Database: Ace Shock Analysis
Event ID: 20022061259
Observation time: 07/25/2002 206.54135 1259 [UT]
|
|
General
Information (About, Top)
| Year |
2002 |
| Fractional day of year |
206.541354 |
| Arrival time of shock [seconds of day] |
46773.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.038 |
| Y GSE location of spacecraft [Re] |
-0.005 |
| Z GSE location of spacecraft [Re] |
0.004 |
| Upstream plasma points selected for analysis |
0011 |
| Upstream field points selected for analysis |
0042 |
| Downstream plasma points selected for analysis |
0010
|
| Downstream field points selected for analysis |
0038 |
| Minimum chisq/dof for RH8,RH9,RH10 |
12.61, 17.62, 18.02 |
Event added to database
|
Sun May 1 22:32:10 2005
|
Event last processed
|
Tue May 3 14:30:54 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.006 ± 0.001
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-447.4 ± 1.4 |
-495.4 ± 2.5 |
| Vy GSE [km/s] |
0.7 ± 3.4 |
-22.5 ± 7.9 |
| Vz GSE [km/s] |
22.1 ± 2.3 |
49.3 ± 4.5 |
| Wi [km/s] |
34.9 ± 1.0 |
44.2 ± 1.9 |
| We [km/s] |
1104.3 ± 33.1 |
1398.5 ± 59.1 |
| Ni [n/cc] |
3.2 ± 0.1 |
4.5 ± 0.3 |
| Bx GSE [nT] |
5.1 ± 0.2 |
8.3 ± 0.9 |
| By GSE [nT] |
-5.5 ± 0.4 |
-8.7 ± 1.4 |
| Bz GSE [nT] |
3.7 ± 0.4 |
5.0 ± 1.2 |
Plasma Beta
|
0.118 ± 0.118
|
0.106 ± 0.107
|
Sound Speed [km/s]
|
45.08 ± 1.35
|
57.09 ± 2.41
|
Alfven Speed [km/s]
|
101.49 ± 2.35
|
136.06 ± 5.44
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.707 ± 0.367 |
-0.684 ± 0.378 |
-0.177 ± 0.175 |
-10.21 ± 43.51 |
224.06 ± 29.66 |
| VC |
-0.807 ± 0.065 |
-0.380 ± 0.113 |
0.453 ± 0.419 |
26.91 ± 5.49 |
205.21 ± 7.90 |
| MX1 |
-0.724 ± 0.120 |
-0.475 ± 0.146 |
0.501 ± 0.454 |
30.05 ± 10.87 |
213.27 ± 10.82 |
| MX2 |
-0.721 ± 0.116 |
-0.463 ± 0.144 |
0.516 ± 0.464 |
31.06 ± 10.25 |
212.73 ± 10.71 |
| MX3 |
-0.718 ± 0.116 |
-0.445 ± 0.145 |
0.535 ± 0.477 |
32.34 ± 9.99 |
211.80 ± 10.86 |
| RH08 |
-0.982 ± 0.001 |
-0.043 ± 0.010 |
0.184 ± 0.182 |
10.62 ± 0.38 |
182.51 ± 0.58 |
| RH09 |
-0.990 ± 0.010 |
-0.009 ± 0.070 |
0.140 ± 0.139 |
8.03 ± 4.02 |
180.50 ± 4.07 |
| RH10 |
-0.990 ± 0.010 |
-0.009 ± 0.070 |
0.140 ± 0.139 |
8.03 ± 4.02 |
180.50 ± 4.07 |
| Average |
-0.830 |
-0.313 |
0.286 |
17.103 |
201.323 |
| Median |
-0.724 |
-0.380 |
0.453 |
26.906 |
211.801 |
| Deviation |
0.134 |
0.258 |
0.255 |
15.323 |
17.467 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
