Database: Ace Shock Analysis
Event ID: 20023581314
Observation time: 12/24/2002 358.55183 1314 [UT]
|
|
General
Information (About, Top)
| Year |
2002 |
| Fractional day of year |
358.551829 |
| Arrival time of shock [seconds of day] |
47678.0 ± 32.0 |
| Shock type |
FF |
| Electron data availability |
0 |
| X GSE location of spacecraft [Re] |
0.038 |
| Y GSE location of spacecraft [Re] |
-0.000 |
| Z GSE location of spacecraft [Re] |
0.002 |
| Upstream plasma points selected for analysis |
0010 |
| Upstream field points selected for analysis |
0042 |
| Downstream plasma points selected for analysis |
0009
|
| Downstream field points selected for analysis |
0037 |
| Minimum chisq/dof for RH8,RH9,RH10 |
11.83, 16.78, 17.11 |
Event added to database
|
Sun May 1 22:55:08 2005
|
Event last processed
|
Tue May 3 14:38:51 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] |
-481.4 ± 1.6 |
-512.1 ± 3.2 |
| Vy GSE [km/s] |
-0.4 ± 3.7 |
-18.1 ± 5.5 |
| Vz GSE [km/s] |
9.6 ± 4.9 |
23.2 ± 7.7 |
| Wi [km/s] |
43.0 ± 1.7 |
53.7 ± 2.8 |
| We [km/s] |
1361.3 ± 54.7 |
1696.9 ± 89.5 |
| Ni [n/cc] |
5.5 ± 0.4 |
9.1 ± 1.2 |
| Bx GSE [nT] |
-6.3 ± 0.1 |
-8.5 ± 0.2 |
| By GSE [nT] |
1.7 ± 0.4 |
5.5 ± 0.9 |
| Bz GSE [nT] |
-1.2 ± 0.3 |
-3.3 ± 0.9 |
Plasma Beta
|
0.482 ± 0.478
|
0.480 ± 0.464
|
Sound Speed [km/s]
|
55.58 ± 2.23
|
69.28 ± 3.66
|
Alfven Speed [km/s]
|
62.21 ± 2.31
|
77.89 ± 4.45
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.903 ± 0.062 |
-0.396 ± 0.122 |
0.169 ± 0.168 |
9.74 ± 11.63 |
203.69 ± 7.67 |
| VC |
-0.821 ± 0.094 |
-0.457 ± 0.125 |
0.344 ± 0.330 |
20.10 ± 12.89 |
209.10 ± 8.29 |
| MX1 |
-0.892 ± 0.075 |
-0.371 ± 0.154 |
0.258 ± 0.252 |
14.94 ± 9.51 |
202.57 ± 9.83 |
| MX2 |
-0.891 ± 0.077 |
-0.364 ± 0.159 |
0.272 ± 0.265 |
15.80 ± 9.43 |
202.20 ± 10.15 |
| MX3 |
-0.890 ± 0.079 |
-0.356 ± 0.165 |
0.287 ± 0.279 |
16.67 ± 9.53 |
201.79 ± 10.58 |
| RH08 |
-0.982 ± 0.003 |
-0.095 ± 0.009 |
0.162 ± 0.161 |
9.32 ± 0.85 |
185.52 ± 0.54 |
| RH09 |
-0.982 ± 0.013 |
-0.077 ± 0.070 |
0.173 ± 0.171 |
9.97 ± 4.03 |
184.51 ± 4.10 |
| RH10 |
-0.987 ± 0.011 |
-0.061 ± 0.070 |
0.151 ± 0.150 |
8.68 ± 4.03 |
183.51 ± 4.07 |
| Average |
-0.918 |
-0.272 |
0.227 |
13.153 |
196.611 |
| Median |
-0.892 |
-0.356 |
0.258 |
14.942 |
202.197 |
| Deviation |
0.060 |
0.164 |
0.072 |
4.265 |
10.287 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
