Database: Ace Shock Analysis
Event ID: 20022030450
Observation time: 07/22/2002 203.20172 0450 [UT]
|
|
General
Information (About, Top)
| Year |
2002 |
| Fractional day of year |
203.201725 |
| Arrival time of shock [seconds of day] |
17429.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.038 |
| Y GSE location of spacecraft [Re] |
-0.004 |
| Z GSE location of spacecraft [Re] |
0.004 |
| Upstream plasma points selected for analysis |
0008 |
| Upstream field points selected for analysis |
0034 |
| Downstream plasma points selected for analysis |
0007
|
| Downstream field points selected for analysis |
0028 |
| Minimum chisq/dof for RH8,RH9,RH10 |
11.62, 13.99, 14.33 |
Event added to database
|
Sun May 1 22:30:44 2005
|
Event last processed
|
Tue May 3 14:30:06 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.007 ± 0.001
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-479.9 ± 4.1 |
-505.4 ± 2.5 |
| Vy GSE [km/s] |
4.0 ± 3.8 |
-16.7 ± 5.5 |
| Vz GSE [km/s] |
17.7 ± 1.3 |
54.7 ± 2.2 |
| Wi [km/s] |
15.5 ± 1.7 |
24.6 ± 0.8 |
| We [km/s] |
490.2 ± 52.9 |
776.8 ± 24.4 |
| Ni [n/cc] |
4.7 ± 0.4 |
7.6 ± 0.4 |
| Bx GSE [nT] |
-4.0 ± 0.4 |
-6.1 ± 0.9 |
| By GSE [nT] |
3.3 ± 0.5 |
7.3 ± 0.8 |
| Bz GSE [nT] |
-0.2 ± 0.3 |
-2.1 ± 0.5 |
Plasma Beta
|
0.085 ± 0.082
|
0.101 ± 0.100
|
Sound Speed [km/s]
|
20.01 ± 2.16
|
31.71 ± 1.00
|
Alfven Speed [km/s]
|
53.15 ± 2.31
|
77.43 ± 3.06
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.817 ± 0.215 |
0.108 ± 0.397 |
0.567 ± 0.496 |
34.51 ± 21.24 |
172.44 ± 27.79 |
| VC |
-0.519 ± 0.089 |
-0.413 ± 0.091 |
0.748 ± 0.561 |
48.44 ± 6.62 |
218.52 ± 8.04 |
| MX1 |
-0.769 ± 0.096 |
-0.089 ± 0.090 |
0.633 ± 0.531 |
39.29 ± 8.69 |
186.60 ± 6.69 |
| MX2 |
-0.755 ± 0.074 |
-0.094 ± 0.099 |
0.649 ± 0.537 |
40.46 ± 6.50 |
187.08 ± 7.51 |
| MX3 |
-0.742 ± 0.068 |
-0.096 ± 0.118 |
0.664 ± 0.543 |
41.60 ± 5.75 |
187.35 ± 9.10 |
| RH08 |
-0.954 ± 0.005 |
-0.092 ± 0.013 |
0.285 ± 0.277 |
16.55 ± 1.03 |
185.52 ± 0.80 |
| RH09 |
-0.962 ± 0.019 |
-0.076 ± 0.071 |
0.263 ± 0.256 |
15.22 ± 4.00 |
184.51 ± 4.20 |
| RH10 |
-0.962 ± 0.019 |
-0.076 ± 0.071 |
0.263 ± 0.256 |
15.22 ± 4.00 |
184.51 ± 4.20 |
| Average |
-0.810 |
-0.103 |
0.509 |
31.413 |
188.315 |
| Median |
-0.769 |
-0.089 |
0.633 |
39.294 |
186.596 |
| Deviation |
0.152 |
0.143 |
0.204 |
13.587 |
13.130 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
