Database: Ace Shock Analysis
Event ID: 20000271356
Observation time: 01/27/2000 27.58102 1356 [UT]
|
|
General
Information (About, Top)
| Year |
2000 |
| Fractional day of year |
27.581019 |
| Arrival time of shock [seconds of day] |
50200.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.038 |
| Y GSE location of spacecraft [Re] |
0.002 |
| Z GSE location of spacecraft [Re] |
0.003 |
| Upstream plasma points selected for analysis |
0009 |
| Upstream field points selected for analysis |
0036 |
| Downstream plasma points selected for analysis |
0008
|
| Downstream field points selected for analysis |
0036 |
| Minimum chisq/dof for RH8,RH9,RH10 |
5.70, 6.66, 6.78 |
Event added to database
|
Sat Apr 30 21:45:36 2005
|
Event last processed
|
Wed Oct 15 15:49:46 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.010 ± 0.000
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-331.4 ± 0.6 |
-367.8 ± 1.9 |
| Vy GSE [km/s] |
-15.8 ± 1.0 |
-22.7 ± 4.9 |
| Vz GSE [km/s] |
23.9 ± 0.9 |
44.7 ± 2.8 |
| Wi [km/s] |
26.4 ± 0.5 |
35.4 ± 1.4 |
| We [km/s] |
835.8 ± 14.4 |
1118.2 ± 43.2 |
| Ni [n/cc] |
41.5 ± 1.3 |
85.9 ± 2.9 |
| Bx GSE [nT] |
12.1 ± 0.2 |
11.6 ± 0.5 |
| By GSE [nT] |
1.8 ± 0.3 |
2.8 ± 1.7 |
| Bz GSE [nT] |
7.7 ± 0.3 |
15.8 ± 0.8 |
Plasma Beta
|
0.301 ± 0.298
|
0.592 ± 0.587
|
Sound Speed [km/s]
|
34.27 ± 0.56
|
46.13 ± 1.75
|
Alfven Speed [km/s]
|
48.42 ± 1.03
|
46.46 ± 0.94
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.994 ± 0.010 |
-0.087 ± 0.100 |
-0.073 ± 0.072 |
-4.16 ± 3.27 |
185.00 ± 5.76 |
| VC |
-0.863 ± 0.030 |
-0.158 ± 0.107 |
0.480 ± 0.439 |
28.71 ± 2.74 |
190.41 ± 7.08 |
| MX1 |
-0.986 ± 0.011 |
-0.159 ± 0.063 |
-0.055 ± 0.055 |
-3.15 ± 3.17 |
189.19 ± 3.67 |
| MX2 |
-0.980 ± 0.015 |
-0.192 ± 0.073 |
-0.048 ± 0.048 |
-2.73 ± 3.22 |
191.05 ± 4.29 |
| MX3 |
-0.968 ± 0.029 |
-0.248 ± 0.114 |
-0.034 ± 0.034 |
-1.95 ± 3.62 |
194.37 ± 6.75 |
| RH08 |
-0.999 ± 0.001 |
-0.044 ± 0.019 |
-0.017 ± 0.017 |
-0.96 ± 0.34 |
182.51 ± 1.12 |
| RH09 |
-0.999 ± 0.002 |
-0.026 ± 0.069 |
-0.028 ± 0.028 |
-1.60 ± 2.02 |
181.50 ± 3.94 |
| RH10 |
-0.999 ± 0.002 |
-0.026 ± 0.070 |
-0.028 ± 0.028 |
-1.60 ± 2.19 |
181.50 ± 4.02 |
| Average |
-0.973 |
-0.118 |
0.025 |
1.570 |
186.942 |
| Median |
-0.986 |
-0.087 |
-0.028 |
-1.601 |
189.191 |
| Deviation |
0.046 |
0.084 |
0.185 |
11.013 |
4.952 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
