Database: Ace Shock Analysis
Event ID: 20022101240
Observation time: 07/29/2002 210.52802 1240 [UT]
|
|
General
Information (About, Top)
| Year |
2002 |
| Fractional day of year |
210.528021 |
| Arrival time of shock [seconds of day] |
45621.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.038 |
| Y GSE location of spacecraft [Re] |
-0.005 |
| Z GSE location of spacecraft [Re] |
0.004 |
| Upstream plasma points selected for analysis |
0010 |
| Upstream field points selected for analysis |
0042 |
| Downstream plasma points selected for analysis |
0009
|
| Downstream field points selected for analysis |
0036 |
| Minimum chisq/dof for RH8,RH9,RH10 |
9.53, 19.86, 22.24 |
Event added to database
|
Sun May 1 22:33:14 2005
|
Event last processed
|
Tue May 3 14:31:42 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.006 ± 0.001
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-390.6 ± 3.1 |
-462.3 ± 6.9 |
| Vy GSE [km/s] |
-33.6 ± 2.4 |
-60.9 ± 5.4 |
| Vz GSE [km/s] |
29.4 ± 6.7 |
80.6 ± 7.1 |
| Wi [km/s] |
23.4 ± 1.9 |
31.3 ± 3.9 |
| We [km/s] |
740.1 ± 58.9 |
990.0 ± 122.3 |
| Ni [n/cc] |
6.3 ± 0.7 |
12.7 ± 1.8 |
| Bx GSE [nT] |
2.9 ± 0.6 |
5.5 ± 0.8 |
| By GSE [nT] |
-3.3 ± 0.3 |
-11.2 ± 0.9 |
| Bz GSE [nT] |
-0.8 ± 1.3 |
1.5 ± 1.9 |
Plasma Beta
|
0.336 ± 0.356
|
0.166 ± 0.147
|
Sound Speed [km/s]
|
30.21 ± 2.40
|
40.42 ± 4.99
|
Alfven Speed [km/s]
|
40.75 ± 2.54
|
78.30 ± 5.40
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.869 ± 0.224 |
0.077 ± 0.367 |
0.489 ± 0.446 |
29.26 ± 26.12 |
174.96 ± 24.14 |
| VC |
-0.779 ± 0.058 |
-0.297 ± 0.062 |
0.553 ± 0.488 |
33.56 ± 5.99 |
200.85 ± 4.31 |
| MX1 |
-0.834 ± 0.079 |
-0.069 ± 0.220 |
0.548 ± 0.485 |
33.23 ± 8.09 |
184.76 ± 15.12 |
| MX2 |
-0.849 ± 0.053 |
-0.128 ± 0.109 |
0.513 ± 0.463 |
30.88 ± 5.67 |
188.55 ± 7.32 |
| MX3 |
-0.853 ± 0.053 |
-0.138 ± 0.101 |
0.504 ± 0.456 |
30.25 ± 5.80 |
189.20 ± 6.79 |
| RH08 |
-0.934 ± 0.004 |
-0.140 ± 0.018 |
0.330 ± 0.317 |
19.25 ± 0.55 |
188.52 ± 1.08 |
| RH09 |
-0.829 ± 0.039 |
-0.295 ± 0.065 |
-0.475 ± 0.435 |
-28.35 ± 4.00 |
199.55 ± 4.46 |
| RH10 |
-0.866 ± 0.035 |
-0.274 ± 0.067 |
-0.419 ± 0.393 |
-24.77 ± 3.98 |
197.55 ± 4.37 |
| Average |
-0.851 |
-0.158 |
0.255 |
15.413 |
190.495 |
| Median |
-0.849 |
-0.138 |
0.504 |
30.251 |
189.205 |
| Deviation |
0.044 |
0.129 |
0.439 |
26.302 |
8.640 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
46.7 ± 7.4 |
