Database: Ace Shock Analysis
Event ID: 20011580852
Observation time: 06/07/2001 158.36994 0852 [UT]
|
|
General
Information (About, Top)
| Year |
2001 |
| Fractional day of year |
158.369942 |
| Arrival time of shock [seconds of day] |
31963.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.037 |
| Y GSE location of spacecraft [Re] |
0.006 |
| Z GSE location of spacecraft [Re] |
-0.001 |
| Upstream plasma points selected for analysis |
0010 |
| Upstream field points selected for analysis |
0039 |
| Downstream plasma points selected for analysis |
0009
|
| Downstream field points selected for analysis |
0038 |
| Minimum chisq/dof for RH8,RH9,RH10 |
2.63, 3.85, 3.90 |
Event added to database
|
Sat Apr 30 21:51:38 2005
|
Event last processed
|
Tue May 3 14:00:05 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.009 ± 0.000
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-371.9 ± 1.3 |
-408.4 ± 3.5 |
| Vy GSE [km/s] |
-37.7 ± 1.4 |
-64.3 ± 4.8 |
| Vz GSE [km/s] |
-24.8 ± 1.9 |
-34.4 ± 9.2 |
| Wi [km/s] |
24.5 ± 0.9 |
33.0 ± 1.4 |
| We [km/s] |
776.2 ± 27.6 |
1042.6 ± 45.3 |
| Ni [n/cc] |
5.1 ± 0.2 |
9.1 ± 0.3 |
| Bx GSE [nT] |
6.5 ± 0.1 |
5.7 ± 0.8 |
| By GSE [nT] |
-4.4 ± 0.2 |
-8.0 ± 0.4 |
| Bz GSE [nT] |
-0.4 ± 0.4 |
-1.8 ± 1.5 |
Plasma Beta
|
0.106 ± 0.107
|
0.202 ± 0.188
|
Sound Speed [km/s]
|
31.69 ± 1.13
|
42.56 ± 1.85
|
Alfven Speed [km/s]
|
75.70 ± 1.84
|
73.66 ± 2.51
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.971 ± 0.041 |
0.240 ± 0.166 |
-0.007 ± 0.007 |
-0.38 ± 10.66 |
166.10 ± 9.79 |
| VC |
-0.796 ± 0.058 |
-0.576 ± 0.074 |
-0.188 ± 0.186 |
-10.83 ± 10.04 |
215.91 ± 5.13 |
| MX1 |
-0.980 ± 0.038 |
0.199 ± 0.186 |
-0.021 ± 0.021 |
-1.21 ± 4.46 |
168.49 ± 10.90 |
| MX2 |
-0.986 ± 0.030 |
0.167 ± 0.175 |
0.015 ± 0.015 |
0.86 ± 4.52 |
170.36 ± 10.20 |
| MX3 |
-0.991 ± 0.026 |
0.081 ± 0.158 |
0.108 ± 0.108 |
6.20 ± 11.83 |
175.35 ± 9.12 |
| RH08 |
-0.988 ± 0.003 |
0.061 ± 0.013 |
0.140 ± 0.139 |
8.03 ± 1.31 |
176.49 ± 0.75 |
| RH09 |
-0.991 ± 0.009 |
0.026 ± 0.064 |
0.128 ± 0.128 |
7.38 ± 4.06 |
178.50 ± 3.72 |
| RH10 |
-0.991 ± 0.009 |
0.026 ± 0.065 |
0.128 ± 0.128 |
7.38 ± 4.06 |
178.50 ± 3.75 |
| Average |
-0.962 |
0.028 |
0.038 |
2.180 |
178.712 |
| Median |
-0.986 |
0.081 |
0.108 |
6.199 |
176.490 |
| Deviation |
0.068 |
0.257 |
0.113 |
6.476 |
15.735 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
