Database: Ace Shock Analysis
Event ID: 20022001441
Observation time: 07/19/2002 200.61248 1441 [UT]
|
|
General
Information (About, Top)
| Year |
2002 |
| Fractional day of year |
200.612477 |
| Arrival time of shock [seconds of day] |
52918.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
| X GSE location of spacecraft [Re] |
0.039 |
| Y GSE location of spacecraft [Re] |
-0.004 |
| Z GSE location of spacecraft [Re] |
0.004 |
| Upstream plasma points selected for analysis |
0010 |
| Upstream field points selected for analysis |
0043 |
| Downstream plasma points selected for analysis |
0009
|
| Downstream field points selected for analysis |
0036 |
| Minimum chisq/dof for RH8,RH9,RH10 |
9.98, 15.47, 16.42 |
Event added to database
|
Sun May 1 22:29:28 2005
|
Event last processed
|
Tue May 3 14:29:19 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.005 ± 0.001
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-446.7 ± 4.0 |
-486.8 ± 5.8 |
| Vy GSE [km/s] |
-14.5 ± 5.6 |
-94.0 ± 15.2 |
| Vz GSE [km/s] |
-80.6 ± 2.9 |
-150.2 ± 7.3 |
| Wi [km/s] |
51.8 ± 1.8 |
77.4 ± 2.8 |
| We [km/s] |
1638.5 ± 57.4 |
2448.7 ± 87.9 |
| Ni [n/cc] |
3.8 ± 0.2 |
6.9 ± 1.2 |
| Bx GSE [nT] |
-7.7 ± 0.2 |
-10.4 ± 1.1 |
| By GSE [nT] |
-0.7 ± 0.7 |
-2.0 ± 3.6 |
| Bz GSE [nT] |
4.3 ± 0.4 |
8.0 ± 1.3 |
Plasma Beta
|
0.269 ± 0.281
|
0.464 ± 0.490
|
Sound Speed [km/s]
|
66.89 ± 2.34
|
99.97 ± 3.59
|
Alfven Speed [km/s]
|
100.09 ± 3.46
|
115.61 ± 13.08
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.988 ± 0.106 |
-0.153 ± 0.678 |
-0.032 ± 0.032 |
-1.82 ± 17.67 |
188.83 ± 39.34 |
| VC |
-0.362 ± 0.090 |
-0.698 ± 0.069 |
-0.617 ± 0.523 |
-38.12 ± 5.46 |
242.58 ± 7.01 |
| MX1 |
-0.439 ± 0.208 |
-0.718 ± 0.157 |
-0.540 ± 0.480 |
-32.67 ± 12.31 |
238.58 ± 15.92 |
| MX2 |
-0.483 ± 0.155 |
-0.674 ± 0.131 |
-0.560 ± 0.492 |
-34.02 ± 10.33 |
234.39 ± 12.18 |
| MX3 |
-0.507 ± 0.145 |
-0.632 ± 0.128 |
-0.586 ± 0.508 |
-35.91 ± 8.69 |
231.29 ± 12.10 |
| RH08 |
-0.695 ± 0.009 |
-0.576 ± 0.011 |
-0.430 ± 0.401 |
-25.48 ± 0.59 |
219.61 ± 0.84 |
| RH09 |
-0.876 ± 0.034 |
-0.382 ± 0.065 |
-0.296 ± 0.287 |
-17.22 ± 4.00 |
203.57 ± 4.24 |
| RH10 |
-0.901 ± 0.031 |
-0.338 ± 0.066 |
-0.274 ± 0.267 |
-15.89 ± 4.01 |
200.56 ± 4.20 |
| Average |
-0.656 |
-0.521 |
-0.417 |
-25.141 |
219.925 |
| Median |
-0.507 |
-0.576 |
-0.430 |
-25.478 |
231.291 |
| Deviation |
0.241 |
0.206 |
0.203 |
12.605 |
20.035 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
