Database: Ace Shock Analysis
Event ID: 20042122031
Observation time: 07/30/2004 212.85550 2031 [UT]
|
|
General
Information (About, Top)
| Year |
2004 |
| Fractional day of year |
212.855496 |
| Arrival time of shock [seconds of day] |
73914.9 ± 10.0 |
| Shock type |
FF |
| Electron data availability |
0 |
| X GSE location of spacecraft [Re] |
229.509 |
| Y GSE location of spacecraft [Re] |
-36.443 |
| Z GSE location of spacecraft [Re] |
20.690 |
| Upstream plasma points selected for analysis |
0005 |
| Upstream field points selected for analysis |
0368 |
| Downstream plasma points selected for analysis |
0003
|
| Downstream field points selected for analysis |
0201 |
| Minimum chisq/dof for RH8,RH9,RH10 |
11.48, 20.75, 24.92 |
Event added to database
|
Wed Oct 15 10:43:00 2014
|
Event last processed
|
Wed Oct 15 11:34:46 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
42.152 ± 0.371
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-433.5 ± 2.2 |
-512.9 ± 7.4 |
| Vy GSE [km/s] |
15.7 ± 5.9 |
50.0 ± 4.7 |
| Vz GSE [km/s] |
3.0 ± 6.9 |
-35.8 ± 5.8 |
| Wi [km/s] |
41.8 ± 3.8 |
57.4 ± 2.9 |
| We [km/s] |
1321.5 ± 119.8 |
1815.9 ± 92.1 |
| Ni [n/cc] |
2.6 ± 0.2 |
5.7 ± 0.3 |
| Bx GSE [nT] |
4.4 ± 0.2 |
4.5 ± 0.4 |
| By GSE [nT] |
1.1 ± 0.1 |
5.4 ± 0.9 |
| Bz GSE [nT] |
-0.8 ± 0.1 |
-5.1 ± 0.5 |
Plasma Beta
|
0.447 ± 0.427
|
0.526 ± 0.487
|
Sound Speed [km/s]
|
53.95 ± 4.89
|
74.13 ± 3.76
|
Alfven Speed [km/s]
|
63.01 ± 3.68
|
79.98 ± 5.38
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.999 ± 0.003 |
-0.035 ± 0.072 |
-0.039 ± 0.039 |
-2.26 ± 3.11 |
182.01 ± 4.13 |
| VC |
-0.838 ± 0.042 |
0.360 ± 0.054 |
-0.411 ± 0.386 |
-24.24 ± 5.43 |
156.77 ± 3.54 |
| MX1 |
-0.999 ± 0.003 |
-0.030 ± 0.048 |
-0.042 ± 0.042 |
-2.43 ± 3.89 |
181.73 ± 2.73 |
| MX2 |
-0.999 ± 0.004 |
-0.016 ± 0.064 |
-0.040 ± 0.040 |
-2.27 ± 6.27 |
180.92 ± 3.67 |
| MX3 |
-0.999 ± 0.005 |
-0.007 ± 0.099 |
-0.038 ± 0.038 |
-2.17 ± 8.06 |
180.38 ± 5.65 |
| RH08 |
-0.998 ± 0.002 |
-0.061 ± 0.027 |
-0.017 ± 0.017 |
-0.96 ± 1.44 |
183.51 ± 1.52 |
| RH09 |
-0.991 ± 0.008 |
-0.131 ± 0.064 |
-0.006 ± 0.006 |
-0.32 ± 3.86 |
187.52 ± 3.68 |
| RH10 |
-0.991 ± 0.009 |
-0.131 ± 0.066 |
-0.006 ± 0.006 |
-0.32 ± 3.98 |
187.52 ± 3.83 |
| Average |
-0.977 |
-0.006 |
-0.075 |
-4.371 |
180.044 |
| Median |
-0.998 |
-0.030 |
-0.038 |
-2.173 |
182.005 |
| Deviation |
0.056 |
0.156 |
0.137 |
8.076 |
