Database: Ace Shock Analysis
Event ID: 20013041253
Observation time: 10/31/2001 304.53694 1253 [UT]
|
|
General
Information (About, Top)
| Year |
2001 |
| Fractional day of year |
304.536944 |
| Arrival time of shock [seconds of day] |
46392.0 ± 32.0 |
| 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] |
-0.003 |
| Upstream plasma points selected for analysis |
0008 |
| Upstream field points selected for analysis |
0033 |
| Downstream plasma points selected for analysis |
0011
|
| Downstream field points selected for analysis |
0043 |
| Minimum chisq/dof for RH8,RH9,RH10 |
7.07, 10.65, 10.81 |
Event added to database
|
Sat Apr 30 21:53:03 2005
|
Event last processed
|
Tue May 3 14:10:33 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.008 ± 0.001
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-329.8 ± 1.9 |
-397.0 ± 6.0 |
| Vy GSE [km/s] |
-3.0 ± 3.5 |
-44.8 ± 7.2 |
| Vz GSE [km/s] |
-10.2 ± 2.2 |
-54.0 ± 7.6 |
| Wi [km/s] |
24.9 ± 1.9 |
40.6 ± 6.3 |
| We [km/s] |
786.0 ± 60.2 |
1284.9 ± 198.4 |
| Ni [n/cc] |
2.8 ± 0.3 |
7.7 ± 2.0 |
| Bx GSE [nT] |
-3.6 ± 0.1 |
-3.9 ± 0.5 |
| By GSE [nT] |
1.4 ± 0.1 |
5.9 ± 0.4 |
| Bz GSE [nT] |
-0.4 ± 0.1 |
2.6 ± 0.7 |
Plasma Beta
|
0.235 ± 0.273
|
0.444 ± 0.444
|
Sound Speed [km/s]
|
32.09 ± 2.46
|
52.46 ± 8.10
|
Alfven Speed [km/s]
|
51.88 ± 3.49
|
61.03 ± 8.59
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.951 ± 0.017 |
0.137 ± 0.053 |
-0.277 ± 0.270 |
-16.07 ± 3.12 |
171.81 ± 3.21 |
| VC |
-0.745 ± 0.057 |
-0.464 ± 0.082 |
-0.480 ± 0.439 |
-28.67 ± 3.83 |
211.91 ± 6.18 |
| MX1 |
-0.962 ± 0.012 |
0.113 ± 0.057 |
-0.249 ± 0.244 |
-14.42 ± 2.31 |
173.30 ± 3.41 |
| MX2 |
-0.974 ± 0.013 |
0.082 ± 0.072 |
-0.211 ± 0.208 |
-12.18 ± 2.99 |
175.21 ± 4.25 |
| MX3 |
-0.981 ± 0.015 |
0.059 ± 0.088 |
-0.183 ± 0.181 |
-10.56 ± 4.48 |
176.53 ± 5.14 |
| RH08 |
-0.996 ± 0.001 |
-0.061 ± 0.000 |
-0.061 ± 0.061 |
-3.52 ± 0.64 |
183.51 ± 0.00 |
| RH09 |
-0.997 ± 0.005 |
-0.079 ± 0.066 |
0.006 ± 0.006 |
0.32 ± 3.94 |
184.51 ± 3.79 |
| RH10 |
-0.997 ± 0.005 |
-0.079 ± 0.066 |
0.006 ± 0.006 |
0.32 ± 3.97 |
184.51 ± 3.80 |
| Average |
-0.950 |
-0.036 |
-0.181 |
-10.598 |
182.663 |
| Median |
-0.974 |
0.059 |
-0.183 |
-10.557 |
183.510 |
| Deviation |
0.085 |
0.194 |
0.164 |
9.726 |
12.881 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
16.1 ± 1.3 |
