Database: Ace Shock Analysis
Event ID: 20000450657
Observation time: 02/14/2000 45.28970 0657 [UT]
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General
Information (About, Top)
Year |
2000 |
Fractional day of year |
45.289699 |
Arrival time of shock [seconds of day] |
25030.0 ± 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] |
0.004 |
Upstream plasma points selected for analysis |
0009 |
Upstream field points selected for analysis |
0035 |
Downstream plasma points selected for analysis |
0005
|
Downstream field points selected for analysis |
0025 |
Minimum chisq/dof for RH8,RH9,RH10 |
4.74, 7.92, 8.20 |
Event added to database
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Sat Apr 30 21:45:54 2005
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Event last processed
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Wed Oct 15 15:56:59 2014
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Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.006 ± 0.001
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Asymptotic
plasma
parameters (About, Top)
Parameter
|
Upstream
|
Downstream
|
Vx GSE [km/s] |
-573.0 ± 15.8 |
-619.3 ± 14.8 |
Vy GSE [km/s] |
-1.1 ± 7.8 |
-10.2 ± 11.4 |
Vz GSE [km/s] |
-25.9 ± 34.2 |
-42.5 ± 22.7 |
Wi [km/s] |
43.9 ± 3.4 |
57.6 ± 2.0 |
We [km/s] |
1388.4 ± 107.1 |
1821.9 ± 64.1 |
Ni [n/cc] |
3.6 ± 0.5 |
5.6 ± 0.3 |
Bx GSE [nT] |
2.4 ± 1.4 |
2.1 ± 1.0 |
By GSE [nT] |
-4.5 ± 0.8 |
-9.7 ± 0.6 |
Bz GSE [nT] |
-1.9 ± 1.9 |
-2.2 ± 2.0 |
Plasma Beta
|
0.428 ± 0.385
|
0.445 ± 0.448
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Sound Speed [km/s]
|
56.51 ± 4.54
|
74.35 ± 2.52
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Alfven Speed [km/s]
|
67.80 ± 4.84
|
87.24 ± 8.75
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Best values of
shock
front normal for each method (About, Top)
Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
MC |
-0.959 ± 0.176 |
0.278 ± 0.589 |
0.056 ± 0.055 |
3.18 ± 43.57 |
163.82 ± 35.17 |
VC |
-0.948 ± 0.161 |
-0.205 ± 0.318 |
-0.243 ± 0.238 |
-14.04 ± 35.23 |
192.20 ± 19.11 |
MX1 |
-0.990 ± 0.080 |
0.093 ± 0.536 |
-0.105 ± 0.105 |
-6.03 ± 33.85 |
174.66 ± 31.00 |
MX2 |
-0.984 ± 0.096 |
0.086 ± 0.456 |
-0.157 ± 0.156 |
-9.04 ± 31.93 |
174.98 ± 26.54 |
MX3 |
-0.977 ± 0.117 |
0.096 ± 0.469 |
-0.192 ± 0.189 |
-11.05 ± 32.41 |
174.36 ± 27.48 |
RH08 |
-0.995 ± 0.003 |
0.026 ± 0.023 |
-0.095 ± 0.095 |
-5.45 ± 1.50 |
178.50 ± 1.32 |
RH09 |
-0.994 ± 0.008 |
0.061 ± 0.069 |
-0.095 ± 0.095 |
-5.45 ± 4.02 |
176.49 ± 3.99 |
RH10 |
-0.994 ± 0.008 |
0.061 ± 0.069 |
-0.095 ± 0.095 |
-5.45 ± 4.02 |
176.49 ± 3.99 |
Average |
-0.980 |
0.062 |
-0.116 |
-6.665 |
176.437 |
Median |
-0.984 |
