Database: Ace Shock Analysis
Event ID: 19983110736
Observation time: 11/07/1998 311.31701 0736 [UT]
|
|
General
Information (About, Top)
| Year |
1998 |
| Fractional day of year |
311.317014 |
| Arrival time of shock [seconds of day] |
27390.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.035 |
| Y GSE location of spacecraft [Re] |
-0.004 |
| Z GSE location of spacecraft [Re] |
-0.003 |
| Upstream plasma points selected for analysis |
0008 |
| Upstream field points selected for analysis |
0038 |
| Downstream plasma points selected for analysis |
0011
|
| Downstream field points selected for analysis |
0047 |
| Minimum chisq/dof for RH8,RH9,RH10 |
2.28, 3.44, 3.49 |
Event added to database
|
Sat Apr 30 21:43:22 2005
|
Event last processed
|
Wed Oct 15 14:43:24 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.007 ± 0.000
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-416.2 ± 5.9 |
-460.2 ± 12.8 |
| Vy GSE [km/s] |
16.2 ± 6.2 |
-12.4 ± 5.6 |
| Vz GSE [km/s] |
-25.2 ± 6.0 |
-32.4 ± 17.8 |
| Wi [km/s] |
41.3 ± 2.3 |
53.5 ± 5.6 |
| We [km/s] |
1305.3 ± 71.8 |
1691.7 ± 176.4 |
| Ni [n/cc] |
6.1 ± 0.6 |
11.0 ± 1.9 |
| Bx GSE [nT] |
-3.7 ± 0.6 |
-3.5 ± 1.4 |
| By GSE [nT] |
-0.7 ± 1.6 |
8.8 ± 1.6 |
| Bz GSE [nT] |
4.2 ± 0.5 |
2.6 ± 3.1 |
Plasma Beta
|
0.629 ± 0.641
|
0.629 ± 0.545
|
Sound Speed [km/s]
|
53.42 ± 2.93
|
68.22 ± 6.90
|
Alfven Speed [km/s]
|
52.49 ± 3.58
|
69.43 ± 6.33
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.734 ± 0.097 |
0.084 ± 0.291 |
0.674 ± 0.546 |
42.34 ± 7.77 |
173.49 ± 22.70 |
| VC |
-0.816 ± 0.113 |
-0.550 ± 0.154 |
-0.175 ± 0.174 |
-10.10 ± 19.97 |
213.99 ± 10.51 |
| MX1 |
-0.950 ± 0.266 |
-0.295 ± 0.797 |
0.102 ± 0.102 |
5.87 ± 56.17 |
197.28 ± 48.05 |
| MX2 |
-0.999 ± 0.010 |
0.035 ± 0.175 |
-0.036 ± 0.036 |
-2.06 ± 13.22 |
178.02 ± 10.07 |
| MX3 |
-0.952 ± 0.088 |
0.007 ± 0.175 |
-0.305 ± 0.295 |
-17.76 ± 16.46 |
179.59 ± 10.54 |
| RH08 |
-0.986 ± 0.003 |
0.130 ± 0.013 |
-0.106 ± 0.106 |
-6.09 ± 1.17 |
172.48 ± 0.78 |
| RH09 |
-0.985 ± 0.012 |
0.130 ± 0.070 |
-0.117 ± 0.117 |
-6.74 ± 4.01 |
172.48 ± 4.07 |
| RH10 |
-0.985 ± 0.012 |
0.130 ± 0.070 |
-0.117 ± 0.117 |
-6.74 ± 4.01 |
172.48 ± 4.07 |
| Average |
-0.926 |
-0.041 |
-0.010 |
-0.159 |
182.476 |
| Median |
-0.952 |
0.084 |
-0.106 |
-6.093 |
178.021 |
| Deviation |
0.097 |
0.249 |
0.299 |
18.427 |
15.218 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
