Database: Ace Shock Analysis
Event ID: 20123491851
Observation time: 12/14/2012 349.78554 1851 [UT]
|
|
General
Information (About, Top)
| Year |
2012 |
| Fractional day of year |
349.785539 |
| Arrival time of shock [seconds of day] |
67870.6 ± 20.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
230.179 |
| Y GSE location of spacecraft [Re] |
40.248 |
| Z GSE location of spacecraft [Re] |
22.076 |
| Upstream plasma points selected for analysis |
0004 |
| Upstream field points selected for analysis |
0354 |
| Downstream plasma points selected for analysis |
0003
|
| Downstream field points selected for analysis |
0184 |
| Minimum chisq/dof for RH8,RH9,RH10 |
15.84, 113.38, 177.67 |
Event added to database
|
Tue Oct 14 17:00:34 2014
|
Event last processed
|
Tue Oct 14 17:08:16 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
77.487 ± 1.069
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-325.6 ± 0.7 |
-344.6 ± 2.8 |
| Vy GSE [km/s] |
16.5 ± 1.7 |
22.5 ± 2.3 |
| Vz GSE [km/s] |
-14.3 ± 2.9 |
17.2 ± 8.6 |
| Wi [km/s] |
22.7 ± 0.5 |
28.8 ± 1.3 |
| We [km/s] |
719.0 ± 14.9 |
909.9 ± 41.4 |
| Ni [n/cc] |
5.6 ± 0.1 |
12.2 ± 1.3 |
| Bx GSE [nT] |
-2.0 ± 0.2 |
-3.9 ± 0.3 |
| By GSE [nT] |
5.1 ± 0.0 |
7.5 ± 0.1 |
| Bz GSE [nT] |
-0.7 ± 0.4 |
-2.8 ± 0.6 |
Plasma Beta
|
0.201 ± 0.204
|
0.272 ± 0.265
|
Sound Speed [km/s]
|
29.35 ± 0.61
|
37.15 ± 1.69
|
Alfven Speed [km/s]
|
50.77 ± 0.62
|
55.62 ± 3.41
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.954 ± 0.338 |
0.242 ± 1.257 |
0.175 ± 0.174 |
10.10 ± 38.60 |
165.77 ± 75.43 |
| VC |
-0.521 ± 0.047 |
0.159 ± 0.052 |
0.838 ± 0.542 |
56.98 ± 3.17 |
163.02 ± 5.57 |
| MX1 |
-0.552 ± 0.087 |
0.226 ± 0.126 |
0.803 ± 0.556 |
53.39 ± 5.48 |
157.74 ± 12.75 |
| MX2 |
-0.560 ± 0.088 |
0.213 ± 0.109 |
0.801 ± 0.556 |
53.22 ± 6.04 |
159.16 ± 10.70 |
| MX3 |
-0.568 ± 0.095 |
0.199 ± 0.088 |
0.798 ± 0.557 |
52.97 ± 6.90 |
160.66 ± 8.23 |
| RH08 |
-0.791 ± 0.019 |
-0.609 ± 0.025 |
-0.061 ± 0.061 |
-3.52 ± 2.22 |
217.60 ± 1.78 |
| RH09 |
-0.746 ± 0.046 |
0.033 ± 0.070 |
0.665 ± 0.543 |
41.67 ± 3.98 |
177.49 ± 5.36 |
| RH10 |
-0.757 ± 0.045 |
0.020 ± 0.071 |
0.654 ± 0.539 |
40.82 ± 3.92 |
178.50 ± 5.36 |
| Average |
-0.681 |
0.060 |
0.584 |
38.203 |
172.494 |
| Median |
-0.568 |
0.199 |
0.798 |
52.968 |
165.773 |
| Deviation |
0.154 |
0.284 |
0.338 |
22.604 |