28.3 ± 1.2 |
397.8 ± 0.6 |
2.06 ± 0.13 |
| VC |
60.9 ± 1.1 |
382.2 ± 0.9 |
2.06 ± 0.13 |
| MX1 |
29.1 ± 1.1 |
398.0 ± 0.7 |
2.06 ± 0.13 |
| MX2 |
29.6 ± 1.1 |
397.1 ± 0.7 |
2.06 ± 0.13 |
| MX3 |
30.8 ± 1.1 |
394.6 ± 0.8 |
2.06 ± 0.13 |
| RH08 |
31.8 ± 1.2 |
402.1 ± 0.6 |
2.06 ± 0.13 |
| RH09 |
31.3 ± 1.2 |
401.2 ± 0.6 |
2.06 ± 0.13 |
| RH10 |
31.3 ± 1.2 |
401.2 ± 5.1 |
2.06 ± 0.13 |
| Average |
34.1 |
396.7 |
2.06 |
| Median |
31.3 |
398.0 |
2.06 |
| Deviation |
10.9 |
6.4 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
68.7 ± 0.6 |
27.9 ± 0.4 |
42.6 ± 0.9 |
52.3 ± 0.9 |
2.46 ± 0.03 |
1.31 ± 0.02 |
| VC |
82.4 ± 0.6 |
14.0 ± 0.2 |
23.5 ± 0.5 |
57.7 ± 0.9 |
5.90 ± 0.07 |
1.43 ± 0.02 |
| MX1 |
69.9 ± 0.6 |
27.6 ± 0.4 |
42.3 ± 0.9 |
52.5 ± 0.9 |
2.53 ± 0.03 |
1.33 ± 0.02 |
| MX2 |
70.1 ± 0.6 |
27.4 ± 0.4 |
42.1 ± 0.9 |
52.6 ± 0.9 |
2.56 ± 0.03 |
1.33 ± 0.02 |
| MX3 |
70.4 ± 0.6 |
27.0 ± 0.4 |
41.6 ± 0.9 |
52.8 ± 0.9 |
2.61 ± 0.03 |
1.33 ± 0.02 |
| RH8 |
70.6 ± 0.6 |
26.6 ± 0.4 |
41.2 ± 0.9 |
53.0 ± 0.9 |
2.65 ± 0.03 |
1.33 ± 0.02 |
| RH9 |
70.1 ± 0.6 |
26.8 ± 0.4 |
41.4 ± 0.9 |
52.9 ± 0.9 |
2.62 ± 0.03 |
1.32 ± 0.02 |
| RH10 |
70.1 ± 0.6 |
26.8 ± 0.4 |
41.4 ± 0.9 |
52.9 ± 0.9 |
2.62 ± 0.03 |
1.32 ± 0.02 |
| Average |
71.5 |
25.5 |
39.5 |
53.4 |
3.0 |
1.3 |
| Median |
70.1 |
27.0 |
41.6 |
52.9 |
2.6 |
1.3 |
| Deviation |
4.4 |
4.7 |
6.5 |
1.8 |
1.2 |
0.0 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
33.3 ± 2.1 |
33.6 ± 0.9 |
40.9 ± 0.8 |
56.2 ± 1.5 |
0.99 ± 0.08 |
0.59 ± 0.05 |
| VC |
40.0 ± 3.3 |
16.4 ± 0.4 |
22.6 ± 0.5 |
63.4 ± 1.7 |
2.44 ± 0.22 |
0.63 ± 0.06 |
| MX1 |
34.0 ± 2.4 |
33.2 ± 0.9 |
40.6 ± 0.8 |
56.5 ± 1.5 |
1.03 ± 0.09 |
0.60 ± 0.05 |
| MX2 |
34.0 ± 2.5 |
32.9 ± 0.9 |
40.4 ± 0.8 |
56.6 ± 1.5 |
1.03 ± 0.09 |
0.60 ± 0.05 |
| MX3 |
34.1 ± 2.8 |
32.3 ± 0.9 |
39.9 ± 0.8 |
56.9 ± 1.5 |
1.05 ± 0.10 |
0.60 ± 0.06 |
| RH8 |
34.2 ± 2.0 |
31.8 ± 0.9 |
39.5 ± 0.8 |
57.2 ± 1.5 |
1.07 ± 0.08 |
0.60 ± 0.04 |
| RH9 |
34.0 ± 2.0 |
32.1 ± 0.9 |
39.7 ± 0.8 |
57.1 ± 1.5 |
1.06 ± 0.08 |
0.60 ± 0.04 |
| RH10 |
34.0 ± 2.0 |
32.1 ± 0.9 |
39.7 ± 0.8 |
57.1 ± 1.5 |
1.06 ± 0.08 |
0.60 ± 0.04 |
| Average |
34.7 |
30.5 |
37.9 |
57.6 |
1.2 |
0.6 |
| Median |
34.0 |
32.3 |
39.9 |
57.1 |
1.1 |
0.6 |
| Deviation |
2.2 |
5.7 |
6.2 |
2.4 |
0.5 |
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)
| 
