Database: Ace Shock Analysis
Event ID: 20010860109
Observation time: 03/27/2001 86.04800 0109 [UT]
|
|
General
Information (About, Top)
| Year |
2001 |
| Fractional day of year |
86.047998 |
| Arrival time of shock [seconds of day] |
4147.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.035 |
| Y GSE location of spacecraft [Re] |
-0.004 |
| Z GSE location of spacecraft [Re] |
-0.001 |
| Upstream plasma points selected for analysis |
0009 |
| Upstream field points selected for analysis |
0036 |
| Downstream plasma points selected for analysis |
0007
|
| Downstream field points selected for analysis |
0030 |
| Minimum chisq/dof for RH8,RH9,RH10 |
6.40, 9.42, 9.82 |
Event added to database
|
Sat Apr 30 21:49:53 2005
|
Event last processed
|
Tue May 3 13:50:29 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.008 ± 0.002
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-360.6 ± 5.7 |
-408.0 ± 11.8 |
| Vy GSE [km/s] |
11.1 ± 4.1 |
0.7 ± 7.7 |
| Vz GSE [km/s] |
13.0 ± 8.9 |
-75.1 ± 9.3 |
| Wi [km/s] |
30.8 ± 1.6 |
51.4 ± 2.7 |
| We [km/s] |
974.2 ± 50.9 |
1624.0 ± 85.5 |
| Ni [n/cc] |
5.6 ± 0.4 |
25.9 ± 2.3 |
| Bx GSE [nT] |
1.1 ± 1.1 |
-1.5 ± 3.9 |
| By GSE [nT] |
-1.6 ± 2.2 |
-9.9 ± 1.0 |
| Bz GSE [nT] |
-1.4 ± 2.0 |
-1.0 ± 1.6 |
Plasma Beta
|
0.881 ± 0.726
|
1.293 ± 1.300
|
Sound Speed [km/s]
|
39.77 ± 2.08
|
66.30 ± 3.49
|
Alfven Speed [km/s]
|
34.75 ± 6.41
|
46.49 ± 5.49
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.776 ± 0.413 |
-0.046 ± 0.901 |
-0.629 ± 0.529 |
-38.97 ± 37.39 |
183.40 ± 66.51 |
| VC |
-0.475 ± 0.122 |
-0.099 ± 0.064 |
-0.875 ± 0.516 |
-60.99 ± 8.10 |
191.78 ± 7.08 |
| MX1 |
-0.748 ± 0.306 |
0.083 ± 0.551 |
-0.658 ± 0.541 |
-41.16 ± 26.25 |
173.65 ± 42.09 |
| MX2 |
-0.499 ± 0.146 |
0.115 ± 0.289 |
-0.859 ± 0.529 |
-59.22 ± 8.94 |
167.04 ± 33.00 |
| MX3 |
-0.449 ± 0.180 |
0.116 ± 0.283 |
-0.886 ± 0.505 |
-62.38 ± 11.04 |
165.54 ± 35.77 |
| RH08 |
-0.791 ± 0.018 |
0.235 ± 0.019 |
-0.564 ± 0.495 |
-34.35 ± 1.77 |
163.45 ± 1.36 |
| RH09 |
-0.658 ± 0.052 |
0.122 ± 0.069 |
-0.743 ± 0.561 |
-47.99 ± 3.96 |
169.47 ± 5.94 |
| RH10 |
-0.658 ± 0.052 |
0.122 ± 0.069 |
-0.743 ± 0.561 |
-47.99 ± 3.96 |
169.47 ± 5.94 |
| Average |
-0.632 |
0.081 |
-0.745 |
-49.132 |
172.977 |
| Median |
-0.658 |
0.116 |
-0.743 |
-47.989 |
169.471 |
| Deviation |
0.140 |
0.106 |
0.122 |
10.730 |
9.772 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
