Database: Ace Shock Analysis
Event ID: 20010861715
Observation time: 03/27/2001 86.71892 1715 [UT]
|
|
General
Information (About, Top)
| Year |
2001 |
| Fractional day of year |
86.718924 |
| Arrival time of shock [seconds of day] |
62115.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
| X GSE location of spacecraft [Re] |
0.035 |
| Y GSE location of spacecraft [Re] |
-0.004 |
| Z GSE location of spacecraft [Re] |
-0.001 |
| Upstream plasma points selected for analysis |
0011 |
| Upstream field points selected for analysis |
0047 |
| Downstream plasma points selected for analysis |
0011
|
| Downstream field points selected for analysis |
0044 |
| Minimum chisq/dof for RH8,RH9,RH10 |
32.67, 34.18, 34.70 |
Event added to database
|
Sat Apr 30 21:49:57 2005
|
Event last processed
|
Tue May 3 13:51:17 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.006 ± 0.000
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-421.1 ± 2.9 |
-495.8 ± 11.0 |
| Vy GSE [km/s] |
-0.1 ± 4.0 |
-62.9 ± 8.4 |
| Vz GSE [km/s] |
40.1 ± 7.4 |
-4.4 ± 4.4 |
| Wi [km/s] |
52.8 ± 1.6 |
68.6 ± 1.5 |
| We [km/s] |
1670.1 ± 50.3 |
2169.8 ± 46.0 |
| Ni [n/cc] |
7.4 ± 0.6 |
16.0 ± 1.0 |
| Bx GSE [nT] |
-6.8 ± 0.7 |
-14.0 ± 0.8 |
| By GSE [nT] |
9.1 ± 0.5 |
8.9 ± 2.3 |
| Bz GSE [nT] |
2.8 ± 0.6 |
16.0 ± 1.1 |
Plasma Beta
|
0.319 ± 0.328
|
0.296 ± 0.293
|
Sound Speed [km/s]
|
68.18 ± 2.05
|
88.58 ± 1.88
|
Alfven Speed [km/s]
|
94.14 ± 7.03
|
126.27 ± 3.31
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.410 ± 0.078 |
0.888 ± 0.045 |
-0.209 ± 0.206 |
-12.08 ± 8.51 |
114.76 ± 4.99 |
| VC |
-0.696 ± 0.079 |
-0.588 ± 0.091 |
-0.413 ± 0.388 |
-24.39 ± 4.73 |
220.19 ± 7.27 |
| MX1 |
-0.725 ± 0.135 |
-0.558 ± 0.174 |
-0.403 ± 0.380 |
-23.79 ± 3.94 |
217.56 ± 13.65 |
| MX2 |
-0.708 ± 0.094 |
-0.581 ± 0.113 |
-0.401 ± 0.378 |
-23.66 ± 3.72 |
219.37 ± 9.04 |
| MX3 |
-0.705 ± 0.084 |
-0.586 ± 0.099 |
-0.399 ± 0.377 |
-23.54 ± 3.97 |
219.75 ± 7.91 |
| RH08 |
-0.936 ± 0.012 |
-0.351 ± 0.033 |
-0.006 ± 0.006 |
-0.32 ± 2.00 |
200.56 ± 2.00 |
| RH09 |
-0.936 ± 0.017 |
-0.351 ± 0.046 |
0.006 ± 0.006 |
0.32 ± 2.16 |
200.56 ± 2.84 |
| RH10 |
-0.936 ± 0.020 |
-0.351 ± 0.053 |
0.006 ± 0.006 |
0.32 ± 2.53 |
200.56 ± 3.25 |
| Average |
-0.757 |
-0.310 |
-0.228 |
-13.392 |
199.162 |
| Median |
-0.708 |
-0.351 |
-0.209 |
-12.076 |
217.560 |
| Deviation |
0.180 |
0.497 |
0.201 |
11.869 |
35.339 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
