Database: Ace Shock Analysis
Event ID: 20012570118
Observation time: 09/14/2001 257.05424 0118 [UT]
|
|
General
Information (About, Top)
| Year |
2001 |
| Fractional day of year |
257.054236 |
| Arrival time of shock [seconds of day] |
4686.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
| X GSE location of spacecraft [Re] |
0.036 |
| Y GSE location of spacecraft [Re] |
-0.005 |
| Z GSE location of spacecraft [Re] |
-0.000 |
| Upstream plasma points selected for analysis |
0012 |
| Upstream field points selected for analysis |
0049 |
| Downstream plasma points selected for analysis |
0016
|
| Downstream field points selected for analysis |
0061 |
| Minimum chisq/dof for RH8,RH9,RH10 |
9.19, 13.22, 13.46 |
Event added to database
|
Sat Apr 30 21:52:13 2005
|
Event last processed
|
Tue May 3 14:04:03 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.007 ± 0.000
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-369.6 ± 2.3 |
-431.4 ± 2.1 |
| Vy GSE [km/s] |
7.0 ± 1.2 |
-44.7 ± 5.2 |
| Vz GSE [km/s] |
14.0 ± 3.3 |
27.7 ± 3.3 |
| Wi [km/s] |
16.1 ± 0.7 |
33.8 ± 2.3 |
| We [km/s] |
507.8 ± 21.9 |
1069.8 ± 73.2 |
| Ni [n/cc] |
7.1 ± 0.7 |
16.9 ± 1.3 |
| Bx GSE [nT] |
3.4 ± 0.4 |
5.6 ± 0.3 |
| By GSE [nT] |
-0.7 ± 0.5 |
-6.0 ± 0.9 |
| Bz GSE [nT] |
5.0 ± 0.5 |
13.8 ± 0.6 |
Plasma Beta
|
0.105 ± 0.108
|
0.158 ± 0.162
|
Sound Speed [km/s]
|
20.73 ± 0.90
|
43.67 ± 2.99
|
Alfven Speed [km/s]
|
50.17 ± 4.48
|
85.32 ± 5.69
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.725 ± 0.143 |
-0.657 ± 0.157 |
-0.207 ± 0.204 |
-11.96 ± 6.84 |
222.17 ± 12.35 |
| VC |
-0.757 ± 0.034 |
-0.632 ± 0.040 |
0.168 ± 0.167 |
9.68 ± 3.37 |
219.85 ± 2.98 |
| MX1 |
-0.844 ± 0.027 |
-0.529 ± 0.042 |
-0.092 ± 0.092 |
-5.29 ± 4.10 |
212.08 ± 2.84 |
| MX2 |
-0.852 ± 0.030 |
-0.517 ± 0.048 |
-0.082 ± 0.082 |
-4.69 ± 3.97 |
211.26 ± 3.23 |
| MX3 |
-0.857 ± 0.031 |
-0.510 ± 0.052 |
-0.076 ± 0.075 |
-4.34 ± 3.99 |
210.79 ± 3.45 |
| RH08 |
-0.947 ± 0.011 |
-0.318 ± 0.033 |
0.039 ± 0.039 |
2.24 ± 2.00 |
198.55 ± 2.00 |
| RH09 |
-0.962 ± 0.018 |
-0.268 ± 0.065 |
0.050 ± 0.050 |
2.88 ± 3.98 |
195.54 ± 3.88 |
| RH10 |
-0.966 ± 0.018 |
-0.251 ± 0.066 |
0.061 ± 0.061 |
3.52 ± 3.97 |
194.54 ± 3.90 |
| Average |
-0.864 |
-0.460 |
-0.017 |
-0.993 |
208.098 |
| Median |
-0.852 |
-0.510 |
0.039 |
2.241 |
211.265 |
| Deviation |
0.091 |
0.160 |
0.118 |
6.796 |