48.2 ± 1.6 |
502.4 ± 21.7 |
1.63 ± 0.16 |
| VC |
84.2 ± 2.2 |
384.8 ± 22.9 |
1.63 ± 0.16 |
| MX1 |
59.9 ± 2.1 |
494.2 ± 22.9 |
1.63 ± 0.16 |
| MX2 |
60.8 ± 2.0 |
488.7 ± 22.9 |
1.63 ± 0.16 |
| MX3 |
61.6 ± 1.9 |
483.2 ± 23.0 |
1.63 ± 0.16 |
| RH08 |
49.0 ± 4.8 |
556.5 ± 19.8 |
1.63 ± 0.16 |
| RH09 |
47.6 ± 4.9 |
557.7 ± 19.4 |
1.63 ± 0.16 |
| RH10 |
47.6 ± 4.9 |
557.7 ± 19.4 |
1.63 ± 0.16 |
| Average |
57.4 |
503.2 |
1.63 |
| Median |
59.9 |
502.4 |
1.63 |
| Deviation |
12.5 |
57.9 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
100.0 ± 2.4 |
12.8 ± 1.3 |
35.4 ± 1.5 |
55.3 ± 2.6 |
7.87 ± 0.74 |
1.81 ± 0.10 |
| VC |
124.1 ± 2.6 |
1.9 ± 0.2 |
5.3 ± 0.2 |
56.8 ± 2.7 |
66.46 ± 5.67 |
2.19 ± 0.11 |
| MX1 |
114.5 ± 2.7 |
9.5 ± 1.0 |
26.7 ± 1.2 |
56.0 ± 2.6 |
12.11 ± 1.08 |
2.05 ± 0.11 |
| MX2 |
115.3 ± 2.6 |
9.2 ± 0.9 |
25.9 ± 1.1 |
56.1 ± 2.6 |
12.56 ± 1.12 |
2.06 ± 0.11 |
| MX3 |
116.0 ± 2.5 |
9.0 ± 0.9 |
25.3 ± 1.1 |
56.1 ± 2.6 |
12.97 ± 1.16 |
2.07 ± 0.11 |
| RH8 |
94.0 ± 3.9 |
12.6 ± 1.3 |
34.9 ± 1.5 |
55.4 ± 2.6 |
7.51 ± 0.63 |
1.70 ± 0.10 |
| RH9 |
91.8 ± 3.9 |
12.9 ± 1.3 |
35.8 ± 1.6 |
55.3 ± 2.6 |
7.14 ± 0.60 |
1.66 ± 0.10 |
| RH10 |
91.8 ± 3.9 |
12.9 ± 1.3 |
35.8 ± 1.6 |
55.3 ± 2.6 |
7.14 ± 0.60 |
1.66 ± 0.10 |
| Average |
105.9 |
10.1 |
28.1 |
55.8 |
16.7 |
1.9 |
| Median |
114.5 |
12.6 |
34.9 |
56.0 |
12.1 |
2.0 |
| Deviation |
12.9 |
3.8 |
10.4 |
0.5 |
20.3 |
0.2 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
60.5 ± 2.8 |
20.1 ± 0.5 |
51.6 ± 2.0 |
81.2 ± 2.8 |
3.00 ± 0.15 |
0.75 ± 0.05 |
| VC |
74.7 ± 2.3 |
2.9 ± 0.1 |
7.8 ± 0.3 |
83.6 ± 2.7 |
25.33 ± 1.03 |
0.89 ± 0.03 |
| MX1 |
69.6 ± 2.5 |
15.0 ± 0.4 |
38.8 ± 1.5 |
82.3 ± 2.7 |
4.65 ± 0.20 |
0.85 ± 0.04 |
| MX2 |
70.1 ± 2.4 |
14.5 ± 0.4 |
37.7 ± 1.5 |
82.4 ± 2.7 |
4.83 ± 0.20 |
0.85 ± 0.04 |
| MX3 |
70.5 ± 2.4 |
14.2 ± 0.4 |
36.8 ± 1.5 |
82.5 ± 2.7 |
4.99 ± 0.21 |
0.86 ± 0.04 |
| RH8 |
57.2 ± 2.6 |
19.8 ± 0.5 |
50.8 ± 2.0 |
81.3 ± 2.8 |
2.89 ± 0.15 |
0.70 ± 0.04 |
| RH9 |
56.0 ± 2.6 |
20.4 ± 0.5 |
52.2 ± 2.1 |
81.2 ± 2.8 |
2.75 ± 0.15 |
0.69 ± 0.04 |
| RH10 |
56.0 ± 2.6 |
20.4 ± 0.5 |
52.2 ± 2.1 |
81.2 ± 2.8 |
2.75 ± 0.15 |
0.69 ± 0.04 |
| Average |
64.3 |
15.9 |
41.0 |
82.0 |
6.4 |
0.8 |
| Median |
69.6 |
19.8 |
50.8 |
82.3 |
4.7 |
0.8 |
| Deviation |
7.7 |
5.9 |
15.1 |
0.9 |
7.7 |
0.1 |
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)
| 
