Database: Ace Shock Analysis
Event ID: 20021431015
Observation time: 05/23/2002 143.42774 1015 [UT]
|
|
General
Information (About, Top)
| Year |
2002 |
| Fractional day of year |
143.427743 |
| Arrival time of shock [seconds of day] |
36957.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.037 |
| Y GSE location of spacecraft [Re] |
0.006 |
| Z GSE location of spacecraft [Re] |
-0.001 |
| Upstream plasma points selected for analysis |
0010 |
| Upstream field points selected for analysis |
0037 |
| Downstream plasma points selected for analysis |
0006
|
| Downstream field points selected for analysis |
0041 |
| Minimum chisq/dof for RH8,RH9,RH10 |
32.14, 45.70, 49.67 |
Event added to database
|
Sun May 1 22:21:00 2005
|
Event last processed
|
Tue May 3 14:26:06 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.005 ± 0.001
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-423.6 ± 10.4 |
-568.6 ± 6.9 |
| Vy GSE [km/s] |
-11.4 ± 4.2 |
-36.1 ± 9.7 |
| Vz GSE [km/s] |
-42.7 ± 8.7 |
-133.2 ± 12.1 |
| Wi [km/s] |
33.1 ± 3.6 |
55.5 ± 4.7 |
| We [km/s] |
1046.3 ± 112.3 |
1754.0 ± 149.3 |
| Ni [n/cc] |
11.8 ± 2.0 |
21.2 ± 2.8 |
| Bx GSE [nT] |
-2.7 ± 1.0 |
-6.3 ± 1.6 |
| By GSE [nT] |
12.7 ± 1.2 |
30.6 ± 2.1 |
| Bz GSE [nT] |
6.9 ± 1.5 |
11.4 ± 2.8 |
Plasma Beta
|
0.127 ± 0.112
|
0.124 ± 0.119
|
Sound Speed [km/s]
|
42.72 ± 4.59
|
71.61 ± 6.10
|
Alfven Speed [km/s]
|
93.78 ± 5.56
|
159.17 ± 12.34
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.823 ± 0.562 |
0.258 ± 1.085 |
-0.506 ± 0.458 |
-30.39 ± 53.38 |
162.57 ± 74.89 |
| VC |
-0.840 ± 0.049 |
-0.143 ± 0.058 |
-0.523 ± 0.469 |
-31.56 ± 5.34 |
189.68 ± 3.90 |
| MX1 |
-0.876 ± 0.055 |
-0.047 ± 0.080 |
-0.479 ± 0.439 |
-28.63 ± 6.55 |
183.10 ± 5.20 |
| MX2 |
-0.872 ± 0.053 |
-0.046 ± 0.079 |
-0.488 ± 0.445 |
-29.21 ± 6.26 |
183.02 ± 5.18 |
| MX3 |
-0.868 ± 0.052 |
-0.045 ± 0.079 |
-0.495 ± 0.450 |
-29.64 ± 6.05 |
182.94 ± 5.20 |
| RH08 |
-0.953 ± 0.003 |
0.058 ± 0.019 |
-0.296 ± 0.287 |
-17.22 ± 0.52 |
176.49 ± 1.13 |
| RH09 |
-0.963 ± 0.019 |
0.144 ± 0.070 |
-0.229 ± 0.225 |
-13.24 ± 3.97 |
171.48 ± 4.17 |
| RH10 |
-0.964 ± 0.019 |
0.179 ± 0.070 |
-0.196 ± 0.193 |
-11.28 ± 3.96 |
169.47 ± 4.16 |
| Average |
-0.895 |
0.045 |
-0.401 |
-23.898 |
177.344 |
| Median |
-0.872 |
0.058 |
-0.479 |
-28.631 |
182.942 |
| Deviation |
0.057 |
0.138 |
0.137 |
8.469 |
8.980 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
82.2 ± 2.1 |
729.4 ± 141.4 |