31.1 ± 2.0 |
556.4 ± 48.6 |
1.83 ± 0.32 |
| VC |
85.6 ± 1.5 |
470.8 ± 64.2 |
1.83 ± 0.32 |
| MX1 |
79.5 ± 1.6 |
496.2 ± 64.5 |
1.83 ± 0.32 |
| MX2 |
78.1 ± 1.4 |
515.7 ± 65.9 |
1.83 ± 0.32 |
| MX3 |
77.8 ± 1.2 |
527.1 ± 66.8 |
1.83 ± 0.32 |
| RH08 |
63.5 ± 1.1 |
578.3 ± 66.0 |
1.83 ± 0.32 |
| RH09 |
49.4 ± 1.1 |
604.6 ± 62.0 |
1.83 ± 0.32 |
| RH10 |
47.2 ± 1.2 |
603.4 ± 60.8 |
1.83 ± 0.32 |
| Average |
64.0 |
544.1 |
1.83 |
| Median |
77.8 |
556.4 |
1.83 |
| Deviation |
19.6 |
49.7 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
110.5 ± 3.4 |
53.0 ± 1.6 |
85.7 ± 3.0 |
108.1 ± 3.1 |
2.09 ± 0.12 |
1.02 ± 0.04 |
| VC |
249.1 ± 3.2 |
4.2 ± 0.1 |
7.6 ± 0.3 |
120.3 ± 3.2 |
58.78 ± 1.20 |
2.07 ± 0.05 |
| MX1 |
246.3 ± 3.1 |
10.1 ± 0.3 |
18.2 ± 0.6 |
120.0 ± 3.2 |
24.32 ± 0.51 |
2.05 ± 0.05 |
| MX2 |
245.3 ± 2.8 |
11.5 ± 0.3 |
20.7 ± 0.7 |
119.9 ± 3.2 |
21.28 ± 0.46 |
2.05 ± 0.05 |
| MX3 |
244.4 ± 2.5 |
11.8 ± 0.3 |
21.1 ± 0.7 |
119.8 ± 3.2 |
20.76 ± 0.46 |
2.04 ± 0.05 |
| RH8 |
224.6 ± 2.1 |
25.3 ± 0.7 |
44.6 ± 1.5 |
117.7 ± 3.1 |
8.87 ± 0.22 |
1.91 ± 0.05 |
| RH9 |
184.2 ± 2.2 |
38.1 ± 1.1 |
65.1 ± 2.2 |
114.2 ± 3.1 |
4.84 ± 0.16 |
1.61 ± 0.04 |
| RH10 |
174.2 ± 2.4 |
40.0 ± 1.1 |
68.0 ± 2.3 |
113.6 ± 3.1 |
4.35 ± 0.15 |
1.53 ± 0.04 |
| Average |
209.8 |
24.3 |
41.4 |
116.7 |
18.2 |
1.8 |
| Median |
244.4 |
25.3 |
44.6 |
119.8 |
20.8 |
2.0 |
| Deviation |
49.8 |
17.7 |
28.7 |
4.4 |
18.6 |
0.4 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
56.5 ± 5.8 |
73.5 ± 3.2 |
99.0 ± 11.2 |
134.2 ± 10.0 |
0.77 ± 0.11 |
0.42 ± 0.06 |
| VC |
136.1 ± 10.6 |
5.7 ± 0.3 |
8.8 ± 1.0 |
153.0 ± 10.3 |
23.71 ± 1.71 |
0.89 ± 0.06 |
| MX1 |
133.9 ± 10.7 |
13.7 ± 0.7 |
21.0 ± 2.4 |
152.4 ± 10.2 |
9.76 ± 0.75 |
0.88 ± 0.07 |
| MX2 |
133.4 ± 10.1 |
15.6 ± 0.8 |
23.9 ± 2.7 |
152.3 ± 10.2 |
8.54 ± 0.64 |
0.88 ± 0.07 |
| MX3 |
133.0 ± 9.5 |
16.0 ± 0.8 |
24.4 ± 2.8 |
152.2 ± 10.2 |
8.34 ± 0.60 |
0.88 ± 0.06 |
| RH8 |
121.0 ± 8.7 |
34.4 ± 1.7 |
51.5 ± 5.8 |
149.1 ± 10.1 |
3.52 ± 0.28 |
0.81 ± 0.07 |
| RH9 |
98.1 ± 6.6 |
52.1 ± 2.5 |
75.2 ± 8.5 |
143.9 ± 10.0 |
1.89 ± 0.17 |
0.68 ± 0.07 |
| RH10 |
92.1 ± 6.2 |
54.8 ± 2.6 |
78.5 ± 8.9 |
142.9 ± 10.0 |
1.69 ± 0.16 |
0.65 ± 0.07 |
| Average |
113.0 |
33.2 |
47.8 |
147.5 |
7.3 |
0.8 |
| Median |
133.0 |
34.4 |
51.5 |
152.2 |
8.3 |
0.9 |
| Deviation |
28.5 |
24.5 |
33.1 |
6.7 |
7.5 |
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)
| 
