Database: Ace Shock Analysis
Event ID: 20140500307
Observation time: 02/19/2014 50.13053 0307 [UT]
|
|
General
Information (About, Top)
| Year |
2014 |
| Fractional day of year |
50.130533 |
| Arrival time of shock [seconds of day] |
11278.1 ± 60.0 |
| Shock type |
FF |
| Electron data availability |
0 |
| X GSE location of spacecraft [Re] |
231.405 |
| Y GSE location of spacecraft [Re] |
-39.884 |
| Z GSE location of spacecraft [Re] |
-10.341 |
| Upstream plasma points selected for analysis |
0006 |
| Upstream field points selected for analysis |
0006 |
| Downstream plasma points selected for analysis |
0009
|
| Downstream field points selected for analysis |
0010 |
| Minimum chisq/dof for RH8,RH9,RH10 |
17.61, 28.00, 29.06 |
Event added to database
|
Fri Oct 10 15:10:42 2014
|
Event last processed
|
Tue Oct 14 16:25:20 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
40.051 ± 3.909
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-382.7 ± 3.4 |
-470.5 ± 2.9 |
| Vy GSE [km/s] |
-15.6 ± 3.2 |
-23.0 ± 6.6 |
| Vz GSE [km/s] |
13.9 ± 4.0 |
-16.4 ± 1.4 |
| Wi [km/s] |
17.3 ± 0.8 |
27.2 ± 1.0 |
| We [km/s] |
548.2 ± 26.7 |
861.5 ± 31.7 |
| Ni [n/cc] |
1.8 ± 0.1 |
3.5 ± 0.3 |
| Bx GSE [nT] |
2.8 ± 0.2 |
5.5 ± 0.4 |
| By GSE [nT] |
-4.2 ± 0.2 |
-4.3 ± 1.0 |
| Bz GSE [nT] |
-6.7 ± 0.1 |
-13.6 ± 0.5 |
Plasma Beta
|
0.016 ± 0.016
|
0.023 ± 0.022
|
Sound Speed [km/s]
|
22.38 ± 1.09
|
35.17 ± 1.29
|
Alfven Speed [km/s]
|
136.99 ± 4.88
|
180.30 ± 8.54
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-1.000 ± 0.011 |
0.007 ± 1.447 |
0.028 ± 0.028 |
1.59 ± 5.44 |
179.58 ± 82.95 |
| VC |
-0.943 ± 0.016 |
-0.080 ± 0.076 |
-0.324 ± 0.312 |
-18.93 ± 2.58 |
184.85 ± 4.63 |
| MX1 |
-0.928 ± 0.021 |
-0.103 ± 0.107 |
-0.358 ± 0.341 |
-20.95 ± 2.69 |
186.36 ± 6.60 |
| MX2 |
-0.928 ± 0.020 |
-0.095 ± 0.094 |
-0.359 ± 0.343 |
-21.04 ± 2.76 |
185.85 ± 5.80 |
| MX3 |
-0.929 ± 0.019 |
-0.087 ± 0.083 |
-0.360 ± 0.344 |
-21.12 ± 2.83 |
185.34 ± 5.11 |
| RH08 |
-0.936 ± 0.003 |
-0.124 ± 0.014 |
-0.330 ± 0.317 |
-19.25 ± 0.37 |
187.52 ± 0.84 |
| RH09 |
-0.936 ± 0.025 |
-0.124 ± 0.070 |
-0.330 ± 0.317 |
-19.25 ± 4.00 |
187.52 ± 4.29 |
| RH10 |
-0.936 ± 0.025 |
-0.124 ± 0.070 |
-0.330 ± 0.317 |
-19.25 ± 4.00 |
187.52 ± 4.29 |
| Average |
-0.942 |
-0.091 |
-0.295 |
-17.273 |
185.568 |
| Median |
-0.936 |
-0.095 |
-0.330 |
-19.245 |
186.360 |
| Deviation |
0.024 |
0.043 |
0.131 |
7.679 |
