Database: Ace Shock Analysis
Event ID: 20013641931
Observation time: 12/30/2001 364.81353 1931 [UT]
|
|
General
Information (About, Top)
| Year |
2001 |
| Fractional day of year |
364.813530 |
| Arrival time of shock [seconds of day] |
70289.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.038 |
| Y GSE location of spacecraft [Re] |
0.002 |
| Z GSE location of spacecraft [Re] |
0.003 |
| Upstream plasma points selected for analysis |
0007 |
| Upstream field points selected for analysis |
0032 |
| Downstream plasma points selected for analysis |
0007
|
| Downstream field points selected for analysis |
0033 |
| Minimum chisq/dof for RH8,RH9,RH10 |
3.62, 5.95, 6.16 |
Event added to database
|
Sun May 1 16:04:39 2005
|
Event last processed
|
Tue May 3 14:13:50 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.006 ± 0.000
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-428.6 ± 6.1 |
-564.1 ± 13.3 |
| Vy GSE [km/s] |
1.2 ± 5.1 |
-5.3 ± 11.3 |
| Vz GSE [km/s] |
-36.4 ± 6.7 |
-17.2 ± 16.7 |
| Wi [km/s] |
56.4 ± 1.5 |
86.4 ± 1.3 |
| We [km/s] |
1784.4 ± 48.2 |
2731.2 ± 41.7 |
| Ni [n/cc] |
6.2 ± 0.4 |
15.2 ± 1.8 |
| Bx GSE [nT] |
3.7 ± 1.5 |
3.7 ± 2.6 |
| By GSE [nT] |
-8.9 ± 1.6 |
-22.5 ± 3.2 |
| Bz GSE [nT] |
5.1 ± 0.6 |
12.4 ± 3.7 |
Plasma Beta
|
0.338 ± 0.325
|
0.344 ± 0.329
|
Sound Speed [km/s]
|
72.85 ± 1.97
|
111.50 ± 1.70
|
Alfven Speed [km/s]
|
97.59 ± 7.90
|
148.34 ± 10.74
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.982 ± 0.103 |
0.067 ± 0.664 |
-0.175 ± 0.173 |
-10.05 ± 30.39 |
176.10 ± 38.71 |
| VC |
-0.988 ± 0.019 |
-0.042 ± 0.086 |
0.146 ± 0.145 |
8.38 ± 7.51 |
182.41 ± 4.97 |
| MX1 |
-0.995 ± 0.015 |
0.072 ± 0.134 |
0.068 ± 0.067 |
3.87 ± 9.83 |
175.89 ± 7.74 |
| MX2 |
-0.993 ± 0.017 |
0.077 ± 0.133 |
0.093 ± 0.093 |
5.34 ± 8.31 |
175.59 ± 7.69 |
| MX3 |
-0.991 ± 0.018 |
0.079 ± 0.132 |
0.107 ± 0.106 |
6.13 ± 7.66 |
175.42 ± 7.65 |
| RH08 |
-0.993 ± 0.002 |
0.096 ± 0.018 |
0.061 ± 0.061 |
3.52 ± 0.99 |
174.48 ± 1.05 |
| RH09 |
-0.993 ± 0.008 |
0.096 ± 0.068 |
0.061 ± 0.061 |
3.52 ± 4.03 |
174.48 ± 3.95 |
| RH10 |
-0.993 ± 0.008 |
0.096 ± 0.068 |
0.061 ± 0.061 |
3.52 ± 4.03 |
174.48 ± 3.95 |
| Average |
-0.991 |
0.068 |
0.053 |
3.030 |
176.107 |
| Median |
-0.993 |
0.079 |
0.068 |
3.873 |
175.588 |
| Deviation |
0.004 |
0.046 |
0.097 |
5.556 |
2.629 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
