Database: Ace Shock Analysis
Event ID: 20012980802
Observation time: 10/25/2001 298.33473 0802 [UT]
|
|
General
Information (About, Top)
| Year |
2001 |
| Fractional day of year |
298.334734 |
| Arrival time of shock [seconds of day] |
28921.0 ± 25.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.035 |
| Y GSE location of spacecraft [Re] |
0.003 |
| Z GSE location of spacecraft [Re] |
-0.004 |
| Upstream plasma points selected for analysis |
0013 |
| Upstream field points selected for analysis |
0057 |
| Downstream plasma points selected for analysis |
0014
|
| Downstream field points selected for analysis |
0056 |
| Minimum chisq/dof for RH8,RH9,RH10 |
6.28, 15.21, 16.87 |
Event added to database
|
Sat Apr 30 21:52:54 2005
|
Event last processed
|
Tue May 3 14:08:54 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] |
-355.2 ± 2.5 |
-451.2 ± 5.8 |
| Vy GSE [km/s] |
-30.9 ± 4.7 |
-60.2 ± 6.5 |
| Vz GSE [km/s] |
-2.8 ± 3.1 |
44.8 ± 8.1 |
| Wi [km/s] |
11.9 ± 2.3 |
43.5 ± 6.5 |
| We [km/s] |
375.5 ± 72.9 |
1376.6 ± 204.4 |
| Ni [n/cc] |
4.9 ± 0.6 |
18.5 ± 1.4 |
| Bx GSE [nT] |
2.3 ± 0.2 |
5.4 ± 1.4 |
| By GSE [nT] |
-0.5 ± 0.4 |
-3.1 ± 1.0 |
| Bz GSE [nT] |
0.3 ± 0.2 |
3.8 ± 0.8 |
Plasma Beta
|
0.256 ± 0.237
|
1.398 ± 1.171
|
Sound Speed [km/s]
|
15.33 ± 2.98
|
56.20 ± 8.35
|
Alfven Speed [km/s]
|
23.82 ± 2.68
|
37.92 ± 4.29
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.871 ± 0.134 |
-0.113 ± 0.394 |
0.477 ± 0.437 |
28.51 ± 15.06 |
187.39 ± 25.89 |
| VC |
-0.864 ± 0.041 |
-0.265 ± 0.072 |
0.428 ± 0.399 |
25.32 ± 4.81 |
197.07 ± 4.73 |
| MX1 |
-0.824 ± 0.115 |
-0.330 ± 0.214 |
0.460 ± 0.424 |
27.39 ± 10.42 |
201.83 ± 14.72 |
| MX2 |
-0.826 ± 0.107 |
-0.315 ± 0.179 |
0.467 ± 0.430 |
27.84 ± 11.01 |
200.87 ± 12.22 |
| MX3 |
-0.827 ± 0.108 |
-0.312 ± 0.174 |
0.468 ± 0.430 |
27.91 ± 11.38 |
200.70 ± 11.85 |
| RH08 |
-0.901 ± 0.005 |
-0.268 ± 0.009 |
0.341 ± 0.327 |
19.92 ± 0.72 |
196.55 ± 0.55 |
| RH09 |
-0.562 ± 0.052 |
-0.822 ± 0.036 |
-0.095 ± 0.095 |
-5.45 ± 3.79 |
235.65 ± 3.61 |
| RH10 |
-0.592 ± 0.055 |
-0.804 ± 0.041 |
-0.061 ± 0.061 |
-3.52 ± 4.03 |
233.65 ± 3.95 |
| Average |
-0.783 |
-0.404 |
0.311 |
18.490 |
206.714 |
| Median |
-0.826 |
-0.312 |
0.460 |
27.390 |
200.869 |
| Deviation |
0.131 |
0.262 |
0.244 |
14.453 |
17.836 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
