Database: Ace Shock Analysis
Event ID: 20082212252
Observation time: 08/08/2008 221.95293 2252 [UT]
|
|
General
Information (About, Top)
| Year |
2008 |
| Fractional day of year |
221.952935 |
| Arrival time of shock [seconds of day] |
82333.6 ± 60.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
232.771 |
| Y GSE location of spacecraft [Re] |
39.705 |
| Z GSE location of spacecraft [Re] |
7.961 |
| Upstream plasma points selected for analysis |
0012 |
| Upstream field points selected for analysis |
0758 |
| Downstream plasma points selected for analysis |
0009
|
| Downstream field points selected for analysis |
0546 |
| Minimum chisq/dof for RH8,RH9,RH10 |
6.04, 14.81, 15.17 |
Event added to database
|
Wed Oct 15 10:55:24 2014
|
Event last processed
|
Wed Oct 15 13:09:23 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
60.401 ± 2.292
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-375.1 ± 1.3 |
-394.5 ± 10.7 |
| Vy GSE [km/s] |
-7.9 ± 2.0 |
-22.0 ± 15.6 |
| Vz GSE [km/s] |
-37.7 ± 4.6 |
-50.1 ± 11.9 |
| Wi [km/s] |
17.8 ± 0.8 |
28.9 ± 2.0 |
| We [km/s] |
563.2 ± 24.2 |
914.6 ± 61.9 |
| Ni [n/cc] |
6.6 ± 0.6 |
10.7 ± 0.9 |
| Bx GSE [nT] |
-1.5 ± 0.3 |
0.7 ± 1.5 |
| By GSE [nT] |
-7.4 ± 0.8 |
-7.4 ± 1.7 |
| Bz GSE [nT] |
2.7 ± 1.5 |
10.5 ± 1.2 |
Plasma Beta
|
0.066 ± 0.066
|
0.112 ± 0.110
|
Sound Speed [km/s]
|
22.99 ± 0.99
|
37.34 ± 2.53
|
Alfven Speed [km/s]
|
69.73 ± 3.41
|
87.36 ± 4.91
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.322 ± 0.207 |
-0.941 ± 0.072 |
0.101 ± 0.101 |
5.83 ± 8.95 |
251.09 ± 12.59 |
| VC |
-0.796 ± 0.341 |
-0.507 ± 0.512 |
-0.331 ± 0.318 |
-19.33 ± 22.73 |
212.50 ± 36.50 |
| MX1 |
-0.485 ± 0.427 |
-0.874 ± 0.237 |
0.037 ± 0.037 |
2.12 ± 12.73 |
240.95 ± 27.99 |
| MX2 |
-0.736 ± 0.463 |
-0.677 ± 0.503 |
-0.002 ± 0.002 |
-0.10 ± 10.97 |
222.63 ± 39.15 |
| MX3 |
-0.767 ± 0.430 |
-0.642 ± 0.514 |
0.014 ± 0.014 |
0.78 ± 12.82 |
219.92 ± 38.37 |
| RH08 |
-0.968 ± 0.005 |
-0.180 ± 0.022 |
0.173 ± 0.171 |
9.97 ± 1.03 |
190.53 ± 1.30 |
| RH09 |
-0.848 ± 0.037 |
-0.424 ± 0.064 |
0.318 ± 0.307 |
18.57 ± 3.99 |
206.57 ± 4.26 |
| RH10 |
-0.862 ± 0.036 |
-0.412 ± 0.064 |
0.296 ± 0.287 |
17.22 ± 3.98 |
205.57 ± 4.24 |
| Average |
-0.723 |
-0.582 |
0.076 |
4.383 |
218.720 |
| Median |
-0.767 |
-0.507 |
0.101 |
5.825 |
219.922 |
| Deviation |
0.214 |
0.253 |
0.205 |
11.951 |
