Database: Ace Shock Analysis
Event ID: 20012760806
Observation time: 10/03/2001 276.33809 0806 [UT]
|
|
General
Information (About, Top)
| Year |
2001 |
| Fractional day of year |
276.338090 |
| Arrival time of shock [seconds of day] |
29211.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.035 |
| Y GSE location of spacecraft [Re] |
-0.002 |
| Z GSE location of spacecraft [Re] |
-0.003 |
| Upstream plasma points selected for analysis |
0009 |
| Upstream field points selected for analysis |
0036 |
| Downstream plasma points selected for analysis |
0008
|
| Downstream field points selected for analysis |
0031 |
| Minimum chisq/dof for RH8,RH9,RH10 |
28.04, 346.59, 352.42 |
Event added to database
|
Sat Apr 30 21:52:25 2005
|
Event last processed
|
Tue May 3 14:06:27 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.007 ± 0.000
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-494.2 ± 4.1 |
-515.6 ± 3.3 |
| Vy GSE [km/s] |
-1.1 ± 6.3 |
29.1 ± 3.2 |
| Vz GSE [km/s] |
18.2 ± 2.2 |
18.6 ± 2.1 |
| Wi [km/s] |
21.2 ± 1.2 |
26.6 ± 1.0 |
| We [km/s] |
670.1 ± 36.6 |
842.4 ± 31.4 |
| Ni [n/cc] |
4.9 ± 0.9 |
11.0 ± 0.4 |
| Bx GSE [nT] |
-3.8 ± 0.3 |
-3.7 ± 0.2 |
| By GSE [nT] |
-5.8 ± 0.1 |
5.3 ± 0.4 |
| Bz GSE [nT] |
-13.6 ± 0.1 |
-19.6 ± 0.2 |
Plasma Beta
|
0.020 ± 0.019
|
0.038 ± 0.040
|
Sound Speed [km/s]
|
27.36 ± 1.49
|
34.39 ± 1.28
|
Alfven Speed [km/s]
|
151.69 ± 12.11
|
136.23 ± 3.55
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.252 ± 0.016 |
-0.459 ± 0.012 |
-0.852 ± 0.534 |
-58.44 ± 0.60 |
241.24 ± 1.98 |
| VC |
-0.586 ± 0.150 |
0.810 ± 0.109 |
0.017 ± 0.017 |
0.96 ± 4.65 |
125.90 ± 10.64 |
| MX1 |
-0.227 ± 0.271 |
-0.499 ± 0.287 |
-0.837 ± 0.543 |
-56.78 ± 19.95 |
245.52 ± 27.90 |
| MX2 |
-0.338 ± 0.136 |
0.478 ± 0.119 |
0.811 ± 0.553 |
54.18 ± 7.02 |
125.24 ± 14.79 |
| MX3 |
-0.815 ± 0.074 |
0.292 ± 0.086 |
0.500 ± 0.453 |
29.99 ± 8.20 |
160.28 ± 5.81 |
| RH08 |
-0.939 ± 0.012 |
0.192 ± 0.033 |
0.285 ± 0.277 |
16.55 ± 2.00 |
168.47 ± 2.00 |
| RH09 |
-0.939 ± 0.024 |
0.209 ± 0.069 |
0.274 ± 0.267 |
15.89 ± 4.01 |
167.47 ± 4.20 |
| RH10 |
-0.939 ± 0.024 |
0.209 ± 0.069 |
0.274 ± 0.267 |
15.89 ± 4.01 |
167.47 ± 4.20 |
| Average |
-0.629 |
0.154 |
0.059 |
2.280 |
175.197 |
| Median |
-0.586 |
0.209 |
0.274 |
15.887 |
167.465 |
| Deviation |
0.319 |
0.441 |
0.602 |
40.021 |
45.700 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