9.807 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
17.6 ± 2.5 |
573.7 ± 3.1 |
2.24 ± 0.11 |
| VC |
50.3 ± 2.5 |
538.9 ± 3.0 |
2.24 ± 0.11 |
| MX1 |
17.9 ± 2.5 |
574.2 ± 3.1 |
2.24 ± 0.11 |
| MX2 |
18.3 ± 2.5 |
575.4 ± 3.1 |
2.24 ± 0.11 |
| MX3 |
18.7 ± 2.5 |
576.1 ± 3.1 |
2.24 ± 0.11 |
| RH08 |
15.6 ± 2.5 |
570.1 ± 3.0 |
2.24 ± 0.11 |
| RH09 |
12.5 ± 2.4 |
560.8 ± 2.9 |
2.24 ± 0.11 |
| RH10 |
12.5 ± 2.4 |
560.8 ± 10.9 |
2.24 ± 0.11 |
| Average |
20.4 |
566.3 |
2.24 |
| Median |
17.9 |
573.7 |
2.24 |
| Deviation |
12.3 |
12.7 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
141.5 ± 2.4 |
47.5 ± 2.9 |
60.1 ± 3.5 |
68.1 ± 3.3 |
2.99 ± 0.16 |
2.08 ± 0.07 |
| VC |
171.2 ± 4.5 |
27.6 ± 1.5 |
40.2 ± 2.3 |
78.3 ± 3.9 |
6.20 ± 0.19 |
2.19 ± 0.06 |
| MX1 |
141.9 ± 2.4 |
47.3 ± 2.9 |
60.0 ± 3.5 |
68.2 ± 3.3 |
3.01 ± 0.16 |
2.08 ± 0.07 |
| MX2 |
142.7 ± 2.4 |
47.1 ± 2.9 |
59.8 ± 3.5 |
68.4 ± 3.3 |
3.04 ± 0.16 |
2.09 ± 0.07 |
| MX3 |
143.1 ± 2.4 |
46.9 ± 2.9 |
59.7 ± 3.5 |
68.5 ± 3.3 |
3.06 ± 0.16 |
2.09 ± 0.07 |
| RH8 |
138.5 ± 2.4 |
48.5 ± 3.0 |
60.7 ± 3.5 |
67.4 ± 3.2 |
2.87 ± 0.16 |
2.06 ± 0.07 |
| RH9 |
133.1 ± 2.5 |
49.9 ± 3.2 |
61.5 ± 3.6 |
66.4 ± 3.2 |
2.68 ± 0.17 |
2.01 ± 0.07 |
| RH10 |
133.1 ± 2.5 |
49.9 ± 3.2 |
61.5 ± 3.6 |
66.4 ± 3.2 |
2.68 ± 0.17 |
2.01 ± 0.07 |
| Average |
143.2 |
45.6 |
57.9 |
69.0 |
3.3 |
2.1 |
| Median |
141.9 |
47.5 |
60.1 |
68.2 |
3.0 |
2.1 |
| Deviation |
12.0 |
7.3 |
7.2 |
3.9 |
1.2 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
61.9 ± 7.0 |
63.6 ± 0.5 |
76.3 ± 5.1 |
88.8 ± 2.2 |
0.97 ± 0.12 |
0.70 ± 0.08 |
| VC |
76.5 ± 5.7 |
36.7 ± 0.4 |
51.0 ± 3.4 |
102.8 ± 2.0 |
2.08 ± 0.16 |
0.74 ± 0.05 |
| MX1 |
62.1 ± 7.0 |
63.3 ± 0.5 |
76.1 ± 5.1 |
88.9 ± 2.2 |
0.98 ± 0.12 |
0.70 ± 0.08 |
| MX2 |
62.4 ± 7.1 |
63.0 ± 0.5 |
75.9 ± 5.1 |
89.2 ± 2.2 |
0.99 ± 0.12 |
0.70 ± 0.08 |
| MX3 |
62.6 ± 7.1 |
62.7 ± 0.5 |
75.8 ± 5.1 |
89.3 ± 2.2 |
1.00 ± 0.12 |
0.70 ± 0.08 |
| RH8 |
60.7 ± 7.0 |
65.0 ± 0.5 |
77.0 ± 5.2 |
87.7 ± 2.3 |
0.94 ± 0.11 |
0.69 ± 0.08 |
| RH9 |
58.7 ± 6.7 |
67.0 ± 0.5 |
78.1 ± 5.2 |
86.2 ± 2.4 |
0.88 ± 0.11 |
0.68 ± 0.08 |
| RH10 |
58.7 ± 6.7 |
67.0 ± 0.5 |
78.1 ± 5.2 |
86.2 ± 2.4 |
0.88 ± 0.11 |
0.68 ± 0.08 |
| Average |
62.9 |
61.0 |
73.5 |
89.9 |
1.1 |
0.7 |
| Median |
62.1 |
63.6 |
76.3 |
88.9 |
1.0 |
0.7 |
| Deviation |
5.7 |
10.0 |
9.1 |
5.4 |
0.4 |
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)
| 
