Database: Ace Shock Analysis
Event ID: 20140480509
Observation time: 02/17/2014 48.21498 0509 [UT]
|
|
General
Information (About, Top)
| Year |
2014 |
| Fractional day of year |
48.214977 |
| Arrival time of shock [seconds of day] |
18574.0 ± 60.0 |
| Shock type |
FR |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
232.053 |
| Y GSE location of spacecraft [Re] |
-39.108 |
| Z GSE location of spacecraft [Re] |
-8.946 |
| Upstream plasma points selected for analysis |
0006 |
| Upstream field points selected for analysis |
0006 |
| Downstream plasma points selected for analysis |
0008
|
| Downstream field points selected for analysis |
0008 |
| Minimum chisq/dof for RH8,RH9,RH10 |
23.71, 29.74, 31.01 |
Event added to database
|
Fri Oct 10 15:09:23 2014
|
Event last processed
|
Tue Oct 14 16:22:53 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
87.410 ± 9.794
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-375.1 ± 1.4 |
-408.9 ± 1.7 |
| Vy GSE [km/s] |
-38.2 ± 1.4 |
-31.2 ± 1.2 |
| Vz GSE [km/s] |
-3.5 ± 2.0 |
24.0 ± 1.6 |
| Wi [km/s] |
21.1 ± 1.2 |
18.4 ± 0.9 |
| We [km/s] |
667.2 ± 38.5 |
581.8 ± 28.6 |
| Ni [n/cc] |
3.1 ± 0.3 |
1.8 ± 0.1 |
| Bx GSE [nT] |
3.7 ± 0.1 |
1.9 ± 0.1 |
| By GSE [nT] |
-3.6 ± 0.5 |
-3.1 ± 0.1 |
| Bz GSE [nT] |
4.9 ± 0.2 |
2.3 ± 0.2 |
Plasma Beta
|
0.057 ± 0.058
|
0.071 ± 0.075
|
Sound Speed [km/s]
|
27.24 ± 1.57
|
23.75 ± 1.17
|
Alfven Speed [km/s]
|
88.90 ± 4.47
|
69.19 ± 2.73
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.550 ± 0.948 |
-0.826 ± 0.631 |
-0.127 ± 0.126 |
-7.28 ± 9.82 |
236.36 ± 65.79 |
| VC |
-0.767 ± 0.029 |
0.161 ± 0.045 |
0.621 ± 0.525 |
38.38 ± 2.60 |
168.15 ± 3.35 |
| MX1 |
-0.798 ± 0.047 |
0.188 ± 0.063 |
0.573 ± 0.500 |
34.97 ± 4.57 |
166.74 ± 4.44 |
| MX2 |
-0.793 ± 0.051 |
0.212 ± 0.083 |
0.571 ± 0.499 |
34.80 ± 4.76 |
165.02 ± 5.93 |
| MX3 |
-0.802 ± 0.045 |
0.166 ± 0.048 |
0.575 ± 0.501 |
35.07 ± 4.47 |
168.33 ± 3.39 |
| RH08 |
-0.893 ± 0.004 |
0.166 ± 0.014 |
0.419 ± 0.393 |
24.77 ± 0.39 |
169.47 ± 0.90 |
| RH09 |
-0.895 ± 0.030 |
0.150 ± 0.069 |
0.419 ± 0.393 |
24.77 ± 3.77 |
170.47 ± 4.42 |
| RH10 |
-0.905 ± 0.029 |
0.120 ± 0.069 |
0.408 ± 0.384 |
24.07 ± 3.96 |
172.48 ± 4.37 |
| Average |
-0.800 |
0.042 |
0.432 |
26.193 |
177.127 |
| Median |
-0.798 |
0.166 |
0.571 |
34.800 |
169.471 |
| Deviation |
0.115 |
0.352 |
0.242 |
14.676 |
24.040 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