5.1 ± 0.5 |
93.1 ± 3.8 |
2.37 ± 0.34 |
| VC |
79.8 ± 0.5 |
356.6 ± 11.5 |
2.37 ± 0.34 |
| MX1 |
7.6 ± 0.4 |
78.2 ± 3.8 |
2.37 ± 0.34 |
| MX2 |
35.0 ± 0.9 |
220.2 ± 8.0 |
2.37 ± 0.34 |
| MX3 |
69.4 ± 1.0 |
458.6 ± 12.1 |
2.37 ± 0.34 |
| RH08 |
84.7 ± 1.0 |
516.5 ± 12.8 |
2.37 ± 0.34 |
| RH09 |
84.9 ± 1.0 |
516.9 ± 12.9 |
2.37 ± 0.34 |
| RH10 |
84.9 ± 1.0 |
516.9 ± 12.9 |
2.37 ± 0.34 |
| Average |
56.4 |
344.6 |
2.37 |
| Median |
79.8 |
458.6 |
2.37 |
| Deviation |
35.1 |
189.6 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
-16.3 ± 2.6 |
27.2 ± 1.5 |
151.1 ± 12.1 |
151.7 ± 12.1 |
-0.60 ± 0.10 |
-0.11 ± 0.01 |
| VC |
67.4 ± 3.8 |
4.8 ± 0.2 |
26.8 ± 2.1 |
154.1 ± 11.9 |
14.23 ± 1.15 |
0.44 ± 0.02 |
| MX1 |
-19.3 ± 2.7 |
27.1 ± 1.5 |
150.4 ± 12.0 |
151.7 ± 12.1 |
-0.72 ± 0.11 |
-0.13 ± 0.01 |
| MX2 |
39.1 ± 1.7 |
22.3 ± 1.2 |
124.3 ± 9.9 |
152.5 ± 12.0 |
1.76 ± 0.12 |
0.26 ± 0.02 |
| MX3 |
46.9 ± 2.9 |
9.5 ± 0.5 |
53.4 ± 4.3 |
153.9 ± 11.9 |
4.95 ± 0.39 |
0.31 ± 0.04 |
| RH8 |
47.4 ± 3.4 |
2.5 ± 0.1 |
13.9 ± 1.1 |
154.1 ± 11.9 |
19.27 ± 1.69 |
0.31 ± 0.04 |
| RH9 |
48.2 ± 3.4 |
2.4 ± 0.1 |
13.4 ± 1.1 |
154.1 ± 11.9 |
20.32 ± 1.74 |
0.32 ± 0.04 |
| RH10 |
48.2 ± 3.4 |
2.4 ± 0.1 |
13.4 ± 1.1 |
154.1 ± 11.9 |
20.32 ± 1.74 |
0.32 ± 0.04 |
| Average |
32.7 |
12.3 |
68.3 |
153.3 |
9.9 |
0.2 |
| Median |
47.4 |
9.5 |
53.4 |
154.1 |
14.2 |
0.3 |
| Deviation |
32.2 |
11.3 |
62.9 |
1.1 |
9.5 |
0.2 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
-7.5 ± 2.1 |
34.2 ± 1.3 |
135.7 ± 3.5 |
136.3 ± 3.5 |
-0.22 ± 0.07 |
-0.05 ± 0.02 |
| VC |
30.4 ± 4.2 |
5.9 ± 0.2 |
24.0 ± 0.6 |
140.4 ± 3.4 |
5.17 ± 0.75 |
0.22 ± 0.03 |
| MX1 |
-8.8 ± 2.1 |
34.1 ± 1.3 |
135.0 ± 3.5 |
136.3 ± 3.5 |
-0.26 ± 0.07 |
-0.06 ± 0.02 |
| MX2 |
17.1 ± 2.5 |
27.9 ± 1.0 |
111.6 ± 2.9 |
137.7 ± 3.5 |
0.62 ± 0.11 |
0.12 ± 0.02 |
| MX3 |
20.3 ± 3.2 |
11.8 ± 0.4 |
48.0 ± 1.3 |
140.0 ± 3.4 |
1.73 ± 0.29 |
0.15 ± 0.03 |
| RH8 |
21.4 ± 3.4 |
3.1 ± 0.1 |
12.5 ± 0.3 |
140.5 ± 3.4 |
7.01 ± 1.15 |
0.15 ± 0.03 |
| RH9 |
21.6 ± 3.4 |
2.9 ± 0.1 |
12.0 ± 0.3 |
140.5 ± 3.4 |
7.36 ± 1.21 |
0.15 ± 0.03 |
| RH10 |
21.6 ± 3.4 |
2.9 ± 0.1 |
12.0 ± 0.3 |
140.5 ± 3.4 |
7.36 ± 1.21 |
0.15 ± 0.03 |
| Average |
14.5 |
15.4 |
61.4 |
139.0 |
3.6 |
0.1 |
| Median |
21.4 |
11.8 |
48.0 |
140.4 |
5.2 |
0.2 |
| Deviation |
14.5 |
14.3 |
56.4 |
1.9 |
3.5 |
0.1 |
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)
| 