432.6 ± 31.6 |
2.55 ± 0.72 |
| VC |
54.8 ± 1.5 |
402.1 ± 31.9 |
2.55 ± 0.72 |
| MX1 |
16.4 ± 1.4 |
436.4 ± 31.3 |
2.55 ± 0.72 |
| MX2 |
17.2 ± 1.6 |
440.5 ± 30.8 |
2.55 ± 0.72 |
| MX3 |
18.0 ± 1.6 |
442.6 ± 30.4 |
2.55 ± 0.72 |
| RH08 |
24.7 ± 1.8 |
446.9 ± 28.3 |
2.55 ± 0.72 |
| RH09 |
26.4 ± 1.7 |
442.2 ± 26.8 |
2.55 ± 0.72 |
| RH10 |
26.4 ± 1.7 |
442.2 ± 26.8 |
2.55 ± 0.72 |
| Average |
25.0 |
435.7 |
2.55 |
| Median |
24.7 |
442.2 |
2.55 |
| Deviation |
12.8 |
14.2 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
116.4 ± 2.1 |
30.1 ± 2.1 |
49.8 ± 3.4 |
53.1 ± 3.3 |
3.88 ± 0.30 |
2.20 ± 0.16 |
| VC |
150.1 ± 2.4 |
16.3 ± 0.9 |
29.9 ± 2.0 |
58.9 ± 2.8 |
9.25 ± 0.57 |
2.56 ± 0.14 |
| MX1 |
117.0 ± 2.0 |
30.0 ± 2.1 |
49.8 ± 3.4 |
53.1 ± 3.3 |
3.91 ± 0.30 |
2.21 ± 0.16 |
| MX2 |
117.3 ± 2.0 |
29.9 ± 2.1 |
49.6 ± 3.3 |
53.2 ± 3.2 |
3.95 ± 0.30 |
2.21 ± 0.15 |
| MX3 |
117.3 ± 2.0 |
29.7 ± 2.1 |
49.3 ± 3.3 |
53.3 ± 3.2 |
3.97 ± 0.31 |
2.21 ± 0.15 |
| RH8 |
117.5 ± 1.8 |
27.8 ± 1.8 |
47.1 ± 3.2 |
54.3 ± 3.1 |
4.24 ± 0.32 |
2.17 ± 0.14 |
| RH9 |
113.2 ± 1.8 |
27.3 ± 1.8 |
46.5 ± 3.1 |
54.6 ± 3.1 |
4.17 ± 0.31 |
2.08 ± 0.13 |
| RH10 |
113.2 ± 1.8 |
27.3 ± 1.8 |
46.5 ± 3.1 |
54.6 ± 3.1 |
4.17 ± 0.31 |
2.08 ± 0.13 |
| Average |
120.2 |
27.3 |
46.1 |
54.4 |
4.7 |
2.2 |
| Median |
117.3 |
29.7 |
49.3 |
54.3 |
4.2 |
2.2 |
| Deviation |
12.2 |
4.6 |
6.7 |
1.9 |
1.8 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
46.2 ± 8.0 |
47.1 ± 7.0 |
58.6 ± 8.2 |
65.3 ± 9.3 |
1.02 ± 0.31 |
0.73 ± 0.23 |
| VC |
59.7 ± 6.3 |
24.0 ± 3.5 |
35.2 ± 5.0 |
76.8 ± 11.1 |
2.56 ± 0.59 |
0.80 ± 0.18 |
| MX1 |
46.2 ± 7.8 |
46.9 ± 7.0 |
58.6 ± 8.2 |
65.4 ± 9.3 |
1.02 ± 0.31 |
0.73 ± 0.22 |
| MX2 |
46.0 ± 7.5 |
46.5 ± 6.9 |
58.3 ± 8.2 |
65.7 ± 9.4 |
1.03 ± 0.30 |
0.73 ± 0.22 |
| MX3 |
45.8 ± 7.3 |
46.1 ± 6.9 |
58.1 ± 8.2 |
66.0 ± 9.4 |
1.03 ± 0.30 |
0.72 ± 0.21 |
| RH8 |
45.4 ± 6.1 |
42.5 ± 6.3 |
55.5 ± 7.8 |
68.3 ± 9.8 |
1.10 ± 0.29 |
0.69 ± 0.18 |
| RH9 |
43.2 ± 5.6 |
41.6 ± 6.1 |
54.7 ± 7.7 |
68.9 ± 9.9 |
1.07 ± 0.28 |
0.65 ± 0.17 |
| RH10 |
43.2 ± 5.6 |
41.6 ± 6.1 |
54.7 ± 7.7 |
68.9 ± 9.9 |
1.07 ± 0.28 |
0.65 ± 0.17 |
| Average |
47.0 |
42.1 |
54.2 |
68.2 |
1.2 |
0.7 |
| Median |
46.0 |
46.1 |
58.1 |
68.3 |
1.1 |
0.7 |
| Deviation |
5.3 |
7.7 |
7.9 |
3.8 |
0.5 |
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)
| 
