Database: Ace Shock Analysis
Event ID: 20010101519
Observation time: 01/10/2001 10.63867 1519 [UT]
|
|
General
Information (About, Top)
| Year |
2001 |
| Fractional day of year |
10.638669 |
| Arrival time of shock [seconds of day] |
55181.0 ± 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 |
0012 |
| Upstream field points selected for analysis |
0050 |
| Downstream plasma points selected for analysis |
0011
|
| Downstream field points selected for analysis |
0051 |
| Minimum chisq/dof for RH8,RH9,RH10 |
4.88, 18.63, 18.80 |
Event added to database
|
Sat Apr 30 21:48:44 2005
|
Event last processed
|
Tue May 3 13:45:42 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.010 ± 0.000
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-346.0 ± 2.2 |
-381.7 ± 5.1 |
| Vy GSE [km/s] |
-15.7 ± 1.5 |
-21.7 ± 2.4 |
| Vz GSE [km/s] |
-33.2 ± 1.3 |
-36.0 ± 2.3 |
| Wi [km/s] |
29.1 ± 1.1 |
34.8 ± 2.4 |
| We [km/s] |
918.7 ± 35.5 |
1101.3 ± 76.2 |
| Ni [n/cc] |
5.2 ± 0.3 |
15.3 ± 1.0 |
| Bx GSE [nT] |
1.7 ± 0.3 |
2.1 ± 1.0 |
| By GSE [nT] |
-0.2 ± 0.4 |
-1.1 ± 0.6 |
| Bz GSE [nT] |
-3.2 ± 0.2 |
-6.0 ± 0.6 |
Plasma Beta
|
0.673 ± 0.663
|
0.935 ± 0.829
|
Sound Speed [km/s]
|
37.50 ± 1.45
|
44.96 ± 3.11
|
Alfven Speed [km/s]
|
35.51 ± 1.09
|
36.67 ± 2.98
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.979 ± 0.162 |
-0.189 ± 0.828 |
0.074 ± 0.074 |
4.25 ± 21.46 |
190.92 ± 48.47 |
| VC |
-0.982 ± 0.015 |
-0.169 ± 0.080 |
-0.082 ± 0.082 |
-4.70 ± 4.26 |
189.78 ± 4.66 |
| MX1 |
-0.979 ± 0.039 |
-0.171 ± 0.107 |
-0.108 ± 0.108 |
-6.23 ± 18.15 |
189.91 ± 6.23 |
| MX2 |
-0.979 ± 0.038 |
-0.176 ± 0.130 |
-0.104 ± 0.104 |
-5.98 ± 16.90 |
190.17 ± 7.63 |
| MX3 |
-0.978 ± 0.040 |
-0.183 ± 0.163 |
-0.097 ± 0.097 |
-5.59 ± 15.81 |
190.60 ± 9.51 |
| RH08 |
-0.998 ± 0.001 |
-0.026 ± 0.010 |
-0.050 ± 0.050 |
-2.88 ± 0.57 |
181.50 ± 0.55 |
| RH09 |
-0.998 ± 0.004 |
-0.061 ± 0.069 |
-0.006 ± 0.006 |
-0.32 ± 4.05 |
183.51 ± 3.94 |
| RH10 |
-0.998 ± 0.004 |
-0.061 ± 0.069 |
-0.006 ± 0.006 |
-0.32 ± 4.05 |
183.51 ± 3.94 |
| Average |
-0.987 |
-0.130 |
-0.047 |
-2.722 |
187.487 |
| Median |
-0.979 |
-0.169 |
-0.050 |
-2.882 |
189.906 |
| Deviation |
0.010 |
0.067 |
0.064 |
3.687 |
3.913 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
59.1 ± 3.6 |
392.5 ± 6.6 |
2.96 ± 0.33 |
