Database: Ace Shock Analysis
Event ID: 20012720906
Observation time: 09/29/2001 272.37939 0906 [UT]
|
|
General
Information (About, Top)
| Year |
2001 |
| Fractional day of year |
272.379387 |
| Arrival time of shock [seconds of day] |
32779.0 ± 60.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.035 |
| Y GSE location of spacecraft [Re] |
-0.003 |
| Z GSE location of spacecraft [Re] |
-0.002 |
| Upstream plasma points selected for analysis |
0009 |
| Upstream field points selected for analysis |
0041 |
| Downstream plasma points selected for analysis |
0008
|
| Downstream field points selected for analysis |
0033 |
| Minimum chisq/dof for RH8,RH9,RH10 |
5.23, 7.49, 7.68 |
Event added to database
|
Sat Apr 30 21:52:17 2005
|
Event last processed
|
Tue May 3 14:04:51 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.005 ± 0.000
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-537.4 ± 4.2 |
-637.5 ± 17.9 |
| Vy GSE [km/s] |
-18.4 ± 8.4 |
30.0 ± 8.6 |
| Vz GSE [km/s] |
4.0 ± 8.0 |
23.0 ± 15.7 |
| Wi [km/s] |
66.9 ± 2.2 |
78.6 ± 3.8 |
| We [km/s] |
2114.5 ± 70.7 |
2485.6 ± 120.0 |
| Ni [n/cc] |
3.0 ± 0.1 |
6.9 ± 0.8 |
| Bx GSE [nT] |
-4.0 ± 0.4 |
-2.2 ± 1.4 |
| By GSE [nT] |
0.5 ± 1.3 |
-8.1 ± 3.2 |
| Bz GSE [nT] |
1.4 ± 0.7 |
-0.7 ± 3.0 |
Plasma Beta
|
1.441 ± 1.239
|
1.834 ± 0.934
|
Sound Speed [km/s]
|
86.32 ± 2.89
|
101.47 ± 4.90
|
Alfven Speed [km/s]
|
57.19 ± 6.93
|
75.95 ± 21.75
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.959 ± 0.064 |
-0.203 ± 0.155 |
0.196 ± 0.193 |
11.30 ± 16.37 |
191.96 ± 9.25 |
| VC |
-0.887 ± 0.049 |
0.433 ± 0.091 |
0.159 ± 0.158 |
9.15 ± 8.31 |
153.98 ± 5.85 |
| MX1 |
-0.974 ± 0.133 |
-0.094 ± 0.501 |
0.207 ± 0.204 |
11.92 ± 34.38 |
185.52 ± 29.47 |
| MX2 |
-0.986 ± 0.026 |
-0.153 ± 0.133 |
0.059 ± 0.059 |
3.36 ± 15.01 |
188.82 ± 7.70 |
| MX3 |
-0.993 ± 0.017 |
-0.116 ± 0.145 |
0.006 ± 0.006 |
0.36 ± 16.36 |
186.63 ± 8.37 |
| RH08 |
-0.991 ± 0.003 |
-0.131 ± 0.022 |
-0.028 ± 0.028 |
-1.60 ± 1.00 |
187.52 ± 1.26 |
| RH09 |
-0.974 ± 0.016 |
-0.217 ± 0.067 |
-0.061 ± 0.061 |
-3.52 ± 4.03 |
192.53 ± 3.95 |
| RH10 |
-0.978 ± 0.014 |
-0.200 ± 0.067 |
-0.061 ± 0.061 |
-3.52 ± 4.03 |
191.53 ± 3.95 |
| Average |
-0.968 |
-0.085 |
0.059 |
3.432 |
184.812 |
| Median |
-0.974 |
-0.131 |
0.059 |
3.365 |
188.815 |
| Deviation |
0.034 |
0.214 |
0.113 |
6.528 |
12.727 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
