Database: Ace Shock Analysis
Event ID: 20021310925
Observation time: 05/11/2002 131.39240 0925 [UT]
|
|
General
Information (About, Top)
| Year |
2002 |
| Fractional day of year |
131.392396 |
| Arrival time of shock [seconds of day] |
33903.0 ± 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] |
-0.003 |
| Upstream plasma points selected for analysis |
0011 |
| Upstream field points selected for analysis |
0044 |
| Downstream plasma points selected for analysis |
0009
|
| Downstream field points selected for analysis |
0039 |
| Minimum chisq/dof for RH8,RH9,RH10 |
7.32, 8.76, 9.10 |
Event added to database
|
Sun May 1 22:15:22 2005
|
Event last processed
|
Tue May 3 14:22:51 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.008 ± 0.001
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-355.9 ± 4.4 |
-446.0 ± 6.5 |
| Vy GSE [km/s] |
-16.0 ± 7.7 |
-49.2 ± 4.7 |
| Vz GSE [km/s] |
-43.3 ± 4.3 |
-57.6 ± 4.3 |
| Wi [km/s] |
26.0 ± 1.8 |
41.6 ± 4.2 |
| We [km/s] |
823.1 ± 55.5 |
1316.5 ± 131.3 |
| Ni [n/cc] |
10.0 ± 0.7 |
25.1 ± 2.0 |
| Bx GSE [nT] |
6.1 ± 0.7 |
1.3 ± 1.3 |
| By GSE [nT] |
-1.1 ± 1.0 |
-10.5 ± 1.1 |
| Bz GSE [nT] |
-5.7 ± 0.6 |
-16.1 ± 0.9 |
Plasma Beta
|
0.198 ± 0.195
|
0.246 ± 0.243
|
Sound Speed [km/s]
|
33.60 ± 2.27
|
53.75 ± 5.36
|
Alfven Speed [km/s]
|
58.83 ± 2.04
|
84.35 ± 2.40
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.876 ± 0.032 |
-0.079 ± 0.058 |
0.475 ± 0.436 |
28.39 ± 3.78 |
185.12 ± 3.81 |
| VC |
-0.929 ± 0.030 |
-0.341 ± 0.079 |
-0.145 ± 0.144 |
-8.36 ± 3.21 |
200.15 ± 4.84 |
| MX1 |
-0.893 ± 0.033 |
-0.042 ± 0.058 |
0.447 ± 0.415 |
26.56 ± 4.27 |
182.67 ± 3.72 |
| MX2 |
-0.919 ± 0.021 |
0.026 ± 0.073 |
0.394 ± 0.372 |
23.18 ± 3.10 |
178.37 ± 4.52 |
| MX3 |
-0.930 ± 0.021 |
0.062 ± 0.088 |
0.362 ± 0.346 |
21.25 ± 3.26 |
176.16 ± 5.44 |
| RH08 |
-0.930 ± 0.005 |
0.139 ± 0.014 |
0.341 ± 0.327 |
19.92 ± 0.78 |
171.48 ± 0.84 |
| RH09 |
-0.930 ± 0.021 |
0.139 ± 0.059 |
0.341 ± 0.327 |
19.92 ± 3.26 |
171.48 ± 3.66 |
| RH10 |
-0.930 ± 0.022 |
0.139 ± 0.061 |
0.341 ± 0.327 |
19.92 ± 3.31 |
171.48 ± 3.73 |
| Average |
-0.917 |
0.006 |
0.319 |
18.848 |
179.612 |
| Median |
-0.929 |
0.062 |
0.362 |
21.246 |
178.374 |
| Deviation |
0.021 |
0.163 |
0.195 |
11.456 |
9.810 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
19.0 ± 8.4 |
416.7 ± 9.5 |
