Database: Ace Shock Analysis
Event ID: 20020810323
Observation time: 03/22/2002 81.14098 0323 [UT]
|
|
General
Information (About, Top)
| Year |
2002 |
| Fractional day of year |
81.140984 |
| Arrival time of shock [seconds of day] |
12181.0 ± 16.0 |
| 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 |
0008 |
| Upstream field points selected for analysis |
0033 |
| Downstream plasma points selected for analysis |
0008
|
| Downstream field points selected for analysis |
0036 |
| Minimum chisq/dof for RH8,RH9,RH10 |
4.85, 4.98, 5.16 |
Event added to database
|
Sun May 1 22:04:06 2005
|
Event last processed
|
Tue May 3 14:17:05 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.000 ± 0.004
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-429.1 ± 3.1 |
-462.6 ± 3.3 |
| Vy GSE [km/s] |
-36.2 ± 2.5 |
-16.6 ± 7.2 |
| Vz GSE [km/s] |
-1.9 ± 10.1 |
24.3 ± 1.7 |
| Wi [km/s] |
17.9 ± 1.3 |
23.5 ± 1.2 |
| We [km/s] |
564.8 ± 41.1 |
742.7 ± 38.1 |
| Ni [n/cc] |
6.3 ± 0.5 |
7.5 ± 1.0 |
| Bx GSE [nT] |
1.3 ± 0.5 |
1.2 ± 0.3 |
| By GSE [nT] |
-7.6 ± 0.4 |
-7.9 ± 0.5 |
| Bz GSE [nT] |
2.2 ± 1.2 |
9.6 ± 0.4 |
Plasma Beta
|
0.066 ± 0.066
|
0.056 ± 0.055
|
Sound Speed [km/s]
|
23.06 ± 1.68
|
30.32 ± 1.56
|
Alfven Speed [km/s]
|
70.34 ± 2.85
|
100.12 ± 5.94
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.205 ± 0.096 |
0.978 ± 0.020 |
0.044 ± 0.044 |
2.50 ± 3.76 |
101.82 ± 5.63 |
| VC |
-0.729 ± 0.113 |
0.423 ± 0.147 |
0.538 ± 0.479 |
32.57 ± 9.58 |
149.87 ± 11.03 |
| MX1 |
-0.441 ± 0.216 |
0.897 ± 0.106 |
0.022 ± 0.022 |
1.25 ± 2.58 |
116.20 ± 13.80 |
| MX2 |
-0.686 ± 0.122 |
0.728 ± 0.115 |
0.018 ± 0.018 |
1.03 ± 1.83 |
133.31 ± 9.60 |
| MX3 |
-0.849 ± 0.097 |
0.528 ± 0.156 |
0.009 ± 0.009 |
0.54 ± 2.17 |
148.14 ± 10.51 |
| RH08 |
0.031 ± 0.035 |
0.996 ± 0.003 |
0.084 ± 0.084 |
4.81 ± 2.00 |
88.25 ± 2.00 |
| RH09 |
0.031 ± 0.010 |
0.996 ± 0.001 |
0.084 ± 0.084 |
4.81 ± 0.57 |
88.25 ± 0.55 |
| RH10 |
0.031 ± 0.015 |
0.996 ± 0.001 |
0.084 ± 0.084 |
4.81 ± 0.87 |
88.25 ± 0.87 |
| Average |
-0.352 |
0.818 |
0.110 |
6.538 |
114.259 |
| Median |
-0.205 |
0.978 |
0.084 |
4.807 |
116.196 |
| Deviation |
0.372 |
0.232 |
0.176 |
10.673 |
26.640 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
19.3 ± 7.7 |
223.8 ± 4502.9 |
1.18 ± 0.11 |
| VC |
68.2 ± 4.1 |
615.7 ± 9040.7 |
