Database: Ace Shock Analysis
Event ID: 20010941422
Observation time: 04/04/2001 94.59892 1422 [UT]
|
|
General
Information (About, Top)
| Year |
2001 |
| Fractional day of year |
94.598924 |
| Arrival time of shock [seconds of day] |
51747.0 ± 20.0 |
| 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 |
0009 |
| Upstream field points selected for analysis |
0043 |
| Downstream plasma points selected for analysis |
0015
|
| Downstream field points selected for analysis |
0060 |
| Minimum chisq/dof for RH8,RH9,RH10 |
35.63, 40.18, 41.55 |
Event added to database
|
Sat Apr 30 21:50:31 2005
|
Event last processed
|
Tue May 3 13:52:53 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.003 ± 0.031
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-457.6 ± 6.8 |
-641.7 ± 20.5 |
| Vy GSE [km/s] |
-24.0 ± 5.5 |
20.3 ± 14.1 |
| Vz GSE [km/s] |
5.4 ± 15.5 |
63.0 ± 39.5 |
| Wi [km/s] |
41.8 ± 3.1 |
91.4 ± 9.2 |
| We [km/s] |
1322.8 ± 96.6 |
2889.8 ± 290.8 |
| Ni [n/cc] |
5.0 ± 0.4 |
8.3 ± 2.1 |
| Bx GSE [nT] |
-5.0 ± 1.1 |
-0.1 ± 4.8 |
| By GSE [nT] |
1.9 ± 0.8 |
17.8 ± 3.6 |
| Bz GSE [nT] |
3.1 ± 0.9 |
-3.9 ± 4.6 |
Plasma Beta
|
0.499 ± 0.382
|
0.407 ± 0.359
|
Sound Speed [km/s]
|
54.00 ± 3.94
|
117.98 ± 11.87
|
Alfven Speed [km/s]
|
61.65 ± 7.76
|
152.06 ± 31.29
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.773 ± 0.094 |
0.433 ± 0.119 |
0.464 ± 0.427 |
27.62 ± 9.96 |
150.76 ± 8.31 |
| VC |
-0.930 ± 0.062 |
0.225 ± 0.079 |
0.290 ± 0.282 |
16.86 ± 11.98 |
166.39 ± 4.78 |
| MX1 |
-0.870 ± 0.212 |
0.396 ± 0.312 |
0.295 ± 0.286 |
17.13 ± 34.35 |
155.54 ± 19.98 |
| MX2 |
-0.881 ± 0.063 |
0.406 ± 0.110 |
0.242 ± 0.237 |
14.00 ± 9.89 |
155.26 ± 7.03 |
| MX3 |
-0.888 ± 0.062 |
0.403 ± 0.109 |
0.222 ± 0.219 |
12.85 ± 10.74 |
155.56 ± 6.97 |
| RH08 |
-0.943 ± 0.003 |
-0.262 ± 0.009 |
0.207 ± 0.204 |
11.93 ± 0.55 |
195.54 ± 0.55 |
| RH09 |
-0.903 ± 0.030 |
-0.357 ± 0.066 |
0.240 ± 0.235 |
13.90 ± 3.98 |
201.56 ± 4.17 |
| RH10 |
-0.894 ± 0.032 |
-0.371 ± 0.066 |
0.251 ± 0.246 |
14.56 ± 3.99 |
202.56 ± 4.20 |
| Average |
-0.885 |
0.109 |
0.276 |
16.106 |
172.897 |
| Median |
-0.888 |
0.396 |
0.251 |
14.560 |
166.392 |
| Deviation |
0.051 |
0.370 |
0.081 |
4.984 |
22.865 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
13.7 ± 7.4 |
884.4 ± 403.2 |
1.72 ± 0.44 |
| VC |
17.7 ± 9.5 |
1000.6 ± 440.4 |
1.72 ± 0.44 |
