Database: Ace Shock Analysis
Event ID: 20001150851
Observation time: 04/24/2000 115.36942 0851 [UT]
|
|
General
Information (About, Top)
| Year |
2000 |
| Fractional day of year |
115.369421 |
| Arrival time of shock [seconds of day] |
31918.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
| X GSE location of spacecraft [Re] |
0.035 |
| Y GSE location of spacecraft [Re] |
-0.002 |
| Z GSE location of spacecraft [Re] |
-0.003 |
| Upstream plasma points selected for analysis |
0007 |
| Upstream field points selected for analysis |
0029 |
| Downstream plasma points selected for analysis |
0005
|
| Downstream field points selected for analysis |
0021 |
| Minimum chisq/dof for RH8,RH9,RH10 |
27.75, 31.61, 14.45 |
Event added to database
|
Sat Apr 30 21:46:05 2005
|
Event last processed
|
Wed Oct 15 15:59:23 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.049 ± 1.605
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-470.0 ± 4.7 |
-516.9 ± 1.8 |
| Vy GSE [km/s] |
-7.4 ± 3.5 |
16.6 ± 3.2 |
| Vz GSE [km/s] |
18.6 ± 5.6 |
-14.3 ± 11.8 |
| Wi [km/s] |
35.6 ± 1.4 |
46.9 ± 2.3 |
| We [km/s] |
1124.2 ± 45.4 |
1481.9 ± 74.1 |
| Ni [n/cc] |
5.2 ± 0.5 |
7.7 ± 0.5 |
| Bx GSE [nT] |
5.3 ± 0.6 |
8.5 ± 0.4 |
| By GSE [nT] |
9.3 ± 0.3 |
13.1 ± 0.0 |
| Bz GSE [nT] |
-0.4 ± 0.6 |
3.2 ± 1.3 |
Plasma Beta
|
0.133 ± 0.137
|
0.149 ± 0.141
|
Sound Speed [km/s]
|
45.85 ± 1.81
|
60.35 ± 3.04
|
Alfven Speed [km/s]
|
98.38 ± 6.27
|
122.21 ± 5.93
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.948 ± 0.411 |
0.316 ± 1.233 |
-0.037 ± 0.037 |
-2.12 ± 46.42 |
161.59 ± 74.49 |
| VC |
-0.768 ± 0.086 |
0.386 ± 0.065 |
-0.511 ± 0.461 |
-30.70 ± 10.37 |
153.34 ± 3.70 |
| MX1 |
-0.383 ± 0.183 |
0.813 ± 0.102 |
-0.440 ± 0.409 |
-26.09 ± 8.13 |
115.22 ± 12.76 |
| MX2 |
-0.462 ± 0.135 |
0.801 ± 0.086 |
-0.381 ± 0.361 |
-22.37 ± 6.55 |
119.99 ± 9.54 |
| MX3 |
-0.581 ± 0.084 |
0.769 ± 0.065 |
-0.267 ± 0.261 |
-15.51 ± 4.50 |
127.09 ± 6.17 |
| RH08 |
0.184 ± 0.039 |
0.540 ± 0.027 |
-0.821 ± 0.550 |
-55.21 ± 1.72 |
71.20 ± 4.07 |
| RH09 |
0.009 ± 0.067 |
0.681 ± 0.046 |
-0.732 ± 0.560 |
-47.04 ± 3.58 |
89.25 ± 5.63 |
| RH10 |
-0.738 ± 0.047 |
0.205 ± 0.070 |
0.642 ± 0.535 |
39.98 ± 3.97 |
164.46 ± 5.34 |
| Average |
-0.461 |
0.564 |
-0.318 |
-19.883 |
125.266 |
| Median |
-0.462 |
0.681 |
-0.381 |
-22.369 |
127.091 |
| Deviation |
0.390 |
0.238 |
0.460 |
29.435 |
33.798 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
