Database: Ace Shock Analysis
Event ID: 20041982106
Observation time: 07/16/2004 198.87969 2106 [UT]
|
|
General
Information (About, Top)
| Year |
2004 |
| Fractional day of year |
198.879685 |
| Arrival time of shock [seconds of day] |
76004.8 ± 10.0 |
| Shock type |
FF |
| Electron data availability |
0 |
| X GSE location of spacecraft [Re] |
236.856 |
| Y GSE location of spacecraft [Re] |
-41.489 |
| Z GSE location of spacecraft [Re] |
22.875 |
| Upstream plasma points selected for analysis |
0005 |
| Upstream field points selected for analysis |
0305 |
| Downstream plasma points selected for analysis |
0003
|
| Downstream field points selected for analysis |
0212 |
| Minimum chisq/dof for RH8,RH9,RH10 |
2.69, 5.65, 6.80 |
Event added to database
|
Wed Oct 15 10:37:20 2014
|
Event last processed
|
Wed Oct 15 11:28:19 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
54.046 ± 0.505
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-391.0 ± 3.0 |
-433.3 ± 0.7 |
| Vy GSE [km/s] |
-18.3 ± 2.0 |
-13.9 ± 9.6 |
| Vz GSE [km/s] |
8.3 ± 1.8 |
7.8 ± 7.8 |
| Wi [km/s] |
24.2 ± 0.3 |
30.7 ± 0.7 |
| We [km/s] |
765.6 ± 9.1 |
970.4 ± 23.1 |
| Ni [n/cc] |
7.6 ± 0.4 |
15.0 ± 0.6 |
| Bx GSE [nT] |
0.5 ± 0.4 |
0.6 ± 0.3 |
| By GSE [nT] |
5.0 ± 0.2 |
5.8 ± 2.7 |
| Bz GSE [nT] |
-4.6 ± 0.1 |
-9.9 ± 1.8 |
Plasma Beta
|
0.201 ± 0.196
|
0.214 ± 0.221
|
Sound Speed [km/s]
|
31.25 ± 0.37
|
39.62 ± 0.94
|
Alfven Speed [km/s]
|
54.05 ± 1.26
|
66.36 ± 0.96
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.845 ± 0.571 |
-0.533 ± 0.906 |
0.032 ± 0.032 |
1.82 ± 12.04 |
212.24 ± 61.38 |
| VC |
-0.995 ± 0.020 |
0.103 ± 0.194 |
-0.011 ± 0.011 |
-0.65 ± 8.94 |
174.09 ± 11.17 |
| MX1 |
-0.973 ± 0.074 |
0.203 ± 0.346 |
-0.109 ± 0.108 |
-6.25 ± 7.06 |
168.19 ± 20.40 |
| MX2 |
-0.988 ± 0.031 |
0.120 ± 0.243 |
-0.094 ± 0.094 |
-5.40 ± 6.55 |
173.06 ± 14.07 |
| MX3 |
-0.994 ± 0.017 |
0.074 ± 0.188 |
-0.085 ± 0.085 |
-4.88 ± 6.35 |
175.75 ± 10.84 |
| RH08 |
-0.997 ± 0.004 |
0.079 ± 0.054 |
0.006 ± 0.006 |
0.32 ± 2.34 |
175.49 ± 3.12 |
| RH09 |
-0.995 ± 0.007 |
0.096 ± 0.068 |
0.006 ± 0.006 |
0.32 ± 4.05 |
174.48 ± 3.94 |
| RH10 |
-0.995 ± 0.007 |
0.096 ± 0.068 |
0.006 ± 0.006 |
0.32 ± 4.05 |
174.48 ± 3.94 |
| Average |
-0.973 |
0.030 |
-0.031 |
-1.799 |
178.472 |
| Median |
-0.994 |
0.096 |
0.006 |
0.320 |
174.485 |
| Deviation |
0.052 |
0.231 |
0.055 |
3.163 |
