Database: Ace Shock Analysis
Event ID: 19992160115
Observation time: 08/04/1999 216.05274 0115 [UT]
|
|
General
Information (About, Top)
| Year |
1999 |
| Fractional day of year |
216.052743 |
| Arrival time of shock [seconds of day] |
4557.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.039 |
| Y GSE location of spacecraft [Re] |
0.002 |
| Z GSE location of spacecraft [Re] |
0.003 |
| Upstream plasma points selected for analysis |
0012 |
| Upstream field points selected for analysis |
0047 |
| Downstream plasma points selected for analysis |
0008
|
| Downstream field points selected for analysis |
0033 |
| Minimum chisq/dof for RH8,RH9,RH10 |
12.03, 28.44, 28.81 |
Event added to database
|
Sat Apr 30 21:44:28 2005
|
Event last processed
|
Wed Oct 15 15:06:33 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.010 ± 0.000
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-329.2 ± 2.0 |
-379.0 ± 4.0 |
| Vy GSE [km/s] |
-14.5 ± 2.9 |
-31.6 ± 1.4 |
| Vz GSE [km/s] |
-4.3 ± 2.4 |
-21.0 ± 4.9 |
| Wi [km/s] |
19.1 ± 1.3 |
22.1 ± 2.0 |
| We [km/s] |
604.9 ± 40.4 |
700.4 ± 62.7 |
| Ni [n/cc] |
5.8 ± 0.4 |
19.8 ± 1.3 |
| Bx GSE [nT] |
4.8 ± 0.1 |
6.3 ± 0.6 |
| By GSE [nT] |
-4.0 ± 0.1 |
-10.5 ± 0.2 |
| Bz GSE [nT] |
-0.8 ± 0.1 |
-3.0 ± 0.6 |
Plasma Beta
|
0.121 ± 0.127
|
0.137 ± 0.139
|
Sound Speed [km/s]
|
24.68 ± 1.63
|
28.49 ± 2.46
|
Alfven Speed [km/s]
|
55.39 ± 2.31
|
59.77 ± 2.29
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.973 ± 0.020 |
-0.141 ± 0.094 |
-0.182 ± 0.180 |
-10.46 ± 4.69 |
188.22 ± 5.56 |
| VC |
-0.904 ± 0.026 |
-0.308 ± 0.047 |
-0.295 ± 0.286 |
-17.18 ± 4.24 |
198.83 ± 2.97 |
| MX1 |
-0.965 ± 0.020 |
-0.126 ± 0.081 |
-0.230 ± 0.225 |
-13.27 ± 4.27 |
187.47 ± 4.82 |
| MX2 |
-0.964 ± 0.021 |
-0.126 ± 0.080 |
-0.232 ± 0.228 |
-13.44 ± 4.52 |
187.43 ± 4.78 |
| MX3 |
-0.964 ± 0.022 |
-0.125 ± 0.080 |
-0.235 ± 0.230 |
-13.58 ± 4.76 |
187.39 ± 4.75 |
| RH08 |
-0.981 ± 0.002 |
-0.182 ± 0.009 |
-0.061 ± 0.061 |
-3.52 ± 0.91 |
190.53 ± 0.55 |
| RH09 |
-0.981 ± 0.014 |
-0.147 ± 0.070 |
-0.128 ± 0.128 |
-7.38 ± 4.01 |
188.52 ± 4.07 |
| RH10 |
-0.981 ± 0.014 |
-0.147 ± 0.070 |
-0.128 ± 0.128 |
-7.38 ± 4.01 |
188.52 ± 4.07 |
| Average |
-0.964 |
-0.163 |
-0.187 |
-10.777 |
189.614 |
| Median |
-0.965 |
-0.141 |
-0.182 |
-10.464 |
188.524 |
| Deviation |
0.025 |
0.062 |
0.076 |
4.438 |
