Database: Ace Shock Analysis
Event ID: 20012841619
Observation time: 10/11/2001 284.68049 1619 [UT]
|
|
General
Information (About, Top)
| Year |
2001 |
| Fractional day of year |
284.680486 |
| Arrival time of shock [seconds of day] |
58794.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.035 |
| Y GSE location of spacecraft [Re] |
-0.000 |
| Z GSE location of spacecraft [Re] |
-0.003 |
| Upstream plasma points selected for analysis |
0011 |
| Upstream field points selected for analysis |
0043 |
| Downstream plasma points selected for analysis |
0009
|
| Downstream field points selected for analysis |
0039 |
| Minimum chisq/dof for RH8,RH9,RH10 |
4.72, 13.03, 13.54 |
Event added to database
|
Sat Apr 30 21:52:42 2005
|
Event last processed
|
Tue May 3 14:07:16 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] |
-371.8 ± 5.8 |
-501.0 ± 6.2 |
| Vy GSE [km/s] |
-49.9 ± 4.3 |
-79.6 ± 6.2 |
| Vz GSE [km/s] |
3.9 ± 11.2 |
2.5 ± 10.5 |
| Wi [km/s] |
23.7 ± 3.5 |
49.1 ± 4.8 |
| We [km/s] |
749.0 ± 109.6 |
1553.9 ± 150.7 |
| Ni [n/cc] |
8.0 ± 2.2 |
26.0 ± 5.1 |
| Bx GSE [nT] |
-4.8 ± 0.7 |
-5.9 ± 0.6 |
| By GSE [nT] |
7.6 ± 0.5 |
21.4 ± 1.3 |
| Bz GSE [nT] |
0.0 ± 1.0 |
2.5 ± 2.4 |
Plasma Beta
|
0.119 ± 0.091
|
0.260 ± 0.255
|
Sound Speed [km/s]
|
30.58 ± 4.47
|
63.44 ± 6.15
|
Alfven Speed [km/s]
|
72.06 ± 10.80
|
97.26 ± 9.57
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.945 ± 0.130 |
0.085 ± 0.199 |
-0.315 ± 0.304 |
-18.37 ± 23.44 |
174.89 ± 12.03 |
| VC |
-0.975 ± 0.011 |
-0.224 ± 0.048 |
-0.013 ± 0.013 |
-0.76 ± 6.26 |
192.94 ± 2.85 |
| MX1 |
-0.998 ± 0.004 |
-0.065 ± 0.060 |
-0.009 ± 0.009 |
-0.51 ± 6.41 |
183.74 ± 3.45 |
| MX2 |
-0.997 ± 0.004 |
-0.072 ± 0.058 |
0.003 ± 0.003 |
0.19 ± 5.97 |
184.10 ± 3.31 |
| MX3 |
-0.997 ± 0.004 |
-0.075 ± 0.057 |
0.010 ± 0.010 |
0.60 ± 5.86 |
184.30 ± 3.28 |
| RH08 |
-0.994 ± 0.001 |
-0.114 ± 0.009 |
-0.006 ± 0.006 |
-0.32 ± 0.71 |
186.52 ± 0.54 |
| RH09 |
-0.995 ± 0.007 |
-0.096 ± 0.068 |
-0.039 ± 0.039 |
-2.24 ± 4.06 |
185.52 ± 3.91 |
| RH10 |
-0.995 ± 0.007 |
-0.096 ± 0.068 |
-0.039 ± 0.039 |
-2.24 ± 4.06 |
185.52 ± 3.91 |
| Average |
-0.987 |
-0.082 |
-0.051 |
-2.956 |
184.691 |
| Median |
-0.995 |
-0.075 |
-0.009 |
-0.508 |
185.515 |
| Deviation |
0.018 |
0.084 |
0.108 |
6.311 |
4.933 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
55.0 ± 3.5 |