13.848 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
61.3 ± 3.2 |
406.2 ± 3.0 |
2.01 ± 0.14 |
| VC |
89.7 ± 3.0 |
470.8 ± 1.6 |
2.01 ± 0.14 |
| MX1 |
81.6 ± 3.0 |
459.3 ± 1.7 |
2.01 ± 0.14 |
| MX2 |
85.8 ± 3.1 |
467.6 ± 1.7 |
2.01 ± 0.14 |
| MX3 |
88.1 ± 3.1 |
471.5 ± 1.8 |
2.01 ± 0.14 |
| RH08 |
88.6 ± 3.0 |
472.3 ± 1.6 |
2.01 ± 0.14 |
| RH09 |
89.4 ± 3.0 |
471.4 ± 1.6 |
2.01 ± 0.14 |
| RH10 |
89.4 ± 3.0 |
471.4 ± 6.0 |
2.01 ± 0.14 |
| Average |
84.2 |
461.3 |
2.01 |
| Median |
88.6 |
471.4 |
2.01 |
| Deviation |
9.7 |
22.7 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
65.7 ± 3.0 |
13.3 ± 0.1 |
26.0 ± 0.6 |
61.0 ± 1.1 |
4.94 ± 0.26 |
1.08 ± 0.07 |
| VC |
83.9 ± 3.0 |
0.1 ± 0.0 |
0.3 ± 0.0 |
62.4 ± 1.1 |
587.96 ± 25.59 |
1.34 ± 0.07 |
| MX1 |
83.4 ± 3.0 |
4.0 ± 0.0 |
7.9 ± 0.2 |
62.3 ± 1.1 |
21.04 ± 0.91 |
1.34 ± 0.07 |
| MX2 |
84.2 ± 3.0 |
2.0 ± 0.0 |
4.0 ± 0.1 |
62.4 ± 1.1 |
42.02 ± 1.84 |
1.35 ± 0.07 |
| MX3 |
85.0 ± 3.1 |
0.9 ± 0.0 |
1.8 ± 0.0 |
62.4 ± 1.1 |
94.25 ± 4.13 |
1.36 ± 0.07 |
| RH8 |
83.9 ± 3.0 |
0.7 ± 0.0 |
1.3 ± 0.0 |
62.4 ± 1.1 |
128.17 ± 5.58 |
1.35 ± 0.07 |
| RH9 |
83.9 ± 3.0 |
0.3 ± 0.0 |
0.6 ± 0.0 |
62.4 ± 1.1 |
275.69 ± 11.97 |
1.34 ± 0.07 |
| RH10 |
83.9 ± 3.0 |
0.3 ± 0.0 |
0.6 ± 0.0 |
62.4 ± 1.1 |
275.69 ± 11.97 |
1.34 ± 0.07 |
| Average |
81.7 |
2.7 |
5.3 |
62.2 |
178.7 |
1.3 |
| Median |
83.9 |
0.9 |
1.8 |
62.4 |
128.2 |
1.3 |
| Deviation |
6.5 |
4.5 |
8.7 |
0.5 |
196.3 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
32.3 ± 5.4 |
16.7 ± 0.3 |
31.9 ± 0.5 |
75.5 ± 0.7 |
1.93 ± 0.29 |
0.43 ± 0.07 |
| VC |
41.4 ± 0.6 |
0.2 ± 0.0 |
0.3 ± 0.0 |
77.3 ± 0.7 |
230.65 ± 6.66 |
0.54 ± 0.01 |
| MX1 |
41.3 ± 0.7 |
5.0 ± 0.1 |
9.7 ± 0.1 |
77.1 ± 0.7 |
8.29 ± 0.28 |
0.54 ± 0.01 |
| MX2 |
41.8 ± 0.1 |
2.5 ± 0.0 |
4.9 ± 0.1 |
77.2 ± 0.7 |
16.61 ± 0.29 |
0.54 ± 0.00 |
| MX3 |
42.6 ± 0.4 |
1.1 ± 0.0 |
2.2 ± 0.0 |
77.3 ± 0.7 |
37.60 ± 0.34 |
0.55 ± 0.00 |
| RH8 |
41.4 ± 0.6 |
0.8 ± 0.0 |
1.6 ± 0.0 |
77.3 ± 0.7 |
50.34 ± 1.36 |
0.54 ± 0.01 |
| RH9 |
41.4 ± 0.7 |
0.4 ± 0.0 |
0.7 ± 0.0 |
77.3 ± 0.7 |
108.23 ± 3.31 |
0.54 ± 0.01 |
| RH10 |
41.4 ± 0.7 |
0.4 ± 0.0 |
0.7 ± 0.0 |
77.3 ± 0.7 |
108.23 ± 3.31 |
0.54 ± 0.01 |
| Average |
40.5 |
3.4 |
6.5 |
77.0 |
70.2 |
0.5 |
| Median |
41.4 |
1.1 |
2.2 |
77.3 |
50.3 |
0.5 |
| Deviation |
3.3 |
5.6 |
10.7 |
0.6 |
77.0 |
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)
| 
