Database: Wind Shock Analysis
Event ID: 20182320811
Observation time: 08/20/2018 232.34151 0811 [UT]
|
|
General
Information (About, Top)
| Year |
2018 |
| Fractional day of year |
232.341510 |
| Arrival time of shock [seconds of day] |
29506.5 ± 30.0 |
| Shock type |
FR |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
260.384 |
| Y GSE location of spacecraft [Re] |
40.289 |
| Z GSE location of spacecraft [Re] |
6.057 |
| Upstream plasma points selected for analysis |
0003 |
| Upstream field points selected for analysis |
0101 |
| Downstream plasma points selected for analysis |
0006
|
| Downstream field points selected for analysis |
0183 |
| Minimum chisq/dof for RH8,RH9,RH10 |
11.76, 24.95, 28.29 |
Event added to database
|
Tue Dec 25 19:48:06 2018
|
Event last processed
|
Tue Dec 10 18:51:14 2019
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
50.954 ± 13.067
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-579.0 ± 4.3 |
-619.7 ± 8.0 |
| Vy GSE [km/s] |
21.4 ± 5.5 |
6.2 ± 4.7 |
| Vz GSE [km/s] |
-31.6 ± 10.0 |
-1.9 ± 4.9 |
| Wi [km/s] |
67.7 ± 0.5 |
58.5 ± 2.1 |
| We [km/s] |
2140.5 ± 15.3 |
1849.1 ± 65.2 |
| Ni [n/cc] |
4.8 ± 0.2 |
3.2 ± 0.1 |
| Bx GSE [nT] |
3.9 ± 0.5 |
2.9 ± 0.4 |
| By GSE [nT] |
-9.0 ± 0.2 |
-5.6 ± 0.5 |
| Bz GSE [nT] |
2.2 ± 0.6 |
1.4 ± 0.3 |
Plasma Beta
|
0.460 ± 0.469
|
0.548 ± 0.568
|
Sound Speed [km/s]
|
87.38 ± 0.62
|
75.49 ± 2.66
|
Alfven Speed [km/s]
|
99.85 ± 2.45
|
79.15 ± 2.93
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.992 ± 0.095 |
-0.000 ± 0.588 |
0.125 ± 0.125 |
7.20 ± 43.58 |
180.01 ± 33.96 |
| VC |
-0.779 ± 0.087 |
-0.292 ± 0.119 |
0.555 ± 0.490 |
33.72 ± 8.38 |
200.52 ± 8.48 |
| MX1 |
-0.840 ± 0.091 |
-0.166 ± 0.189 |
0.516 ± 0.465 |
31.10 ± 9.41 |
191.16 ± 12.84 |
| MX2 |
-0.843 ± 0.086 |
-0.166 ± 0.188 |
0.511 ± 0.461 |
30.75 ± 8.86 |
191.17 ± 12.75 |
| MX3 |
-0.836 ± 0.100 |
-0.165 ± 0.190 |
0.523 ± 0.469 |
31.53 ± 10.41 |
191.17 ± 12.96 |
| RH08 |
-0.609 ± 0.027 |
-0.332 ± 0.026 |
-0.721 ± 0.558 |
-46.11 ± 2.16 |
208.58 ± 2.08 |
| RH09 |
-0.992 ± 0.009 |
-0.078 ± 0.069 |
0.095 ± 0.095 |
5.45 ± 4.02 |
184.51 ± 3.99 |
| RH10 |
-0.992 ± 0.009 |
-0.078 ± 0.069 |
0.095 ± 0.095 |
5.45 ± 4.02 |
184.51 ± 3.99 |
| Average |
-0.861 |
-0.160 |
0.213 |
12.386 |
191.454 |
| Median |
-0.840 |
-0.165 |
0.511 |
30.751 |
191.168 |
| Deviation |
0.133 |
0.111 |
0.431 |
26.869 |
9.282 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
69.0 ± 3.6 |
480.4 ± 6.6 |