0.086 |
-0.095 |
-5.450 |
176.490 |
Deviation |
0.018 |
0.132 |
0.088 |
5.087 |
7.761 |
Key shock
parameters (About, Top)
Method |
ThetaBn |
Shock Speed |
Compression |
MC |
48.6 ± 15.5 |
656.1 ± 116.0 |
1.71 ± 0.27 |
VC |
79.2 ± 16.4 |
683.1 ± 108.8 |
1.71 ± 0.27 |
MX1 |
61.2 ± 16.3 |
697.2 ± 114.8 |
1.71 ± 0.27 |
MX2 |
62.4 ± 16.2 |
690.7 ± 111.6 |
1.71 ± 0.27 |
MX3 |
62.6 ± 16.4 |
686.7 ± 109.0 |
1.71 ± 0.27 |
RH08 |
64.2 ± 15.9 |
700.0 ± 117.3 |
1.71 ± 0.27 |
RH09 |
62.4 ± 15.8 |
699.3 ± 116.4 |
1.71 ± 0.27 |
RH10 |
62.4 ± 15.8 |
699.3 ± 116.4 |
1.71 ± 0.27 |
Average |
62.9 |
689.1 |
1.71 |
Median |
62.4 |
697.2 |
1.71 |
Deviation |
8.2 |
14.8 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
MC |
109.3 ± 14.3 |
30.4 ± 1.5 |
44.8 ± 3.2 |
83.0 ± 3.8 |
3.59 ± 0.45 |
1.32 ± 0.17 |
VC |
134.8 ± 21.0 |
8.1 ± 0.4 |
12.7 ± 0.9 |
88.0 ± 4.0 |
16.54 ± 2.21 |
1.53 ± 0.21 |
MX1 |
128.6 ± 17.8 |
21.5 ± 1.0 |
32.7 ± 2.3 |
85.7 ± 3.9 |
5.98 ± 0.74 |
1.50 ± 0.19 |
MX2 |
124.5 ± 18.6 |
20.6 ± 1.0 |
31.4 ± 2.2 |
86.0 ± 3.9 |
6.04 ± 0.80 |
1.45 ± 0.19 |
MX3 |
123.9 ± 19.2 |
20.5 ± 1.0 |
31.2 ± 2.2 |
86.0 ± 3.9 |
6.04 ± 0.82 |
1.44 ± 0.20 |
RH8 |
128.6 ± 18.0 |
19.2 ± 0.9 |
29.5 ± 2.1 |
86.3 ± 3.9 |
6.68 ± 0.83 |
1.49 ± 0.19 |
RH9 |
128.9 ± 17.8 |
20.6 ± 1.0 |
31.4 ± 2.2 |
86.0 ± 3.9 |
6.25 ± 0.77 |
1.50 ± 0.19 |
RH10 |
128.9 ± 17.8 |
20.6 ± 1.0 |
31.4 ± 2.2 |
86.0 ± 3.9 |
6.25 ± 0.77 |
1.50 ± 0.19 |
Average |
125.9 |
20.2 |
30.7 |
85.9 |
7.2 |
1.5 |
Median |
128.6 |
20.6 |
31.4 |
86.0 |
6.3 |
1.5 |
Deviation |
7.5 |
6.0 |
8.7 |
1.4 |
3.9 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
MC |
68.4 ± 14.2 |
39.8 ± 2.1 |
57.7 ± 5.8 |
107.6 ± 7.2 |
1.73 ± 0.41 |
0.64 ± 0.16 |
VC |
83.0 ± 11.1 |
10.6 ± 0.6 |
16.3 ± 1.6 |
114.2 ± 7.5 |
7.84 ± 1.21 |
0.73 ± 0.12 |
MX1 |
80.7 ± 13.2 |
28.1 ± 1.5 |
42.1 ± 4.2 |
111.2 ± 7.4 |
2.89 ± 0.54 |
0.73 ± 0.15 |
MX2 |
75.6 ± 13.0 |
26.9 ± 1.5 |
40.5 ± 4.1 |
111.5 ± 7.4 |
2.82 ± 0.54 |
0.68 ± 0.14 |
MX3 |
74.4 ± 13.0 |
26.7 ± 1.5 |
40.2 ± 4.0 |
111.6 ± 7.4 |
2.79 ± 0.54 |
0.67 ± 0.14 |
RH8 |
80.1 ± 13.0 |
25.1 ± 1.4 |
37.9 ± 3.8 |
111.9 ± 7.4 |
3.20 ± 0.60 |
0.72 ± 0.14 |
RH9 |
80.8 ± 13.1 |
26.9 ± 1.5 |
40.4 ± 4.1 |
111.5 ± 7.4 |
3.02 ± 0.56 |
0.73 ± 0.15 |
RH10 |
80.8 ± 13.1 |
26.9 ± 1.5 |
40.4 ± 4.1 |
111.5 ± 7.4 |
3.02 ± 0.56 |
0.73 ± 0.15 |
Average |
78.0 |
26.4 |
39.4 |
111.4 |
3.4 |
0.7 |
Median |
80.7 |
26.9 |
40.4 |
111.5 |
3.0 |
0.7 |
Deviation |
4.8 |
7.9 |
11.2 |
1.8 |
1.8 |
0.0 |
Survey interval (About, Top)
Selected
data (About, Top)
Key plasma parameters
|
Velocity
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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)
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