Database: Ace Shock Analysis
Event ID: 20120020058
Observation time: 01/02/2012 2.04070 0058 [UT]
|
|
General
Information (About, Top)
| Year |
2012 |
| Fractional day of year |
2.040698 |
| Arrival time of shock [seconds of day] |
3516.3 ± 20.0 |
| Shock type |
FF |
| Electron data availability |
0 |
| X GSE location of spacecraft [Re] |
231.051 |
| Y GSE location of spacecraft [Re] |
40.361 |
| Z GSE location of spacecraft [Re] |
21.686 |
| Upstream plasma points selected for analysis |
0006 |
| Upstream field points selected for analysis |
0415 |
| Downstream plasma points selected for analysis |
0003
|
| Downstream field points selected for analysis |
0215 |
| Minimum chisq/dof for RH8,RH9,RH10 |
29.62, 54.43, 62.80 |
Event added to database
|
Tue Oct 14 16:03:46 2014
|
Event last processed
|
Tue Oct 14 16:48:10 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
57.199 ± 16.943
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-357.0 ± 1.6 |
-377.9 ± 0.6 |
| Vy GSE [km/s] |
-15.0 ± 0.9 |
-15.0 ± 1.9 |
| Vz GSE [km/s] |
-23.7 ± 1.7 |
-7.7 ± 3.4 |
| Wi [km/s] |
22.8 ± 0.6 |
30.2 ± 0.7 |
| We [km/s] |
719.4 ± 18.8 |
953.4 ± 22.2 |
| Ni [n/cc] |
5.0 ± 0.2 |
7.4 ± 0.1 |
| Bx GSE [nT] |
1.5 ± 0.1 |
2.9 ± 0.4 |
| By GSE [nT] |
2.0 ± 0.1 |
2.5 ± 0.5 |
| Bz GSE [nT] |
2.6 ± 0.0 |
4.0 ± 0.0 |
Plasma Beta
|
0.410 ± 0.419
|
0.463 ± 0.474
|
Sound Speed [km/s]
|
29.37 ± 0.77
|
38.92 ± 0.91
|
Alfven Speed [km/s]
|
35.53 ± 0.74
|
44.35 ± 0.33
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.560 ± 0.240 |
0.780 ± 0.175 |
0.280 ± 0.273 |
16.29 ± 9.07 |
125.68 ± 17.53 |
| VC |
-0.799 ± 0.055 |
0.002 ± 0.070 |
0.601 ± 0.515 |
36.95 ± 5.24 |
179.87 ± 5.05 |
| MX1 |
-0.721 ± 0.085 |
0.087 ± 0.075 |
0.687 ± 0.550 |
43.39 ± 7.09 |
173.10 ± 5.87 |
| MX2 |
-0.722 ± 0.085 |
0.058 ± 0.065 |
0.689 ± 0.551 |
43.58 ± 7.09 |
175.43 ± 5.10 |
| MX3 |
-0.723 ± 0.083 |
0.018 ± 0.078 |
0.691 ± 0.551 |
43.72 ± 6.85 |
178.55 ± 6.21 |
| RH08 |
-0.052 ± 0.030 |
-0.921 ± 0.011 |
0.385 ± 0.365 |
22.67 ± 1.58 |
266.74 ± 1.87 |
| RH09 |
-0.743 ± 0.047 |
0.279 ± 0.067 |
0.609 ± 0.519 |
37.51 ± 4.02 |
159.44 ± 5.06 |
| RH10 |
-0.755 ± 0.046 |
0.314 ± 0.066 |
0.575 ± 0.501 |
35.13 ± 3.99 |
157.44 ± 4.90 |
| Average |
-0.634 |
0.077 |
0.565 |
34.905 |
177.031 |
| Median |
-0.722 |
0.087 |
0.609 |
37.513 |
175.429 |
| Deviation |
0.245 |
0.478 |
0.153 |
10.228 |