0.68 ± 0.05 |
| VC |
85.5 ± 4.3 |
308.6 ± 8.8 |
0.68 ± 0.05 |
| MX1 |
86.2 ± 4.3 |
352.2 ± 8.5 |
0.68 ± 0.05 |
| MX2 |
86.1 ± 4.3 |
354.3 ± 8.5 |
0.68 ± 0.05 |
| MX3 |
86.4 ± 4.3 |
349.4 ± 8.5 |
0.68 ± 0.05 |
| RH08 |
84.4 ± 1.7 |
351.8 ± 4.2 |
0.68 ± 0.05 |
| RH09 |
72.8 ± 3.5 |
478.4 ± 6.7 |
0.68 ± 0.05 |
| RH10 |
72.8 ± 3.5 |
478.4 ± 27.5 |
0.68 ± 0.05 |
| Average |
80.4 |
394.2 |
0.68 |
| Median |
85.5 |
354.3 |
0.68 |
| Deviation |
7.4 |
71.8 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
-90.1 ± 5.4 |
23.9 ± 0.2 |
35.8 ± 0.9 |
130.5 ± 1.7 |
-3.76 ± 0.25 |
-0.69 ± 0.05 |
| VC |
-118.7 ± 10.1 |
5.2 ± 0.0 |
7.9 ± 0.2 |
132.6 ± 1.7 |
-22.77 ± 2.10 |
-0.90 ± 0.08 |
| MX1 |
-114.5 ± 9.4 |
4.3 ± 0.0 |
6.5 ± 0.2 |
132.6 ± 1.7 |
-26.55 ± 2.37 |
-0.86 ± 0.08 |
| MX2 |
-114.2 ± 9.4 |
4.4 ± 0.0 |
6.7 ± 0.2 |
132.6 ± 1.7 |
-25.85 ± 2.31 |
-0.86 ± 0.08 |
| MX3 |
-114.7 ± 9.5 |
4.2 ± 0.0 |
6.3 ± 0.2 |
132.6 ± 1.7 |
-27.65 ± 2.48 |
-0.87 ± 0.08 |
| RH8 |
-16.4 ± 3.9 |
6.5 ± 0.1 |
9.8 ± 0.2 |
132.5 ± 1.7 |
-2.53 ± 0.57 |
-0.12 ± 0.03 |
| RH9 |
-91.5 ± 5.5 |
19.6 ± 0.2 |
29.5 ± 0.7 |
131.2 ± 1.7 |
-4.67 ± 0.31 |
-0.70 ± 0.05 |
| RH10 |
-91.5 ± 5.5 |
19.6 ± 0.2 |
29.5 ± 0.7 |
131.2 ± 1.7 |
-4.67 ± 0.31 |
-0.70 ± 0.05 |
| Average |
-94.0 |
11.0 |
16.5 |
132.0 |
-14.8 |
-0.7 |
| Median |
-91.5 |
6.5 |
9.8 |
132.6 |
-4.7 |
-0.7 |
| Deviation |
33.6 |
8.5 |
12.7 |
0.9 |
11.7 |
0.3 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
-134.1 ± 8.0 |
19.9 ± 0.5 |
28.4 ± 1.1 |
107.6 ± 2.7 |
-6.74 ± 0.25 |
-1.25 ± 0.05 |
| VC |
-171.3 ± 6.9 |
4.3 ± 0.1 |
6.3 ± 0.2 |
109.3 ± 2.7 |
-39.53 ± 0.76 |
-1.57 ± 0.03 |
| MX1 |
-166.4 ± 7.3 |
3.6 ± 0.1 |
5.2 ± 0.2 |
109.4 ± 2.7 |
-46.46 ± 1.03 |
-1.52 ± 0.03 |
| MX2 |
-166.2 ± 7.3 |
3.7 ± 0.1 |
5.3 ± 0.2 |
109.3 ± 2.7 |
-45.27 ± 1.01 |
-1.52 ± 0.03 |
| MX3 |
-166.7 ± 7.3 |
3.4 ± 0.1 |
5.0 ± 0.2 |
109.4 ± 2.7 |
-48.36 ± 1.07 |
-1.52 ± 0.03 |
| RH8 |
-24.7 ± 6.8 |
5.4 ± 0.1 |
7.8 ± 0.3 |
109.3 ± 2.7 |
-4.60 ± 1.20 |
-0.23 ± 0.06 |
| RH9 |
-135.8 ± 8.0 |
16.3 ± 0.4 |
23.4 ± 0.9 |
108.2 ± 2.7 |
-8.33 ± 0.31 |
-1.25 ± 0.05 |
| RH10 |
-135.8 ± 8.0 |
16.3 ± 0.4 |
23.4 ± 0.9 |
108.2 ± 2.7 |
-8.33 ± 0.31 |
-1.25 ± 0.05 |
| Average |
-137.6 |
9.1 |
13.1 |
108.8 |
-26.0 |
-1.3 |
| Median |
-135.8 |
5.4 |
7.8 |
109.3 |
-8.3 |
-1.3 |
| Deviation |
48.4 |
7.1 |
10.1 |
0.7 |
20.4 |
0.4 |
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 Wed Jan 22 21:47:00 2020
Michael L Stevens
(mstevens@cfa.harvard.edu)
| 