| MX1 |
15.2 ± 12.5 |
959.0 ± 429.4 |
1.72 ± 0.44 |
| MX2 |
18.0 ± 12.8 |
967.3 ± 431.7 |
1.72 ± 0.44 |
| MX3 |
19.0 ± 12.8 |
973.6 ± 432.9 |
1.72 ± 0.44 |
| RH08 |
39.5 ± 4.4 |
950.6 ± 399.7 |
1.72 ± 0.44 |
| RH09 |
43.2 ± 4.0 |
903.5 ± 376.7 |
1.72 ± 0.44 |
| RH10 |
43.6 ± 4.0 |
893.9 ± 372.3 |
1.72 ± 0.44 |
| Average |
26.2 |
941.6 |
1.72 |
| Median |
19.0 |
959.0 |
1.72 |
| Deviation |
13.3 |
42.3 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
538.5 ± 5.0 |
48.2 ± 3.0 |
59.9 ± 7.5 |
66.6 ± 4.0 |
11.21 ± 0.74 |
8.11 ± 0.47 |
| VC |
578.8 ± 5.0 |
46.4 ± 2.8 |
58.7 ± 7.4 |
67.9 ± 3.9 |
12.52 ± 0.78 |
8.55 ± 0.46 |
| MX1 |
568.8 ± 4.7 |
47.6 ± 2.9 |
59.5 ± 7.5 |
67.1 ± 3.9 |
12.00 ± 0.76 |
8.50 ± 0.46 |
| MX2 |
572.4 ± 4.9 |
46.2 ± 2.8 |
58.7 ± 7.4 |
68.0 ± 3.9 |
12.42 ± 0.76 |
8.44 ± 0.45 |
| MX3 |
575.9 ± 5.0 |
45.7 ± 2.7 |
58.3 ± 7.3 |
68.4 ± 3.9 |
12.63 ± 0.77 |
8.45 ± 0.44 |
| RH8 |
511.8 ± 5.6 |
34.1 ± 1.9 |
47.6 ± 6.0 |
74.9 ± 4.2 |
15.07 ± 0.90 |
6.85 ± 0.37 |
| RH9 |
480.5 ± 5.7 |
31.8 ± 1.8 |
45.0 ± 5.7 |
75.9 ± 4.2 |
15.17 ± 0.92 |
6.35 ± 0.36 |
| RH10 |
474.6 ± 5.8 |
31.5 ± 1.8 |
44.6 ± 5.6 |
76.0 ± 4.2 |
15.13 ± 0.92 |
6.26 ± 0.35 |
| Average |
537.7 |
41.4 |
54.0 |
70.6 |
13.3 |
7.7 |
| Median |
568.8 |
46.2 |
58.7 |
68.4 |
12.6 |
8.4 |
| Deviation |
43.5 |
7.5 |
7.0 |
4.2 |
1.6 |
1.0 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
350.3 ± 18.2 |
108.3 ± 12.3 |
147.7 ± 30.4 |
159.8 ± 26.7 |
3.28 ± 0.47 |
2.26 ± 0.47 |
| VC |
380.9 ± 15.7 |
104.5 ± 12.0 |
144.9 ± 29.8 |
162.4 ± 26.5 |
3.70 ± 0.55 |
2.42 ± 0.49 |
| MX1 |
374.2 ± 16.1 |
107.0 ± 12.2 |
146.7 ± 30.2 |
160.7 ± 26.6 |
3.55 ± 0.53 |
2.40 ± 0.50 |
| MX2 |
378.3 ± 16.1 |
104.2 ± 11.9 |
144.7 ± 29.8 |
162.6 ± 26.5 |
3.69 ± 0.56 |
2.40 ± 0.49 |
| MX3 |
381.8 ± 16.2 |
103.1 ± 11.8 |
143.8 ± 29.6 |
163.3 ± 26.4 |
3.76 ± 0.57 |
2.41 ± 0.49 |
| RH8 |
338.0 ± 15.4 |
77.5 ± 9.2 |
117.3 ± 24.1 |
177.1 ± 26.5 |
4.44 ± 0.69 |
1.96 ± 0.36 |
| RH9 |
316.2 ± 14.3 |
72.4 ± 8.6 |
110.9 ± 22.8 |
179.2 ± 26.6 |
4.44 ± 0.68 |
1.81 ± 0.33 |
| RH10 |
312.0 ± 14.1 |
71.7 ± 8.6 |
110.0 ± 22.6 |
179.5 ± 26.6 |
4.42 ± 0.67 |
1.78 ± 0.32 |
| Average |
353.9 |
93.6 |
133.3 |
168.1 |
3.9 |
2.2 |
| Median |
374.2 |
104.2 |
144.7 |
163.3 |
3.8 |
2.4 |
| Deviation |
29.2 |
16.5 |
17.2 |
8.8 |
0.5 |
0.3 |
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)
| 