| VC |
67.7 ± 3.9 |
399.2 ± 6.5 |
2.96 ± 0.33 |
| MX1 |
69.2 ± 3.9 |
399.2 ± 6.4 |
2.96 ± 0.33 |
| MX2 |
69.0 ± 3.8 |
399.0 ± 6.4 |
2.96 ± 0.33 |
| MX3 |
68.7 ± 3.8 |
398.6 ± 6.4 |
2.96 ± 0.33 |
| RH08 |
65.0 ± 4.5 |
401.2 ± 6.5 |
2.96 ± 0.33 |
| RH09 |
62.7 ± 4.3 |
400.3 ± 6.6 |
2.96 ± 0.33 |
| RH10 |
62.7 ± 4.3 |
400.3 ± 6.6 |
2.96 ± 0.33 |
| Average |
65.5 |
398.8 |
2.96 |
| Median |
67.7 |
399.2 |
2.96 |
| Deviation |
3.8 |
2.7 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
53.2 ± 2.0 |
13.7 ± 0.3 |
18.2 ± 0.6 |
49.8 ± 1.1 |
3.88 ± 0.11 |
1.07 ± 0.03 |
| VC |
53.9 ± 2.0 |
10.0 ± 0.2 |
13.5 ± 0.4 |
50.7 ± 1.1 |
5.41 ± 0.14 |
1.06 ± 0.02 |
| MX1 |
54.0 ± 2.0 |
9.3 ± 0.2 |
12.6 ± 0.4 |
50.8 ± 1.1 |
5.81 ± 0.15 |
1.06 ± 0.02 |
| MX2 |
54.0 ± 2.0 |
9.4 ± 0.2 |
12.7 ± 0.4 |
50.8 ± 1.1 |
5.75 ± 0.15 |
1.06 ± 0.02 |
| MX3 |
54.0 ± 2.0 |
9.5 ± 0.2 |
12.9 ± 0.4 |
50.8 ± 1.1 |
5.67 ± 0.15 |
1.06 ± 0.02 |
| RH8 |
53.6 ± 2.1 |
11.1 ± 0.2 |
15.0 ± 0.5 |
50.5 ± 1.1 |
4.82 ± 0.14 |
1.06 ± 0.03 |
| RH9 |
53.8 ± 2.1 |
12.2 ± 0.3 |
16.3 ± 0.5 |
50.2 ± 1.1 |
4.42 ± 0.12 |
1.07 ± 0.03 |
| RH10 |
53.8 ± 2.1 |
12.2 ± 0.3 |
16.3 ± 0.5 |
50.2 ± 1.1 |
4.42 ± 0.12 |
1.07 ± 0.03 |
| Average |
53.8 |
10.9 |
14.7 |
50.5 |
5.0 |
1.1 |
| Median |
53.9 |
11.1 |
15.0 |
50.7 |
5.4 |
1.1 |
| Deviation |
0.3 |
1.6 |
2.1 |
0.4 |
0.7 |
0.0 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
17.3 ± 5.2 |
15.0 ± 0.7 |
18.8 ± 1.5 |
56.1 ± 2.1 |
1.15 ± 0.33 |
0.31 ± 0.09 |
| VC |
17.6 ± 5.0 |
10.9 ± 0.5 |
13.9 ± 1.1 |
57.1 ± 2.1 |
1.61 ± 0.44 |
0.31 ± 0.08 |
| MX1 |
17.7 ± 5.0 |
10.2 ± 0.5 |
13.0 ± 1.1 |
57.2 ± 2.1 |
1.73 ± 0.46 |
0.31 ± 0.08 |
| MX2 |
17.7 ± 5.0 |
10.3 ± 0.5 |
13.1 ± 1.1 |
57.2 ± 2.1 |
1.72 ± 0.46 |
0.31 ± 0.08 |
| MX3 |
17.7 ± 5.0 |
10.4 ± 0.5 |
13.3 ± 1.1 |
57.2 ± 2.1 |
1.69 ± 0.45 |
0.31 ± 0.08 |
| RH8 |
17.7 ± 5.0 |
12.2 ± 0.6 |
15.5 ± 1.3 |
56.8 ± 2.1 |
1.45 ± 0.39 |
0.31 ± 0.08 |
| RH9 |
17.8 ± 5.1 |
13.3 ± 0.6 |
16.8 ± 1.4 |
56.6 ± 2.1 |
1.33 ± 0.36 |
0.31 ± 0.09 |
| RH10 |
17.8 ± 5.1 |
13.3 ± 0.6 |
16.8 ± 1.4 |
56.6 ± 2.1 |
1.33 ± 0.36 |
0.31 ± 0.09 |
| Average |
17.7 |
12.0 |
15.2 |
56.9 |
1.5 |
0.3 |
| Median |
17.7 |
12.2 |
15.5 |
57.1 |
1.6 |
0.3 |
| Deviation |
0.2 |
1.8 |
2.2 |
0.4 |
0.2 |
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)
| 
