Database: Ace Shock Analysis
Event ID: 20022301810
Observation time: 08/18/2002 230.75725 1810 [UT]
|
|
General
Information (About, Top)
| Year |
2002 |
| Fractional day of year |
230.757245 |
| Arrival time of shock [seconds of day] |
65426.0 ± 26.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.037 |
| Y GSE location of spacecraft [Re] |
-0.006 |
| Z GSE location of spacecraft [Re] |
0.002 |
| Upstream plasma points selected for analysis |
0010 |
| Upstream field points selected for analysis |
0038 |
| Downstream plasma points selected for analysis |
0010
|
| Downstream field points selected for analysis |
0044 |
| Minimum chisq/dof for RH8,RH9,RH10 |
4.87, 15.03, 15.25 |
Event added to database
|
Sun May 1 22:38:09 2005
|
Event last processed
|
Tue May 3 14:34:04 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.006 ± 0.000
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-424.4 ± 8.5 |
-579.4 ± 5.8 |
| Vy GSE [km/s] |
-5.6 ± 4.9 |
10.5 ± 11.6 |
| Vz GSE [km/s] |
18.5 ± 7.4 |
80.9 ± 13.2 |
| Wi [km/s] |
37.9 ± 2.8 |
75.8 ± 2.5 |
| We [km/s] |
1199.6 ± 87.9 |
2396.3 ± 77.7 |
| Ni [n/cc] |
3.9 ± 0.8 |
15.8 ± 2.0 |
| Bx GSE [nT] |
-0.7 ± 1.0 |
0.0 ± 3.6 |
| By GSE [nT] |
2.8 ± 0.9 |
6.5 ± 1.6 |
| Bz GSE [nT] |
0.3 ± 0.5 |
2.0 ± 3.7 |
Plasma Beta
|
1.211 ± 1.286
|
2.872 ± 2.976
|
Sound Speed [km/s]
|
48.98 ± 3.59
|
97.83 ± 3.17
|
Alfven Speed [km/s]
|
35.18 ± 3.45
|
46.42 ± 7.48
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.938 ± 0.328 |
0.345 ± 0.891 |
0.041 ± 0.041 |
2.34 ± 27.47 |
159.80 ± 54.45 |
| VC |
-0.925 ± 0.026 |
0.097 ± 0.072 |
0.367 ± 0.350 |
21.55 ± 3.95 |
174.04 ± 4.45 |
| MX1 |
-0.939 ± 0.089 |
-0.015 ± 0.615 |
0.344 ± 0.330 |
20.12 ± 14.75 |
180.93 ± 37.52 |
| MX2 |
-0.881 ± 0.074 |
0.047 ± 0.391 |
0.470 ± 0.432 |
28.07 ± 8.68 |
176.94 ± 25.44 |
| MX3 |
-0.852 ± 0.105 |
0.071 ± 0.329 |
0.519 ± 0.466 |
31.27 ± 11.26 |
175.22 ± 22.10 |
| RH08 |
-0.980 ± 0.002 |
0.026 ± 0.012 |
0.196 ± 0.193 |
11.28 ± 0.68 |
178.50 ± 0.71 |
| RH09 |
-0.977 ± 0.015 |
-0.164 ± 0.069 |
-0.140 ± 0.139 |
-8.03 ± 4.02 |
189.53 ± 4.07 |
| RH10 |
-0.978 ± 0.015 |
-0.164 ± 0.069 |
-0.128 ± 0.128 |
-7.38 ± 4.01 |
189.53 ± 4.07 |
| Average |
-0.934 |
0.030 |
0.209 |
12.402 |
178.059 |
| Median |
-0.938 |
0.047 |
0.344 |
20.121 |
178.496 |
| Deviation |
0.047 |
0.162 |
0.260 |
15.380 |
9.488 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
