Database: Ace Shock Analysis
Event ID: 20010310722
Observation time: 01/31/2001 31.30715 0722 [UT]
|
|
General
Information (About, Top)
| Year |
2001 |
| Fractional day of year |
31.307153 |
| Arrival time of shock [seconds of day] |
26538.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.038 |
| Y GSE location of spacecraft [Re] |
-0.002 |
| Z GSE location of spacecraft [Re] |
0.004 |
| Upstream plasma points selected for analysis |
0011 |
| Upstream field points selected for analysis |
0047 |
| Downstream plasma points selected for analysis |
0011
|
| Downstream field points selected for analysis |
0046 |
| Minimum chisq/dof for RH8,RH9,RH10 |
6.95, 12.76, 13.03 |
Event added to database
|
Sat Apr 30 21:49:11 2005
|
Event last processed
|
Tue May 3 13:48:53 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.008 ± 0.001
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-370.6 ± 2.4 |
-413.3 ± 7.4 |
| Vy GSE [km/s] |
20.4 ± 4.8 |
90.1 ± 5.5 |
| Vz GSE [km/s] |
-18.0 ± 5.2 |
11.8 ± 10.9 |
| Wi [km/s] |
36.1 ± 3.4 |
46.6 ± 4.0 |
| We [km/s] |
1143.1 ± 108.1 |
1474.0 ± 126.7 |
| Ni [n/cc] |
4.3 ± 0.8 |
17.0 ± 2.6 |
| Bx GSE [nT] |
-5.3 ± 0.1 |
-9.9 ± 0.6 |
| By GSE [nT] |
0.3 ± 0.2 |
-3.5 ± 0.6 |
| Bz GSE [nT] |
-1.7 ± 0.2 |
-6.3 ± 0.7 |
Plasma Beta
|
0.375 ± 0.370
|
0.532 ± 0.524
|
Sound Speed [km/s]
|
46.67 ± 4.41
|
60.18 ± 5.17
|
Alfven Speed [km/s]
|
59.41 ± 5.20
|
65.48 ± 7.47
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.751 ± 0.071 |
0.629 ± 0.084 |
0.200 ± 0.197 |
11.51 ± 5.96 |
140.06 ± 6.32 |
| VC |
-0.493 ± 0.082 |
0.801 ± 0.061 |
0.339 ± 0.325 |
19.81 ± 7.45 |
121.59 ± 5.65 |
| MX1 |
-0.729 ± 0.064 |
0.664 ± 0.070 |
0.165 ± 0.163 |
9.49 ± 5.13 |
137.66 ± 5.46 |
| MX2 |
-0.725 ± 0.066 |
0.671 ± 0.071 |
0.157 ± 0.156 |
9.06 ± 5.67 |
137.22 ± 5.58 |
| MX3 |
-0.722 ± 0.068 |
0.675 ± 0.073 |
0.152 ± 0.151 |
8.77 ± 6.11 |
136.92 ± 5.71 |
| RH08 |
-0.801 ± 0.006 |
0.553 ± 0.008 |
0.229 ± 0.225 |
13.24 ± 0.54 |
145.40 ± 0.58 |
| RH09 |
-0.785 ± 0.044 |
0.583 ± 0.057 |
0.207 ± 0.204 |
11.93 ± 3.97 |
143.40 ± 4.14 |
| RH10 |
-0.785 ± 0.044 |
0.583 ± 0.057 |
0.207 ± 0.204 |
11.93 ± 3.97 |
143.40 ± 4.14 |
| Average |
-0.724 |
0.645 |
0.207 |
11.967 |
138.207 |
| Median |
-0.729 |
0.664 |
0.207 |
11.929 |
140.061 |
| Deviation |
0.098 |
0.078 |
0.060 |
3.551 |
7.447 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
