Database: Ace Shock Analysis
Event ID: 19993602127
Observation time: 12/26/1999 360.89402 2127 [UT]
|
|
General
Information (About, Top)
| Year |
1999 |
| Fractional day of year |
360.894016 |
| Arrival time of shock [seconds of day] |
77243.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.036 |
| Y GSE location of spacecraft [Re] |
0.006 |
| Z GSE location of spacecraft [Re] |
-0.000 |
| Upstream plasma points selected for analysis |
0007 |
| Upstream field points selected for analysis |
0034 |
| Downstream plasma points selected for analysis |
0011
|
| Downstream field points selected for analysis |
0042 |
| Minimum chisq/dof for RH8,RH9,RH10 |
13.52, 20.34, 20.96 |
Event added to database
|
Sat Apr 30 21:45:26 2005
|
Event last processed
|
Wed Oct 15 15:42:07 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.008 ± 0.001
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-368.5 ± 1.6 |
-396.6 ± 1.4 |
| Vy GSE [km/s] |
-34.3 ± 2.1 |
-79.8 ± 3.3 |
| Vz GSE [km/s] |
-11.1 ± 3.2 |
-14.6 ± 3.6 |
| Wi [km/s] |
26.2 ± 0.9 |
33.0 ± 0.4 |
| We [km/s] |
827.5 ± 28.9 |
1043.2 ± 13.9 |
| Ni [n/cc] |
3.7 ± 0.1 |
6.6 ± 0.2 |
| Bx GSE [nT] |
-8.0 ± 0.1 |
-8.5 ± 0.1 |
| By GSE [nT] |
2.8 ± 0.3 |
6.9 ± 0.2 |
| Bz GSE [nT] |
1.0 ± 0.4 |
3.0 ± 0.7 |
Plasma Beta
|
0.076 ± 0.076
|
0.126 ± 0.126
|
Sound Speed [km/s]
|
33.77 ± 1.17
|
42.48 ± 0.61
|
Alfven Speed [km/s]
|
94.97 ± 2.17
|
92.72 ± 1.40
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.996 ± 0.008 |
-0.066 ± 0.075 |
-0.067 ± 0.067 |
-3.85 ± 5.61 |
183.79 ± 4.32 |
| VC |
-0.524 ± 0.027 |
-0.849 ± 0.017 |
-0.063 ± 0.062 |
-3.59 ± 4.75 |
238.30 ± 1.81 |
| MX1 |
-0.988 ± 0.008 |
-0.141 ± 0.046 |
0.066 ± 0.066 |
3.81 ± 3.09 |
188.11 ± 2.69 |
| MX2 |
-0.970 ± 0.011 |
-0.189 ± 0.040 |
0.154 ± 0.153 |
8.85 ± 2.79 |
191.05 ± 2.36 |
| MX3 |
-0.883 ± 0.049 |
-0.301 ± 0.093 |
0.359 ± 0.343 |
21.07 ± 6.44 |
198.82 ± 5.95 |
| RH08 |
-0.909 ± 0.007 |
-0.305 ± 0.012 |
0.285 ± 0.277 |
16.55 ± 1.34 |
198.55 ± 0.76 |
| RH09 |
-0.878 ± 0.031 |
-0.347 ± 0.057 |
0.330 ± 0.317 |
19.25 ± 4.05 |
201.56 ± 3.70 |
| RH10 |
-0.878 ± 0.031 |
-0.347 ± 0.058 |
0.330 ± 0.317 |
19.25 ± 4.05 |
201.56 ± 3.77 |
| Average |
-0.878 |
-0.318 |
0.174 |
10.167 |
200.218 |
| Median |
-0.883 |
-0.301 |
0.285 |
16.554 |
198.825 |
| Deviation |
0.151 |
0.238 |
0.178 |
10.366 |
16.730 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