55.5 ± 20.0 |
600.9 ± 21.3 |
4.20 ± 1.06 |
| VC |
68.9 ± 21.2 |
620.1 ± 25.4 |
4.20 ± 1.06 |
| MX1 |
74.7 ± 22.5 |
624.2 ± 24.7 |
4.20 ± 1.06 |
| MX2 |
71.8 ± 20.2 |
601.0 ± 26.3 |
4.20 ± 1.06 |
| MX3 |
70.8 ± 19.3 |
587.5 ± 26.8 |
4.20 ± 1.06 |
| RH08 |
72.3 ± 24.1 |
637.2 ± 22.8 |
4.20 ± 1.06 |
| RH09 |
83.8 ± 27.2 |
599.4 ± 16.2 |
4.20 ± 1.06 |
| RH10 |
83.7 ± 27.2 |
601.3 ± 16.4 |
4.20 ± 1.06 |
| Average |
72.7 |
608.9 |
4.20 |
| Median |
72.3 |
601.3 |
4.20 |
| Deviation |
9.0 |
16.4 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
204.1 ± 7.4 |
16.7 ± 1.0 |
19.9 ± 2.0 |
58.1 ± 2.7 |
12.25 ± 0.80 |
3.52 ± 0.21 |
| VC |
221.2 ± 9.7 |
10.4 ± 0.6 |
12.7 ± 1.2 |
59.5 ± 2.7 |
21.33 ± 1.39 |
3.72 ± 0.23 |
| MX1 |
219.3 ± 9.9 |
7.6 ± 0.4 |
9.3 ± 0.9 |
60.0 ± 2.7 |
29.05 ± 1.87 |
3.66 ± 0.23 |
| MX2 |
218.6 ± 10.0 |
9.0 ± 0.5 |
11.0 ± 1.1 |
59.8 ± 2.7 |
24.45 ± 1.61 |
3.66 ± 0.23 |
| MX3 |
216.8 ± 10.0 |
9.5 ± 0.6 |
11.6 ± 1.1 |
59.7 ± 2.7 |
22.98 ± 1.53 |
3.64 ± 0.23 |
| RH8 |
217.6 ± 9.3 |
8.7 ± 0.5 |
10.7 ± 1.1 |
59.8 ± 2.7 |
25.01 ± 1.58 |
3.65 ± 0.22 |
| RH9 |
186.6 ± 8.1 |
3.1 ± 0.2 |
3.8 ± 0.4 |
60.4 ± 2.7 |
60.82 ± 3.63 |
3.10 ± 0.17 |
| RH10 |
187.7 ± 8.2 |
3.1 ± 0.2 |
3.8 ± 0.4 |
60.4 ± 2.7 |
60.53 ± 3.62 |
3.11 ± 0.17 |
| Average |
209.0 |
8.5 |
10.4 |
59.7 |
32.1 |
3.5 |
| Median |
217.6 |
9.0 |
11.0 |
59.8 |
25.0 |
3.6 |
| Deviation |
14.4 |
4.3 |
5.1 |
0.7 |
18.3 |
0.3 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
50.6 ± 7.0 |
24.2 ± 3.2 |
26.3 ± 4.2 |
105.7 ± 2.9 |
2.11 ± 0.33 |
0.48 ± 0.07 |
| VC |
53.3 ± 9.0 |
15.2 ± 2.0 |
16.7 ± 2.7 |
107.4 ± 3.1 |
3.56 ± 0.72 |
0.50 ± 0.09 |
| MX1 |
52.6 ± 8.7 |
11.1 ± 1.4 |
12.3 ± 2.0 |
107.9 ± 3.2 |
4.82 ± 1.00 |
0.49 ± 0.09 |
| MX2 |
51.9 ± 9.9 |
13.1 ± 1.7 |
14.5 ± 2.3 |
107.7 ± 3.2 |
4.02 ± 0.90 |
0.48 ± 0.10 |
| MX3 |
51.2 ± 10.3 |
13.8 ± 1.8 |
15.3 ± 2.5 |
107.6 ± 3.1 |
3.76 ± 0.88 |
0.48 ± 0.10 |
| RH8 |
53.0 ± 7.4 |
12.8 ± 1.6 |
14.1 ± 2.3 |
107.8 ± 3.2 |
4.22 ± 0.77 |
0.49 ± 0.07 |
| RH9 |
46.6 ± 5.2 |
4.5 ± 0.6 |
5.0 ± 0.8 |
108.4 ± 3.3 |
10.49 ± 1.80 |
0.43 ± 0.05 |
| RH10 |
46.7 ± 5.2 |
4.6 ± 0.6 |
5.1 ± 0.8 |
108.4 ± 3.3 |
10.42 ± 1.79 |
0.43 ± 0.05 |
| Average |
50.7 |
12.4 |
13.7 |
107.6 |
5.4 |
0.5 |
| Median |
51.9 |
13.1 |
14.5 |
107.8 |
4.2 |
0.5 |
| Deviation |
2.7 |
6.3 |
6.8 |
0.8 |
3.2 |
0.0 |
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)
| 