41.0 ± 6.0 |
461.1 ± 8.5 |
3.87 ± 0.52 |
| VC |
43.8 ± 7.3 |
464.3 ± 8.3 |
3.87 ± 0.52 |
| MX1 |
48.3 ± 7.5 |
451.4 ± 8.0 |
3.87 ± 0.52 |
| MX2 |
48.0 ± 7.4 |
451.6 ± 8.0 |
3.87 ± 0.52 |
| MX3 |
47.9 ± 7.3 |
451.7 ± 8.0 |
3.87 ± 0.52 |
| RH08 |
40.0 ± 7.9 |
477.7 ± 8.7 |
3.87 ± 0.52 |
| RH09 |
68.4 ± 10.8 |
325.2 ± 7.6 |
3.87 ± 0.52 |
| RH10 |
66.6 ± 10.7 |
340.5 ± 7.6 |
3.87 ± 0.52 |
| Average |
50.5 |
427.9 |
3.87 |
| Median |
48.0 |
451.7 |
3.87 |
| Deviation |
11.0 |
59.5 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
149.4 ± 2.4 |
10.4 ± 1.7 |
18.0 ± 2.0 |
26.4 ± 3.0 |
14.76 ± 2.51 |
5.73 ± 0.69 |
| VC |
150.4 ± 2.9 |
9.8 ± 1.6 |
17.2 ± 1.9 |
26.6 ± 3.1 |
15.67 ± 2.65 |
5.72 ± 0.70 |
| MX1 |
149.7 ± 3.0 |
9.0 ± 1.5 |
15.9 ± 1.8 |
26.9 ± 3.1 |
17.10 ± 2.86 |
5.63 ± 0.69 |
| MX2 |
149.7 ± 3.0 |
9.0 ± 1.5 |
16.0 ± 1.8 |
26.9 ± 3.1 |
16.98 ± 2.84 |
5.64 ± 0.69 |
| MX3 |
149.7 ± 2.9 |
9.1 ± 1.5 |
16.0 ± 1.8 |
26.9 ± 3.1 |
16.95 ± 2.84 |
5.64 ± 0.69 |
| RH8 |
150.3 ± 2.9 |
10.6 ± 1.7 |
18.3 ± 2.1 |
26.3 ± 3.0 |
14.58 ± 2.49 |
5.78 ± 0.71 |
| RH9 |
100.1 ± 4.9 |
4.8 ± 0.7 |
8.8 ± 1.0 |
28.0 ± 3.3 |
21.48 ± 3.61 |
3.62 ± 0.49 |
| RH10 |
105.3 ± 4.8 |
5.2 ± 0.8 |
9.5 ± 1.1 |
27.9 ± 3.3 |
20.89 ± 3.50 |
3.82 ± 0.51 |
| Average |
138.1 |
8.5 |
14.9 |
27.0 |
17.3 |
5.2 |
| Median |
149.7 |
9.1 |
16.0 |
26.9 |
17.0 |
5.6 |
| Deviation |
21.9 |
2.3 |
3.7 |
0.6 |
2.6 |
0.9 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
39.7 ± 2.5 |
25.4 ± 2.6 |
28.6 ± 3.2 |
63.1 ± 7.4 |
1.58 ± 0.21 |
0.64 ± 0.09 |
| VC |
39.3 ± 2.2 |
24.0 ± 2.4 |
27.3 ± 3.1 |
63.6 ± 7.4 |
1.65 ± 0.20 |
0.63 ± 0.09 |
| MX1 |
39.0 ± 2.2 |
21.9 ± 2.2 |
25.2 ± 2.9 |
64.4 ± 7.4 |
1.80 ± 0.21 |
0.61 ± 0.08 |
| MX2 |
39.0 ± 2.2 |
22.1 ± 2.2 |
25.4 ± 2.9 |
64.3 ± 7.4 |
1.78 ± 0.21 |
0.61 ± 0.08 |
| MX3 |
39.0 ± 2.2 |
22.1 ± 2.2 |
25.4 ± 2.9 |
64.3 ± 7.4 |
1.78 ± 0.21 |
0.61 ± 0.08 |
| RH8 |
39.7 ± 2.5 |
25.9 ± 2.6 |
29.1 ± 3.3 |
62.9 ± 7.4 |
1.55 ± 0.21 |
0.64 ± 0.11 |
| RH9 |
26.5 ± 4.2 |
11.6 ± 1.2 |
13.9 ± 1.6 |
67.0 ± 7.5 |
2.31 ± 0.47 |
0.40 ± 0.10 |
| RH10 |
27.9 ± 4.0 |
12.6 ± 1.2 |
15.1 ± 1.7 |
66.8 ± 7.4 |
2.24 ± 0.43 |
0.42 ± 0.10 |
| Average |
36.3 |
20.7 |
23.8 |
64.5 |
1.8 |
0.6 |
| Median |
39.0 |
22.1 |
25.4 |
64.3 |
1.8 |
0.6 |
| Deviation |
5.6 |
5.5 |
5.9 |
1.6 |
0.3 |
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)
| 
