Database: Ace Shock Analysis
Event ID: 20040220104
Observation time: 01/22/2004 22.04482 0104 [UT]
|
|
General
Information (About, Top)
| Year |
2004 |
| Fractional day of year |
22.044819 |
| Arrival time of shock [seconds of day] |
3872.4 ± 40.0 |
| Shock type |
FF |
| Electron data availability |
0 |
| X GSE location of spacecraft [Re] |
229.428 |
| Y GSE location of spacecraft [Re] |
-40.324 |
| Z GSE location of spacecraft [Re] |
22.114 |
| Upstream plasma points selected for analysis |
0004 |
| Upstream field points selected for analysis |
0295 |
| Downstream plasma points selected for analysis |
0004
|
| Downstream field points selected for analysis |
0269 |
| Minimum chisq/dof for RH8,RH9,RH10 |
5.48, 16.56, 19.49 |
Event added to database
|
Wed Oct 15 10:15:27 2014
|
Event last processed
|
Wed Oct 15 11:14:08 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
32.686 ± 0.960
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-474.0 ± 5.0 |
-647.2 ± 13.5 |
| Vy GSE [km/s] |
-36.0 ± 2.1 |
-34.1 ± 19.0 |
| Vz GSE [km/s] |
16.8 ± 2.8 |
63.2 ± 22.3 |
| Wi [km/s] |
30.9 ± 0.8 |
71.7 ± 5.1 |
| We [km/s] |
977.7 ± 25.1 |
2268.3 ± 160.2 |
| Ni [n/cc] |
6.1 ± 0.4 |
17.7 ± 2.5 |
| Bx GSE [nT] |
1.7 ± 1.3 |
2.0 ± 1.2 |
| By GSE [nT] |
-6.5 ± 0.8 |
-22.4 ± 3.2 |
| Bz GSE [nT] |
1.1 ± 0.9 |
8.8 ± 7.4 |
Plasma Beta
|
0.251 ± 0.259
|
0.304 ± 0.315
|
Sound Speed [km/s]
|
39.91 ± 1.03
|
92.60 ± 6.54
|
Alfven Speed [km/s]
|
61.75 ± 2.74
|
131.37 ± 9.28
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.981 ± 0.152 |
0.174 ± 0.772 |
0.091 ± 0.090 |
5.20 ± 42.21 |
169.92 ± 45.10 |
| VC |
-0.968 ± 0.025 |
0.007 ± 0.097 |
0.251 ± 0.246 |
14.54 ± 5.75 |
179.57 ± 5.76 |
| MX1 |
-0.965 ± 0.028 |
0.145 ± 0.143 |
0.220 ± 0.216 |
12.71 ± 4.84 |
171.46 ± 8.46 |
| MX2 |
-0.972 ± 0.020 |
0.119 ± 0.112 |
0.200 ± 0.198 |
11.56 ± 4.12 |
173.04 ± 6.62 |
| MX3 |
-0.974 ± 0.018 |
0.112 ± 0.106 |
0.195 ± 0.193 |
11.27 ± 3.99 |
173.43 ± 6.22 |
| RH08 |
-0.991 ± 0.005 |
0.061 ± 0.039 |
0.117 ± 0.117 |
6.74 ± 2.07 |
176.49 ± 2.28 |
| RH09 |
-0.996 ± 0.006 |
0.061 ± 0.069 |
-0.061 ± 0.061 |
-3.52 ± 4.03 |
176.49 ± 3.95 |
| RH10 |
-0.996 ± 0.006 |
0.044 ± 0.069 |
-0.073 ± 0.072 |
-4.16 ± 4.03 |
177.49 ± 3.95 |
| Average |
-0.980 |
0.090 |
0.118 |
6.792 |
174.737 |
| Median |
-0.974 |
0.112 |
0.195 |
11.273 |
176.490 |
| Deviation |
0.013 |
0.056 |
0.125 |
7.239 |