43.2 ± 2.9 |
531.2 ± 78.9 |
1.68 ± 0.24 |
| VC |
52.8 ± 2.7 |
495.4 ± 73.1 |
1.68 ± 0.24 |
| MX1 |
44.9 ± 2.7 |
527.7 ± 76.8 |
1.68 ± 0.24 |
| MX2 |
45.0 ± 2.7 |
527.2 ± 76.4 |
1.68 ± 0.24 |
| MX3 |
45.2 ± 2.7 |
526.5 ± 75.9 |
1.68 ± 0.24 |
| RH08 |
28.3 ± 2.5 |
560.2 ± 76.7 |
1.68 ± 0.24 |
| RH09 |
28.1 ± 2.4 |
559.4 ± 76.2 |
1.68 ± 0.24 |
| RH10 |
26.5 ± 2.4 |
560.4 ± 76.2 |
1.68 ± 0.24 |
| Average |
39.3 |
536.0 |
1.68 |
| Median |
44.9 |
531.2 |
1.68 |
| Deviation |
10.0 |
22.8 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
95.0 ± 2.4 |
32.8 ± 0.9 |
45.3 ± 1.7 |
76.7 ± 2.0 |
2.90 ± 0.12 |
1.24 ± 0.05 |
| VC |
97.0 ± 2.8 |
26.4 ± 0.7 |
37.6 ± 1.4 |
79.2 ± 2.0 |
3.68 ± 0.15 |
1.23 ± 0.05 |
| MX1 |
95.6 ± 2.4 |
31.7 ± 0.9 |
44.1 ± 1.6 |
77.2 ± 2.0 |
3.01 ± 0.12 |
1.24 ± 0.05 |
| MX2 |
95.5 ± 2.4 |
31.6 ± 0.9 |
44.0 ± 1.6 |
77.2 ± 2.0 |
3.02 ± 0.12 |
1.24 ± 0.05 |
| MX3 |
95.4 ± 2.4 |
31.5 ± 0.9 |
43.9 ± 1.6 |
77.3 ± 2.0 |
3.03 ± 0.12 |
1.24 ± 0.05 |
| RH8 |
85.8 ± 1.6 |
42.3 ± 1.2 |
54.8 ± 2.0 |
72.0 ± 1.8 |
2.03 ± 0.08 |
1.19 ± 0.05 |
| RH9 |
85.1 ± 1.6 |
42.4 ± 1.2 |
54.9 ± 2.0 |
71.9 ± 1.8 |
2.01 ± 0.08 |
1.18 ± 0.05 |
| RH10 |
83.9 ± 1.5 |
43.4 ± 1.2 |
55.7 ± 2.1 |
71.3 ± 1.8 |
1.94 ± 0.08 |
1.18 ± 0.05 |
| Average |
91.7 |
35.3 |
47.5 |
75.3 |
2.7 |
1.2 |
| Median |
95.4 |
32.8 |
45.3 |
77.2 |
3.0 |
1.2 |
| Deviation |
5.6 |
6.4 |
6.7 |
3.1 |
0.6 |
0.0 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
57.9 ± 4.7 |
40.9 ± 1.7 |
56.8 ± 3.2 |
95.9 ± 3.8 |
1.42 ± 0.11 |
0.60 ± 0.05 |
| VC |
59.0 ± 5.4 |
32.9 ± 1.3 |
47.0 ± 2.7 |
99.0 ± 4.0 |
1.79 ± 0.14 |
0.60 ± 0.05 |
| MX1 |
58.1 ± 4.8 |
39.6 ± 1.6 |
55.2 ± 3.2 |
96.5 ± 3.9 |
1.47 ± 0.11 |
0.60 ± 0.04 |
| MX2 |
58.0 ± 4.9 |
39.5 ± 1.6 |
55.1 ± 3.1 |
96.6 ± 3.9 |
1.47 ± 0.11 |
0.60 ± 0.04 |
| MX3 |
57.8 ± 4.9 |
39.3 ± 1.6 |
54.9 ± 3.1 |
96.6 ± 3.9 |
1.47 ± 0.11 |
0.60 ± 0.04 |
| RH8 |
51.7 ± 3.7 |
52.7 ± 2.2 |
68.6 ± 3.9 |
90.0 ± 3.6 |
0.98 ± 0.07 |
0.57 ± 0.04 |
| RH9 |
51.2 ± 3.7 |
52.9 ± 2.2 |
68.7 ± 3.9 |
89.9 ± 3.6 |
0.97 ± 0.07 |
0.57 ± 0.04 |
| RH10 |
50.5 ± 3.6 |
54.1 ± 2.2 |
69.7 ± 4.0 |
89.2 ± 3.6 |
0.93 ± 0.07 |
0.57 ± 0.04 |
| Average |
55.5 |
44.0 |
59.5 |
94.2 |
1.3 |
0.6 |
| Median |
57.9 |
40.9 |
56.8 |
96.5 |
1.5 |
0.6 |
| Deviation |
3.7 |
8.0 |
8.4 |
3.8 |
0.3 |
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)
| 
