Database: Ace Shock Analysis
Event ID: 20001080939
Observation time: 04/17/2000 108.40220 0939 [UT]
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|
General
Information (About, Top)
| Year |
2000 |
| Fractional day of year |
108.402199 |
| Arrival time of shock [seconds of day] |
34750.0 ± 30.0 |
| Shock type |
FR |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.035 |
| Y GSE location of spacecraft [Re] |
-0.003 |
| Z GSE location of spacecraft [Re] |
-0.002 |
| Upstream plasma points selected for analysis |
0008 |
| Upstream field points selected for analysis |
0032 |
| Downstream plasma points selected for analysis |
0005
|
| Downstream field points selected for analysis |
0023 |
| Minimum chisq/dof for RH8,RH9,RH10 |
18.97, 22.76, 23.68 |
Event added to database
|
Sat Apr 30 21:46:02 2005
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Event last processed
|
Wed Oct 15 15:57:09 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.010 ± 0.001
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-430.7 ± 2.3 |
-466.8 ± 5.2 |
| Vy GSE [km/s] |
4.0 ± 3.2 |
-4.6 ± 7.7 |
| Vz GSE [km/s] |
18.5 ± 2.7 |
-11.3 ± 2.9 |
| Wi [km/s] |
42.5 ± 1.1 |
40.1 ± 4.0 |
| We [km/s] |
1345.2 ± 34.0 |
1267.8 ± 128.0 |
| Ni [n/cc] |
8.2 ± 0.5 |
4.6 ± 0.4 |
| Bx GSE [nT] |
-4.6 ± 0.5 |
-2.2 ± 0.5 |
| By GSE [nT] |
2.7 ± 0.6 |
2.6 ± 0.7 |
| Bz GSE [nT] |
5.4 ± 0.5 |
2.8 ± 0.4 |
Plasma Beta
|
0.589 ± 0.590
|
0.747 ± 0.772
|
Sound Speed [km/s]
|
54.95 ± 1.36
|
49.73 ± 0.96
|
Alfven Speed [km/s]
|
55.51 ± 2.13
|
44.64 ± 1.19
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.998 ± 0.044 |
-0.029 ± 1.324 |
-0.055 ± 0.055 |
-3.17 ± 23.36 |
181.66 ± 76.03 |
| VC |
-0.763 ± 0.071 |
-0.162 ± 0.140 |
-0.626 ± 0.527 |
-38.72 ± 6.08 |
191.97 ± 10.49 |
| MX1 |
-0.700 ± 0.128 |
-0.210 ± 0.191 |
-0.683 ± 0.549 |
-43.04 ± 10.09 |
196.69 ± 15.40 |
| MX2 |
-0.697 ± 0.146 |
-0.267 ± 0.266 |
-0.666 ± 0.544 |
-41.72 ± 9.67 |
200.99 ± 21.63 |
| MX3 |
-0.706 ± 0.126 |
-0.163 ± 0.143 |
-0.689 ± 0.551 |
-43.59 ± 10.40 |
193.02 ± 11.38 |
| RH08 |
-0.980 ± 0.005 |
0.026 ± 0.020 |
-0.196 ± 0.193 |
-11.28 ± 1.36 |
178.50 ± 1.14 |
| RH09 |
-0.994 ± 0.007 |
0.078 ± 0.069 |
-0.073 ± 0.072 |
-4.16 ± 4.03 |
175.49 ± 3.95 |
| RH10 |
-0.994 ± 0.007 |
0.078 ± 0.069 |
-0.073 ± 0.072 |
-4.16 ± 4.03 |
175.49 ± 3.95 |
| Average |
-0.854 |
-0.081 |
-0.382 |
-23.731 |
186.724 |
| Median |
-0.763 |
-0.029 |
-0.196 |
-11.276 |
191.973 |
| Deviation |
0.149 |
0.136 |
0.306 |
19.491 |