2.635 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
69.1 ± 1.3 |
564.5 ± 3.6 |
1.87 ± 0.19 |
| VC |
89.3 ± 1.3 |
552.2 ± 3.9 |
1.87 ± 0.19 |
| MX1 |
88.2 ± 1.3 |
546.4 ± 3.9 |
1.87 ± 0.19 |
| MX2 |
88.4 ± 1.3 |
546.4 ± 3.9 |
1.87 ± 0.19 |
| MX3 |
88.6 ± 1.3 |
546.4 ± 3.9 |
1.87 ± 0.19 |
| RH08 |
89.1 ± 1.3 |
550.1 ± 3.8 |
1.87 ± 0.19 |
| RH09 |
89.1 ± 1.3 |
550.1 ± 3.8 |
1.87 ± 0.19 |
| RH10 |
89.1 ± 1.3 |
550.1 ± 28.0 |
1.87 ± 0.19 |
| Average |
86.4 |
550.8 |
1.87 |
| Median |
89.1 |
550.1 |
1.87 |
| Deviation |
7.0 |
6.0 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
181.7 ± 3.4 |
7.9 ± 0.4 |
48.8 ± 1.7 |
138.6 ± 4.8 |
23.10 ± 1.14 |
1.31 ± 0.04 |
| VC |
194.8 ± 2.9 |
0.3 ± 0.0 |
1.7 ± 0.1 |
138.8 ± 4.8 |
724.27 ± 38.26 |
1.40 ± 0.04 |
| MX1 |
194.5 ± 2.8 |
0.7 ± 0.0 |
4.2 ± 0.2 |
138.8 ± 4.8 |
286.51 ± 15.21 |
1.40 ± 0.04 |
| MX2 |
194.5 ± 2.8 |
0.6 ± 0.0 |
3.8 ± 0.1 |
138.8 ± 4.8 |
318.83 ± 16.95 |
1.40 ± 0.04 |
| MX3 |
194.5 ± 2.8 |
0.5 ± 0.0 |
3.4 ± 0.1 |
138.8 ± 4.8 |
360.04 ± 19.18 |
1.40 ± 0.04 |
| RH8 |
194.5 ± 2.9 |
0.4 ± 0.0 |
2.2 ± 0.1 |
138.8 ± 4.8 |
550.88 ± 28.92 |
1.40 ± 0.04 |
| RH9 |
194.5 ± 2.9 |
0.4 ± 0.0 |
2.2 ± 0.1 |
138.8 ± 4.8 |
550.88 ± 28.92 |
1.40 ± 0.04 |
| RH10 |
194.5 ± 2.9 |
0.4 ± 0.0 |
2.2 ± 0.1 |
138.8 ± 4.8 |
550.88 ± 28.92 |
1.40 ± 0.04 |
| Average |
192.9 |
1.4 |
8.6 |
138.8 |
420.7 |
1.4 |
| Median |
194.5 |
0.5 |
3.4 |
138.8 |
550.9 |
1.4 |
| Deviation |
4.5 |
2.6 |
16.3 |
0.1 |
218.2 |
0.0 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
94.8 ± 2.9 |
12.3 ± 0.4 |
64.2 ± 3.0 |
183.3 ± 8.5 |
7.70 ± 0.37 |
0.52 ± 0.03 |
| VC |
101.6 ± 2.8 |
0.4 ± 0.0 |
2.2 ± 0.1 |
183.7 ± 8.5 |
241.52 ± 11.24 |
0.55 ± 0.03 |
| MX1 |
101.4 ± 2.7 |
1.1 ± 0.0 |
5.6 ± 0.3 |
183.7 ± 8.5 |
95.50 ± 4.45 |
0.55 ± 0.03 |
| MX2 |
101.4 ± 2.7 |
1.0 ± 0.0 |
5.0 ± 0.2 |
183.7 ± 8.5 |
106.28 ± 4.95 |
0.55 ± 0.03 |
| MX3 |
101.5 ± 2.8 |
0.8 ± 0.0 |
4.4 ± 0.2 |
183.7 ± 8.5 |
120.02 ± 5.58 |
0.55 ± 0.03 |
| RH8 |
101.4 ± 2.7 |
0.6 ± 0.0 |
2.9 ± 0.1 |
183.7 ± 8.5 |
183.64 ± 8.62 |
0.55 ± 0.03 |
| RH9 |
101.4 ± 2.7 |
0.6 ± 0.0 |
2.9 ± 0.1 |
183.7 ± 8.5 |
183.64 ± 8.62 |
0.55 ± 0.03 |
| RH10 |
101.4 ± 2.7 |
0.6 ± 0.0 |
2.9 ± 0.1 |
183.7 ± 8.5 |
183.64 ± 8.62 |
0.55 ± 0.03 |
| Average |
100.6 |
2.2 |
11.3 |
183.6 |
140.2 |
0.5 |
| Median |
101.4 |
0.8 |
4.4 |
183.7 |
183.6 |
0.6 |
| Deviation |
2.3 |
4.1 |
21.4 |
0.1 |
72.7 |
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)
| 