22.1 ± 13.2 |
673.4 ± 34.7 |
2.31 ± 0.30 |
| VC |
25.2 ± 13.9 |
669.3 ± 34.5 |
2.31 ± 0.30 |
| MX1 |
19.2 ± 10.5 |
692.8 ± 35.5 |
2.31 ± 0.30 |
| MX2 |
24.2 ± 12.8 |
688.2 ± 34.6 |
2.31 ± 0.30 |
| MX3 |
25.7 ± 11.5 |
692.4 ± 34.5 |
2.31 ± 0.30 |
| RH08 |
27.4 ± 11.6 |
687.6 ± 34.2 |
2.31 ± 0.30 |
| RH09 |
30.9 ± 12.7 |
667.7 ± 33.3 |
2.31 ± 0.30 |
| RH10 |
30.5 ± 12.4 |
671.5 ± 33.5 |
2.31 ± 0.30 |
| Average |
25.7 |
680.4 |
2.31 |
| Median |
25.7 |
687.6 |
2.31 |
| Deviation |
4.0 |
10.8 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
153.3 ± 2.1 |
50.4 ± 5.3 |
53.0 ± 6.4 |
90.6 ± 2.1 |
3.07 ± 0.32 |
1.69 ± 0.05 |
| VC |
199.8 ± 6.5 |
48.7 ± 5.0 |
51.7 ± 6.3 |
91.5 ± 2.1 |
4.13 ± 0.34 |
2.18 ± 0.10 |
| MX1 |
166.9 ± 2.7 |
51.9 ± 5.6 |
54.0 ± 6.5 |
89.7 ± 2.2 |
3.25 ± 0.33 |
1.86 ± 0.07 |
| MX2 |
155.0 ± 2.9 |
49.3 ± 5.1 |
52.2 ± 6.3 |
91.2 ± 2.1 |
3.17 ± 0.31 |
1.70 ± 0.06 |
| MX3 |
156.4 ± 3.4 |
48.4 ± 4.9 |
51.5 ± 6.2 |
91.7 ± 2.1 |
3.26 ± 0.31 |
1.71 ± 0.06 |
| RH8 |
152.7 ± 3.5 |
47.4 ± 4.8 |
50.8 ± 6.2 |
92.2 ± 2.1 |
3.25 ± 0.30 |
1.66 ± 0.06 |
| RH9 |
140.3 ± 3.2 |
45.3 ± 4.4 |
49.1 ± 5.9 |
93.3 ± 2.1 |
3.12 ± 0.29 |
1.51 ± 0.05 |
| RH10 |
142.6 ± 3.3 |
45.6 ± 4.5 |
49.3 ± 6.0 |
93.1 ± 2.1 |
3.15 ± 0.30 |
1.53 ± 0.06 |
| Average |
158.4 |
48.4 |
51.4 |
91.7 |
3.3 |
1.7 |
| Median |
155.0 |
48.7 |
51.7 |
91.7 |
3.2 |
1.7 |
| Deviation |
18.7 |
2.2 |
1.7 |
1.2 |
0.3 |
0.2 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
63.4 ± 18.6 |
64.0 ± 16.4 |
70.4 ± 20.1 |
110.3 ± 2.6 |
1.04 ± 0.35 |
0.58 ± 0.17 |
| VC |
87.1 ± 17.7 |
61.6 ± 15.6 |
68.7 ± 19.7 |
111.7 ± 2.9 |
1.53 ± 0.59 |
0.78 ± 0.16 |
| MX1 |
70.0 ± 19.0 |
66.1 ± 17.1 |
71.7 ± 20.5 |
108.9 ± 2.5 |
1.13 ± 0.39 |
0.64 ± 0.17 |
| MX2 |
62.5 ± 18.1 |
62.4 ± 15.8 |
69.3 ± 19.8 |
111.3 ± 2.8 |
1.05 ± 0.34 |
0.56 ± 0.16 |
| MX3 |
62.5 ± 17.8 |
61.2 ± 15.4 |
68.4 ± 19.6 |
111.9 ± 3.0 |
1.07 ± 0.35 |
0.56 ± 0.16 |
| RH8 |
60.4 ± 17.6 |
59.8 ± 15.0 |
67.4 ± 19.3 |
112.8 ± 3.2 |
1.05 ± 0.34 |
0.54 ± 0.16 |
| RH9 |
54.5 ± 17.2 |
57.0 ± 14.1 |
65.2 ± 18.7 |
114.3 ± 3.6 |
0.99 ± 0.31 |
0.48 ± 0.15 |
| RH10 |
55.5 ± 17.2 |
57.4 ± 14.2 |
65.5 ± 18.7 |
114.1 ± 3.6 |
1.00 ± 0.32 |
0.49 ± 0.15 |
| Average |
64.5 |
61.2 |
68.3 |
111.9 |
1.1 |
0.6 |
| Median |
62.5 |
61.6 |
68.7 |
111.9 |
1.1 |
0.6 |
| Deviation |
10.3 |
3.1 |
2.3 |
1.8 |
0.2 |
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)
| 