20.7 ± 2.3 |
417.4 ± 8.6 |
1.77 ± 0.13 |
| VC |
71.1 ± 2.3 |
430.9 ± 15.6 |
1.77 ± 0.13 |
| MX1 |
23.2 ± 2.3 |
425.8 ± 9.0 |
1.77 ± 0.13 |
| MX2 |
24.8 ± 2.2 |
430.5 ± 8.6 |
1.77 ± 0.13 |
| MX3 |
29.8 ± 2.0 |
437.3 ± 7.8 |
1.77 ± 0.13 |
| RH08 |
31.1 ± 1.9 |
436.5 ± 7.4 |
1.77 ± 0.13 |
| RH09 |
33.0 ± 1.9 |
441.9 ± 7.8 |
1.77 ± 0.13 |
| RH10 |
33.0 ± 1.9 |
441.9 ± 7.8 |
1.77 ± 0.13 |
| Average |
33.4 |
432.8 |
1.77 |
| Median |
31.1 |
436.5 |
1.77 |
| Deviation |
16.0 |
8.4 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
65.3 ± 1.3 |
29.3 ± 1.0 |
70.8 ± 1.7 |
76.7 ± 1.7 |
2.23 ± 0.10 |
0.85 ± 0.03 |
| VC |
108.7 ± 1.5 |
9.5 ± 0.3 |
24.5 ± 0.6 |
81.5 ± 1.4 |
11.45 ± 0.34 |
1.33 ± 0.03 |
| MX1 |
68.5 ± 1.3 |
28.7 ± 1.0 |
69.6 ± 1.7 |
76.9 ± 1.7 |
2.39 ± 0.10 |
0.89 ± 0.03 |
| MX2 |
70.7 ± 1.3 |
28.3 ± 0.9 |
68.7 ± 1.7 |
77.0 ± 1.7 |
2.50 ± 0.10 |
0.92 ± 0.03 |
| MX3 |
74.5 ± 1.2 |
26.8 ± 0.9 |
65.7 ± 1.6 |
77.6 ± 1.7 |
2.78 ± 0.11 |
0.96 ± 0.03 |
| RH8 |
74.7 ± 1.2 |
26.4 ± 0.9 |
64.8 ± 1.6 |
77.7 ± 1.7 |
2.83 ± 0.11 |
0.96 ± 0.03 |
| RH9 |
77.4 ± 1.2 |
25.8 ± 0.8 |
63.5 ± 1.5 |
77.9 ± 1.7 |
3.00 ± 0.11 |
0.99 ± 0.03 |
| RH10 |
77.4 ± 1.2 |
25.8 ± 0.8 |
63.5 ± 1.5 |
77.9 ± 1.7 |
3.00 ± 0.11 |
0.99 ± 0.03 |
| Average |
77.1 |
25.1 |
61.4 |
77.9 |
3.8 |
1.0 |
| Median |
74.7 |
26.8 |
65.7 |
77.7 |
2.8 |
1.0 |
| Deviation |
13.5 |
6.4 |
15.2 |
1.5 |
3.1 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
36.2 ± 3.3 |
38.7 ± 1.5 |
68.9 ± 2.3 |
75.8 ± 2.2 |
0.93 ± 0.07 |
0.48 ± 0.04 |
| VC |
62.6 ± 6.0 |
12.0 ± 0.3 |
23.8 ± 0.8 |
84.3 ± 1.8 |
5.20 ± 0.40 |
0.74 ± 0.07 |
| MX1 |
37.8 ± 3.5 |
37.8 ± 1.4 |
67.7 ± 2.3 |
76.2 ± 2.2 |
1.00 ± 0.07 |
0.50 ± 0.05 |
| MX2 |
39.3 ± 3.2 |
37.2 ± 1.4 |
66.9 ± 2.3 |
76.5 ± 2.2 |
1.06 ± 0.06 |
0.51 ± 0.04 |
| MX3 |
41.5 ± 2.5 |
35.1 ± 1.2 |
63.9 ± 2.2 |
77.5 ± 2.1 |
1.18 ± 0.05 |
0.54 ± 0.03 |
| RH8 |
41.6 ± 2.3 |
34.5 ± 1.2 |
63.1 ± 2.1 |
77.8 ± 2.1 |
1.21 ± 0.04 |
0.53 ± 0.03 |
| RH9 |
43.1 ± 2.4 |
33.6 ± 1.2 |
61.8 ± 2.1 |
78.2 ± 2.1 |
1.28 ± 0.05 |
0.55 ± 0.03 |
| RH10 |
43.1 ± 2.4 |
33.6 ± 1.2 |
61.8 ± 2.1 |
78.2 ± 2.1 |
1.28 ± 0.05 |
0.55 ± 0.03 |
| Average |
43.1 |
32.8 |
59.7 |
78.1 |
1.6 |
0.6 |
| Median |
41.6 |
35.1 |
63.9 |
77.8 |
1.2 |
0.5 |
| Deviation |
8.2 |
8.6 |
14.8 |
2.7 |
1.4 |
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)
| 
