Database: Ace Shock Analysis
Event ID: 20002611657
Observation time: 09/17/2000 261.70642 1657 [UT]
|
|
General
Information (About, Top)
| Year |
2000 |
| Fractional day of year |
261.706424 |
| Arrival time of shock [seconds of day] |
61035.0 ± 32.0 |
| 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] |
0.001 |
| Upstream plasma points selected for analysis |
0009 |
| Upstream field points selected for analysis |
0033 |
| Downstream plasma points selected for analysis |
0006
|
| Downstream field points selected for analysis |
0049 |
| Minimum chisq/dof for RH8,RH9,RH10 |
2.33, 3.87, 4.07 |
Event added to database
|
Sat Apr 30 21:47:35 2005
|
Event last processed
|
Tue May 3 13:33:53 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.005 ± 0.001
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-589.9 ± 6.8 |
-698.4 ± 10.4 |
| Vy GSE [km/s] |
-41.2 ± 9.2 |
86.7 ± 22.1 |
| Vz GSE [km/s] |
57.2 ± 11.0 |
145.6 ± 13.1 |
| Wi [km/s] |
40.9 ± 3.7 |
99.3 ± 6.8 |
| We [km/s] |
1293.5 ± 117.9 |
3139.9 ± 214.7 |
| Ni [n/cc] |
10.2 ± 0.9 |
14.1 ± 1.3 |
| Bx GSE [nT] |
14.0 ± 0.6 |
14.1 ± 2.0 |
| By GSE [nT] |
-10.0 ± 1.1 |
-11.0 ± 2.3 |
| Bz GSE [nT] |
9.9 ± 2.4 |
30.1 ± 3.4 |
Plasma Beta
|
0.092 ± 0.092
|
0.242 ± 0.223
|
Sound Speed [km/s]
|
52.81 ± 4.81
|
128.18 ± 8.76
|
Alfven Speed [km/s]
|
136.49 ± 10.00
|
205.23 ± 19.74
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.837 ± 0.050 |
0.546 ± 0.077 |
0.036 ± 0.036 |
2.09 ± 8.25 |
146.86 ± 5.26 |
| VC |
-0.578 ± 0.083 |
0.673 ± 0.073 |
0.462 ± 0.426 |
27.51 ± 3.94 |
130.67 ± 6.82 |
| MX1 |
-0.732 ± 0.047 |
0.680 ± 0.051 |
0.047 ± 0.047 |
2.71 ± 8.65 |
137.10 ± 3.95 |
| MX2 |
-0.683 ± 0.064 |
0.729 ± 0.060 |
0.050 ± 0.050 |
2.89 ± 8.57 |
133.16 ± 5.00 |
| MX3 |
-0.635 ± 0.097 |
0.770 ± 0.080 |
0.054 ± 0.054 |
3.11 ± 8.41 |
129.51 ± 7.19 |
| RH08 |
-0.770 ± 0.006 |
-0.637 ± 0.008 |
0.017 ± 0.017 |
0.96 ± 0.52 |
219.61 ± 0.58 |
| RH09 |
-0.770 ± 0.033 |
-0.637 ± 0.040 |
0.017 ± 0.017 |
0.96 ± 2.28 |
219.61 ± 3.00 |
| RH10 |
-0.770 ± 0.035 |
-0.637 ± 0.043 |
0.017 ± 0.017 |
0.96 ± 2.43 |
219.61 ± 3.19 |
| Average |
-0.722 |
0.186 |
0.088 |
5.150 |
167.016 |
| Median |
-0.732 |
0.673 |
0.047 |
2.710 |
146.856 |
| Deviation |
0.085 |
0.685 |
0.152 |
9.082 |
43.873 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
32.1 ± 5.9 |
1062.1 ± 321.0 |
1.37 ± 0.11 |
| VC |
58.9 ± 6.1 |
1055.9 ± 373.0 |
