Database: Ace Shock Analysis
Event ID: 20012941612
Observation time: 10/21/2001 294.67529 1612 [UT]
|
|
General
Information (About, Top)
| Year |
2001 |
| Fractional day of year |
294.675289 |
| Arrival time of shock [seconds of day] |
58345.0 ± 27.0 |
| 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] |
-0.004 |
| Upstream plasma points selected for analysis |
0012 |
| Upstream field points selected for analysis |
0048 |
| Downstream plasma points selected for analysis |
0009
|
| Downstream field points selected for analysis |
0033 |
| Minimum chisq/dof for RH8,RH9,RH10 |
12.69, 15.72, 16.31 |
Event added to database
|
Sat Apr 30 21:52:50 2005
|
Event last processed
|
Tue May 3 14:08:05 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.005 ± 0.000
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-381.9 ± 5.9 |
-549.0 ± 10.0 |
| Vy GSE [km/s] |
18.7 ± 4.5 |
-74.3 ± 19.7 |
| Vz GSE [km/s] |
17.2 ± 3.5 |
-26.4 ± 26.9 |
| Wi [km/s] |
46.5 ± 1.4 |
78.7 ± 2.7 |
| We [km/s] |
1471.2 ± 43.3 |
2489.1 ± 86.9 |
| Ni [n/cc] |
9.8 ± 0.6 |
29.3 ± 3.8 |
| Bx GSE [nT] |
-1.7 ± 0.6 |
0.4 ± 0.6 |
| By GSE [nT] |
-1.5 ± 0.7 |
18.8 ± 3.6 |
| Bz GSE [nT] |
-7.5 ± 0.7 |
4.7 ± 10.1 |
Plasma Beta
|
0.719 ± 0.703
|
0.814 ± 0.724
|
Sound Speed [km/s]
|
60.06 ± 1.77
|
101.62 ± 3.55
|
Alfven Speed [km/s]
|
55.18 ± 2.93
|
88.66 ± 9.01
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.467 ± 0.372 |
0.403 ± 0.393 |
-0.787 ± 0.559 |
-51.94 ± 22.02 |
139.24 ± 41.70 |
| VC |
-0.853 ± 0.057 |
-0.474 ± 0.094 |
-0.217 ± 0.214 |
-12.56 ± 7.21 |
209.07 ± 6.25 |
| MX1 |
-0.804 ± 0.342 |
-0.421 ± 0.402 |
0.420 ± 0.393 |
24.83 ± 43.08 |
207.66 ± 26.70 |
| MX2 |
-0.998 ± 0.010 |
0.033 ± 0.127 |
-0.047 ± 0.047 |
-2.67 ± 11.09 |
178.09 ± 7.29 |
| MX3 |
-0.995 ± 0.015 |
-0.040 ± 0.147 |
0.087 ± 0.087 |
4.99 ± 9.21 |
182.32 ± 8.44 |
| RH08 |
-0.938 ± 0.003 |
-0.279 ± 0.008 |
-0.207 ± 0.204 |
-11.93 ± 0.53 |
196.55 ± 0.50 |
| RH09 |
-0.943 ± 0.023 |
0.262 ± 0.064 |
0.207 ± 0.204 |
11.93 ± 4.01 |
164.46 ± 3.87 |
| RH10 |
-0.947 ± 0.023 |
0.263 ± 0.068 |
0.184 ± 0.182 |
10.62 ± 4.00 |
164.46 ± 4.11 |
| Average |
-0.868 |
-0.032 |
-0.045 |
-3.341 |
180.230 |
| Median |
-0.938 |
0.033 |
0.087 |
4.990 |
182.321 |
| Deviation |
0.175 |
0.333 |
0.370 |
23.336 |
24.014 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
38.9 ± 5.6 |
288.9 ± 18.6 |