40.366 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
66.1 ± 2.1 |
231.2 ± 1.3 |
1.52 ± 0.04 |
| VC |
84.3 ± 0.9 |
349.7 ± 2.4 |
1.52 ± 0.04 |
| MX1 |
76.1 ± 0.9 |
317.8 ± 2.5 |
1.52 ± 0.04 |
| MX2 |
77.0 ± 0.9 |
318.7 ± 2.5 |
1.52 ± 0.04 |
| MX3 |
78.2 ± 0.8 |
319.7 ± 2.5 |
1.52 ± 0.04 |
| RH08 |
74.8 ± 2.0 |
49.0 ± 2.0 |
1.52 ± 0.04 |
| RH09 |
73.6 ± 1.2 |
324.1 ± 2.2 |
1.52 ± 0.04 |
| RH10 |
74.1 ± 1.3 |
328.6 ± 8.9 |
1.52 ± 0.04 |
| Average |
75.5 |
279.8 |
1.52 |
| Median |
76.1 |
319.7 |
1.52 |
| Deviation |
5.1 |
99.6 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
49.7 ± 1.5 |
9.4 ± 0.2 |
14.4 ± 0.3 |
45.1 ± 0.9 |
5.31 ± 0.19 |
1.10 ± 0.04 |
| VC |
78.6 ± 2.0 |
2.2 ± 0.0 |
3.5 ± 0.1 |
46.0 ± 0.9 |
35.06 ± 1.18 |
1.71 ± 0.05 |
| MX1 |
77.9 ± 2.0 |
5.5 ± 0.1 |
8.6 ± 0.2 |
45.8 ± 0.9 |
14.19 ± 0.50 |
1.70 ± 0.05 |
| MX2 |
78.1 ± 2.0 |
5.1 ± 0.1 |
8.0 ± 0.2 |
45.8 ± 0.9 |
15.22 ± 0.53 |
1.71 ± 0.05 |
| MX3 |
78.4 ± 2.0 |
4.7 ± 0.1 |
7.3 ± 0.2 |
45.9 ± 0.9 |
16.85 ± 0.59 |
1.71 ± 0.05 |
| RH8 |
25.6 ± 1.0 |
6.0 ± 0.1 |
9.3 ± 0.2 |
45.7 ± 0.9 |
4.28 ± 0.22 |
0.56 ± 0.03 |
| RH9 |
77.6 ± 2.0 |
6.5 ± 0.1 |
10.1 ± 0.2 |
45.6 ± 0.9 |
11.99 ± 0.41 |
1.70 ± 0.05 |
| RH10 |
77.4 ± 2.0 |
6.3 ± 0.1 |
9.7 ± 0.2 |
45.7 ± 0.9 |
12.38 ± 0.41 |
1.69 ± 0.05 |
| Average |
67.9 |
5.7 |
8.9 |
45.7 |
14.4 |
1.5 |
| Median |
77.9 |
6.0 |
9.3 |
45.8 |
14.2 |
1.7 |
| Deviation |
19.8 |
2.0 |
3.0 |
0.3 |
9.5 |
0.4 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
33.5 ± 0.5 |
12.1 ± 0.1 |
18.0 ± 0.1 |
57.8 ± 0.4 |
2.77 ± 0.02 |
0.58 ± 0.01 |
| VC |
52.4 ± 2.5 |
2.9 ± 0.0 |
4.4 ± 0.0 |
58.9 ± 0.4 |
18.06 ± 0.82 |
0.89 ± 0.04 |
| MX1 |
51.8 ± 2.6 |
7.1 ± 0.1 |
10.7 ± 0.1 |
58.6 ± 0.4 |
7.31 ± 0.35 |
0.88 ± 0.04 |
| MX2 |
52.1 ± 2.7 |
6.6 ± 0.1 |
10.0 ± 0.1 |
58.6 ± 0.4 |
7.84 ± 0.38 |
0.89 ± 0.05 |
| MX3 |
52.3 ± 2.8 |
6.0 ± 0.1 |
9.1 ± 0.1 |
58.7 ± 0.4 |
8.69 ± 0.43 |
0.89 ± 0.05 |
| RH8 |
18.3 ± 3.1 |
7.7 ± 0.1 |
11.6 ± 0.1 |
58.5 ± 0.4 |
2.37 ± 0.39 |
0.31 ± 0.05 |
| RH9 |
52.3 ± 2.0 |
8.4 ± 0.1 |
12.6 ± 0.1 |
58.4 ± 0.4 |
6.26 ± 0.22 |
0.90 ± 0.03 |
| RH10 |
52.4 ± 1.9 |
8.1 ± 0.1 |
12.1 ± 0.1 |
58.5 ± 0.4 |
6.49 ± 0.21 |
0.90 ± 0.03 |
| Average |
45.6 |
7.4 |
11.1 |
58.5 |
7.5 |
0.8 |
| Median |
52.3 |
7.7 |
11.6 |
58.6 |
7.3 |
0.9 |
| Deviation |
12.8 |
2.6 |
3.8 |
0.3 |
4.8 |
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)
| 
