| VC |
59.1 ± 1.1 |
10.4 ± 0.3 |
13.9 ± 0.5 |
33.5 ± 1.0 |
5.66 ± 0.12 |
1.76 ± 0.04 |
| MX1 |
52.6 ± 1.6 |
17.8 ± 0.5 |
21.4 ± 0.8 |
30.2 ± 0.9 |
2.95 ± 0.05 |
1.74 ± 0.03 |
| MX2 |
57.2 ± 1.2 |
13.8 ± 0.4 |
17.7 ± 0.6 |
32.3 ± 1.0 |
4.15 ± 0.08 |
1.77 ± 0.03 |
| MX3 |
57.5 ± 1.1 |
12.3 ± 0.4 |
16.1 ± 0.6 |
32.9 ± 1.0 |
4.68 ± 0.10 |
1.75 ± 0.04 |
| RH8 |
55.5 ± 1.2 |
15.1 ± 0.4 |
19.0 ± 0.7 |
31.7 ± 1.0 |
3.67 ± 0.07 |
1.75 ± 0.03 |
| RH9 |
51.6 ± 1.6 |
18.4 ± 0.5 |
21.9 ± 0.8 |
29.9 ± 0.9 |
2.80 ± 0.05 |
1.73 ± 0.03 |
| RH10 |
51.2 ± 1.6 |
18.6 ± 0.5 |
22.0 ± 0.8 |
29.8 ± 0.9 |
2.75 ± 0.05 |
1.72 ± 0.03 |
| Average |
53.3 |
15.9 |
19.4 |
31.1 |
3.6 |
1.7 |
| Median |
55.5 |
17.8 |
21.4 |
31.7 |
3.7 |
1.7 |
| Deviation |
5.4 |
3.5 |
3.3 |
1.7 |
1.2 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
23.2 ± 0.8 |
24.4 ± 0.6 |
28.6 ± 0.9 |
34.1 ± 0.8 |
0.95 ± 0.04 |
0.68 ± 0.03 |
| VC |
32.3 ± 1.1 |
12.5 ± 0.3 |
17.1 ± 0.6 |
40.1 ± 0.9 |
2.59 ± 0.04 |
0.81 ± 0.01 |
| MX1 |
28.9 ± 0.8 |
21.3 ± 0.5 |
26.4 ± 0.9 |
36.1 ± 0.8 |
1.36 ± 0.03 |
0.80 ± 0.02 |
| MX2 |
31.4 ± 1.1 |
16.5 ± 0.4 |
21.8 ± 0.7 |
38.6 ± 0.9 |
1.90 ± 0.04 |
0.81 ± 0.02 |
| MX3 |
31.5 ± 1.3 |
14.7 ± 0.3 |
19.8 ± 0.6 |
39.3 ± 0.9 |
2.14 ± 0.05 |
0.80 ± 0.02 |
| RH8 |
30.5 ± 1.1 |
18.1 ± 0.4 |
23.4 ± 0.8 |
37.9 ± 0.9 |
1.69 ± 0.04 |
0.81 ± 0.02 |
| RH9 |
28.5 ± 0.8 |
22.0 ± 0.5 |
26.9 ± 0.9 |
35.7 ± 0.8 |
1.29 ± 0.03 |
0.80 ± 0.02 |
| RH10 |
28.2 ± 0.8 |
22.2 ± 0.5 |
27.1 ± 0.9 |
35.6 ± 0.8 |
1.27 ± 0.03 |
0.79 ± 0.02 |
| Average |
29.3 |
19.0 |
23.9 |
37.2 |
1.6 |
0.8 |
| Median |
30.5 |
21.3 |
26.4 |
37.9 |
1.7 |
0.8 |
| Deviation |
2.9 |
4.2 |
4.1 |
2.1 |
0.5 |
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 Jan 14 13:39:40 2022
Michael L Stevens
(mstevens@cfa.harvard.edu)
| 