10.113 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
56.1 ± 5.3 |
382.9 ± 7.0 |
0.53 ± 0.04 |
| VC |
88.1 ± 5.2 |
259.2 ± 9.7 |
0.53 ± 0.04 |
| MX1 |
82.6 ± 5.2 |
230.8 ± 9.6 |
0.53 ± 0.04 |
| MX2 |
82.0 ± 5.2 |
229.1 ± 9.0 |
0.53 ± 0.04 |
| MX3 |
83.4 ± 5.2 |
233.7 ± 10.0 |
0.53 ± 0.04 |
| RH08 |
62.1 ± 5.2 |
370.1 ± 8.4 |
0.53 ± 0.04 |
| RH09 |
54.4 ± 5.2 |
382.5 ± 7.7 |
0.53 ± 0.04 |
| RH10 |
54.4 ± 5.2 |
382.5 ± 7.7 |
0.53 ± 0.04 |
| Average |
70.4 |
308.9 |
0.53 |
| Median |
82.0 |
370.1 |
0.53 |
| Deviation |
14.9 |
76.2 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
-45.6 ± 2.4 |
22.8 ± 0.6 |
31.0 ± 1.2 |
74.7 ± 2.1 |
-2.00 ± 0.09 |
-0.61 ± 0.03 |
| VC |
-56.6 ± 3.3 |
1.3 ± 0.0 |
1.9 ± 0.1 |
78.1 ± 2.2 |
-43.07 ± 1.85 |
-0.72 ± 0.03 |
| MX1 |
-56.5 ± 3.3 |
5.1 ± 0.1 |
7.2 ± 0.3 |
78.0 ± 2.2 |
-11.16 ± 0.48 |
-0.72 ± 0.03 |
| MX2 |
-56.9 ± 3.3 |
5.5 ± 0.2 |
7.8 ± 0.3 |
77.9 ± 2.2 |
-10.39 ± 0.43 |
-0.73 ± 0.03 |
| MX3 |
-56.1 ± 3.3 |
4.5 ± 0.1 |
6.3 ± 0.2 |
78.0 ± 2.2 |
-12.56 ± 0.55 |
-0.72 ± 0.03 |
| RH8 |
-48.3 ± 2.7 |
18.8 ± 0.5 |
26.0 ± 1.0 |
75.8 ± 2.1 |
-2.56 ± 0.12 |
-0.64 ± 0.03 |
| RH9 |
-44.5 ± 2.4 |
23.9 ± 0.7 |
32.3 ± 1.2 |
74.4 ± 2.1 |
-1.86 ± 0.09 |
-0.60 ± 0.03 |
| RH10 |
-44.5 ± 2.4 |
23.9 ± 0.7 |
32.3 ± 1.2 |
74.4 ± 2.1 |
-1.86 ± 0.09 |
-0.60 ± 0.03 |
| Average |
-51.1 |
13.2 |
18.1 |
76.4 |
-10.7 |
-0.7 |
| Median |
-48.3 |
18.8 |
26.0 |
77.9 |
-2.6 |
-0.6 |
| Deviation |
5.9 |
10.0 |
13.4 |
1.8 |
13.9 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
-85.8 ± 3.4 |
19.4 ± 0.3 |
24.9 ± 0.7 |
64.0 ± 0.7 |
-4.43 ± 0.15 |
-1.34 ± 0.05 |
| VC |
-106.1 ± 2.2 |
1.1 ± 0.0 |
1.5 ± 0.0 |
66.8 ± 0.7 |
-94.92 ± 1.93 |
-1.59 ± 0.03 |
| MX1 |
-105.8 ± 2.2 |
4.3 ± 0.1 |
5.8 ± 0.2 |
66.7 ± 0.7 |
-24.56 ± 0.50 |
-1.59 ± 0.03 |
| MX2 |
-106.2 ± 2.4 |
4.7 ± 0.1 |
6.3 ± 0.2 |
66.7 ± 0.7 |
-22.79 ± 0.48 |
-1.59 ± 0.03 |
| MX3 |
-105.3 ± 2.0 |
3.8 ± 0.0 |
5.1 ± 0.1 |
66.7 ± 0.7 |
-27.72 ± 0.56 |
-1.58 ± 0.03 |
| RH8 |
-91.3 ± 2.7 |
16.0 ± 0.2 |
20.9 ± 0.6 |
64.9 ± 0.7 |
-5.70 ± 0.14 |
-1.41 ± 0.04 |
| RH9 |
-83.8 ± 2.8 |
20.3 ± 0.3 |
26.0 ± 0.7 |
63.7 ± 0.7 |
-4.13 ± 0.11 |
-1.32 ± 0.04 |
| RH10 |
-83.8 ± 2.8 |
20.3 ± 0.3 |
26.0 ± 0.7 |
63.7 ± 0.7 |
-4.13 ± 0.11 |
-1.32 ± 0.04 |
| Average |
-96.0 |
11.2 |
14.6 |
65.4 |
-23.5 |
-1.5 |
| Median |
-91.3 |
16.0 |
20.9 |
66.7 |
-5.7 |
-1.4 |
| Deviation |
10.8 |
8.5 |
10.8 |
1.5 |
30.6 |
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)
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