Database: Ace Shock Analysis
Event ID: 20020840057
Observation time: 03/25/2002 84.04006 0057 [UT]
|
|
General
Information (About, Top)
| Year |
2002 |
| Fractional day of year |
84.040058 |
| Arrival time of shock [seconds of day] |
3461.0 ± 26.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.035 |
| Y GSE location of spacecraft [Re] |
-0.002 |
| Z GSE location of spacecraft [Re] |
-0.002 |
| Upstream plasma points selected for analysis |
0012 |
| Upstream field points selected for analysis |
0049 |
| Downstream plasma points selected for analysis |
0008
|
| Downstream field points selected for analysis |
0035 |
| Minimum chisq/dof for RH8,RH9,RH10 |
9.09, 39.86, 49.65 |
Event added to database
|
Sun May 1 22:06:22 2005
|
Event last processed
|
Tue May 3 14:18:44 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.007 ± 0.001
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-401.1 ± 3.7 |
-472.4 ± 4.0 |
| Vy GSE [km/s] |
-36.2 ± 5.0 |
-10.7 ± 5.7 |
| Vz GSE [km/s] |
2.9 ± 8.8 |
58.0 ± 7.2 |
| Wi [km/s] |
15.0 ± 3.9 |
22.6 ± 2.8 |
| We [km/s] |
473.5 ± 123.6 |
714.9 ± 87.2 |
| Ni [n/cc] |
1.0 ± 0.3 |
1.8 ± 0.2 |
| Bx GSE [nT] |
7.1 ± 0.2 |
8.0 ± 0.5 |
| By GSE [nT] |
-11.2 ± 0.3 |
-13.3 ± 0.4 |
| Bz GSE [nT] |
7.7 ± 0.2 |
12.4 ± 0.3 |
Plasma Beta
|
0.002 ± 0.002
|
0.005 ± 0.005
|
Sound Speed [km/s]
|
19.33 ± 5.05
|
29.19 ± 3.56
|
Alfven Speed [km/s]
|
343.40 ± 51.71
|
326.04 ± 16.19
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.570 ± 0.146 |
0.713 ± 0.119 |
0.408 ± 0.384 |
24.08 ± 5.21 |
128.67 ± 11.62 |
| VC |
-0.765 ± 0.065 |
0.271 ± 0.070 |
0.584 ± 0.506 |
35.76 ± 6.32 |
160.50 ± 4.99 |
| MX1 |
-0.812 ± 0.047 |
0.450 ± 0.072 |
0.372 ± 0.354 |
21.87 ± 4.55 |
151.01 ± 4.96 |
| MX2 |
-0.820 ± 0.048 |
0.437 ± 0.077 |
0.369 ± 0.352 |
21.68 ± 4.59 |
151.97 ± 5.26 |
| MX3 |
-0.843 ± 0.053 |
0.399 ± 0.096 |
0.360 ± 0.344 |
21.10 ± 4.70 |
154.65 ± 6.50 |
| RH08 |
-0.588 ± 0.013 |
-0.743 ± 0.010 |
-0.318 ± 0.307 |
-18.57 ± 0.39 |
231.64 ± 1.00 |
| RH09 |
-0.631 ± 0.055 |
-0.717 ± 0.049 |
-0.296 ± 0.287 |
-17.22 ± 4.00 |
228.64 ± 4.24 |
| RH10 |
-0.986 ± 0.012 |
-0.130 ± 0.069 |
0.106 ± 0.106 |
6.09 ± 4.02 |
187.52 ± 4.03 |
| Average |
-0.752 |
0.085 |
0.198 |
11.848 |
174.326 |
| Median |
-0.765 |
0.399 |
0.369 |
21.678 |
160.501 |
| Deviation |
0.144 |
0.555 |
0.338 |
20.026 |
38.013 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
54.8 ± 0.9 |