3.287 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
65.8 ± 13.3 |
724.1 ± 9.3 |
2.90 ± 0.50 |
| VC |
77.0 ± 14.0 |
735.3 ± 9.7 |
2.90 ± 0.50 |
| MX1 |
69.0 ± 13.9 |
727.6 ± 9.8 |
2.90 ± 0.50 |
| MX2 |
70.2 ± 13.8 |
730.8 ± 9.7 |
2.90 ± 0.50 |
| MX3 |
70.5 ± 13.8 |
731.5 ± 9.6 |
2.90 ± 0.50 |
| RH08 |
72.5 ± 13.4 |
737.2 ± 9.2 |
2.90 ± 0.50 |
| RH09 |
70.9 ± 12.2 |
725.1 ± 8.4 |
2.90 ± 0.50 |
| RH10 |
71.8 ± 12.1 |
725.1 ± 32.3 |
2.90 ± 0.50 |
| Average |
71.0 |
729.6 |
2.90 |
| Median |
70.9 |
730.8 |
2.90 |
| Deviation |
3.2 |
4.9 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
264.1 ± 4.3 |
14.0 ± 0.4 |
25.3 ± 1.1 |
72.2 ± 2.8 |
18.91 ± 0.86 |
3.66 ± 0.20 |
| VC |
272.5 ± 4.2 |
7.6 ± 0.2 |
13.9 ± 0.6 |
73.1 ± 2.8 |
36.08 ± 1.62 |
3.73 ± 0.20 |
| MX1 |
271.9 ± 4.0 |
12.2 ± 0.4 |
22.2 ± 1.0 |
72.5 ± 2.8 |
22.31 ± 0.98 |
3.76 ± 0.20 |
| MX2 |
270.7 ± 4.1 |
11.5 ± 0.3 |
20.9 ± 0.9 |
72.6 ± 2.8 |
23.55 ± 1.05 |
3.73 ± 0.20 |
| MX3 |
270.4 ± 4.2 |
11.3 ± 0.3 |
20.6 ± 0.9 |
72.7 ± 2.8 |
23.90 ± 1.07 |
3.73 ± 0.20 |
| RH8 |
267.6 ± 4.5 |
10.2 ± 0.3 |
18.6 ± 0.8 |
72.8 ± 2.8 |
26.33 ± 1.22 |
3.68 ± 0.20 |
| RH9 |
256.1 ± 5.0 |
11.1 ± 0.3 |
20.2 ± 0.9 |
72.7 ± 2.8 |
23.10 ± 1.12 |
3.53 ± 0.20 |
| RH10 |
255.6 ± 5.0 |
10.6 ± 0.3 |
19.3 ± 0.9 |
72.8 ± 2.8 |
24.18 ± 1.18 |
3.52 ± 0.20 |
| Average |
266.1 |
11.1 |
20.1 |
72.7 |
24.8 |
3.7 |
| Median |
270.4 |
11.3 |
20.6 |
72.7 |
23.9 |
3.7 |
| Deviation |
6.9 |
1.8 |
3.3 |
0.3 |
5.0 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
89.7 ± 17.0 |
31.5 ± 1.3 |
53.8 ± 3.8 |
157.8 ± 7.0 |
2.84 ± 0.50 |
0.57 ± 0.11 |
| VC |
93.2 ± 17.8 |
17.0 ± 0.7 |
29.5 ± 2.1 |
160.0 ± 7.0 |
5.47 ± 0.97 |
0.58 ± 0.11 |
| MX1 |
94.3 ± 19.0 |
27.5 ± 1.1 |
47.2 ± 3.3 |
158.5 ± 7.0 |
3.43 ± 0.63 |
0.60 ± 0.12 |
| MX2 |
92.8 ± 18.3 |
25.9 ± 1.1 |
44.5 ± 3.1 |
158.8 ± 7.0 |
3.58 ± 0.65 |
0.58 ± 0.12 |
| MX3 |
92.4 ± 18.2 |
25.5 ± 1.1 |
43.9 ± 3.1 |
158.9 ± 7.0 |
3.62 ± 0.66 |
0.58 ± 0.11 |
| RH8 |
90.4 ± 16.2 |
22.9 ± 0.9 |
39.5 ± 2.8 |
159.3 ± 7.0 |
3.94 ± 0.66 |
0.57 ± 0.10 |
| RH9 |
86.3 ± 13.0 |
25.0 ± 1.0 |
43.0 ± 3.0 |
159.0 ± 7.0 |
3.45 ± 0.51 |
0.54 ± 0.09 |
| RH10 |
86.3 ± 12.7 |
23.8 ± 1.0 |
41.0 ± 2.9 |
159.1 ± 7.0 |
3.62 ± 0.52 |
0.54 ± 0.09 |
| Average |
90.7 |
24.9 |
42.8 |
158.9 |
3.7 |
0.6 |
| Median |
92.4 |
25.5 |
43.9 |
159.0 |
3.6 |
0.6 |
| Deviation |
3.1 |
4.1 |
6.9 |
0.6 |
0.8 |
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)
| 