28.6 ± 3.5 |
138.6 ± 20.8 |
2.17 ± 0.25 |
| VC |
81.3 ± 2.8 |
476.9 ± 20.1 |
2.17 ± 0.25 |
| MX1 |
83.7 ± 2.8 |
489.1 ± 19.9 |
2.17 ± 0.25 |
| MX2 |
82.1 ± 2.9 |
482.6 ± 20.0 |
2.17 ± 0.25 |
| MX3 |
81.8 ± 2.9 |
481.4 ± 20.0 |
2.17 ± 0.25 |
| RH08 |
74.4 ± 3.6 |
566.3 ± 17.4 |
2.17 ± 0.25 |
| RH09 |
74.3 ± 3.6 |
565.8 ± 17.3 |
2.17 ± 0.25 |
| RH10 |
74.3 ± 3.6 |
565.8 ± 17.3 |
2.17 ± 0.25 |
| Average |
72.6 |
470.8 |
2.17 |
| Median |
81.3 |
489.1 |
2.17 |
| Deviation |
18.2 |
140.5 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
-25.3 ± 4.8 |
54.9 ± 1.6 |
82.7 ± 6.2 |
102.5 ± 6.1 |
-0.46 ± 0.08 |
-0.25 ± 0.04 |
| VC |
200.5 ± 2.2 |
8.4 ± 0.3 |
14.3 ± 1.1 |
116.0 ± 5.9 |
23.88 ± 0.78 |
1.73 ± 0.09 |
| MX1 |
199.9 ± 2.2 |
6.0 ± 0.2 |
10.3 ± 0.8 |
116.2 ± 5.9 |
33.12 ± 1.08 |
1.72 ± 0.09 |
| MX2 |
200.5 ± 2.1 |
7.6 ± 0.3 |
12.9 ± 1.0 |
116.1 ± 5.9 |
26.54 ± 0.86 |
1.73 ± 0.09 |
| MX3 |
200.6 ± 2.1 |
7.9 ± 0.3 |
13.4 ± 1.0 |
116.0 ± 5.9 |
25.52 ± 0.83 |
1.73 ± 0.09 |
| RH8 |
172.3 ± 2.9 |
14.9 ± 0.5 |
25.3 ± 1.9 |
115.3 ± 5.9 |
11.55 ± 0.27 |
1.50 ± 0.06 |
| RH9 |
171.3 ± 3.0 |
15.1 ± 0.5 |
25.5 ± 1.9 |
115.3 ± 5.9 |
11.37 ± 0.26 |
1.49 ± 0.06 |
| RH10 |
171.3 ± 3.0 |
15.1 ± 0.5 |
25.5 ± 1.9 |
115.3 ± 5.9 |
11.37 ± 0.26 |
1.49 ± 0.06 |
| Average |
161.4 |
16.2 |
26.2 |
114.1 |
17.9 |
1.4 |
| Median |
199.9 |
14.9 |
25.3 |
116.0 |
23.9 |
1.7 |
| Deviation |
76.8 |
16.1 |
23.7 |
4.7 |
11.1 |
0.7 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
-9.5 ± 10.8 |
72.0 ± 1.3 |
110.9 ± 2.9 |
136.4 ± 2.9 |
-0.13 ± 0.15 |
-0.07 ± 0.08 |
| VC |
93.2 ± 5.6 |
11.1 ± 0.2 |
19.2 ± 0.5 |
153.9 ± 3.0 |
8.44 ± 0.61 |
0.61 ± 0.04 |
| MX1 |
92.7 ± 5.8 |
7.9 ± 0.1 |
13.8 ± 0.4 |
154.1 ± 3.0 |
11.68 ± 0.87 |
0.60 ± 0.04 |
| MX2 |
93.2 ± 5.7 |
9.9 ± 0.2 |
17.3 ± 0.5 |
153.9 ± 3.0 |
9.38 ± 0.68 |
0.61 ± 0.04 |
| MX3 |
93.3 ± 5.7 |
10.3 ± 0.2 |
18.0 ± 0.5 |
153.9 ± 3.0 |
9.03 ± 0.65 |
0.61 ± 0.04 |
| RH8 |
80.0 ± 8.5 |
19.6 ± 0.3 |
33.9 ± 0.9 |
153.0 ± 3.0 |
4.08 ± 0.48 |
0.52 ± 0.06 |
| RH9 |
79.5 ± 8.5 |
19.8 ± 0.3 |
34.2 ± 0.9 |
153.0 ± 3.0 |
4.02 ± 0.48 |
0.52 ± 0.06 |
| RH10 |
79.5 ± 8.5 |
19.8 ± 0.3 |
34.2 ± 0.9 |
153.0 ± 3.0 |
4.02 ± 0.48 |
0.52 ± 0.06 |
| Average |
75.2 |
21.3 |
35.2 |
151.4 |
6.3 |
0.5 |
| Median |
92.7 |
19.6 |
33.9 |
153.9 |
8.4 |
0.6 |
| Deviation |
34.9 |
21.1 |
31.8 |
6.1 |
3.9 |
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)
| 