10.701 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
60.0 ± 7.1 |
392.7 ± 15.8 |
2.45 ± 0.27 |
| VC |
77.6 ± 7.5 |
419.1 ± 15.9 |
2.45 ± 0.27 |
| MX1 |
60.8 ± 7.5 |
443.6 ± 15.6 |
2.45 ± 0.27 |
| MX2 |
61.0 ± 7.5 |
447.0 ± 15.6 |
2.45 ± 0.27 |
| MX3 |
61.1 ± 7.5 |
449.0 ± 15.5 |
2.45 ± 0.27 |
| RH08 |
62.4 ± 7.3 |
479.7 ± 14.4 |
2.45 ± 0.27 |
| RH09 |
62.1 ± 7.2 |
483.2 ± 14.0 |
2.45 ± 0.27 |
| RH10 |
62.4 ± 7.2 |
483.9 ± 13.9 |
2.45 ± 0.27 |
| Average |
63.4 |
449.8 |
2.45 |
| Median |
62.1 |
449.0 |
2.45 |
| Deviation |
5.8 |
32.5 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
132.3 ± 2.9 |
9.7 ± 0.3 |
25.1 ± 2.2 |
53.4 ± 4.1 |
13.62 ± 0.49 |
2.49 ± 0.23 |
| VC |
141.5 ± 1.9 |
4.1 ± 0.1 |
10.7 ± 1.0 |
54.2 ± 4.1 |
34.52 ± 1.14 |
2.63 ± 0.22 |
| MX1 |
136.8 ± 2.7 |
9.5 ± 0.3 |
24.5 ± 2.2 |
53.5 ± 4.1 |
14.45 ± 0.50 |
2.57 ± 0.23 |
| MX2 |
137.0 ± 2.7 |
9.4 ± 0.3 |
24.3 ± 2.2 |
53.5 ± 4.1 |
14.55 ± 0.50 |
2.58 ± 0.23 |
| MX3 |
137.0 ± 2.7 |
9.4 ± 0.3 |
24.3 ± 2.2 |
53.5 ± 4.1 |
14.60 ± 0.50 |
2.58 ± 0.23 |
| RH8 |
131.3 ± 2.4 |
9.0 ± 0.3 |
23.2 ± 2.1 |
53.6 ± 4.1 |
14.63 ± 0.48 |
2.47 ± 0.22 |
| RH9 |
128.8 ± 2.3 |
9.1 ± 0.3 |
23.5 ± 2.1 |
53.6 ± 4.1 |
14.19 ± 0.46 |
2.42 ± 0.21 |
| RH10 |
127.8 ± 2.3 |
9.0 ± 0.3 |
23.2 ± 2.1 |
53.6 ± 4.1 |
14.24 ± 0.46 |
2.40 ± 0.21 |
| Average |
134.0 |
8.6 |
22.4 |
53.6 |
16.8 |
2.5 |
| Median |
136.8 |
9.4 |
24.3 |
53.6 |
14.5 |
2.6 |
| Deviation |
4.8 |
1.9 |
4.7 |
0.2 |
7.1 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
56.3 ± 3.8 |
19.9 ± 1.3 |
42.7 ± 2.8 |
93.8 ± 5.8 |
2.85 ± 0.37 |
0.60 ± 0.07 |
| VC |
59.7 ± 3.9 |
8.3 ± 0.5 |
18.3 ± 1.2 |
95.5 ± 5.9 |
7.20 ± 0.88 |
0.63 ± 0.07 |
| MX1 |
58.6 ± 3.4 |
19.3 ± 1.2 |
41.6 ± 2.8 |
93.9 ± 5.8 |
3.05 ± 0.36 |
0.63 ± 0.07 |
| MX2 |
58.6 ± 3.3 |
19.2 ± 1.2 |
41.4 ± 2.8 |
93.9 ± 5.8 |
3.07 ± 0.36 |
0.63 ± 0.07 |
| MX3 |
58.7 ± 3.3 |
19.2 ± 1.2 |
41.3 ± 2.8 |
93.9 ± 5.8 |
3.08 ± 0.36 |
0.63 ± 0.07 |
| RH8 |
55.7 ± 2.7 |
18.3 ± 1.2 |
39.5 ± 2.6 |
94.1 ± 5.8 |
3.06 ± 0.33 |
0.60 ± 0.06 |
| RH9 |
54.7 ± 2.6 |
18.5 ± 1.2 |
39.9 ± 2.7 |
94.1 ± 5.8 |
2.97 ± 0.31 |
0.59 ± 0.06 |
| RH10 |
54.2 ± 2.5 |
18.3 ± 1.2 |
39.5 ± 2.6 |
94.1 ± 5.8 |
2.97 ± 0.31 |
0.58 ± 0.06 |
| Average |
57.1 |
17.6 |
38.0 |
94.2 |
3.5 |
0.6 |
| Median |
58.6 |
19.2 |
41.3 |
94.1 |
3.1 |
0.6 |
| Deviation |
2.1 |
3.8 |
8.1 |
0.6 |
1.5 |
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)
| 
