Database: Ace Shock Analysis
Event ID: 20042040954
Observation time: 07/22/2004 204.41278 0954 [UT]
|
|
General
Information (About, Top)
| Year |
2004 |
| Fractional day of year |
204.412778 |
| Arrival time of shock [seconds of day] |
35664.1 ± 10.0 |
| Shock type |
FF |
| Electron data availability |
0 |
| X GSE location of spacecraft [Re] |
234.005 |
| Y GSE location of spacecraft [Re] |
-40.036 |
| Z GSE location of spacecraft [Re] |
22.644 |
| Upstream plasma points selected for analysis |
0003 |
| Upstream field points selected for analysis |
0165 |
| Downstream plasma points selected for analysis |
0002
|
| Downstream field points selected for analysis |
0110 |
| Minimum chisq/dof for RH8,RH9,RH10 |
-851.70, -611.35, -461.99 |
Event added to database
|
Wed Oct 15 10:39:04 2014
|
Event last processed
|
Wed Oct 15 11:30:14 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
94.177 ± 17.303
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-379.8 ± 4.1 |
-474.4 ± 8.5 |
| Vy GSE [km/s] |
14.9 ± 6.9 |
-24.8 ± 7.7 |
| Vz GSE [km/s] |
-0.6 ± 5.2 |
-14.6 ± 10.5 |
| Wi [km/s] |
27.5 ± 2.3 |
54.9 ± 7.1 |
| We [km/s] |
869.9 ± 73.3 |
1736.0 ± 225.7 |
| Ni [n/cc] |
3.5 ± 0.4 |
12.1 ± 1.5 |
| Bx GSE [nT] |
2.1 ± 0.2 |
-1.5 ± 2.1 |
| By GSE [nT] |
4.0 ± 0.1 |
9.0 ± 1.1 |
| Bz GSE [nT] |
-1.3 ± 0.3 |
-3.3 ± 0.4 |
Plasma Beta
|
0.252 ± 0.215
|
0.821 ± 1.032
|
Sound Speed [km/s]
|
35.52 ± 2.99
|
70.87 ± 9.22
|
Alfven Speed [km/s]
|
55.52 ± 3.20
|
61.44 ± 3.46
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.838 ± 0.068 |
-0.535 ± 0.105 |
0.103 ± 0.103 |
5.91 ± 8.48 |
212.55 ± 7.18 |
| VC |
-0.914 ± 0.029 |
-0.382 ± 0.063 |
-0.139 ± 0.139 |
-8.02 ± 5.59 |
202.67 ± 3.96 |
| MX1 |
-0.820 ± 0.061 |
-0.573 ± 0.087 |
-0.013 ± 0.013 |
-0.73 ± 7.55 |
214.93 ± 6.06 |
| MX2 |
-0.813 ± 0.063 |
-0.580 ± 0.088 |
-0.050 ± 0.050 |
-2.89 ± 6.03 |
215.53 ± 6.19 |
| MX3 |
-0.809 ± 0.063 |
-0.584 ± 0.087 |
-0.068 ± 0.068 |
-3.92 ± 5.50 |
215.84 ± 6.16 |
| RH08 |
-0.322 ± 0.067 |
0.784 ± 0.044 |
-0.531 ± 0.474 |
-32.05 ± 4.01 |
112.31 ± 4.78 |
| RH09 |
-0.316 ± 0.028 |
0.771 ± 0.021 |
-0.553 ± 0.488 |
-33.58 ± 2.00 |
112.31 ± 2.00 |
| RH10 |
-0.300 ± 0.028 |
0.769 ± 0.021 |
-0.564 ± 0.495 |
-34.35 ± 2.00 |
111.31 ± 2.00 |
| Average |
-0.641 |
-0.041 |
-0.227 |
-13.704 |
174.682 |
| Median |
-0.809 |
-0.382 |
-0.068 |
-3.918 |
212.552 |
| Deviation |
0.274 |
0.679 |
0.275 |
16.716 |