2.54 ± 0.24 |
| VC |
57.8 ± 8.7 |
505.0 ± 13.1 |
2.54 ± 0.24 |
| MX1 |
19.6 ± 7.8 |
425.1 ± 9.5 |
2.54 ± 0.24 |
| MX2 |
21.4 ± 6.7 |
436.6 ± 9.5 |
2.54 ± 0.24 |
| MX3 |
22.8 ± 6.2 |
441.7 ± 9.5 |
2.54 ± 0.24 |
| RH08 |
23.8 ± 5.1 |
437.3 ± 9.4 |
2.54 ± 0.24 |
| RH09 |
23.8 ± 5.1 |
437.3 ± 9.4 |
2.54 ± 0.24 |
| RH10 |
23.8 ± 5.1 |
437.3 ± 9.4 |
2.54 ± 0.24 |
| Average |
26.5 |
442.1 |
2.54 |
| Median |
23.8 |
437.3 |
2.54 |
| Deviation |
12.8 |
26.7 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
124.2 ± 2.7 |
31.0 ± 1.9 |
55.6 ± 1.9 |
60.3 ± 1.9 |
4.01 ± 0.20 |
2.06 ± 0.08 |
| VC |
162.7 ± 6.7 |
16.0 ± 0.8 |
31.3 ± 1.1 |
65.9 ± 1.6 |
10.20 ± 0.30 |
2.47 ± 0.12 |
| MX1 |
125.7 ± 2.6 |
30.9 ± 1.9 |
55.4 ± 1.9 |
60.3 ± 1.9 |
4.08 ± 0.20 |
2.09 ± 0.08 |
| MX2 |
126.9 ± 2.6 |
30.4 ± 1.8 |
54.8 ± 1.9 |
60.6 ± 1.8 |
4.19 ± 0.21 |
2.10 ± 0.07 |
| MX3 |
127.4 ± 2.7 |
30.0 ± 1.8 |
54.2 ± 1.9 |
60.8 ± 1.8 |
4.26 ± 0.21 |
2.10 ± 0.07 |
| RH8 |
123.4 ± 2.5 |
29.7 ± 1.8 |
53.8 ± 1.9 |
60.9 ± 1.8 |
4.17 ± 0.22 |
2.03 ± 0.06 |
| RH9 |
123.4 ± 2.5 |
29.7 ± 1.8 |
53.8 ± 1.9 |
60.9 ± 1.8 |
4.17 ± 0.22 |
2.03 ± 0.06 |
| RH10 |
123.4 ± 2.5 |
29.7 ± 1.8 |
53.8 ± 1.9 |
60.9 ± 1.8 |
4.17 ± 0.22 |
2.03 ± 0.06 |
| Average |
129.6 |
28.4 |
51.6 |
61.3 |
4.9 |
2.1 |
| Median |
125.7 |
30.0 |
54.2 |
60.9 |
4.2 |
2.1 |
| Deviation |
13.5 |
5.1 |
8.2 |
1.9 |
2.1 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
49.5 ± 6.3 |
49.2 ± 4.5 |
79.8 ± 2.3 |
87.2 ± 2.5 |
1.01 ± 0.09 |
0.57 ± 0.06 |
| VC |
65.7 ± 5.4 |
24.9 ± 1.9 |
44.9 ± 1.3 |
97.0 ± 3.5 |
2.65 ± 0.24 |
0.68 ± 0.05 |
| MX1 |
50.3 ± 6.4 |
48.9 ± 4.4 |
79.5 ± 2.3 |
87.3 ± 2.5 |
1.03 ± 0.09 |
0.58 ± 0.06 |
| MX2 |
50.7 ± 6.6 |
48.0 ± 4.3 |
78.5 ± 2.2 |
87.8 ± 2.6 |
1.05 ± 0.10 |
0.58 ± 0.06 |
| MX3 |
50.9 ± 6.6 |
47.4 ± 4.2 |
77.7 ± 2.2 |
88.2 ± 2.6 |
1.07 ± 0.10 |
0.58 ± 0.07 |
| RH8 |
49.1 ± 6.8 |
46.9 ± 4.1 |
77.2 ± 2.2 |
88.4 ± 2.6 |
1.05 ± 0.10 |
0.55 ± 0.07 |
| RH9 |
49.1 ± 6.8 |
46.9 ± 4.1 |
77.2 ± 2.2 |
88.4 ± 2.6 |
1.05 ± 0.10 |
0.55 ± 0.07 |
| RH10 |
49.1 ± 6.8 |
46.9 ± 4.1 |
77.2 ± 2.2 |
88.4 ± 2.6 |
1.05 ± 0.10 |
0.55 ± 0.07 |
| Average |
51.8 |
44.9 |
74.0 |
89.1 |
1.2 |
0.6 |
| Median |
50.3 |
47.4 |
77.7 |
88.4 |
1.0 |
0.6 |
| Deviation |
5.7 |
8.1 |
11.8 |
3.2 |
0.6 |
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)
| 