518.5 ± 32.7 |
3.65 ± 1.83 |
| VC |
70.6 ± 5.4 |
564.6 ± 35.2 |
3.65 ± 1.83 |
| MX1 |
61.5 ± 5.4 |
561.2 ± 35.4 |
3.65 ± 1.83 |
| MX2 |
61.9 ± 5.4 |
561.2 ± 35.5 |
3.65 ± 1.83 |
| MX3 |
62.1 ± 5.5 |
561.4 ± 35.5 |
3.65 ± 1.83 |
| RH08 |
64.3 ± 5.4 |
563.3 ± 35.5 |
3.65 ± 1.83 |
| RH09 |
63.3 ± 5.2 |
563.0 ± 35.4 |
3.65 ± 1.83 |
| RH10 |
63.3 ± 5.2 |
563.0 ± 35.4 |
3.65 ± 1.83 |
| Average |
62.7 |
557.0 |
3.65 |
| Median |
63.3 |
563.0 |
3.65 |
| Deviation |
4.3 |
15.6 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
172.5 ± 3.3 |
16.4 ± 2.0 |
41.3 ± 6.2 |
76.7 ± 10.0 |
10.68 ± 1.30 |
2.28 ± 0.28 |
| VC |
191.2 ± 6.1 |
9.3 ± 1.1 |
23.9 ± 3.6 |
77.9 ± 9.9 |
20.80 ± 2.69 |
2.49 ± 0.31 |
| MX1 |
187.0 ± 5.9 |
13.5 ± 1.7 |
34.4 ± 5.2 |
77.3 ± 9.9 |
14.03 ± 1.86 |
2.45 ± 0.32 |
| MX2 |
186.8 ± 6.0 |
13.4 ± 1.6 |
34.0 ± 5.1 |
77.3 ± 9.9 |
14.18 ± 1.89 |
2.45 ± 0.32 |
| MX3 |
186.9 ± 6.0 |
13.3 ± 1.6 |
33.8 ± 5.1 |
77.4 ± 9.9 |
14.28 ± 1.90 |
2.45 ± 0.32 |
| RH8 |
188.3 ± 6.0 |
12.3 ± 1.5 |
31.3 ± 4.7 |
77.5 ± 9.9 |
15.56 ± 2.05 |
2.46 ± 0.32 |
| RH9 |
188.5 ± 5.7 |
12.7 ± 1.6 |
32.4 ± 4.9 |
77.5 ± 9.9 |
15.04 ± 1.96 |
2.47 ± 0.32 |
| RH10 |
188.5 ± 5.7 |
12.7 ± 1.6 |
32.4 ± 4.9 |
77.5 ± 9.9 |
15.04 ± 1.96 |
2.47 ± 0.32 |
| Average |
186.2 |
12.9 |
32.9 |
77.4 |
15.0 |
2.4 |
| Median |
188.3 |
13.3 |
33.8 |
77.5 |
15.0 |
2.5 |
| Deviation |
5.7 |
1.9 |
4.8 |
0.3 |
2.8 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
52.5 ± 5.8 |
31.6 ± 2.8 |
55.7 ± 5.5 |
111.8 ± 9.8 |
1.67 ± 0.20 |
0.47 ± 0.07 |
| VC |
58.6 ± 6.4 |
17.8 ± 1.6 |
32.2 ± 3.2 |
114.9 ± 10.0 |
3.32 ± 0.42 |
0.51 ± 0.07 |
| MX1 |
56.2 ± 6.2 |
25.9 ± 2.3 |
46.4 ± 4.6 |
113.3 ± 9.9 |
2.18 ± 0.30 |
0.50 ± 0.08 |
| MX2 |
55.9 ± 6.3 |
25.6 ± 2.3 |
45.9 ± 4.5 |
113.4 ± 9.9 |
2.19 ± 0.30 |
0.50 ± 0.08 |
| MX3 |
55.9 ± 6.3 |
25.5 ± 2.3 |
45.6 ± 4.5 |
113.4 ± 9.9 |
2.21 ± 0.30 |
0.50 ± 0.08 |
| RH8 |
56.6 ± 6.3 |
23.5 ± 2.1 |
42.2 ± 4.2 |
113.8 ± 10.0 |
2.42 ± 0.32 |
0.50 ± 0.07 |
| RH9 |
57.2 ± 6.2 |
24.4 ± 2.2 |
43.7 ± 4.3 |
113.6 ± 9.9 |
2.36 ± 0.31 |
0.51 ± 0.07 |
| RH10 |
57.2 ± 6.2 |
24.4 ± 2.2 |
43.7 ± 4.3 |
113.6 ± 9.9 |
2.36 ± 0.31 |
0.51 ± 0.07 |
| Average |
56.2 |
24.8 |
44.4 |
113.5 |
2.3 |
0.5 |
| Median |
56.6 |
25.5 |
45.6 |
113.6 |
2.4 |
0.5 |
| Deviation |
1.8 |
3.8 |
6.4 |
0.8 |
0.5 |
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)
| 