1.37 ± 0.11 |
| MX1 |
33.4 ± 6.1 |
1040.8 ± 333.9 |
1.37 ± 0.11 |
| MX2 |
34.6 ± 6.0 |
1022.7 ± 336.4 |
1.37 ± 0.11 |
| MX3 |
36.1 ± 5.9 |
987.7 ± 337.5 |
1.37 ± 0.11 |
| RH08 |
77.6 ± 2.5 |
481.4 ± 75.6 |
1.37 ± 0.11 |
| RH09 |
77.6 ± 2.5 |
481.4 ± 75.6 |
1.37 ± 0.11 |
| RH10 |
77.6 ± 2.5 |
481.4 ± 75.6 |
1.37 ± 0.11 |
| Average |
53.5 |
826.7 |
1.37 |
| Median |
58.9 |
1022.7 |
1.37 |
| Deviation |
21.7 |
286.8 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
588.9 ± 7.1 |
43.6 ± 3.8 |
115.6 ± 8.5 |
139.7 ± 9.7 |
13.59 ± 1.24 |
4.23 ± 0.30 |
| VC |
716.2 ± 11.0 |
25.8 ± 2.1 |
70.4 ± 5.2 |
144.1 ± 9.6 |
27.97 ± 2.45 |
4.99 ± 0.34 |
| MX1 |
634.4 ± 7.6 |
43.0 ± 3.7 |
113.9 ± 8.3 |
140.0 ± 9.7 |
14.87 ± 1.35 |
4.55 ± 0.32 |
| MX2 |
646.8 ± 7.8 |
42.3 ± 3.6 |
112.3 ± 8.2 |
140.2 ± 9.7 |
15.40 ± 1.39 |
4.63 ± 0.33 |
| MX3 |
641.6 ± 8.0 |
41.5 ± 3.6 |
110.3 ± 8.1 |
140.4 ± 9.7 |
15.58 ± 1.40 |
4.59 ± 0.33 |
| RH8 |
-0.2 ± 8.6 |
10.6 ± 0.8 |
29.2 ± 2.1 |
146.1 ± 9.5 |
-0.01 ± 0.90 |
-0.00 ± 0.06 |
| RH9 |
-0.2 ± 8.6 |
10.6 ± 0.8 |
29.2 ± 2.1 |
146.1 ± 9.5 |
-0.01 ± 0.90 |
-0.00 ± 0.06 |
| RH10 |
-0.2 ± 8.6 |
10.6 ± 0.8 |
29.2 ± 2.1 |
146.1 ± 9.5 |
-0.01 ± 0.90 |
-0.00 ± 0.06 |
| Average |
403.4 |
28.5 |
76.3 |
142.8 |
10.9 |
2.9 |
| Median |
634.4 |
41.5 |
110.3 |
144.1 |
14.9 |
4.6 |
| Deviation |
336.0 |
15.9 |
41.6 |
3.0 |
10.1 |
2.4 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
425.0 ± 10.5 |
100.9 ± 5.4 |
173.8 ± 16.7 |
220.2 ± 16.9 |
4.22 ± 0.27 |
1.94 ± 0.14 |
| VC |
526.6 ± 15.3 |
57.5 ± 2.8 |
105.9 ± 10.2 |
235.4 ± 16.1 |
9.18 ± 0.55 |
2.24 ± 0.12 |
| MX1 |
463.9 ± 12.8 |
99.1 ± 5.3 |
171.3 ± 16.5 |
221.0 ± 16.9 |
4.69 ± 0.30 |
2.11 ± 0.14 |
| MX2 |
475.0 ± 13.8 |
97.4 ± 5.2 |
168.9 ± 16.2 |
221.8 ± 16.8 |
4.89 ± 0.31 |
2.15 ± 0.14 |
| MX3 |
469.3 ± 14.8 |
95.2 ± 5.0 |
165.9 ± 16.0 |
222.7 ± 16.7 |
4.94 ± 0.31 |
2.11 ± 0.14 |
| RH8 |
-3.7 ± 19.5 |
23.3 ± 1.1 |
44.0 ± 4.2 |
241.2 ± 15.9 |
-0.15 ± 0.82 |
-0.01 ± 0.08 |
| RH9 |
-3.7 ± 19.5 |
23.3 ± 1.1 |
44.0 ± 4.2 |
241.2 ± 15.9 |
-0.15 ± 0.82 |
-0.01 ± 0.08 |
| RH10 |
-3.7 ± 19.5 |
23.3 ± 1.1 |
44.0 ± 4.2 |
241.2 ± 15.9 |
-0.15 ± 0.82 |
-0.01 ± 0.08 |
| Average |
293.6 |
65.0 |
114.7 |
230.6 |
3.4 |
1.3 |
| Median |
463.9 |
95.2 |
165.9 |
235.4 |
4.7 |
2.1 |
| Deviation |
247.7 |
37.2 |
62.5 |
10.0 |
3.3 |
1.1 |
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)
| 