398.2 ± 130.2 |
1.61 ± 0.46 |
| VC |
75.2 ± 0.6 |
525.6 ± 150.2 |
1.61 ± 0.46 |
| MX1 |
59.0 ± 0.6 |
523.9 ± 140.6 |
1.61 ± 0.46 |
| MX2 |
59.3 ± 0.6 |
528.0 ± 140.7 |
1.61 ± 0.46 |
| MX3 |
60.1 ± 0.6 |
538.7 ± 140.6 |
1.61 ± 0.46 |
| RH08 |
83.7 ± 1.3 |
271.8 ± 20.1 |
1.61 ± 0.46 |
| RH09 |
85.3 ± 1.3 |
300.8 ± 20.8 |
1.61 ± 0.46 |
| RH10 |
72.1 ± 0.8 |
567.4 ± 108.5 |
1.61 ± 0.46 |
| Average |
68.7 |
456.8 |
1.61 |
| Median |
72.1 |
525.6 |
1.61 |
| Deviation |
12.0 |
116.7 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
194.0 ± 3.8 |
11.1 ± 2.9 |
198.2 ± 29.8 |
343.8 ± 51.8 |
18.35 ± 4.05 |
0.58 ± 0.08 |
| VC |
226.8 ± 3.6 |
4.9 ± 1.3 |
87.8 ± 13.2 |
343.9 ± 51.8 |
48.48 ± 10.93 |
0.67 ± 0.10 |
| MX1 |
213.5 ± 3.3 |
9.9 ± 2.6 |
176.7 ± 26.6 |
343.8 ± 51.8 |
22.63 ± 4.95 |
0.63 ± 0.09 |
| MX2 |
213.7 ± 3.3 |
9.9 ± 2.6 |
175.3 ± 26.4 |
343.8 ± 51.8 |
22.83 ± 4.99 |
0.63 ± 0.09 |
| MX3 |
214.0 ± 3.2 |
9.6 ± 2.5 |
171.3 ± 25.8 |
343.8 ± 51.8 |
23.40 ± 5.11 |
0.63 ± 0.09 |
| RH8 |
9.9 ± 4.0 |
2.1 ± 0.6 |
37.7 ± 5.7 |
344.0 ± 51.8 |
4.68 ± 1.67 |
0.03 ± 0.01 |
| RH9 |
22.5 ± 3.9 |
1.6 ± 0.4 |
28.1 ± 4.2 |
344.0 ± 51.8 |
14.72 ± 2.90 |
0.07 ± 0.01 |
| RH10 |
166.9 ± 2.8 |
5.9 ± 1.5 |
105.3 ± 15.9 |
343.9 ± 51.8 |
29.66 ± 6.29 |
0.49 ± 0.07 |
| Average |
157.7 |
6.9 |
122.6 |
343.9 |
23.1 |
0.5 |
| Median |
213.5 |
9.6 |
171.3 |
343.9 |
22.8 |
0.6 |
| Deviation |
89.2 |
3.8 |
67.0 |
0.1 |
12.6 |
0.3 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
112.7 ± 7.0 |
16.8 ± 2.0 |
188.2 ± 9.3 |
326.9 ± 16.2 |
6.81 ± 0.96 |
0.35 ± 0.03 |
| VC |
133.2 ± 6.1 |
7.4 ± 0.9 |
83.4 ± 4.1 |
327.3 ± 16.2 |
18.18 ± 2.59 |
0.41 ± 0.03 |
| MX1 |
123.6 ± 5.8 |
15.0 ± 1.8 |
167.8 ± 8.3 |
327.0 ± 16.2 |
8.38 ± 1.23 |
0.38 ± 0.03 |
| MX2 |
123.7 ± 5.7 |
14.9 ± 1.8 |
166.5 ± 8.3 |
327.0 ± 16.2 |
8.46 ± 1.25 |
0.38 ± 0.03 |
| MX3 |
123.8 ± 5.6 |
14.5 ± 1.8 |
162.6 ± 8.1 |
327.0 ± 16.2 |
8.66 ± 1.28 |
0.38 ± 0.03 |
| RH8 |
4.4 ± 6.8 |
3.2 ± 0.4 |
35.8 ± 1.8 |
327.3 ± 16.2 |
1.53 ± 2.47 |
0.01 ± 0.02 |
| RH9 |
12.1 ± 6.6 |
2.4 ± 0.3 |
26.7 ± 1.3 |
327.4 ± 16.2 |
5.33 ± 3.54 |
0.04 ± 0.02 |
| RH10 |
94.1 ± 3.9 |
8.9 ± 1.1 |
100.0 ± 5.0 |
327.2 ± 16.2 |
10.74 ± 1.83 |
0.29 ± 0.02 |
| Average |
91.0 |
10.4 |
116.4 |
327.2 |
8.5 |
0.3 |
| Median |
123.6 |
14.5 |
162.6 |
327.2 |
8.5 |
0.4 |
| Deviation |
52.4 |
5.7 |
63.6 |
0.2 |
4.8 |
0.2 |
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)
| 
