Database: Ace Shock Analysis
Event ID: 20021301029
Observation time: 05/10/2002 130.43685 1029 [UT]
|
|
General
Information (About, Top)
| Year |
2002 |
| Fractional day of year |
130.436852 |
| Arrival time of shock [seconds of day] |
37744.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
| X GSE location of spacecraft [Re] |
0.036 |
| Y GSE location of spacecraft [Re] |
0.006 |
| Z GSE location of spacecraft [Re] |
-0.003 |
| Upstream plasma points selected for analysis |
0010 |
| Upstream field points selected for analysis |
0038 |
| Downstream plasma points selected for analysis |
0012
|
| Downstream field points selected for analysis |
0047 |
| Minimum chisq/dof for RH8,RH9,RH10 |
8.38, 12.87, 13.15 |
Event added to database
|
Sun May 1 22:14:30 2005
|
Event last processed
|
Tue May 3 14:22:01 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.009 ± 0.001
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-355.8 ± 1.2 |
-410.8 ± 3.0 |
| Vy GSE [km/s] |
13.0 ± 1.6 |
4.1 ± 5.7 |
| Vz GSE [km/s] |
5.5 ± 1.7 |
24.5 ± 8.5 |
| Wi [km/s] |
27.9 ± 1.6 |
40.5 ± 3.8 |
| We [km/s] |
881.6 ± 50.8 |
1279.6 ± 120.0 |
| Ni [n/cc] |
8.2 ± 0.3 |
20.6 ± 2.5 |
| Bx GSE [nT] |
4.3 ± 0.1 |
8.3 ± 1.3 |
| By GSE [nT] |
-3.5 ± 0.2 |
-10.7 ± 1.2 |
| Bz GSE [nT] |
1.5 ± 0.3 |
5.2 ± 2.2 |
Plasma Beta
|
0.409 ± 0.421
|
0.325 ± 0.333
|
Sound Speed [km/s]
|
35.99 ± 2.08
|
52.24 ± 4.90
|
Alfven Speed [km/s]
|
43.68 ± 1.67
|
71.52 ± 5.64
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.953 ± 0.118 |
-0.170 ± 0.322 |
0.249 ± 0.244 |
14.41 ± 23.99 |
190.12 ± 19.30 |
| VC |
-0.935 ± 0.047 |
-0.152 ± 0.098 |
0.319 ± 0.308 |
18.60 ± 8.05 |
189.24 ± 6.00 |
| MX1 |
-0.880 ± 0.057 |
-0.275 ± 0.112 |
0.388 ± 0.368 |
22.86 ± 6.95 |
197.34 ± 7.25 |
| MX2 |
-0.882 ± 0.054 |
-0.269 ± 0.110 |
0.388 ± 0.367 |
22.82 ± 6.63 |
196.96 ± 7.11 |
| MX3 |
-0.883 ± 0.054 |
-0.266 ± 0.110 |
0.388 ± 0.367 |
22.80 ± 6.61 |
196.78 ± 7.09 |
| RH08 |
-0.900 ± 0.006 |
-0.285 ± 0.012 |
0.330 ± 0.317 |
19.25 ± 0.93 |
197.55 ± 0.79 |
| RH09 |
-0.954 ± 0.021 |
-0.143 ± 0.070 |
0.263 ± 0.256 |
15.22 ± 4.00 |
188.52 ± 4.20 |
| RH10 |
-0.960 ± 0.020 |
-0.127 ± 0.070 |
0.251 ± 0.246 |
14.56 ± 3.99 |
187.52 ± 4.20 |
| Average |
-0.918 |
-0.211 |
0.322 |
18.814 |
193.003 |
| Median |
-0.900 |
-0.170 |
0.330 |
19.245 |
196.777 |
| Deviation |
0.036 |
0.068 |
0.062 |
3.760 |
