Database: Ace Shock Analysis
Event ID: 20010892151
Observation time: 03/30/2001 89.91096 2151 [UT]
|
|
General
Information (About, Top)
| Year |
2001 |
| Fractional day of year |
89.910961 |
| Arrival time of shock [seconds of day] |
78707.0 ± 25.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.035 |
| Y GSE location of spacecraft [Re] |
-0.004 |
| Z GSE location of spacecraft [Re] |
-0.002 |
| Upstream plasma points selected for analysis |
0009 |
| Upstream field points selected for analysis |
0040 |
| Downstream plasma points selected for analysis |
0008
|
| Downstream field points selected for analysis |
0034 |
| Minimum chisq/dof for RH8,RH9,RH10 |
9.10, 54.13, 55.15 |
Event added to database
|
Sat Apr 30 21:50:08 2005
|
Event last processed
|
Tue May 3 13:52:05 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.009 ± 0.001
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-415.5 ± 0.9 |
-431.4 ± 1.0 |
| Vy GSE [km/s] |
-12.7 ± 0.9 |
-30.2 ± 1.7 |
| Vz GSE [km/s] |
20.5 ± 1.0 |
4.5 ± 2.2 |
| Wi [km/s] |
21.4 ± 0.7 |
30.9 ± 1.0 |
| We [km/s] |
675.6 ± 21.6 |
978.6 ± 30.8 |
| Ni [n/cc] |
14.0 ± 0.5 |
33.5 ± 3.8 |
| Bx GSE [nT] |
-1.4 ± 0.4 |
-3.3 ± 1.0 |
| By GSE [nT] |
-1.9 ± 0.2 |
1.7 ± 0.7 |
| Bz GSE [nT] |
0.5 ± 0.5 |
-5.4 ± 0.3 |
Plasma Beta
|
2.252 ± 2.177
|
1.528 ± 1.481
|
Sound Speed [km/s]
|
27.58 ± 0.88
|
39.95 ± 1.26
|
Alfven Speed [km/s]
|
14.30 ± 0.93
|
25.41 ± 2.70
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.742 ± 0.105 |
-0.655 ± 0.119 |
-0.144 ± 0.143 |
-8.28 ± 6.94 |
221.41 ± 9.15 |
| VC |
-0.561 ± 0.057 |
-0.612 ± 0.055 |
-0.558 ± 0.491 |
-33.88 ± 4.37 |
227.51 ± 4.56 |
| MX1 |
-0.615 ± 0.070 |
-0.750 ± 0.059 |
-0.242 ± 0.237 |
-14.02 ± 6.16 |
230.63 ± 5.21 |
| MX2 |
-0.464 ± 0.092 |
-0.818 ± 0.054 |
-0.339 ± 0.326 |
-19.83 ± 2.73 |
240.47 ± 6.43 |
| MX3 |
-0.500 ± 0.073 |
-0.805 ± 0.048 |
-0.319 ± 0.307 |
-18.58 ± 3.31 |
238.16 ± 5.16 |
| RH08 |
-0.860 ± 0.006 |
0.256 ± 0.017 |
0.441 ± 0.410 |
26.19 ± 0.54 |
163.45 ± 1.12 |
| RH09 |
-0.950 ± 0.022 |
-0.211 ± 0.069 |
-0.229 ± 0.225 |
-13.24 ± 3.97 |
192.53 ± 4.17 |
| RH10 |
-0.950 ± 0.022 |
-0.211 ± 0.069 |
-0.229 ± 0.225 |
-13.24 ± 3.97 |
192.53 ± 4.17 |
| Average |
-0.705 |
-0.476 |
-0.202 |
-11.861 |
213.339 |
| Median |
-0.615 |
-0.612 |
-0.229 |
-13.241 |
227.514 |
| Deviation |
0.198 |
0.383 |
0.288 |
17.166 |