525.3 ± 27.4 |
2.03 ± 0.49 |
| VC |
67.9 ± 7.8 |
517.7 ± 28.7 |
2.03 ± 0.49 |
| MX1 |
55.2 ± 7.8 |
527.1 ± 28.5 |
2.03 ± 0.49 |
| MX2 |
57.8 ± 7.3 |
535.3 ± 28.5 |
2.03 ± 0.49 |
| MX3 |
58.3 ± 7.2 |
537.0 ± 28.5 |
2.03 ± 0.49 |
| RH08 |
57.1 ± 5.8 |
557.3 ± 27.2 |
2.03 ± 0.49 |
| RH09 |
76.7 ± 11.6 |
408.6 ± 18.6 |
2.03 ± 0.49 |
| RH10 |
73.9 ± 11.1 |
433.4 ± 19.1 |
2.03 ± 0.49 |
| Average |
61.7 |
505.2 |
2.03 |
| Median |
58.3 |
527.1 |
2.03 |
| Deviation |
10.2 |
53.7 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
174.1 ± 5.0 |
17.7 ± 1.0 |
28.0 ± 1.7 |
47.6 ± 2.2 |
9.86 ± 0.51 |
3.66 ± 0.18 |
| VC |
187.3 ± 4.8 |
9.3 ± 0.5 |
15.3 ± 1.0 |
49.9 ± 2.3 |
20.28 ± 0.94 |
3.76 ± 0.17 |
| MX1 |
183.1 ± 5.1 |
14.4 ± 0.8 |
23.3 ± 1.5 |
48.7 ± 2.3 |
12.74 ± 0.63 |
3.77 ± 0.18 |
| MX2 |
184.4 ± 4.9 |
13.4 ± 0.7 |
21.7 ± 1.4 |
49.0 ± 2.3 |
13.84 ± 0.67 |
3.77 ± 0.18 |
| MX3 |
184.5 ± 4.9 |
13.2 ± 0.7 |
21.4 ± 1.3 |
49.0 ± 2.3 |
14.04 ± 0.67 |
3.77 ± 0.18 |
| RH8 |
178.2 ± 4.1 |
13.7 ± 0.8 |
22.2 ± 1.4 |
48.9 ± 2.3 |
13.08 ± 0.61 |
3.65 ± 0.17 |
| RH9 |
88.7 ± 3.6 |
5.6 ± 0.3 |
9.4 ± 0.6 |
50.5 ± 2.3 |
15.90 ± 0.95 |
1.76 ± 0.10 |
| RH10 |
98.4 ± 3.4 |
6.8 ± 0.4 |
11.3 ± 0.7 |
50.3 ± 2.3 |
14.56 ± 0.80 |
1.96 ± 0.11 |
| Average |
159.9 |
11.7 |
19.1 |
49.2 |
14.3 |
3.3 |
| Median |
183.1 |
13.4 |
21.7 |
49.0 |
14.0 |
3.8 |
| Deviation |
41.2 |
4.1 |
6.4 |
1.0 |
3.0 |
0.9 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
88.9 ± 6.1 |
25.6 ± 2.5 |
53.7 ± 3.7 |
84.5 ± 4.5 |
3.49 ± 0.28 |
1.05 ± 0.08 |
| VC |
95.2 ± 5.2 |
13.6 ± 1.3 |
29.5 ± 2.0 |
87.2 ± 4.3 |
7.04 ± 0.58 |
1.09 ± 0.06 |
| MX1 |
93.4 ± 5.8 |
21.0 ± 2.0 |
44.7 ± 3.1 |
85.7 ± 4.4 |
4.47 ± 0.36 |
1.09 ± 0.07 |
| MX2 |
93.9 ± 5.8 |
19.5 ± 1.9 |
41.7 ± 2.9 |
86.1 ± 4.4 |
4.84 ± 0.39 |
1.09 ± 0.07 |
| MX3 |
93.9 ± 5.8 |
19.2 ± 1.8 |
41.2 ± 2.8 |
86.2 ± 4.4 |
4.90 ± 0.39 |
1.09 ± 0.07 |
| RH8 |
90.6 ± 6.2 |
19.9 ± 1.9 |
42.6 ± 2.9 |
86.0 ± 4.4 |
4.57 ± 0.36 |
1.06 ± 0.07 |
| RH9 |
45.5 ± 8.4 |
8.2 ± 0.8 |
18.0 ± 1.2 |
87.9 ± 4.3 |
5.54 ± 0.98 |
0.52 ± 0.09 |
| RH10 |
50.3 ± 8.3 |
10.0 ± 0.9 |
21.7 ± 1.5 |
87.7 ± 4.3 |
5.06 ± 0.79 |
0.57 ± 0.08 |
| Average |
81.5 |
17.1 |
36.6 |
86.4 |
5.0 |
0.9 |
| Median |
93.4 |
19.5 |
41.7 |
86.2 |
4.9 |
1.1 |
| Deviation |
20.8 |
6.0 |
12.3 |
1.2 |
1.0 |
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 Mon Apr 13 08:55:21 2009
Michael L Stevens
(mstevens@cfa.harvard.edu)
| 
