Database: Wind Shock Analysis
Event ID: 20181092346
Observation time: 04/19/2018 109.99054 2346 [UT]
|
|
General
Information (About, Top)
| Year |
2018 |
| Fractional day of year |
109.990538 |
| Arrival time of shock [seconds of day] |
85582.5 ± 21.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
221.216 |
| Y GSE location of spacecraft [Re] |
-101.183 |
| Z GSE location of spacecraft [Re] |
6.869 |
| Upstream plasma points selected for analysis |
0009 |
| Upstream field points selected for analysis |
0282 |
| Downstream plasma points selected for analysis |
0007
|
| Downstream field points selected for analysis |
0249 |
| Minimum chisq/dof for RH8,RH9,RH10 |
8.46, 23.51, 24.72 |
Event added to database
|
Fri Jul 27 14:25:18 2018
|
Event last processed
|
Tue Dec 10 18:39:34 2019
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
44.065 ± 0.909
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-292.1 ± 1.1 |
-333.6 ± 1.4 |
| Vy GSE [km/s] |
-1.1 ± 0.7 |
-35.8 ± 3.4 |
| Vz GSE [km/s] |
-4.4 ± 0.9 |
-14.6 ± 1.6 |
| Wi [km/s] |
16.4 ± 0.3 |
26.7 ± 1.3 |
| We [km/s] |
517.9 ± 10.1 |
843.4 ± 40.0 |
| Ni [n/cc] |
14.8 ± 0.6 |
39.0 ± 3.9 |
| Bx GSE [nT] |
0.7 ± 0.1 |
2.0 ± 0.9 |
| By GSE [nT] |
2.0 ± 0.2 |
1.1 ± 1.4 |
| Bz GSE [nT] |
-2.1 ± 0.2 |
-5.0 ± 0.4 |
Plasma Beta
|
0.941 ± 0.959
|
1.812 ± 1.845
|
Sound Speed [km/s]
|
21.14 ± 0.41
|
34.43 ± 1.63
|
Alfven Speed [km/s]
|
16.93 ± 0.67
|
20.20 ± 2.26
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.348 ± 0.659 |
-0.915 ± 0.259 |
0.206 ± 0.203 |
11.91 ± 18.89 |
249.17 ± 41.26 |
| VC |
-0.754 ± 0.040 |
-0.631 ± 0.047 |
-0.185 ± 0.183 |
-10.65 ± 1.88 |
219.91 ± 3.59 |
| MX1 |
-0.733 ± 0.194 |
-0.675 ± 0.210 |
-0.085 ± 0.084 |
-4.85 ± 19.03 |
222.63 ± 16.35 |
| MX2 |
-0.766 ± 0.043 |
-0.622 ± 0.052 |
-0.164 ± 0.162 |
-9.43 ± 4.89 |
219.08 ± 3.83 |
| MX3 |
-0.769 ± 0.047 |
-0.615 ± 0.058 |
-0.174 ± 0.172 |
-10.02 ± 3.78 |
218.67 ± 4.29 |
| RH08 |
-0.879 ± 0.006 |
-0.459 ± 0.012 |
-0.128 ± 0.128 |
-7.38 ± 0.53 |
207.58 ± 0.76 |
| RH09 |
-0.940 ± 0.024 |
0.279 ± 0.068 |
-0.196 ± 0.193 |
-11.28 ± 3.96 |
163.45 ± 4.16 |
| RH10 |
-0.945 ± 0.023 |
0.263 ± 0.069 |
-0.196 ± 0.193 |
-11.28 ± 3.96 |
164.46 ± 4.16 |
| Average |
-0.767 |
-0.422 |
-0.115 |
-6.622 |
208.119 |
| Median |
-0.766 |
-0.615 |
-0.164 |
-9.428 |
219.081 |
| Deviation |
0.189 |
0.446 |
0.135 |
7.802 |