3.863 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
50.8 ± 1.4 |
398.3 ± 0.6 |
3.51 ± 0.33 |
| VC |
62.7 ± 1.3 |
380.0 ± 0.7 |
3.51 ± 0.33 |
| MX1 |
51.1 ± 1.3 |
395.8 ± 0.6 |
3.51 ± 0.33 |
| MX2 |
51.1 ± 1.3 |
395.6 ± 0.6 |
3.51 ± 0.33 |
| MX3 |
51.1 ± 1.3 |
395.4 ± 0.6 |
3.51 ± 0.33 |
| RH08 |
51.2 ± 1.4 |
400.1 ± 0.6 |
3.51 ± 0.33 |
| RH09 |
50.2 ± 1.4 |
400.0 ± 0.6 |
3.51 ± 0.33 |
| RH10 |
50.2 ± 1.4 |
400.0 ± 5.8 |
3.51 ± 0.33 |
| Average |
52.3 |
395.6 |
3.51 |
| Median |
51.1 |
398.3 |
3.51 |
| Deviation |
4.2 |
6.7 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
74.9 ± 2.4 |
14.7 ± 0.8 |
35.0 ± 1.5 |
58.9 ± 1.9 |
5.13 ± 0.43 |
1.27 ± 0.05 |
| VC |
76.3 ± 2.7 |
10.5 ± 0.6 |
25.4 ± 1.1 |
59.8 ± 1.9 |
7.31 ± 0.61 |
1.28 ± 0.05 |
| MX1 |
75.0 ± 2.5 |
14.6 ± 0.8 |
34.8 ± 1.5 |
58.9 ± 1.9 |
5.17 ± 0.43 |
1.28 ± 0.05 |
| MX2 |
75.1 ± 2.5 |
14.6 ± 0.8 |
34.8 ± 1.5 |
58.9 ± 1.9 |
5.17 ± 0.43 |
1.28 ± 0.05 |
| MX3 |
75.1 ± 2.5 |
14.6 ± 0.8 |
34.8 ± 1.5 |
58.9 ± 1.9 |
5.18 ± 0.43 |
1.28 ± 0.05 |
| RH8 |
74.0 ± 2.3 |
14.5 ± 0.8 |
34.7 ± 1.4 |
58.9 ± 1.9 |
5.11 ± 0.42 |
1.26 ± 0.05 |
| RH9 |
74.3 ± 2.4 |
14.9 ± 0.8 |
35.5 ± 1.5 |
58.8 ± 1.9 |
5.02 ± 0.42 |
1.26 ± 0.05 |
| RH10 |
74.3 ± 2.4 |
14.9 ± 0.8 |
35.5 ± 1.5 |
58.8 ± 1.9 |
5.02 ± 0.42 |
1.26 ± 0.05 |
| Average |
74.9 |
14.1 |
33.8 |
59.0 |
5.4 |
1.3 |
| Median |
75.0 |
14.6 |
34.8 |
58.9 |
5.2 |
1.3 |
| Deviation |
0.7 |
1.5 |
3.4 |
0.3 |
0.8 |
0.0 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
21.2 ± 4.6 |
16.8 ± 1.3 |
37.8 ± 1.4 |
64.1 ± 2.5 |
1.26 ± 0.27 |
0.33 ± 0.07 |
| VC |
21.3 ± 5.0 |
12.0 ± 0.9 |
27.4 ± 1.0 |
65.1 ± 2.6 |
1.77 ± 0.39 |
0.32 ± 0.07 |
| MX1 |
21.2 ± 4.8 |
16.7 ± 1.3 |
37.6 ± 1.4 |
64.1 ± 2.5 |
1.27 ± 0.27 |
0.33 ± 0.07 |
| MX2 |
21.2 ± 4.8 |
16.7 ± 1.3 |
37.6 ± 1.4 |
64.1 ± 2.5 |
1.27 ± 0.27 |
0.33 ± 0.07 |
| MX3 |
21.2 ± 4.8 |
16.7 ± 1.3 |
37.5 ± 1.4 |
64.1 ± 2.5 |
1.27 ± 0.27 |
0.33 ± 0.07 |
| RH8 |
21.1 ± 4.2 |
16.6 ± 1.3 |
37.5 ± 1.4 |
64.1 ± 2.5 |
1.27 ± 0.25 |
0.33 ± 0.06 |
| RH9 |
20.9 ± 4.5 |
17.0 ± 1.3 |
38.3 ± 1.5 |
64.0 ± 2.5 |
1.23 ± 0.26 |
0.33 ± 0.06 |
| RH10 |
20.9 ± 4.5 |
17.0 ± 1.3 |
38.3 ± 1.5 |
64.0 ± 2.5 |
1.23 ± 0.26 |
0.33 ± 0.06 |
| Average |
21.1 |
16.2 |
36.5 |
64.2 |
1.3 |
0.3 |
| Median |
21.2 |
16.7 |
37.6 |
64.1 |
1.3 |
0.3 |
| Deviation |
0.1 |
1.7 |
3.7 |
0.4 |
0.2 |
0.0 |
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)
| 