2.06 ± 0.21 |
| VC |
77.5 ± 2.2 |
760.6 ± 153.2 |
2.06 ± 0.21 |
| MX1 |
83.9 ± 2.2 |
773.0 ± 150.8 |
2.06 ± 0.21 |
| MX2 |
83.7 ± 2.2 |
771.6 ± 151.1 |
2.06 ± 0.21 |
| MX3 |
83.5 ± 2.2 |
770.6 ± 151.4 |
2.06 ± 0.21 |
| RH08 |
85.2 ± 2.4 |
780.2 ± 138.8 |
2.06 ± 0.21 |
| RH09 |
79.0 ± 2.4 |
767.3 ± 131.3 |
2.06 ± 0.21 |
| RH10 |
76.3 ± 2.5 |
758.7 ± 127.5 |
2.06 ± 0.21 |
| Average |
81.4 |
763.9 |
2.06 |
| Median |
83.5 |
770.6 |
2.06 |
| Deviation |
3.3 |
15.6 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
362.1 ± 6.0 |
5.3 ± 0.5 |
12.7 ± 0.8 |
103.0 ± 5.6 |
69.13 ± 5.47 |
3.52 ± 0.15 |
| VC |
380.8 ± 6.6 |
8.4 ± 0.8 |
20.3 ± 1.2 |
102.8 ± 5.6 |
45.59 ± 3.77 |
3.71 ± 0.16 |
| MX1 |
380.7 ± 6.9 |
4.1 ± 0.4 |
10.0 ± 0.6 |
103.1 ± 5.6 |
92.93 ± 7.67 |
3.70 ± 0.16 |
| MX2 |
381.0 ± 6.8 |
4.3 ± 0.4 |
10.3 ± 0.6 |
103.0 ± 5.6 |
89.91 ± 7.40 |
3.71 ± 0.16 |
| MX3 |
381.2 ± 6.8 |
4.4 ± 0.4 |
10.5 ± 0.6 |
103.0 ± 5.6 |
87.91 ± 7.23 |
3.71 ± 0.16 |
| RH8 |
364.4 ± 8.2 |
3.3 ± 0.3 |
7.9 ± 0.5 |
103.1 ± 5.6 |
112.48 ± 9.60 |
3.54 ± 0.16 |
| RH9 |
351.4 ± 8.4 |
7.4 ± 0.7 |
17.9 ± 1.1 |
102.9 ± 5.6 |
47.65 ± 4.11 |
3.42 ± 0.15 |
| RH10 |
343.9 ± 8.5 |
9.2 ± 0.8 |
22.2 ± 1.3 |
102.7 ± 5.6 |
37.53 ± 3.26 |
3.35 ± 0.15 |
| Average |
368.2 |
5.8 |
14.0 |
103.0 |
72.9 |
3.6 |
| Median |
380.7 |
5.3 |
12.7 |
103.0 |
87.9 |
3.7 |
| Deviation |
15.0 |
2.2 |
5.4 |
0.1 |
27.1 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
203.4 ± 8.0 |
8.9 ± 0.6 |
21.6 ± 1.7 |
174.5 ± 11.3 |
23.07 ± 1.98 |
1.17 ± 0.09 |
| VC |
208.1 ± 5.5 |
14.1 ± 1.0 |
34.4 ± 2.7 |
174.1 ± 11.3 |
14.80 ± 1.07 |
1.20 ± 0.08 |
| MX1 |
209.2 ± 5.8 |
6.9 ± 0.5 |
16.9 ± 1.3 |
174.5 ± 11.3 |
30.31 ± 2.26 |
1.20 ± 0.08 |
| MX2 |
209.4 ± 5.9 |
7.2 ± 0.5 |
17.5 ± 1.4 |
174.5 ± 11.3 |
29.34 ± 2.19 |
1.20 ± 0.08 |
| MX3 |
209.5 ± 5.9 |
7.3 ± 0.5 |
17.9 ± 1.4 |
174.5 ± 11.3 |
28.69 ± 2.15 |
1.20 ± 0.08 |
| RH8 |
200.8 ± 6.3 |
5.5 ± 0.4 |
13.4 ± 1.0 |
174.6 ± 11.3 |
36.81 ± 2.89 |
1.15 ± 0.07 |
| RH9 |
194.7 ± 6.9 |
12.5 ± 0.9 |
30.4 ± 2.4 |
174.2 ± 11.3 |
15.68 ± 1.30 |
1.12 ± 0.06 |
| RH10 |
190.8 ± 7.2 |
15.5 ± 1.1 |
37.7 ± 2.9 |
174.0 ± 11.3 |
12.37 ± 1.05 |
1.10 ± 0.06 |
| Average |
203.2 |
9.7 |
23.7 |
174.4 |
23.9 |
1.2 |
| Median |
208.1 |
8.9 |
21.6 |
174.5 |
28.7 |
1.2 |
| Deviation |
7.3 |
3.8 |
9.1 |
0.2 |
8.8 |
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 Mon Apr 13 08:55:21 2009
Michael L Stevens
(mstevens@cfa.harvard.edu)
| 