29.684 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
32.1 ± 4.8 |
173.9 ± 1.0 |
2.63 ± 0.27 |
| VC |
61.5 ± 3.6 |
308.9 ± 0.9 |
2.63 ± 0.27 |
| MX1 |
55.1 ± 3.6 |
302.1 ± 0.9 |
2.63 ± 0.27 |
| MX2 |
60.8 ± 3.5 |
312.2 ± 0.9 |
2.63 ± 0.27 |
| MX3 |
61.5 ± 3.5 |
313.1 ± 0.9 |
2.63 ± 0.27 |
| RH08 |
64.7 ± 2.9 |
343.1 ± 0.8 |
2.63 ± 0.27 |
| RH09 |
83.9 ± 1.9 |
324.7 ± 0.5 |
2.63 ± 0.27 |
| RH10 |
84.6 ± 1.9 |
327.4 ± 4.3 |
2.63 ± 0.27 |
| Average |
63.0 |
300.7 |
2.63 |
| Median |
61.5 |
313.1 |
2.63 |
| Deviation |
16.6 |
52.8 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
72.1 ± 0.5 |
12.7 ± 0.3 |
14.3 ± 0.6 |
24.0 ± 0.4 |
5.70 ± 0.13 |
3.01 ± 0.05 |
| VC |
87.2 ± 0.7 |
6.5 ± 0.2 |
8.1 ± 0.3 |
26.3 ± 0.4 |
13.45 ± 0.33 |
3.31 ± 0.06 |
| MX1 |
86.9 ± 0.7 |
7.9 ± 0.2 |
9.7 ± 0.4 |
25.9 ± 0.4 |
11.02 ± 0.27 |
3.35 ± 0.06 |
| MX2 |
87.1 ± 0.7 |
6.7 ± 0.2 |
8.3 ± 0.3 |
26.3 ± 0.4 |
13.10 ± 0.33 |
3.32 ± 0.06 |
| MX3 |
87.1 ± 0.7 |
6.5 ± 0.2 |
8.1 ± 0.3 |
26.3 ± 0.4 |
13.42 ± 0.33 |
3.31 ± 0.06 |
| RH8 |
85.3 ± 0.8 |
5.8 ± 0.1 |
7.2 ± 0.3 |
26.5 ± 0.4 |
14.74 ± 0.39 |
3.22 ± 0.07 |
| RH9 |
49.6 ± 1.2 |
1.4 ± 0.0 |
1.8 ± 0.1 |
27.1 ± 0.5 |
35.32 ± 1.32 |
1.83 ± 0.06 |
| RH10 |
50.8 ± 1.2 |
1.2 ± 0.0 |
1.6 ± 0.1 |
27.1 ± 0.5 |
40.95 ± 1.51 |
1.88 ± 0.06 |
| Average |
75.7 |
6.1 |
7.4 |
26.2 |
18.5 |
2.9 |
| Median |
86.9 |
6.5 |
8.1 |
26.3 |
13.4 |
3.3 |
| Deviation |
16.6 |
3.6 |
4.1 |
1.0 |
12.5 |
0.7 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
28.0 ± 2.9 |
16.1 ± 1.5 |
17.1 ± 1.9 |
36.6 ± 1.3 |
1.76 ± 0.32 |
0.77 ± 0.10 |
| VC |
32.1 ± 1.2 |
8.5 ± 0.7 |
9.6 ± 1.1 |
39.1 ± 1.4 |
3.82 ± 0.38 |
0.82 ± 0.06 |
| MX1 |
32.2 ± 1.5 |
10.3 ± 0.8 |
11.5 ± 1.3 |
38.6 ± 1.3 |
3.16 ± 0.35 |
0.83 ± 0.06 |
| MX2 |
32.1 ± 1.2 |
8.7 ± 0.7 |
9.9 ± 1.1 |
39.0 ± 1.4 |
3.72 ± 0.37 |
0.82 ± 0.06 |
| MX3 |
32.1 ± 1.2 |
8.5 ± 0.7 |
9.6 ± 1.1 |
39.1 ± 1.4 |
3.80 ± 0.37 |
0.82 ± 0.06 |
| RH8 |
31.5 ± 0.8 |
7.6 ± 0.6 |
8.6 ± 1.0 |
39.3 ± 1.4 |
4.19 ± 0.34 |
0.80 ± 0.04 |
| RH9 |
18.3 ± 2.4 |
1.8 ± 0.1 |
2.1 ± 0.2 |
39.9 ± 1.4 |
9.90 ± 0.88 |
0.46 ± 0.05 |
| RH10 |
18.7 ± 2.3 |
1.6 ± 0.1 |
1.9 ± 0.2 |
39.9 ± 1.4 |
11.47 ± 0.96 |
0.47 ± 0.05 |
| Average |
28.1 |
7.9 |
8.8 |
38.9 |
5.2 |
0.7 |
| Median |
32.1 |
8.5 |
9.6 |
39.1 |
3.8 |
0.8 |
| Deviation |
6.1 |
4.6 |
4.9 |
1.1 |
3.5 |
0.2 |
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)
| 