78.8 ± 3.2 |
602.8 ± 13.6 |
1.44 ± 0.12 |
| VC |
88.5 ± 3.2 |
545.9 ± 17.1 |
1.44 ± 0.12 |
| MX1 |
57.8 ± 3.2 |
326.0 ± 13.7 |
1.44 ± 0.12 |
| MX2 |
61.3 ± 3.2 |
367.3 ± 14.0 |
1.44 ± 0.12 |
| MX3 |
67.1 ± 3.2 |
427.6 ± 14.0 |
1.44 ± 0.12 |
| RH08 |
53.7 ± 3.2 |
2.4 ± 10.3 |
1.44 ± 0.12 |
| RH09 |
51.4 ± 3.1 |
111.7 ± 11.9 |
1.44 ± 0.12 |
| RH10 |
77.7 ± 3.3 |
416.3 ± 27.3 |
1.44 ± 0.12 |
| Average |
67.1 |
350.0 |
1.44 |
| Median |
67.1 |
416.3 |
1.44 |
| Deviation |
13.4 |
204.0 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
160.1 ± 5.4 |
8.1 ± 0.2 |
19.1 ± 1.2 |
108.3 ± 5.2 |
19.86 ± 0.60 |
1.48 ± 0.11 |
| VC |
197.4 ± 5.6 |
1.1 ± 0.0 |
2.5 ± 0.2 |
108.6 ± 5.2 |
187.70 ± 4.34 |
1.82 ± 0.13 |
| MX1 |
160.7 ± 5.1 |
22.6 ± 0.6 |
52.4 ± 3.3 |
106.2 ± 5.4 |
7.11 ± 0.15 |
1.52 ± 0.11 |
| MX2 |
163.3 ± 5.2 |
20.3 ± 0.6 |
47.3 ± 3.0 |
106.7 ± 5.3 |
8.04 ± 0.18 |
1.54 ± 0.11 |
| MX3 |
165.2 ± 5.3 |
16.3 ± 0.4 |
38.3 ± 2.4 |
107.4 ± 5.3 |
10.11 ± 0.24 |
1.54 ± 0.11 |
| RH8 |
108.9 ± 4.9 |
25.2 ± 0.7 |
58.2 ± 3.7 |
105.6 ± 5.4 |
4.31 ± 0.16 |
1.03 ± 0.09 |
| RH9 |
135.1 ± 4.9 |
26.7 ± 0.8 |
61.4 ± 3.9 |
105.3 ± 5.4 |
5.06 ± 0.13 |
1.29 ± 0.10 |
| RH10 |
58.2 ± 5.3 |
8.8 ± 0.2 |
20.9 ± 1.3 |
108.2 ± 5.2 |
6.59 ± 0.61 |
0.54 ± 0.06 |
| Average |
143.6 |
16.1 |
37.5 |
107.0 |
31.1 |
1.3 |
| Median |
160.7 |
20.3 |
47.3 |
107.4 |
8.0 |
1.5 |
| Deviation |
42.9 |
9.3 |
21.2 |
1.3 |
63.5 |
0.4 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
106.9 ± 1.9 |
10.5 ± 0.3 |
23.7 ± 1.1 |
136.0 ± 4.2 |
10.18 ± 0.24 |
0.79 ± 0.03 |
| VC |
135.7 ± 6.6 |
1.4 ± 0.0 |
3.1 ± 0.2 |
136.4 ± 4.1 |
99.05 ± 2.33 |
1.00 ± 0.08 |
| MX1 |
109.3 ± 4.9 |
29.5 ± 1.0 |
65.1 ± 3.2 |
133.1 ± 4.4 |
3.71 ± 0.07 |
0.82 ± 0.06 |
| MX2 |
110.4 ± 4.4 |
26.5 ± 0.9 |
58.8 ± 2.8 |
133.8 ± 4.3 |
4.17 ± 0.08 |
0.83 ± 0.06 |
| MX3 |
111.1 ± 3.5 |
21.3 ± 0.7 |
47.6 ± 2.3 |
134.7 ± 4.3 |
5.22 ± 0.10 |
0.83 ± 0.05 |
| RH8 |
78.2 ± 8.6 |
32.9 ± 1.1 |
72.3 ± 3.5 |
132.3 ± 4.5 |
2.37 ± 0.18 |
0.59 ± 0.09 |
| RH9 |
95.8 ± 7.7 |
34.9 ± 1.2 |
76.2 ± 3.7 |
131.8 ± 4.5 |
2.74 ± 0.13 |
0.73 ± 0.08 |
| RH10 |
39.4 ± 6.9 |
11.5 ± 0.4 |
26.0 ± 1.3 |
135.9 ± 4.2 |
3.43 ± 0.68 |
0.29 ± 0.04 |
| Average |
98.3 |
21.1 |
46.6 |
134.3 |
16.4 |
0.7 |
| Median |
109.3 |
26.5 |
58.8 |
134.7 |
4.2 |
0.8 |
| Deviation |
28.7 |
12.1 |
26.4 |
1.7 |
33.5 |
0.2 |
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)
| 
