Database: Ace Shock Analysis
Event ID: 20011111506
Observation time: 04/21/2001 111.62963 1506 [UT]
|
|
General
Information (About, Top)
| Year |
2001 |
| Fractional day of year |
111.629630 |
| Arrival time of shock [seconds of day] |
54400.0 ± 32.0 |
| Shock type |
FF |
| Electron data availability |
0 |
| X GSE location of spacecraft [Re] |
0.035 |
| Y GSE location of spacecraft [Re] |
0.001 |
| Z GSE location of spacecraft [Re] |
-0.004 |
| Upstream plasma points selected for analysis |
0011 |
| Upstream field points selected for analysis |
0046 |
| Downstream plasma points selected for analysis |
0012
|
| Downstream field points selected for analysis |
0054 |
| Minimum chisq/dof for RH8,RH9,RH10 |
5.57, 10.90, 11.02 |
Event added to database
|
Sat Apr 30 21:51:02 2005
|
Event last processed
|
Tue May 3 13:57:42 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.009 ± 0.000
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-350.3 ± 2.1 |
-394.1 ± 6.6 |
| Vy GSE [km/s] |
-16.4 ± 1.9 |
-2.6 ± 5.2 |
| Vz GSE [km/s] |
-10.0 ± 1.0 |
-9.0 ± 3.6 |
| Wi [km/s] |
20.8 ± 1.3 |
29.0 ± 3.6 |
| We [km/s] |
658.6 ± 41.8 |
918.6 ± 113.1 |
| Ni [n/cc] |
6.6 ± 0.5 |
14.9 ± 2.1 |
| Bx GSE [nT] |
1.8 ± 0.2 |
0.5 ± 2.1 |
| By GSE [nT] |
-2.1 ± 0.2 |
-5.3 ± 1.0 |
| Bz GSE [nT] |
1.0 ± 0.1 |
1.7 ± 1.5 |
Plasma Beta
|
0.714 ± 0.696
|
0.768 ± 0.649
|
Sound Speed [km/s]
|
26.89 ± 1.71
|
37.50 ± 4.62
|
Alfven Speed [km/s]
|
24.81 ± 1.44
|
34.81 ± 3.94
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.874 ± 0.223 |
0.386 ± 0.433 |
-0.294 ± 0.285 |
-17.07 ± 25.00 |
156.15 ± 28.19 |
| VC |
-0.954 ± 0.034 |
0.298 ± 0.108 |
0.017 ± 0.017 |
0.96 ± 4.23 |
162.66 ± 6.46 |
| MX1 |
-0.970 ± 0.119 |
0.241 ± 0.473 |
0.046 ± 0.046 |
2.62 ± 21.15 |
166.05 ± 27.93 |
| MX2 |
-0.953 ± 0.123 |
0.297 ± 0.389 |
0.064 ± 0.064 |
3.68 ± 20.26 |
162.69 ± 23.40 |
| MX3 |
-0.939 ± 0.124 |
0.337 ± 0.338 |
0.072 ± 0.072 |
4.13 ± 22.91 |
160.24 ± 20.60 |
| RH08 |
-0.993 ± 0.001 |
0.113 ± 0.010 |
-0.028 ± 0.028 |
-1.60 ± 0.57 |
173.48 ± 0.55 |
| RH09 |
-0.996 ± 0.006 |
0.061 ± 0.069 |
-0.061 ± 0.061 |
-3.52 ± 4.03 |
176.49 ± 3.95 |
| RH10 |
-0.996 ± 0.006 |
0.044 ± 0.069 |
-0.073 ± 0.072 |
-4.16 ± 4.03 |
177.49 ± 3.95 |
| Average |
-0.959 |
0.222 |
-0.032 |
-1.871 |
166.909 |
| Median |
-0.954 |
0.297 |
0.017 |
0.961 |
166.054 |
| Deviation |
0.041 |
0.132 |
0.119 |
6.909 |