4.504 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
56.4 ± 1.5 |
437.0 ± 9.4 |
2.54 ± 0.31 |
| VC |
57.9 ± 1.6 |
431.3 ± 9.7 |
2.54 ± 0.31 |
| MX1 |
66.5 ± 1.6 |
408.6 ± 10.7 |
2.54 ± 0.31 |
| MX2 |
66.2 ± 1.6 |
409.5 ± 10.7 |
2.54 ± 0.31 |
| MX3 |
66.1 ± 1.6 |
409.9 ± 10.6 |
2.54 ± 0.31 |
| RH08 |
65.0 ± 1.5 |
416.0 ± 10.4 |
2.54 ± 0.31 |
| RH09 |
55.5 ± 1.5 |
437.5 ± 9.4 |
2.54 ± 0.31 |
| RH10 |
54.3 ± 1.5 |
439.5 ± 9.2 |
2.54 ± 0.31 |
| Average |
61.0 |
423.7 |
2.54 |
| Median |
65.0 |
431.3 |
2.54 |
| Deviation |
5.4 |
13.9 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
98.6 ± 0.9 |
16.0 ± 0.7 |
24.1 ± 0.9 |
54.3 ± 2.1 |
6.17 ± 0.23 |
1.82 ± 0.06 |
| VC |
98.6 ± 0.9 |
15.3 ± 0.7 |
23.2 ± 0.9 |
54.5 ± 2.1 |
6.44 ± 0.25 |
1.81 ± 0.06 |
| MX1 |
97.1 ± 0.8 |
11.3 ± 0.5 |
17.4 ± 0.7 |
55.5 ± 2.1 |
8.63 ± 0.34 |
1.75 ± 0.06 |
| MX2 |
97.2 ± 0.8 |
11.4 ± 0.5 |
17.6 ± 0.7 |
55.5 ± 2.1 |
8.52 ± 0.33 |
1.76 ± 0.06 |
| MX3 |
97.2 ± 0.8 |
11.5 ± 0.5 |
17.7 ± 0.7 |
55.4 ± 2.1 |
8.47 ± 0.33 |
1.76 ± 0.06 |
| RH8 |
97.6 ± 0.8 |
12.0 ± 0.5 |
18.5 ± 0.7 |
55.3 ± 2.1 |
8.14 ± 0.31 |
1.77 ± 0.06 |
| RH9 |
98.4 ± 0.9 |
16.4 ± 0.7 |
24.7 ± 0.9 |
54.2 ± 2.1 |
6.00 ± 0.23 |
1.82 ± 0.06 |
| RH10 |
98.4 ± 0.9 |
17.0 ± 0.7 |
25.5 ± 1.0 |
54.0 ± 2.0 |
5.81 ± 0.22 |
1.82 ± 0.06 |
| Average |
97.9 |
13.9 |
21.1 |
54.8 |
7.3 |
1.8 |
| Median |
98.4 |
15.3 |
23.2 |
55.3 |
8.1 |
1.8 |
| Deviation |
0.7 |
2.5 |
3.6 |
0.6 |
1.3 |
0.0 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
39.9 ± 2.5 |
24.2 ± 1.8 |
39.5 ± 3.1 |
85.3 ± 5.9 |
1.66 ± 0.14 |
0.47 ± 0.03 |
| VC |
39.8 ± 2.7 |
23.2 ± 1.8 |
38.1 ± 3.0 |
85.6 ± 5.9 |
1.72 ± 0.14 |
0.47 ± 0.04 |
| MX1 |
38.9 ± 3.3 |
17.1 ± 1.3 |
28.5 ± 2.2 |
87.0 ± 6.0 |
2.29 ± 0.24 |
0.45 ± 0.04 |
| MX2 |
38.9 ± 3.3 |
17.3 ± 1.3 |
28.9 ± 2.3 |
87.0 ± 6.0 |
2.26 ± 0.23 |
0.45 ± 0.04 |
| MX3 |
38.9 ± 3.3 |
17.4 ± 1.3 |
29.0 ± 2.3 |
86.9 ± 6.0 |
2.25 ± 0.23 |
0.45 ± 0.04 |
| RH8 |
39.3 ± 3.0 |
18.2 ± 1.4 |
30.2 ± 2.4 |
86.8 ± 6.0 |
2.17 ± 0.21 |
0.45 ± 0.04 |
| RH9 |
39.7 ± 2.5 |
24.8 ± 1.9 |
40.5 ± 3.2 |
85.1 ± 5.9 |
1.61 ± 0.13 |
0.47 ± 0.03 |
| RH10 |
39.7 ± 2.5 |
25.6 ± 2.0 |
41.7 ± 3.3 |
84.9 ± 5.9 |
1.56 ± 0.12 |
0.47 ± 0.03 |
| Average |
39.4 |
21.0 |
34.5 |
86.1 |
1.9 |
0.5 |
| Median |
39.7 |
23.2 |
38.1 |
86.8 |
2.2 |
0.5 |
| Deviation |
0.4 |
3.8 |
5.9 |
0.9 |
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)
| 