27.442 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
25.5 ± 10.9 |
357.1 ± 4.5 |
2.41 ± 0.32 |
| VC |
46.8 ± 11.3 |
278.5 ± 3.8 |
2.41 ± 0.32 |
| MX1 |
27.6 ± 11.4 |
305.8 ± 4.5 |
2.41 ± 0.32 |
| MX2 |
33.8 ± 10.3 |
242.4 ± 4.3 |
2.41 ± 0.32 |
| MX3 |
32.2 ± 10.6 |
257.7 ± 4.4 |
2.41 ± 0.32 |
| RH08 |
67.7 ± 10.4 |
366.6 ± 2.3 |
2.41 ± 0.32 |
| RH09 |
48.7 ± 11.4 |
431.2 ± 3.6 |
2.41 ± 0.32 |
| RH10 |
48.7 ± 11.4 |
431.2 ± 3.6 |
2.41 ± 0.32 |
| Average |
41.4 |
333.8 |
2.41 |
| Median |
46.8 |
357.1 |
2.41 |
| Deviation |
14.2 |
74.2 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
43.4 ± 0.5 |
12.5 ± 0.8 |
12.9 ± 0.8 |
28.4 ± 0.9 |
3.48 ± 0.22 |
1.53 ± 0.06 |
| VC |
49.2 ± 0.6 |
9.1 ± 0.5 |
9.8 ± 0.6 |
29.7 ± 1.0 |
5.43 ± 0.33 |
1.66 ± 0.07 |
| MX1 |
45.6 ± 0.4 |
12.2 ± 0.7 |
12.7 ± 0.8 |
28.6 ± 0.9 |
3.74 ± 0.22 |
1.60 ± 0.06 |
| MX2 |
46.3 ± 0.4 |
11.3 ± 0.7 |
11.9 ± 0.8 |
28.9 ± 0.9 |
4.10 ± 0.23 |
1.60 ± 0.06 |
| MX3 |
46.3 ± 0.4 |
11.6 ± 0.7 |
12.1 ± 0.8 |
28.8 ± 0.9 |
4.01 ± 0.23 |
1.61 ± 0.06 |
| RH8 |
3.4 ± 0.6 |
4.9 ± 0.3 |
5.4 ± 0.4 |
30.7 ± 1.0 |
0.71 ± 0.16 |
0.11 ± 0.02 |
| RH9 |
38.4 ± 0.9 |
8.7 ± 0.5 |
9.4 ± 0.6 |
29.8 ± 1.0 |
4.41 ± 0.32 |
1.29 ± 0.06 |
| RH10 |
38.4 ± 0.9 |
8.7 ± 0.5 |
9.4 ± 0.6 |
29.8 ± 1.0 |
4.41 ± 0.32 |
1.29 ± 0.06 |
| Average |
38.9 |
9.9 |
10.5 |
29.4 |
3.8 |
1.3 |
| Median |
45.6 |
11.3 |
11.9 |
29.7 |
4.1 |
1.6 |
| Deviation |
14.8 |
2.6 |
2.5 |
0.8 |
1.4 |
0.5 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
17.8 ± 0.9 |
21.7 ± 2.1 |
22.9 ± 2.4 |
42.1 ± 1.5 |
0.83 ± 0.11 |
0.42 ± 0.02 |
| VC |
20.6 ± 1.2 |
15.5 ± 1.3 |
17.4 ± 1.8 |
44.8 ± 1.8 |
1.34 ± 0.14 |
0.46 ± 0.02 |
| MX1 |
18.8 ± 1.0 |
21.2 ± 2.0 |
22.5 ± 2.4 |
42.3 ± 1.5 |
0.89 ± 0.12 |
0.44 ± 0.02 |
| MX2 |
19.1 ± 1.1 |
19.5 ± 1.8 |
21.1 ± 2.2 |
43.2 ± 1.6 |
0.99 ± 0.13 |
0.44 ± 0.03 |
| MX3 |
19.1 ± 1.0 |
20.0 ± 1.8 |
21.5 ± 2.3 |
43.0 ± 1.6 |
0.97 ± 0.13 |
0.45 ± 0.02 |
| RH8 |
1.3 ± 1.2 |
8.2 ± 0.7 |
9.6 ± 1.0 |
46.7 ± 2.0 |
0.16 ± 0.14 |
0.03 ± 0.03 |
| RH9 |
15.9 ± 1.0 |
14.9 ± 1.3 |
16.8 ± 1.8 |
45.0 ± 1.8 |
1.08 ± 0.12 |
0.35 ± 0.03 |
| RH10 |
15.9 ± 1.0 |
14.9 ± 1.3 |
16.8 ± 1.8 |
45.0 ± 1.8 |
1.08 ± 0.12 |
0.35 ± 0.03 |
| Average |
16.1 |
17.0 |
18.6 |
44.0 |
0.9 |
0.4 |
| Median |
18.8 |
19.5 |
21.1 |
44.8 |
1.0 |
0.4 |
| Deviation |
6.2 |
4.5 |
4.4 |
1.6 |
0.3 |
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)
| 