86.5 ± 32.6 |
387.1 ± 7.4 |
4.64 ± 0.58 |
| VC |
71.2 ± 36.6 |
285.8 ± 7.0 |
4.64 ± 0.58 |
| MX1 |
55.8 ± 7.9 |
379.5 ± 6.2 |
4.64 ± 0.58 |
| MX2 |
76.8 ± 42.8 |
293.1 ± 6.8 |
4.64 ± 0.58 |
| MX3 |
74.6 ± 43.5 |
275.5 ± 7.3 |
4.64 ± 0.58 |
| RH08 |
52.8 ± 5.6 |
387.8 ± 5.6 |
4.64 ± 0.58 |
| RH09 |
53.3 ± 11.4 |
350.1 ± 5.8 |
4.64 ± 0.58 |
| RH10 |
53.3 ± 11.4 |
350.1 ± 5.8 |
4.64 ± 0.58 |
| Average |
65.6 |
338.6 |
4.64 |
| Median |
71.2 |
350.1 |
4.64 |
| Deviation |
13.3 |
47.1 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
115.9 ± 9.5 |
1.6 ± 0.2 |
2.1 ± 0.4 |
53.0 ± 4.6 |
74.85 ± 11.95 |
2.20 ± 0.25 |
| VC |
127.0 ± 10.0 |
8.4 ± 1.1 |
11.2 ± 2.1 |
52.3 ± 4.5 |
15.29 ± 2.40 |
2.44 ± 0.27 |
| MX1 |
117.2 ± 9.9 |
15.2 ± 1.9 |
19.5 ± 3.6 |
50.8 ± 4.2 |
7.86 ± 1.29 |
2.32 ± 0.26 |
| MX2 |
123.1 ± 10.4 |
6.0 ± 0.7 |
8.0 ± 1.5 |
52.7 ± 4.6 |
20.96 ± 3.29 |
2.35 ± 0.26 |
| MX3 |
123.8 ± 10.3 |
6.9 ± 0.9 |
9.2 ± 1.7 |
52.6 ± 4.5 |
18.15 ± 2.84 |
2.37 ± 0.26 |
| RH8 |
107.1 ± 9.7 |
16.5 ± 2.1 |
21.0 ± 3.9 |
50.4 ± 4.2 |
6.62 ± 1.11 |
2.14 ± 0.25 |
| RH9 |
121.0 ± 10.2 |
16.2 ± 2.1 |
20.7 ± 3.8 |
50.5 ± 4.2 |
7.58 ± 1.24 |
2.41 ± 0.26 |
| RH10 |
121.0 ± 10.2 |
16.2 ± 2.1 |
20.7 ± 3.8 |
50.5 ± 4.2 |
7.58 ± 1.24 |
2.41 ± 0.26 |
| Average |
119.5 |
10.9 |
14.1 |
51.6 |
19.9 |
2.3 |
| Median |
121.0 |
15.2 |
19.5 |
52.3 |
15.3 |
2.4 |
| Deviation |
6.2 |
5.8 |
7.4 |
1.1 |
22.9 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
23.3 ± 6.5 |
2.3 ± 0.2 |
2.8 ± 0.3 |
81.1 ± 1.9 |
10.17 ± 2.79 |
0.29 ± 0.08 |
| VC |
26.5 ± 5.5 |
12.3 ± 0.9 |
15.0 ± 1.8 |
80.2 ± 1.9 |
2.15 ± 0.41 |
0.33 ± 0.07 |
| MX1 |
24.7 ± 5.4 |
22.0 ± 1.7 |
26.1 ± 3.1 |
78.1 ± 1.7 |
1.12 ± 0.24 |
0.32 ± 0.06 |
| MX2 |
25.0 ± 5.2 |
8.7 ± 0.6 |
10.7 ± 1.3 |
80.7 ± 1.9 |
2.87 ± 0.54 |
0.31 ± 0.06 |
| MX3 |
25.7 ± 5.6 |
10.1 ± 0.7 |
12.3 ± 1.5 |
80.5 ± 1.9 |
2.54 ± 0.49 |
0.32 ± 0.07 |
| RH8 |
22.4 ± 4.9 |
23.9 ± 1.8 |
28.1 ± 3.3 |
77.6 ± 1.7 |
0.94 ± 0.21 |
0.29 ± 0.06 |
| RH9 |
25.7 ± 4.7 |
23.6 ± 1.8 |
27.8 ± 3.3 |
77.7 ± 1.7 |
1.09 ± 0.19 |
0.33 ± 0.06 |
| RH10 |
25.7 ± 4.7 |
23.6 ± 1.8 |
27.8 ± 3.3 |
77.7 ± 1.7 |
1.09 ± 0.19 |
0.33 ± 0.06 |
| Average |
24.9 |
15.8 |
18.8 |
79.2 |
2.7 |
0.3 |
| Median |
25.7 |
22.0 |
26.1 |
80.2 |
2.1 |
0.3 |
| Deviation |
1.4 |
8.5 |
9.8 |
1.6 |
3.1 |
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)
| 