19.879 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
57.0 ± 3.5 |
358.2 ± 1.2 |
2.17 ± 0.27 |
| VC |
77.1 ± 5.1 |
226.1 ± 2.7 |
2.17 ± 0.27 |
| MX1 |
72.5 ± 5.1 |
237.4 ± 2.7 |
2.17 ± 0.27 |
| MX2 |
73.0 ± 5.1 |
239.7 ± 2.7 |
2.17 ± 0.27 |
| MX3 |
73.5 ± 5.1 |
242.5 ± 2.7 |
2.17 ± 0.27 |
| RH08 |
74.5 ± 1.8 |
266.1 ± 0.5 |
2.17 ± 0.27 |
| RH09 |
77.8 ± 4.8 |
297.4 ± 2.3 |
2.17 ± 0.27 |
| RH10 |
78.2 ± 4.8 |
300.3 ± 7.5 |
2.17 ± 0.27 |
| Average |
72.9 |
271.0 |
2.17 |
| Median |
74.5 |
266.1 |
2.17 |
| Deviation |
6.8 |
44.9 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
46.0 ± 0.8 |
14.3 ± 0.3 |
27.7 ± 0.3 |
56.9 ± 0.8 |
3.23 ± 0.07 |
0.81 ± 0.01 |
| VC |
65.8 ± 2.5 |
5.7 ± 0.1 |
11.4 ± 0.1 |
58.4 ± 0.8 |
11.51 ± 0.32 |
1.13 ± 0.03 |
| MX1 |
65.5 ± 2.3 |
7.7 ± 0.1 |
15.3 ± 0.2 |
58.1 ± 0.8 |
8.48 ± 0.23 |
1.13 ± 0.03 |
| MX2 |
65.6 ± 2.3 |
7.5 ± 0.1 |
14.8 ± 0.2 |
58.2 ± 0.8 |
8.75 ± 0.23 |
1.13 ± 0.03 |
| MX3 |
65.6 ± 2.3 |
7.3 ± 0.1 |
14.4 ± 0.2 |
58.2 ± 0.8 |
9.04 ± 0.24 |
1.13 ± 0.03 |
| RH8 |
17.9 ± 1.3 |
6.8 ± 0.1 |
13.5 ± 0.2 |
58.2 ± 0.8 |
2.62 ± 0.22 |
0.31 ± 0.03 |
| RH9 |
63.4 ± 2.1 |
5.4 ± 0.1 |
10.8 ± 0.1 |
58.4 ± 0.8 |
11.74 ± 0.32 |
1.09 ± 0.03 |
| RH10 |
63.1 ± 2.1 |
5.2 ± 0.1 |
10.4 ± 0.1 |
58.4 ± 0.8 |
12.06 ± 0.33 |
1.08 ± 0.03 |
| Average |
56.6 |
7.5 |
14.8 |
58.1 |
8.4 |
1.0 |
| Median |
65.5 |
7.3 |
14.4 |
58.2 |
9.0 |
1.1 |
| Deviation |
17.0 |
2.9 |
5.5 |
0.5 |
3.7 |
0.3 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
20.9 ± 4.7 |
17.4 ± 0.3 |
30.3 ± 1.9 |
64.6 ± 2.0 |
1.20 ± 0.29 |
0.32 ± 0.07 |
| VC |
28.4 ± 9.0 |
6.9 ± 0.1 |
12.4 ± 0.8 |
66.6 ± 1.9 |
4.11 ± 1.34 |
0.43 ± 0.13 |
| MX1 |
28.3 ± 9.0 |
9.4 ± 0.1 |
16.8 ± 1.0 |
66.3 ± 1.9 |
3.03 ± 0.99 |
0.43 ± 0.13 |
| MX2 |
28.4 ± 9.0 |
9.1 ± 0.1 |
16.3 ± 1.0 |
66.3 ± 1.9 |
3.13 ± 1.01 |
0.43 ± 0.13 |
| MX3 |
28.4 ± 8.9 |
8.8 ± 0.1 |
15.8 ± 1.0 |
66.4 ± 1.9 |
3.23 ± 1.04 |
0.43 ± 0.13 |
| RH8 |
8.3 ± 0.3 |
8.3 ± 0.1 |
14.8 ± 0.9 |
66.4 ± 1.9 |
1.01 ± 0.05 |
0.13 ± 0.00 |
| RH9 |
28.0 ± 7.9 |
6.6 ± 0.1 |
11.8 ± 0.7 |
66.6 ± 1.9 |
4.29 ± 1.24 |
0.42 ± 0.11 |
| RH10 |
27.9 ± 7.8 |
6.3 ± 0.1 |
11.4 ± 0.7 |
66.6 ± 1.9 |
4.41 ± 1.27 |
0.42 ± 0.11 |
| Average |
24.8 |
9.1 |
16.2 |
66.2 |
3.1 |
0.4 |
| Median |
28.3 |
8.8 |
15.8 |
66.4 |
3.2 |
0.4 |
| Deviation |
7.1 |
3.5 |
6.1 |
0.7 |
1.3 |
0.1 |
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)
| 