87.8 ± 3.6 |
224.8 ± 0.8 |
0.60 ± 0.09 |
| VC |
87.2 ± 1.3 |
216.9 ± 2.6 |
0.60 ± 0.09 |
| MX1 |
83.6 ± 1.3 |
227.6 ± 2.6 |
0.60 ± 0.09 |
| MX2 |
83.0 ± 1.3 |
225.0 ± 2.6 |
0.60 ± 0.09 |
| MX3 |
84.2 ± 1.2 |
229.8 ± 2.6 |
0.60 ± 0.09 |
| RH08 |
75.2 ± 0.9 |
265.9 ± 2.4 |
0.60 ± 0.09 |
| RH09 |
75.5 ± 0.8 |
267.6 ± 2.4 |
0.60 ± 0.09 |
| RH10 |
75.7 ± 0.7 |
272.8 ± 16.5 |
0.60 ± 0.09 |
| Average |
81.5 |
241.3 |
0.60 |
| Median |
83.6 |
229.8 |
0.60 |
| Deviation |
5.3 |
23.1 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
-13.3 ± 1.9 |
1.0 ± 0.0 |
3.4 ± 0.2 |
93.0 ± 3.9 |
-13.51 ± 2.06 |
-0.14 ± 0.02 |
| VC |
-62.5 ± 1.3 |
1.3 ± 0.1 |
4.3 ± 0.2 |
93.0 ± 3.9 |
-49.63 ± 3.13 |
-0.67 ± 0.03 |
| MX1 |
-62.4 ± 1.3 |
2.9 ± 0.1 |
9.9 ± 0.5 |
93.0 ± 3.9 |
-21.67 ± 1.37 |
-0.67 ± 0.03 |
| MX2 |
-62.4 ± 1.3 |
3.2 ± 0.2 |
10.9 ± 0.5 |
93.0 ± 3.9 |
-19.65 ± 1.24 |
-0.67 ± 0.03 |
| MX3 |
-62.5 ± 1.3 |
2.6 ± 0.1 |
9.0 ± 0.5 |
93.0 ± 3.9 |
-23.87 ± 1.51 |
-0.67 ± 0.03 |
| RH8 |
-61.1 ± 1.2 |
6.7 ± 0.3 |
22.8 ± 1.1 |
92.8 ± 4.0 |
-9.18 ± 0.59 |
-0.66 ± 0.03 |
| RH9 |
-61.1 ± 1.2 |
6.5 ± 0.3 |
22.2 ± 1.1 |
92.8 ± 4.0 |
-9.41 ± 0.60 |
-0.66 ± 0.03 |
| RH10 |
-60.7 ± 1.2 |
6.4 ± 0.3 |
22.0 ± 1.1 |
92.8 ± 4.0 |
-9.45 ± 0.61 |
-0.66 ± 0.02 |
| Average |
-55.8 |
3.8 |
13.0 |
92.9 |
-19.5 |
-0.6 |
| Median |
-61.1 |
3.2 |
10.9 |
93.0 |
-13.5 |
-0.7 |
| Deviation |
17.2 |
2.4 |
8.1 |
0.1 |
13.5 |
0.2 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
-22.7 ± 1.7 |
0.9 ± 0.0 |
2.6 ± 0.1 |
73.2 ± 2.7 |
-26.63 ± 3.20 |
-0.31 ± 0.03 |
| VC |
-106.7 ± 2.0 |
1.1 ± 0.0 |
3.4 ± 0.1 |
73.2 ± 2.7 |
-98.12 ± 6.50 |
-1.46 ± 0.07 |
| MX1 |
-106.4 ± 1.9 |
2.5 ± 0.1 |
7.7 ± 0.3 |
73.1 ± 2.7 |
-42.84 ± 2.82 |
-1.46 ± 0.07 |
| MX2 |
-106.5 ± 1.9 |
2.7 ± 0.1 |
8.5 ± 0.3 |
73.1 ± 2.7 |
-38.81 ± 2.54 |
-1.46 ± 0.07 |
| MX3 |
-106.6 ± 2.0 |
2.3 ± 0.1 |
7.0 ± 0.3 |
73.1 ± 2.7 |
-47.17 ± 3.12 |
-1.46 ± 0.07 |
| RH8 |
-104.0 ± 1.9 |
5.8 ± 0.3 |
17.7 ± 0.7 |
72.9 ± 2.7 |
-18.09 ± 1.19 |
-1.43 ± 0.07 |
| RH9 |
-104.0 ± 1.9 |
5.6 ± 0.3 |
17.3 ± 0.7 |
72.9 ± 2.7 |
-18.54 ± 1.23 |
-1.43 ± 0.07 |
| RH10 |
-103.4 ± 1.9 |
5.6 ± 0.3 |
17.1 ± 0.7 |
73.0 ± 2.7 |
-18.64 ± 1.24 |
-1.42 ± 0.07 |
| Average |
-95.0 |
3.3 |
10.1 |
73.1 |
-38.6 |
-1.3 |
| Median |
-104.0 |
2.7 |
8.5 |
73.1 |
-26.6 |
-1.4 |
| Deviation |
29.3 |
2.1 |
6.3 |
0.1 |
26.7 |
0.4 |
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)
| 
