Database: Ace Shock Analysis
Event ID: 20022752214
Observation time: 10/02/2002 275.92640 2214 [UT]
|
|
General
Information (About, Top)
| Year |
2002 |
| Fractional day of year |
275.926400 |
| Arrival time of shock [seconds of day] |
80041.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.035 |
| Y GSE location of spacecraft [Re] |
0.001 |
| Z GSE location of spacecraft [Re] |
-0.003 |
| Upstream plasma points selected for analysis |
0012 |
| Upstream field points selected for analysis |
0046 |
| Downstream plasma points selected for analysis |
0011
|
| Downstream field points selected for analysis |
0043 |
| Minimum chisq/dof for RH8,RH9,RH10 |
8.58, 9.79, 10.41 |
Event added to database
|
Sun May 1 22:43:18 2005
|
Event last processed
|
Tue May 3 14:35:39 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.008 ± 0.002
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-455.5 ± 4.4 |
-508.3 ± 3.9 |
| Vy GSE [km/s] |
-11.8 ± 6.5 |
-15.0 ± 4.7 |
| Vz GSE [km/s] |
12.8 ± 3.7 |
-19.1 ± 7.9 |
| Wi [km/s] |
24.4 ± 3.1 |
30.7 ± 1.8 |
| We [km/s] |
772.6 ± 98.3 |
971.5 ± 58.4 |
| Ni [n/cc] |
4.0 ± 0.7 |
6.1 ± 0.3 |
| Bx GSE [nT] |
-0.4 ± 0.4 |
1.1 ± 0.3 |
| By GSE [nT] |
2.7 ± 0.5 |
7.2 ± 0.3 |
| Bz GSE [nT] |
-2.1 ± 0.7 |
1.2 ± 1.6 |
Plasma Beta
|
0.413 ± 0.373
|
0.211 ± 0.205
|
Sound Speed [km/s]
|
31.54 ± 4.01
|
39.66 ± 2.39
|
Alfven Speed [km/s]
|
38.84 ± 2.08
|
66.93 ± 1.70
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.333 ± 0.395 |
0.615 ± 0.290 |
-0.715 ± 0.557 |
-45.62 ± 18.66 |
118.43 ± 35.35 |
| VC |
-0.859 ± 0.068 |
-0.057 ± 0.127 |
-0.509 ± 0.459 |
-30.57 ± 7.66 |
183.79 ± 8.47 |
| MX1 |
-0.566 ± 0.396 |
0.631 ± 0.366 |
-0.531 ± 0.474 |
-32.07 ± 21.64 |
131.87 ± 33.86 |
| MX2 |
-0.767 ± 0.098 |
0.519 ± 0.139 |
-0.378 ± 0.359 |
-22.22 ± 5.61 |
145.94 ± 10.30 |
| MX3 |
-0.872 ± 0.061 |
0.430 ± 0.115 |
-0.234 ± 0.230 |
-13.56 ± 6.76 |
153.75 ± 7.49 |
| RH08 |
-0.483 ± 0.010 |
-0.359 ± 0.013 |
0.799 ± 0.557 |
53.02 ± 0.00 |
216.60 ± 1.59 |
| RH09 |
-0.483 ± 0.052 |
-0.359 ± 0.064 |
0.799 ± 0.557 |
53.02 ± 2.22 |
216.60 ± 7.28 |
| RH10 |
-0.470 ± 0.056 |
-0.375 ± 0.064 |
0.799 ± 0.557 |
53.02 ± 2.71 |
218.61 ± 7.25 |
| Average |
-0.604 |
0.131 |
0.004 |
1.878 |
173.197 |
| Median |
-0.483 |
0.430 |
-0.234 |
-13.558 |
183.791 |
| Deviation |
0.202 |
0.462 |
0.672 |
43.307 |
41.008 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