86.9 ± 2.9 |
485.7 ± 48.1 |
1.39 ± 0.10 |
| VC |
87.8 ± 1.8 |
584.1 ± 61.8 |
1.39 ± 0.10 |
| MX1 |
84.5 ± 1.8 |
547.8 ± 61.8 |
1.39 ± 0.10 |
| MX2 |
84.5 ± 1.8 |
546.4 ± 61.9 |
1.39 ± 0.10 |
| MX3 |
84.6 ± 1.8 |
545.2 ± 61.9 |
1.39 ± 0.10 |
| RH08 |
61.0 ± 1.8 |
629.7 ± 53.5 |
1.39 ± 0.10 |
| RH09 |
57.8 ± 1.9 |
628.1 ± 51.7 |
1.39 ± 0.10 |
| RH10 |
57.8 ± 1.9 |
628.1 ± 51.7 |
1.39 ± 0.10 |
| Average |
75.6 |
574.4 |
1.39 |
| Median |
84.5 |
584.1 |
1.39 |
| Deviation |
13.9 |
52.3 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
173.7 ± 3.0 |
2.2 ± 0.1 |
5.4 ± 0.1 |
111.0 ± 2.5 |
78.96 ± 2.88 |
1.57 ± 0.04 |
| VC |
213.5 ± 2.1 |
1.6 ± 0.0 |
3.9 ± 0.1 |
111.0 ± 2.5 |
134.46 ± 4.15 |
1.92 ± 0.05 |
| MX1 |
213.2 ± 2.3 |
3.9 ± 0.1 |
9.7 ± 0.2 |
111.0 ± 2.5 |
54.13 ± 1.70 |
1.92 ± 0.05 |
| MX2 |
212.9 ± 2.2 |
4.0 ± 0.1 |
9.8 ± 0.2 |
111.0 ± 2.5 |
53.59 ± 1.68 |
1.92 ± 0.05 |
| MX3 |
212.5 ± 2.2 |
3.9 ± 0.1 |
9.6 ± 0.2 |
111.0 ± 2.5 |
54.57 ± 1.70 |
1.92 ± 0.05 |
| RH8 |
186.4 ± 1.6 |
20.3 ± 0.6 |
49.2 ± 1.1 |
109.2 ± 2.5 |
9.18 ± 0.27 |
1.71 ± 0.04 |
| RH9 |
182.1 ± 1.5 |
22.4 ± 0.6 |
54.0 ± 1.3 |
108.8 ± 2.5 |
8.14 ± 0.24 |
1.67 ± 0.04 |
| RH10 |
182.1 ± 1.5 |
22.4 ± 0.6 |
54.0 ± 1.3 |
108.8 ± 2.5 |
8.14 ± 0.24 |
1.67 ± 0.04 |
| Average |
197.1 |
10.1 |
24.5 |
110.2 |
50.1 |
1.8 |
| Median |
212.5 |
4.0 |
9.8 |
111.0 |
54.1 |
1.9 |
| Deviation |
17.4 |
9.7 |
23.3 |
1.1 |
43.4 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
128.7 ± 6.9 |
2.8 ± 0.1 |
7.3 ± 0.3 |
147.6 ± 4.9 |
45.80 ± 2.75 |
0.87 ± 0.06 |
| VC |
153.6 ± 3.0 |
2.0 ± 0.1 |
5.2 ± 0.2 |
147.6 ± 4.9 |
75.79 ± 3.02 |
1.04 ± 0.05 |
| MX1 |
153.8 ± 3.4 |
5.0 ± 0.2 |
13.0 ± 0.5 |
147.5 ± 4.9 |
30.59 ± 1.20 |
1.04 ± 0.05 |
| MX2 |
153.6 ± 3.3 |
5.1 ± 0.2 |
13.1 ± 0.5 |
147.5 ± 4.9 |
30.28 ± 1.18 |
1.04 ± 0.05 |
| MX3 |
153.1 ± 3.2 |
5.0 ± 0.2 |
12.9 ± 0.5 |
147.5 ± 4.9 |
30.81 ± 1.19 |
1.04 ± 0.05 |
| RH8 |
133.2 ± 2.2 |
25.9 ± 0.9 |
66.0 ± 2.6 |
145.3 ± 5.0 |
5.15 ± 0.24 |
0.92 ± 0.04 |
| RH9 |
130.5 ± 2.2 |
28.5 ± 1.0 |
72.4 ± 2.9 |
144.8 ± 5.0 |
4.58 ± 0.22 |
0.90 ± 0.03 |
| RH10 |
130.5 ± 2.2 |
28.5 ± 1.0 |
72.4 ± 2.9 |
144.8 ± 5.0 |
4.58 ± 0.22 |
0.90 ± 0.03 |
| Average |
142.1 |
12.9 |
32.8 |
146.6 |
28.4 |
1.0 |
| Median |
153.1 |
5.1 |
13.1 |
147.5 |
30.6 |
1.0 |
| Deviation |
12.3 |
12.3 |
31.2 |
1.3 |
24.6 |
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)
| 
