Database: Ace Shock Analysis
Event ID: 20012291016
Observation time: 08/17/2001 229.42780 1016 [UT]
|
|
General
Information (About, Top)
| Year |
2001 |
| Fractional day of year |
229.427801 |
| Arrival time of shock [seconds of day] |
36962.0 ± 16.0 |
| Shock type |
SF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.038 |
| Y GSE location of spacecraft [Re] |
-0.006 |
| Z GSE location of spacecraft [Re] |
0.003 |
| Upstream plasma points selected for analysis |
0013 |
| Upstream field points selected for analysis |
0053 |
| Downstream plasma points selected for analysis |
0010
|
| Downstream field points selected for analysis |
0037 |
| Minimum chisq/dof for RH8,RH9,RH10 |
2.40, 7.47, 7.59 |
Event added to database
|
Sat Apr 30 21:51:55 2005
|
Event last processed
|
Tue May 3 14:02:27 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.008 ± 0.000
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-346.7 ± 4.2 |
-471.8 ± 5.4 |
| Vy GSE [km/s] |
5.4 ± 4.5 |
12.8 ± 11.9 |
| Vz GSE [km/s] |
21.4 ± 2.7 |
7.2 ± 6.2 |
| Wi [km/s] |
19.0 ± 1.3 |
36.3 ± 1.7 |
| We [km/s] |
599.8 ± 41.6 |
1148.9 ± 53.0 |
| Ni [n/cc] |
3.8 ± 0.5 |
17.9 ± 1.2 |
| Bx GSE [nT] |
0.6 ± 0.4 |
-0.1 ± 1.1 |
| By GSE [nT] |
1.2 ± 0.3 |
12.3 ± 3.1 |
| Bz GSE [nT] |
4.4 ± 0.3 |
13.8 ± 1.1 |
Plasma Beta
|
0.132 ± 0.131
|
0.147 ± 0.142
|
Sound Speed [km/s]
|
24.49 ± 1.70
|
46.90 ± 2.16
|
Alfven Speed [km/s]
|
52.44 ± 4.03
|
96.21 ± 8.71
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.524 ± 0.485 |
0.603 ± 0.449 |
-0.602 ± 0.516 |
-37.00 ± 29.80 |
130.99 ± 41.77 |
| VC |
-0.992 ± 0.008 |
0.060 ± 0.096 |
-0.112 ± 0.112 |
-6.43 ± 2.92 |
176.55 ± 5.57 |
| MX1 |
-0.991 ± 0.014 |
0.058 ± 0.085 |
-0.117 ± 0.117 |
-6.75 ± 6.42 |
176.67 ± 4.92 |
| MX2 |
-0.990 ± 0.011 |
0.058 ± 0.085 |
-0.125 ± 0.125 |
-7.21 ± 4.52 |
176.65 ± 4.90 |
| MX3 |
-0.990 ± 0.010 |
0.057 ± 0.086 |
-0.126 ± 0.126 |
-7.25 ± 4.12 |
176.71 ± 5.00 |
| RH08 |
-0.995 ± 0.001 |
0.061 ± 0.014 |
-0.073 ± 0.072 |
-4.16 ± 0.71 |
176.49 ± 0.82 |
| RH09 |
-0.996 ± 0.007 |
0.044 ± 0.069 |
-0.084 ± 0.084 |
-4.81 ± 4.02 |
177.49 ± 3.99 |
| RH10 |
-0.996 ± 0.007 |
0.044 ± 0.069 |
-0.084 ± 0.084 |
-4.81 ± 4.02 |
177.49 ± 3.99 |
| Average |
-0.934 |
0.123 |
-0.165 |
-9.802 |
171.130 |
| Median |
-0.991 |
0.058 |
-0.112 |
-6.431 |
176.668 |
| Deviation |
0.166 |
0.194 |
0.178 |
11.054 |