61.5 ± 10.8 |
651.6 ± 22.3 |
2.48 ± 0.37 |
| VC |
76.0 ± 9.9 |
653.4 ± 21.8 |
2.48 ± 0.37 |
| MX1 |
68.2 ± 9.9 |
657.5 ± 21.2 |
2.48 ± 0.37 |
| MX2 |
68.7 ± 9.7 |
655.1 ± 21.1 |
2.48 ± 0.37 |
| MX3 |
69.0 ± 9.7 |
653.6 ± 21.1 |
2.48 ± 0.37 |
| RH08 |
66.9 ± 9.8 |
656.0 ± 21.0 |
2.48 ± 0.37 |
| RH09 |
66.9 ± 9.8 |
656.0 ± 21.0 |
2.48 ± 0.37 |
| RH10 |
66.9 ± 9.8 |
656.0 ± 21.0 |
2.48 ± 0.37 |
| Average |
68.0 |
654.9 |
2.48 |
| Median |
68.2 |
656.0 |
2.48 |
| Deviation |
4.0 |
1.9 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
224.0 ± 6.1 |
28.6 ± 1.3 |
46.5 ± 3.8 |
118.4 ± 7.2 |
7.84 ± 0.35 |
1.90 ± 0.11 |
| VC |
235.0 ± 6.1 |
14.2 ± 0.6 |
23.5 ± 1.9 |
121.0 ± 7.3 |
16.63 ± 0.75 |
1.95 ± 0.11 |
| MX1 |
233.3 ± 5.9 |
22.0 ± 1.0 |
36.2 ± 2.9 |
119.8 ± 7.2 |
10.62 ± 0.46 |
1.95 ± 0.11 |
| MX2 |
232.8 ± 5.8 |
21.5 ± 1.0 |
35.4 ± 2.9 |
119.9 ± 7.2 |
10.86 ± 0.47 |
1.95 ± 0.11 |
| MX3 |
232.5 ± 5.8 |
21.2 ± 0.9 |
34.9 ± 2.8 |
120.0 ± 7.2 |
10.99 ± 0.47 |
1.94 ± 0.11 |
| RH8 |
232.3 ± 5.8 |
23.4 ± 1.0 |
38.4 ± 3.1 |
119.6 ± 7.2 |
9.96 ± 0.42 |
1.95 ± 0.11 |
| RH9 |
232.3 ± 5.8 |
23.4 ± 1.0 |
38.4 ± 3.1 |
119.6 ± 7.2 |
9.96 ± 0.42 |
1.95 ± 0.11 |
| RH10 |
232.3 ± 5.8 |
23.4 ± 1.0 |
38.4 ± 3.1 |
119.6 ± 7.2 |
9.96 ± 0.42 |
1.95 ± 0.11 |
| Average |
231.8 |
22.2 |
36.5 |
119.7 |
10.9 |
1.9 |
| Median |
232.5 |
23.4 |
38.4 |
119.8 |
10.6 |
1.9 |
| Deviation |
3.3 |
4.0 |
6.4 |
0.7 |
2.5 |
0.0 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
94.8 ± 14.6 |
43.7 ± 1.1 |
70.7 ± 5.1 |
180.5 ± 8.6 |
2.17 ± 0.34 |
0.53 ± 0.08 |
| VC |
98.1 ± 12.0 |
21.6 ± 0.6 |
35.8 ± 2.6 |
184.4 ± 8.6 |
4.54 ± 0.56 |
0.53 ± 0.06 |
| MX1 |
97.7 ± 12.0 |
33.6 ± 0.9 |
55.1 ± 4.0 |
182.6 ± 8.6 |
2.91 ± 0.36 |
0.54 ± 0.07 |
| MX2 |
97.1 ± 11.7 |
32.8 ± 0.9 |
53.8 ± 3.9 |
182.8 ± 8.6 |
2.96 ± 0.36 |
0.53 ± 0.06 |
| MX3 |
96.8 ± 11.5 |
32.3 ± 0.8 |
53.1 ± 3.8 |
182.8 ± 8.6 |
2.99 ± 0.36 |
0.53 ± 0.06 |
| RH8 |
97.2 ± 11.8 |
35.6 ± 0.9 |
58.3 ± 4.2 |
182.2 ± 8.6 |
2.73 ± 0.34 |
0.53 ± 0.06 |
| RH9 |
97.2 ± 11.8 |
35.6 ± 0.9 |
58.3 ± 4.2 |
182.2 ± 8.6 |
2.73 ± 0.34 |
0.53 ± 0.06 |
| RH10 |
97.2 ± 11.8 |
35.6 ± 0.9 |
58.3 ± 4.2 |
182.2 ± 8.6 |
2.73 ± 0.34 |
0.53 ± 0.06 |
| Average |
97.0 |
33.9 |
55.4 |
182.5 |
3.0 |
0.5 |
| Median |
97.2 |
35.6 |
58.3 |
182.6 |
2.9 |
0.5 |
| Deviation |
1.0 |
6.1 |
9.7 |
1.1 |
0.7 |
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)
| 