7.962 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
24.3 ± 4.4 |
384.3 ± 11.6 |
2.24 ± 0.39 |
| VC |
37.7 ± 3.8 |
415.9 ± 12.7 |
2.24 ± 0.39 |
| MX1 |
41.4 ± 3.8 |
421.6 ± 12.9 |
2.24 ± 0.39 |
| MX2 |
39.4 ± 3.7 |
415.2 ± 12.8 |
2.24 ± 0.39 |
| MX3 |
37.8 ± 3.7 |
408.9 ± 12.7 |
2.24 ± 0.39 |
| RH08 |
45.6 ± 4.1 |
431.5 ± 12.9 |
2.24 ± 0.39 |
| RH09 |
47.5 ± 4.1 |
432.4 ± 12.9 |
2.24 ± 0.39 |
| RH10 |
48.1 ± 4.1 |
432.4 ± 12.9 |
2.24 ± 0.39 |
| Average |
40.2 |
417.8 |
2.24 |
| Median |
41.4 |
421.6 |
2.24 |
| Deviation |
7.7 |
16.2 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
81.5 ± 1.9 |
19.7 ± 0.9 |
22.6 ± 1.3 |
30.9 ± 1.4 |
4.15 ± 0.23 |
2.64 ± 0.15 |
| VC |
86.6 ± 2.1 |
16.0 ± 0.7 |
19.6 ± 1.1 |
32.9 ± 1.5 |
5.42 ± 0.28 |
2.63 ± 0.14 |
| MX1 |
86.4 ± 2.1 |
14.9 ± 0.7 |
18.6 ± 1.1 |
33.4 ± 1.5 |
5.79 ± 0.30 |
2.59 ± 0.14 |
| MX2 |
86.9 ± 2.1 |
15.5 ± 0.7 |
19.2 ± 1.1 |
33.2 ± 1.5 |
5.61 ± 0.29 |
2.63 ± 0.14 |
| MX3 |
86.3 ± 2.1 |
16.0 ± 0.7 |
19.6 ± 1.1 |
32.9 ± 1.5 |
5.41 ± 0.29 |
2.63 ± 0.14 |
| RH8 |
85.2 ± 2.1 |
13.7 ± 0.6 |
17.4 ± 1.0 |
33.9 ± 1.5 |
6.22 ± 0.31 |
2.52 ± 0.13 |
| RH9 |
83.8 ± 2.1 |
13.2 ± 0.6 |
16.8 ± 1.0 |
34.2 ± 1.5 |
6.37 ± 0.32 |
2.46 ± 0.13 |
| RH10 |
83.3 ± 2.1 |
13.0 ± 0.6 |
16.6 ± 1.0 |
34.2 ± 1.5 |
6.43 ± 0.32 |
2.44 ± 0.12 |
| Average |
85.0 |
15.2 |
18.8 |
33.2 |
5.7 |
2.6 |
| Median |
86.3 |
15.5 |
19.2 |
33.4 |
5.8 |
2.6 |
| Deviation |
2.0 |
2.1 |
2.0 |
1.1 |
0.7 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
38.2 ± 6.3 |
26.9 ± 1.9 |
31.7 ± 3.6 |
43.8 ± 2.2 |
1.43 ± 0.28 |
0.87 ± 0.14 |
| VC |
40.7 ± 7.1 |
22.0 ± 1.4 |
27.5 ± 3.1 |
46.5 ± 2.2 |
1.86 ± 0.38 |
0.88 ± 0.15 |
| MX1 |
40.6 ± 7.1 |
20.6 ± 1.3 |
26.1 ± 3.0 |
47.2 ± 2.2 |
1.99 ± 0.40 |
0.86 ± 0.15 |
| MX2 |
41.1 ± 7.2 |
21.3 ± 1.4 |
26.9 ± 3.0 |
46.8 ± 2.2 |
1.94 ± 0.40 |
0.88 ± 0.15 |
| MX3 |
40.5 ± 7.2 |
22.0 ± 1.4 |
27.5 ± 3.1 |
46.5 ± 2.2 |
1.86 ± 0.39 |
0.87 ± 0.15 |
| RH8 |
40.2 ± 6.8 |
18.9 ± 1.2 |
24.4 ± 2.8 |
47.8 ± 2.3 |
2.14 ± 0.41 |
0.84 ± 0.14 |
| RH9 |
39.4 ± 6.6 |
18.1 ± 1.2 |
23.5 ± 2.7 |
48.1 ± 2.3 |
2.18 ± 0.41 |
0.82 ± 0.13 |
| RH10 |
39.2 ± 6.6 |
17.9 ± 1.1 |
23.2 ± 2.6 |
48.2 ± 2.3 |
2.20 ± 0.41 |
0.81 ± 0.13 |
| Average |
40.0 |
21.0 |
26.4 |
46.9 |
2.0 |
0.9 |
| Median |
40.5 |
21.3 |
26.9 |
47.2 |
2.0 |
0.9 |
| Deviation |
1.0 |
2.9 |
2.8 |
1.4 |
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)
| 