3.09 ± 0.45 |
| VC |
60.9 ± 4.3 |
609.0 ± 22.9 |
3.09 ± 0.45 |
| MX1 |
81.9 ± 4.4 |
545.6 ± 23.5 |
3.09 ± 0.45 |
| MX2 |
74.9 ± 4.4 |
631.4 ± 21.4 |
3.09 ± 0.45 |
| MX3 |
81.6 ± 4.3 |
632.7 ± 23.2 |
3.09 ± 0.45 |
| RH08 |
62.7 ± 4.2 |
643.6 ± 20.2 |
3.09 ± 0.45 |
| RH09 |
87.9 ± 4.6 |
552.4 ± 30.3 |
3.09 ± 0.45 |
| RH10 |
89.1 ± 4.6 |
556.6 ± 29.7 |
3.09 ± 0.45 |
| Average |
72.2 |
557.5 |
3.09 |
| Median |
81.6 |
609.0 |
3.09 |
| Deviation |
17.1 |
115.6 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
116.6 ± 4.9 |
34.9 ± 1.0 |
42.9 ± 2.3 |
73.8 ± 1.7 |
3.34 ± 0.14 |
1.58 ± 0.06 |
| VC |
295.8 ± 6.5 |
20.4 ± 0.6 |
26.9 ± 1.4 |
79.0 ± 1.8 |
14.51 ± 0.55 |
3.75 ± 0.12 |
| MX1 |
239.2 ± 5.7 |
5.7 ± 0.2 |
7.8 ± 0.4 |
81.4 ± 1.9 |
41.79 ± 1.69 |
2.94 ± 0.11 |
| MX2 |
250.3 ± 5.9 |
10.6 ± 0.3 |
14.3 ± 0.8 |
80.9 ± 1.9 |
23.55 ± 0.84 |
3.09 ± 0.10 |
| MX3 |
251.8 ± 5.8 |
5.9 ± 0.2 |
8.1 ± 0.4 |
81.4 ± 1.9 |
42.41 ± 1.54 |
3.10 ± 0.10 |
| RH8 |
294.1 ± 6.5 |
19.1 ± 0.5 |
25.3 ± 1.3 |
79.3 ± 1.8 |
15.40 ± 0.56 |
3.71 ± 0.12 |
| RH9 |
183.9 ± 4.8 |
1.5 ± 0.0 |
2.1 ± 0.1 |
81.6 ± 1.9 |
121.94 ± 4.34 |
2.25 ± 0.07 |
| RH10 |
186.9 ± 4.8 |
0.6 ± 0.0 |
0.8 ± 0.0 |
81.6 ± 1.9 |
303.36 ± 10.77 |
2.29 ± 0.07 |
| Average |
227.3 |
12.4 |
16.0 |
79.9 |
70.8 |
2.8 |
| Median |
250.3 |
10.6 |
14.3 |
81.4 |
41.8 |
3.1 |
| Deviation |
61.2 |
11.7 |
14.6 |
2.7 |
101.0 |
0.8 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
41.7 ± 12.9 |
57.1 ± 3.6 |
69.0 ± 7.0 |
122.4 ± 5.1 |
0.73 ± 0.21 |
0.34 ± 0.10 |
| VC |
99.7 ± 8.2 |
33.4 ± 2.0 |
43.2 ± 4.4 |
130.8 ± 5.8 |
2.99 ± 0.25 |
0.76 ± 0.06 |
| MX1 |
84.0 ± 11.5 |
9.4 ± 0.6 |
12.5 ± 1.3 |
134.7 ± 6.1 |
9.01 ± 1.61 |
0.63 ± 0.10 |
| MX2 |
84.6 ± 9.6 |
17.4 ± 1.0 |
23.0 ± 2.3 |
133.9 ± 6.0 |
4.88 ± 0.71 |
0.63 ± 0.09 |
| MX3 |
85.6 ± 11.1 |
9.7 ± 0.6 |
12.9 ± 1.3 |
134.7 ± 6.0 |
8.84 ± 1.46 |
0.64 ± 0.10 |
| RH8 |
102.6 ± 5.2 |
31.3 ± 1.9 |
40.6 ± 4.1 |
131.4 ± 5.8 |
3.28 ± 0.24 |
0.78 ± 0.05 |
| RH9 |
59.9 ± 19.0 |
2.5 ± 0.1 |
3.3 ± 0.3 |
135.0 ± 6.1 |
24.46 ± 8.34 |
0.45 ± 0.15 |
| RH10 |
61.2 ± 18.5 |
1.0 ± 0.1 |
1.3 ± 0.1 |
135.0 ± 6.1 |
61.22 ± 19.98 |
0.46 ± 0.15 |
| Average |
77.4 |
20.2 |
25.7 |
132.2 |
14.4 |
0.6 |
| Median |
84.6 |
17.4 |
23.0 |
134.7 |
8.8 |
0.6 |
| Deviation |
21.2 |
19.2 |
23.4 |
4.3 |
20.3 |
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)
| 