16.225 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
61.0 ± 4.0 |
271.3 ± 11.9 |
5.06 ± 1.04 |
| VC |
77.6 ± 5.0 |
501.9 ± 8.8 |
5.06 ± 1.04 |
| MX1 |
77.2 ± 5.0 |
501.6 ± 8.8 |
5.06 ± 1.04 |
| MX2 |
76.8 ± 5.0 |
501.1 ± 8.8 |
5.06 ± 1.04 |
| MX3 |
76.7 ± 5.0 |
501.1 ± 8.8 |
5.06 ± 1.04 |
| RH08 |
79.8 ± 5.0 |
503.8 ± 8.9 |
5.06 ± 1.04 |
| RH09 |
78.9 ± 5.0 |
503.6 ± 8.9 |
5.06 ± 1.04 |
| RH10 |
78.9 ± 5.0 |
503.6 ± 8.9 |
5.06 ± 1.04 |
| Average |
75.8 |
473.5 |
5.06 |
| Median |
77.6 |
501.9 |
5.06 |
| Deviation |
6.1 |
81.7 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
99.4 ± 4.2 |
10.9 ± 0.7 |
25.4 ± 2.0 |
56.8 ± 4.1 |
9.12 ± 0.78 |
1.76 ± 0.17 |
| VC |
160.1 ± 4.3 |
4.8 ± 0.3 |
11.3 ± 0.9 |
57.7 ± 4.1 |
33.54 ± 2.28 |
2.79 ± 0.21 |
| MX1 |
160.2 ± 4.3 |
4.9 ± 0.3 |
11.6 ± 0.9 |
57.7 ± 4.1 |
32.68 ± 2.22 |
2.79 ± 0.21 |
| MX2 |
160.1 ± 4.3 |
5.1 ± 0.3 |
12.0 ± 0.9 |
57.7 ± 4.1 |
31.60 ± 2.14 |
2.79 ± 0.21 |
| MX3 |
160.1 ± 4.3 |
5.1 ± 0.3 |
12.0 ± 0.9 |
57.7 ± 4.1 |
31.47 ± 2.13 |
2.79 ± 0.21 |
| RH8 |
159.9 ± 4.3 |
4.0 ± 0.3 |
9.3 ± 0.7 |
57.8 ± 4.1 |
40.62 ± 2.75 |
2.78 ± 0.21 |
| RH9 |
160.0 ± 4.3 |
4.3 ± 0.3 |
10.1 ± 0.8 |
57.7 ± 4.1 |
37.43 ± 2.53 |
2.79 ± 0.21 |
| RH10 |
160.0 ± 4.3 |
4.3 ± 0.3 |
10.1 ± 0.8 |
57.7 ± 4.1 |
37.43 ± 2.53 |
2.79 ± 0.21 |
| Average |
152.5 |
5.4 |
12.7 |
57.6 |
31.7 |
2.7 |
| Median |
160.1 |
4.9 |
11.6 |
57.7 |
33.5 |
2.8 |
| Deviation |
21.5 |
2.3 |
5.2 |
0.3 |
9.7 |
0.4 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
20.8 ± 8.7 |
20.8 ± 0.7 |
46.7 ± 4.2 |
105.1 ± 7.6 |
1.01 ± 0.44 |
0.20 ± 0.09 |
| VC |
34.0 ± 5.0 |
9.1 ± 0.3 |
20.7 ± 1.9 |
106.8 ± 7.5 |
3.74 ± 0.52 |
0.32 ± 0.06 |
| MX1 |
34.0 ± 5.0 |
9.3 ± 0.3 |
21.3 ± 1.9 |
106.7 ± 7.5 |
3.64 ± 0.50 |
0.32 ± 0.06 |
| MX2 |
34.0 ± 5.0 |
9.7 ± 0.3 |
22.0 ± 2.0 |
106.7 ± 7.5 |
3.52 ± 0.49 |
0.32 ± 0.06 |
| MX3 |
34.0 ± 5.0 |
9.7 ± 0.3 |
22.1 ± 2.0 |
106.7 ± 7.5 |
3.51 ± 0.49 |
0.32 ± 0.06 |
| RH8 |
33.9 ± 5.0 |
7.5 ± 0.3 |
17.1 ± 1.5 |
106.9 ± 7.5 |
4.52 ± 0.63 |
0.32 ± 0.06 |
| RH9 |
34.0 ± 5.1 |
8.1 ± 0.3 |
18.6 ± 1.7 |
106.8 ± 7.5 |
4.17 ± 0.58 |
0.32 ± 0.06 |
| RH10 |
34.0 ± 5.1 |
8.1 ± 0.3 |
18.6 ± 1.7 |
106.8 ± 7.5 |
4.17 ± 0.58 |
0.32 ± 0.06 |
| Average |
32.3 |
10.3 |
23.4 |
106.6 |
3.5 |
0.3 |
| Median |
34.0 |
9.3 |
21.3 |
106.8 |
3.7 |
0.3 |
| Deviation |
4.7 |
4.3 |
9.6 |
0.6 |
1.1 |
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)
| 