19.684 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
16.4 ± 10.8 |
180.2 ± 3.0 |
1.62 ± 0.21 |
| VC |
59.7 ± 7.8 |
392.7 ± 3.7 |
1.62 ± 0.21 |
| MX1 |
25.5 ± 9.0 |
250.0 ± 3.0 |
1.62 ± 0.21 |
| MX2 |
41.0 ± 6.0 |
350.0 ± 3.0 |
1.62 ± 0.21 |
| MX3 |
42.9 ± 5.4 |
360.3 ± 3.0 |
1.62 ± 0.21 |
| RH08 |
66.2 ± 1.7 |
399.5 ± 3.4 |
1.62 ± 0.21 |
| RH09 |
49.6 ± 1.7 |
351.9 ± 2.7 |
1.62 ± 0.21 |
| RH10 |
50.7 ± 1.6 |
359.1 ± 28.7 |
1.62 ± 0.21 |
| Average |
44.0 |
330.5 |
1.62 |
| Median |
49.6 |
359.1 |
1.62 |
| Deviation |
16.6 |
75.8 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
55.6 ± 1.7 |
22.0 ± 0.9 |
66.9 ± 3.3 |
70.1 ± 3.4 |
2.54 ± 0.17 |
0.80 ± 0.04 |
| VC |
77.7 ± 2.2 |
11.1 ± 0.4 |
35.2 ± 1.7 |
72.6 ± 3.2 |
6.99 ± 0.39 |
1.07 ± 0.06 |
| MX1 |
62.5 ± 1.7 |
20.5 ± 0.9 |
63.0 ± 3.1 |
70.5 ± 3.4 |
3.05 ± 0.19 |
0.89 ± 0.05 |
| MX2 |
68.6 ± 1.6 |
16.9 ± 0.7 |
52.6 ± 2.6 |
71.5 ± 3.3 |
4.06 ± 0.22 |
0.96 ± 0.05 |
| MX3 |
68.1 ± 1.5 |
16.4 ± 0.7 |
51.0 ± 2.5 |
71.6 ± 3.3 |
4.16 ± 0.23 |
0.95 ± 0.05 |
| RH8 |
41.4 ± 1.7 |
8.9 ± 0.3 |
28.1 ± 1.4 |
72.9 ± 3.2 |
4.69 ± 0.27 |
0.57 ± 0.03 |
| RH9 |
42.5 ± 2.0 |
14.4 ± 0.6 |
45.2 ± 2.2 |
72.0 ± 3.3 |
2.95 ± 0.19 |
0.59 ± 0.03 |
| RH10 |
43.8 ± 1.9 |
14.1 ± 0.6 |
44.1 ± 2.2 |
72.1 ± 3.3 |
3.12 ± 0.20 |
0.61 ± 0.03 |
| Average |
57.5 |
15.5 |
48.3 |
71.6 |
3.9 |
0.8 |
| Median |
62.5 |
16.4 |
51.0 |
72.0 |
4.1 |
0.9 |
| Deviation |
13.8 |
4.4 |
13.1 |
1.0 |
1.4 |
0.2 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
37.3 ± 11.7 |
35.5 ± 2.3 |
83.8 ± 4.7 |
88.1 ± 4.8 |
1.05 ± 0.30 |
0.42 ± 0.14 |
| VC |
51.0 ± 10.0 |
17.6 ± 0.9 |
44.0 ± 2.5 |
93.4 ± 4.2 |
2.88 ± 0.40 |
0.55 ± 0.12 |
| MX1 |
41.2 ± 10.7 |
33.0 ± 2.1 |
78.9 ± 4.4 |
89.1 ± 4.7 |
1.24 ± 0.27 |
0.46 ± 0.13 |
| MX2 |
44.7 ± 8.3 |
27.0 ± 1.5 |
65.9 ± 3.7 |
91.1 ± 4.4 |
1.65 ± 0.21 |
0.49 ± 0.10 |
| MX3 |
44.3 ± 7.8 |
26.1 ± 1.5 |
64.0 ± 3.6 |
91.4 ± 4.4 |
1.69 ± 0.21 |
0.49 ± 0.10 |
| RH8 |
22.3 ± 9.2 |
14.0 ± 0.7 |
35.2 ± 2.0 |
94.0 ± 4.2 |
1.59 ± 0.65 |
0.24 ± 0.11 |
| RH9 |
24.1 ± 6.3 |
22.9 ± 1.3 |
56.6 ± 3.2 |
92.3 ± 4.3 |
1.05 ± 0.26 |
0.26 ± 0.08 |
| RH10 |
25.0 ± 6.5 |
22.3 ± 1.2 |
55.3 ± 3.1 |
92.4 ± 4.3 |
1.12 ± 0.27 |
0.27 ± 0.08 |
| Average |
36.2 |
24.8 |
60.5 |
91.5 |
1.5 |
0.4 |
| Median |
41.2 |
26.1 |
64.0 |
92.3 |
1.6 |
0.5 |
| Deviation |
11.0 |
7.3 |
16.4 |
2.0 |
0.6 |
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)
| 