1.18 ± 0.11 |
| MX1 |
24.8 ± 3.5 |
375.2 ± 6036.6 |
1.18 ± 0.11 |
| MX2 |
37.8 ± 2.1 |
515.9 ± 7465.1 |
1.18 ± 0.11 |
| MX3 |
50.8 ± 2.6 |
595.2 ± 8161.3 |
1.18 ± 0.11 |
| RH08 |
23.9 ± 9.2 |
67.1 ± 2899.4 |
1.18 ± 0.11 |
| RH09 |
23.9 ± 9.2 |
67.1 ± 2899.4 |
1.18 ± 0.11 |
| RH10 |
23.9 ± 9.2 |
67.1 ± 2899.4 |
1.18 ± 0.11 |
| Average |
34.1 |
315.9 |
1.18 |
| Median |
24.8 |
375.2 |
1.18 |
| Deviation |
17.2 |
240.7 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
171.4 ± 2.4 |
21.6 ± 1.5 |
66.4 ± 2.7 |
70.8 ± 2.8 |
7.97 ± 0.60 |
2.43 ± 0.11 |
| VC |
319.2 ± 5.4 |
8.2 ± 0.5 |
26.1 ± 1.1 |
73.6 ± 2.4 |
39.16 ± 2.93 |
4.34 ± 0.16 |
| MX1 |
218.3 ± 1.9 |
20.7 ± 1.5 |
63.9 ± 2.6 |
71.1 ± 2.7 |
10.59 ± 0.76 |
3.08 ± 0.13 |
| MX2 |
247.9 ± 1.8 |
17.8 ± 1.2 |
55.6 ± 2.3 |
71.9 ± 2.6 |
13.97 ± 0.95 |
3.45 ± 0.13 |
| MX3 |
249.8 ± 2.1 |
14.1 ± 0.9 |
44.5 ± 1.8 |
72.7 ± 2.5 |
17.77 ± 1.16 |
3.44 ± 0.12 |
| RH8 |
116.4 ± 3.2 |
20.9 ± 1.5 |
64.3 ± 2.6 |
71.0 ± 2.7 |
5.61 ± 0.47 |
1.64 ± 0.09 |
| RH9 |
116.4 ± 3.2 |
20.9 ± 1.5 |
64.3 ± 2.6 |
71.0 ± 2.7 |
5.61 ± 0.47 |
1.64 ± 0.09 |
| RH10 |
116.4 ± 3.2 |
20.9 ± 1.5 |
64.3 ± 2.6 |
71.0 ± 2.7 |
5.61 ± 0.47 |
1.64 ± 0.09 |
| Average |
194.5 |
18.1 |
56.2 |
71.6 |
13.3 |
2.7 |
| Median |
218.3 |
20.9 |
64.3 |
71.1 |
10.6 |
3.1 |
| Deviation |
76.4 |
4.7 |
14.1 |
1.0 |
11.4 |
1.0 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
144.3 ± 6.6 |
28.5 ± 1.4 |
94.5 ± 5.6 |
100.7 ± 5.9 |
5.08 ± 0.25 |
1.44 ± 0.09 |
| VC |
272.5 ± 2.2 |
10.8 ± 0.5 |
37.2 ± 2.2 |
104.1 ± 5.7 |
25.19 ± 1.17 |
2.63 ± 0.17 |
| MX1 |
185.4 ± 5.5 |
27.3 ± 1.4 |
90.9 ± 5.4 |
101.0 ± 5.9 |
6.81 ± 0.30 |
1.84 ± 0.11 |
| MX2 |
210.3 ± 3.8 |
23.5 ± 1.2 |
79.1 ± 4.7 |
101.9 ± 5.8 |
8.96 ± 0.40 |
2.07 ± 0.13 |
| MX3 |
210.9 ± 2.5 |
18.7 ± 0.9 |
63.3 ± 3.8 |
103.0 ± 5.7 |
11.33 ± 0.52 |
2.05 ± 0.13 |
| RH8 |
95.7 ± 7.3 |
27.5 ± 1.4 |
91.5 ± 5.4 |
100.9 ± 5.9 |
3.49 ± 0.24 |
0.95 ± 0.07 |
| RH9 |
95.7 ± 7.3 |
27.5 ± 1.4 |
91.5 ± 5.4 |
100.9 ± 5.9 |
3.49 ± 0.24 |
0.95 ± 0.07 |
| RH10 |
95.7 ± 7.3 |
27.5 ± 1.4 |
91.5 ± 5.4 |
100.9 ± 5.9 |
3.49 ± 0.24 |
0.95 ± 0.07 |
| Average |
163.8 |
23.9 |
79.9 |
101.7 |
8.5 |
1.6 |
| Median |
185.4 |
27.5 |
91.5 |
101.0 |
6.8 |
1.8 |
| Deviation |
66.5 |
6.2 |
20.1 |
1.2 |
7.3 |
0.6 |
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)
| 