19.4 ± 9.9 |
340.8 ± 40.0 |
1.71 ± 0.21 |
| VC |
62.8 ± 8.5 |
456.2 ± 23.6 |
1.71 ± 0.21 |
| MX1 |
44.9 ± 6.9 |
501.8 ± 29.7 |
1.71 ± 0.21 |
| MX2 |
53.3 ± 7.4 |
517.6 ± 24.8 |
1.71 ± 0.21 |
| MX3 |
67.8 ± 6.6 |
504.5 ± 21.4 |
1.71 ± 0.21 |
| RH08 |
58.1 ± 8.3 |
508.8 ± 22.9 |
1.71 ± 0.21 |
| RH09 |
58.7 ± 8.2 |
509.0 ± 22.7 |
1.71 ± 0.21 |
| RH10 |
58.7 ± 8.2 |
509.0 ± 22.7 |
1.71 ± 0.21 |
| Average |
53.0 |
481.0 |
1.71 |
| Median |
58.7 |
508.8 |
1.71 |
| Deviation |
15.1 |
59.7 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
50.4 ± 7.3 |
43.1 ± 2.3 |
49.5 ± 3.4 |
61.3 ± 2.9 |
1.18 ± 0.22 |
0.83 ± 0.15 |
| VC |
120.7 ± 1.6 |
17.6 ± 0.9 |
24.0 ± 1.6 |
72.8 ± 3.6 |
6.89 ± 0.36 |
1.66 ± 0.08 |
| MX1 |
113.5 ± 4.4 |
28.6 ± 1.5 |
37.2 ± 2.5 |
69.3 ± 3.4 |
3.98 ± 0.31 |
1.64 ± 0.12 |
| MX2 |
100.3 ± 6.0 |
23.5 ± 1.2 |
31.4 ± 2.1 |
71.1 ± 3.5 |
4.28 ± 0.39 |
1.41 ± 0.13 |
| MX3 |
100.3 ± 5.3 |
14.4 ± 0.7 |
19.8 ± 1.3 |
73.5 ± 3.6 |
7.00 ± 0.54 |
1.37 ± 0.10 |
| RH8 |
93.6 ± 6.4 |
20.5 ± 1.0 |
27.7 ± 1.9 |
72.1 ± 3.5 |
4.58 ± 0.44 |
1.30 ± 0.12 |
| RH9 |
94.1 ± 6.4 |
20.1 ± 1.0 |
27.2 ± 1.9 |
72.2 ± 3.5 |
4.69 ± 0.45 |
1.31 ± 0.12 |
| RH10 |
94.1 ± 6.4 |
20.1 ± 1.0 |
27.2 ± 1.9 |
72.2 ± 3.5 |
4.69 ± 0.45 |
1.31 ± 0.12 |
| Average |
95.9 |
23.5 |
30.5 |
70.6 |
4.7 |
1.4 |
| Median |
100.3 |
20.5 |
27.7 |
72.2 |
4.7 |
1.4 |
| Deviation |
20.9 |
8.9 |
9.2 |
3.9 |
1.8 |
0.3 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
25.3 ± 20.1 |
55.0 ± 2.9 |
65.5 ± 6.0 |
80.7 ± 3.0 |
0.45 ± 0.38 |
0.32 ± 0.25 |
| VC |
68.7 ± 10.9 |
22.6 ± 0.8 |
31.7 ± 2.9 |
95.1 ± 2.3 |
3.05 ± 0.49 |
0.72 ± 0.12 |
| MX1 |
64.7 ± 15.3 |
36.8 ± 1.4 |
49.2 ± 4.5 |
90.5 ± 2.4 |
1.76 ± 0.42 |
0.72 ± 0.18 |
| MX2 |
57.8 ± 12.8 |
30.2 ± 1.1 |
41.5 ± 3.8 |
92.9 ± 2.3 |
1.91 ± 0.43 |
0.62 ± 0.15 |
| MX3 |
57.3 ± 9.8 |
18.5 ± 0.7 |
26.2 ± 2.4 |
96.0 ± 2.3 |
3.10 ± 0.55 |
0.60 ± 0.11 |
| RH8 |
53.9 ± 11.5 |
26.4 ± 1.0 |
36.6 ± 3.3 |
94.1 ± 2.3 |
2.04 ± 0.44 |
0.57 ± 0.13 |
| RH9 |
54.4 ± 11.4 |
25.9 ± 0.9 |
36.0 ± 3.3 |
94.2 ± 2.3 |
2.10 ± 0.45 |
0.58 ± 0.13 |
| RH10 |
54.4 ± 11.4 |
25.9 ± 0.9 |
36.0 ± 3.3 |
94.2 ± 2.3 |
2.10 ± 0.45 |
0.58 ± 0.13 |
| Average |
54.6 |
30.1 |
40.3 |
92.2 |
2.1 |
0.6 |
| Median |
57.3 |
26.4 |
36.6 |
94.2 |
2.1 |
0.6 |
| Deviation |
13.0 |
11.4 |
12.2 |
4.9 |
0.8 |
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)
| 