46.6 ± 2.5 |
397.3 ± 11.5 |
3.95 ± 0.52 |
| VC |
66.0 ± 2.4 |
308.7 ± 10.8 |
3.95 ± 0.52 |
| MX1 |
47.3 ± 2.4 |
391.3 ± 11.6 |
3.95 ± 0.52 |
| MX2 |
47.4 ± 2.4 |
390.0 ± 11.6 |
3.95 ± 0.52 |
| MX3 |
47.5 ± 2.4 |
389.0 ± 11.6 |
3.95 ± 0.52 |
| RH08 |
43.9 ± 2.6 |
410.1 ± 11.4 |
3.95 ± 0.52 |
| RH09 |
44.4 ± 2.5 |
406.9 ± 11.5 |
3.95 ± 0.52 |
| RH10 |
44.4 ± 2.5 |
406.9 ± 11.5 |
3.95 ± 0.52 |
| Average |
48.4 |
387.5 |
3.95 |
| Median |
47.3 |
397.3 |
3.95 |
| Deviation |
7.2 |
32.9 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
109.6 ± 2.6 |
26.9 ± 2.3 |
40.8 ± 3.6 |
70.7 ± 5.6 |
4.10 ± 0.39 |
1.56 ± 0.14 |
| VC |
115.8 ± 4.0 |
15.2 ± 1.3 |
24.2 ± 2.1 |
74.1 ± 5.9 |
7.66 ± 0.67 |
1.57 ± 0.13 |
| MX1 |
110.5 ± 2.7 |
26.5 ± 2.2 |
40.3 ± 3.5 |
70.8 ± 5.7 |
4.20 ± 0.40 |
1.57 ± 0.14 |
| MX2 |
110.5 ± 2.8 |
26.4 ± 2.2 |
40.2 ± 3.5 |
70.8 ± 5.7 |
4.21 ± 0.40 |
1.57 ± 0.14 |
| MX3 |
110.4 ± 2.8 |
26.4 ± 2.2 |
40.1 ± 3.5 |
70.8 ± 5.7 |
4.22 ± 0.40 |
1.57 ± 0.14 |
| RH8 |
106.0 ± 2.3 |
28.5 ± 2.4 |
42.8 ± 3.7 |
70.0 ± 5.6 |
3.75 ± 0.35 |
1.52 ± 0.13 |
| RH9 |
107.7 ± 2.4 |
28.2 ± 2.4 |
42.4 ± 3.7 |
70.1 ± 5.6 |
3.85 ± 0.36 |
1.54 ± 0.13 |
| RH10 |
107.7 ± 2.4 |
28.2 ± 2.4 |
42.4 ± 3.7 |
70.1 ± 5.6 |
3.85 ± 0.36 |
1.54 ± 0.13 |
| Average |
109.8 |
25.8 |
39.2 |
70.9 |
4.5 |
1.6 |
| Median |
110.4 |
26.9 |
40.8 |
70.8 |
4.2 |
1.6 |
| Deviation |
3.0 |
4.4 |
6.1 |
1.3 |
1.3 |
0.0 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
27.7 ± 6.4 |
32.4 ± 1.9 |
45.0 ± 5.1 |
83.1 ± 5.5 |
0.86 ± 0.21 |
0.34 ± 0.08 |
| VC |
28.9 ± 5.8 |
18.3 ± 1.1 |
26.7 ± 3.0 |
87.3 ± 5.7 |
1.58 ± 0.32 |
0.33 ± 0.06 |
| MX1 |
28.2 ± 6.2 |
31.9 ± 1.8 |
44.4 ± 5.1 |
83.3 ± 5.6 |
0.89 ± 0.21 |
0.34 ± 0.08 |
| MX2 |
28.1 ± 6.2 |
31.8 ± 1.8 |
44.3 ± 5.1 |
83.3 ± 5.6 |
0.89 ± 0.21 |
0.34 ± 0.08 |
| MX3 |
28.1 ± 6.1 |
31.8 ± 1.8 |
44.2 ± 5.0 |
83.3 ± 5.6 |
0.89 ± 0.21 |
0.34 ± 0.08 |
| RH8 |
26.5 ± 6.8 |
34.3 ± 2.0 |
47.2 ± 5.4 |
82.3 ± 5.5 |
0.78 ± 0.21 |
0.32 ± 0.09 |
| RH9 |
27.3 ± 6.6 |
33.9 ± 2.0 |
46.8 ± 5.3 |
82.5 ± 5.5 |
0.81 ± 0.21 |
0.33 ± 0.08 |
| RH10 |
27.3 ± 6.6 |
33.9 ± 2.0 |
46.8 ± 5.3 |
82.5 ± 5.5 |
0.81 ± 0.21 |
0.33 ± 0.08 |
| Average |
27.8 |
31.0 |
43.2 |
83.4 |
0.9 |
0.3 |
| Median |
28.1 |
32.4 |
45.0 |
83.3 |
0.9 |
0.3 |
| Deviation |
0.7 |
5.3 |
6.8 |
1.6 |
0.3 |
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)
| 