52.094 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
31.1 ± 1.7 |
452.9 ± 4.7 |
3.42 ± 0.83 |
| VC |
46.2 ± 1.7 |
487.1 ± 3.8 |
3.42 ± 0.83 |
| MX1 |
32.0 ± 1.8 |
446.1 ± 4.4 |
3.42 ± 0.83 |
| MX2 |
32.7 ± 1.9 |
443.2 ± 4.3 |
3.42 ± 0.83 |
| MX3 |
33.1 ± 1.9 |
441.4 ± 4.3 |
3.42 ± 0.83 |
| RH08 |
47.9 ± 1.6 |
151.6 ± 4.5 |
3.42 ± 0.83 |
| RH09 |
48.1 ± 1.6 |
150.0 ± 4.6 |
3.42 ± 0.83 |
| RH10 |
47.4 ± 1.7 |
142.2 ± 10.5 |
3.42 ± 0.83 |
| Average |
39.8 |
339.3 |
3.42 |
| Median |
46.2 |
443.2 |
3.42 |
| Deviation |
8.2 |
159.2 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
142.5 ± 3.3 |
28.3 ± 1.6 |
47.5 ± 2.7 |
59.6 ± 1.9 |
5.05 ± 0.18 |
2.39 ± 0.13 |
| VC |
145.6 ± 3.9 |
21.9 ± 1.0 |
38.4 ± 2.2 |
62.3 ± 1.4 |
6.66 ± 0.17 |
2.34 ± 0.12 |
| MX1 |
143.2 ± 3.9 |
27.9 ± 1.6 |
47.1 ± 2.7 |
59.8 ± 1.9 |
5.14 ± 0.15 |
2.40 ± 0.14 |
| MX2 |
143.1 ± 4.1 |
27.6 ± 1.5 |
46.7 ± 2.7 |
59.9 ± 1.8 |
5.18 ± 0.14 |
2.39 ± 0.14 |
| MX3 |
142.9 ± 4.2 |
27.5 ± 1.5 |
46.5 ± 2.7 |
60.0 ± 1.8 |
5.21 ± 0.13 |
2.39 ± 0.14 |
| RH8 |
17.4 ± 4.1 |
21.1 ± 1.0 |
37.2 ± 2.1 |
62.5 ± 1.4 |
0.83 ± 0.21 |
0.28 ± 0.06 |
| RH9 |
18.0 ± 4.0 |
21.0 ± 1.0 |
37.1 ± 2.1 |
62.6 ± 1.4 |
0.86 ± 0.21 |
0.29 ± 0.06 |
| RH10 |
16.4 ± 3.9 |
21.3 ± 1.0 |
37.5 ± 2.2 |
62.5 ± 1.4 |
0.77 ± 0.20 |
0.26 ± 0.06 |
| Average |
96.1 |
24.6 |
42.3 |
61.1 |
3.7 |
1.6 |
| Median |
142.9 |
27.5 |
46.5 |
62.3 |
5.1 |
2.4 |
| Deviation |
65.3 |
3.5 |
5.0 |
1.4 |
2.4 |
1.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
43.4 ± 12.3 |
45.0 ± 0.6 |
52.6 ± 3.0 |
82.5 ± 5.0 |
0.96 ± 0.26 |
0.52 ± 0.12 |
| VC |
42.1 ± 9.2 |
34.3 ± 0.7 |
42.5 ± 2.4 |
87.5 ± 4.8 |
1.22 ± 0.24 |
0.48 ± 0.08 |
| MX1 |
42.8 ± 11.2 |
44.4 ± 0.6 |
52.1 ± 2.9 |
82.8 ± 5.0 |
0.96 ± 0.24 |
0.51 ± 0.10 |
| MX2 |
42.5 ± 10.8 |
43.9 ± 0.6 |
51.7 ± 2.9 |
83.1 ± 5.0 |
0.97 ± 0.23 |
0.51 ± 0.10 |
| MX3 |
42.3 ± 10.6 |
43.6 ± 0.6 |
51.5 ± 2.9 |
83.2 ± 5.0 |
0.97 ± 0.23 |
0.51 ± 0.10 |
| RH8 |
10.7 ± 8.9 |
33.0 ± 0.7 |
41.2 ± 2.3 |
88.0 ± 4.8 |
0.33 ± 0.28 |
0.12 ± 0.11 |
| RH9 |
11.0 ± 9.1 |
32.9 ± 0.7 |
41.0 ± 2.3 |
88.1 ± 4.8 |
0.34 ± 0.28 |
0.13 ± 0.11 |
| RH10 |
10.7 ± 9.3 |
33.4 ± 0.7 |
41.6 ± 2.3 |
87.9 ± 4.8 |
0.32 ± 0.28 |
0.12 ± 0.11 |
| Average |
30.7 |
38.8 |
46.8 |
85.4 |
0.8 |
0.4 |
| Median |
42.3 |
43.6 |
51.5 |
87.5 |
1.0 |
0.5 |
| Deviation |
16.5 |
5.8 |
5.6 |
2.7 |
0.4 |
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)
| 