19.9 ± 10.0 |
259.0 ± 57.9 |
1.58 ± 0.34 |
| VC |
69.4 ± 8.6 |
577.0 ± 101.8 |
1.58 ± 0.34 |
| MX1 |
30.0 ± 7.6 |
382.9 ± 69.0 |
1.58 ± 0.34 |
| MX2 |
44.7 ± 6.8 |
494.5 ± 80.7 |
1.58 ± 0.34 |
| MX3 |
55.2 ± 6.4 |
548.5 ± 84.4 |
1.58 ± 0.34 |
| RH08 |
46.3 ± 7.6 |
233.8 ± 24.7 |
1.58 ± 0.34 |
| RH09 |
46.3 ± 7.6 |
233.8 ± 24.7 |
1.58 ± 0.34 |
| RH10 |
45.1 ± 7.5 |
226.7 ± 24.3 |
1.58 ± 0.34 |
| Average |
44.6 |
369.5 |
1.58 |
| Median |
46.3 |
382.9 |
1.58 |
| Deviation |
14.9 |
151.3 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
123.7 ± 3.8 |
27.2 ± 1.7 |
36.5 ± 2.0 |
42.2 ± 1.8 |
4.57 ± 0.32 |
2.94 ± 0.15 |
| VC |
191.4 ± 3.2 |
8.7 ± 0.5 |
13.7 ± 0.7 |
49.4 ± 2.3 |
22.16 ± 1.41 |
3.88 ± 0.20 |
| MX1 |
139.5 ± 4.6 |
23.9 ± 1.5 |
33.7 ± 1.8 |
44.1 ± 1.9 |
5.84 ± 0.39 |
3.17 ± 0.16 |
| MX2 |
156.1 ± 4.8 |
18.6 ± 1.1 |
27.6 ± 1.5 |
46.6 ± 2.1 |
8.42 ± 0.54 |
3.36 ± 0.17 |
| MX3 |
159.4 ± 5.0 |
14.5 ± 0.8 |
22.1 ± 1.2 |
48.0 ± 2.2 |
11.06 ± 0.70 |
3.32 ± 0.17 |
| RH8 |
-0.5 ± 3.8 |
18.0 ± 1.0 |
26.8 ± 1.4 |
46.8 ± 2.1 |
-0.03 ± 0.21 |
-0.01 ± 0.08 |
| RH9 |
-0.5 ± 3.8 |
18.0 ± 1.0 |
26.8 ± 1.4 |
46.8 ± 2.1 |
-0.03 ± 0.21 |
-0.01 ± 0.08 |
| RH10 |
-2.0 ± 3.8 |
18.4 ± 1.1 |
27.4 ± 1.5 |
46.7 ± 2.1 |
-0.11 ± 0.20 |
-0.04 ± 0.08 |
| Average |
95.9 |
18.4 |
26.8 |
46.3 |
6.5 |
2.1 |
| Median |
139.5 |
18.4 |
27.4 |
46.8 |
5.8 |
3.2 |
| Deviation |
82.5 |
5.6 |
6.9 |
2.3 |
7.6 |
1.8 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
85.3 ± 6.4 |
36.2 ± 2.0 |
62.9 ± 1.6 |
68.9 ± 1.7 |
2.35 ± 0.12 |
1.24 ± 0.09 |
| VC |
129.6 ± 5.3 |
12.1 ± 0.6 |
23.5 ± 0.6 |
76.9 ± 2.1 |
10.70 ± 0.58 |
1.69 ± 0.08 |
| MX1 |
94.7 ± 5.7 |
32.5 ± 1.7 |
58.0 ± 1.5 |
70.7 ± 1.8 |
2.91 ± 0.14 |
1.34 ± 0.08 |
| MX2 |
105.2 ± 5.2 |
25.7 ± 1.3 |
47.6 ± 1.2 |
73.5 ± 2.0 |
4.10 ± 0.21 |
1.43 ± 0.08 |
| MX3 |
107.3 ± 4.8 |
20.1 ± 1.0 |
38.2 ± 1.0 |
75.2 ± 2.0 |
5.34 ± 0.29 |
1.43 ± 0.07 |
| RH8 |
-1.7 ± 6.3 |
24.9 ± 1.2 |
46.2 ± 1.2 |
73.7 ± 2.0 |
-0.06 ± 0.25 |
-0.02 ± 0.09 |
| RH9 |
-1.7 ± 6.3 |
24.9 ± 1.2 |
46.2 ± 1.2 |
73.7 ± 2.0 |
-0.06 ± 0.25 |
-0.02 ± 0.09 |
| RH10 |
-2.6 ± 6.3 |
25.4 ± 1.3 |
47.2 ± 1.2 |
73.5 ± 2.0 |
-0.09 ± 0.24 |
-0.03 ± 0.09 |
| Average |
64.5 |
25.2 |
46.2 |
73.3 |
3.1 |
0.9 |
| Median |
94.7 |
25.4 |
47.2 |
73.7 |
2.9 |
1.3 |
| Deviation |
56.5 |
7.3 |
12.0 |
2.5 |
3.7 |
0.8 |
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)
| 