25.4 ± 1.2 |
441.8 ± 6.1 |
1.85 ± 0.10 |
| VC |
78.0 ± 1.6 |
345.4 ± 10.8 |
1.85 ± 0.10 |
| MX1 |
27.4 ± 1.6 |
446.4 ± 5.8 |
1.85 ± 0.10 |
| MX2 |
30.1 ± 1.8 |
443.3 ± 5.5 |
1.85 ± 0.10 |
| MX3 |
39.4 ± 2.2 |
417.1 ± 5.0 |
1.85 ± 0.10 |
| RH08 |
38.2 ± 2.1 |
430.3 ± 5.5 |
1.85 ± 0.10 |
| RH09 |
41.5 ± 2.1 |
422.1 ± 5.5 |
1.85 ± 0.10 |
| RH10 |
41.5 ± 2.1 |
422.1 ± 5.5 |
1.85 ± 0.10 |
| Average |
40.2 |
421.1 |
1.85 |
| Median |
39.4 |
430.3 |
1.85 |
| Deviation |
16.6 |
32.5 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
71.8 ± 1.7 |
30.1 ± 1.0 |
85.8 ± 2.0 |
96.2 ± 2.1 |
2.39 ± 0.12 |
0.75 ± 0.02 |
| VC |
121.5 ± 2.2 |
6.6 ± 0.2 |
19.7 ± 0.5 |
100.6 ± 1.8 |
18.41 ± 0.85 |
1.21 ± 0.02 |
| MX1 |
78.0 ± 1.8 |
29.5 ± 1.0 |
84.3 ± 1.9 |
96.4 ± 2.1 |
2.64 ± 0.14 |
0.81 ± 0.02 |
| MX2 |
80.9 ± 1.9 |
28.7 ± 0.9 |
82.2 ± 1.9 |
96.6 ± 2.0 |
2.82 ± 0.15 |
0.84 ± 0.02 |
| MX3 |
84.9 ± 2.3 |
25.4 ± 0.8 |
73.3 ± 1.7 |
97.6 ± 2.0 |
3.35 ± 0.19 |
0.87 ± 0.02 |
| RH8 |
87.7 ± 2.2 |
25.9 ± 0.8 |
74.6 ± 1.7 |
97.4 ± 2.0 |
3.39 ± 0.19 |
0.90 ± 0.02 |
| RH9 |
89.8 ± 2.3 |
24.6 ± 0.8 |
71.1 ± 1.6 |
97.8 ± 1.9 |
3.66 ± 0.21 |
0.92 ± 0.02 |
| RH10 |
89.8 ± 2.3 |
24.6 ± 0.8 |
71.1 ± 1.6 |
97.8 ± 1.9 |
3.66 ± 0.21 |
0.92 ± 0.02 |
| Average |
88.0 |
24.4 |
70.3 |
97.5 |
5.0 |
0.9 |
| Median |
87.7 |
25.9 |
74.6 |
97.6 |
3.4 |
0.9 |
| Deviation |
14.9 |
7.5 |
21.3 |
1.4 |
5.4 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
40.6 ± 1.7 |
37.5 ± 0.5 |
83.8 ± 1.3 |
94.8 ± 1.4 |
1.08 ± 0.06 |
0.43 ± 0.02 |
| VC |
68.1 ± 3.6 |
8.0 ± 0.1 |
19.2 ± 0.3 |
101.7 ± 1.3 |
8.48 ± 0.54 |
0.67 ± 0.04 |
| MX1 |
44.2 ± 1.6 |
36.8 ± 0.5 |
82.3 ± 1.2 |
95.1 ± 1.4 |
1.20 ± 0.06 |
0.46 ± 0.02 |
| MX2 |
45.6 ± 1.6 |
35.7 ± 0.5 |
80.2 ± 1.2 |
95.5 ± 1.4 |
1.28 ± 0.06 |
0.48 ± 0.02 |
| MX3 |
47.8 ± 1.5 |
31.3 ± 0.4 |
71.6 ± 1.1 |
97.1 ± 1.3 |
1.53 ± 0.06 |
0.49 ± 0.02 |
| RH8 |
49.4 ± 1.6 |
32.0 ± 0.4 |
72.9 ± 1.1 |
96.9 ± 1.4 |
1.55 ± 0.07 |
0.51 ± 0.02 |
| RH9 |
50.7 ± 1.6 |
30.3 ± 0.4 |
69.4 ± 1.0 |
97.4 ± 1.3 |
1.67 ± 0.07 |
0.52 ± 0.02 |
| RH10 |
50.7 ± 1.6 |
30.3 ± 0.4 |
69.4 ± 1.0 |
97.4 ± 1.3 |
1.67 ± 0.07 |
0.52 ± 0.02 |
| Average |
49.6 |
30.2 |
68.6 |
97.0 |
2.3 |
0.5 |
| Median |
49.4 |
32.0 |
72.9 |
97.1 |
1.5 |
0.5 |
| Deviation |
8.2 |
9.4 |
20.8 |
2.2 |
2.5 |
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)
| 
