Database: Ace Shock Analysis
Event ID: 20002741038
Observation time: 09/30/2000 274.44326 1038 [UT]
|
|
General
Information (About, Top)
| Year |
2000 |
| Fractional day of year |
274.443264 |
| Arrival time of shock [seconds of day] |
38298.0 ± 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] |
-0.001 |
| Upstream plasma points selected for analysis |
0010 |
| Upstream field points selected for analysis |
0044 |
| Downstream plasma points selected for analysis |
0007
|
| Downstream field points selected for analysis |
0029 |
| Minimum chisq/dof for RH8,RH9,RH10 |
9.65, 15.93, 16.38 |
Event added to database
|
Sat Apr 30 21:47:46 2005
|
Event last processed
|
Tue May 3 13:34:36 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] |
-395.8 ± 2.7 |
-416.9 ± 1.1 |
| Vy GSE [km/s] |
-25.2 ± 1.5 |
-16.6 ± 1.5 |
| Vz GSE [km/s] |
-15.1 ± 2.1 |
-10.4 ± 1.6 |
| Wi [km/s] |
17.5 ± 1.2 |
21.4 ± 3.0 |
| We [km/s] |
553.4 ± 37.5 |
676.7 ± 94.5 |
| Ni [n/cc] |
8.8 ± 0.5 |
11.4 ± 1.6 |
| Bx GSE [nT] |
2.4 ± 0.3 |
2.9 ± 1.1 |
| By GSE [nT] |
11.1 ± 0.2 |
14.7 ± 0.2 |
| Bz GSE [nT] |
-5.3 ± 0.3 |
-6.5 ± 1.2 |
Plasma Beta
|
0.036 ± 0.035
|
0.043 ± 0.033
|
Sound Speed [km/s]
|
22.59 ± 1.53
|
27.63 ± 3.86
|
Alfven Speed [km/s]
|
92.08 ± 3.28
|
106.99 ± 9.31
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.924 ± 0.274 |
0.097 ± 0.470 |
-0.371 ± 0.353 |
-21.78 ± 41.85 |
174.01 ± 29.10 |
| VC |
-0.905 ± 0.040 |
0.374 ± 0.084 |
0.202 ± 0.199 |
11.63 ± 5.98 |
157.58 ± 5.29 |
| MX1 |
-0.938 ± 0.053 |
0.217 ± 0.189 |
0.271 ± 0.264 |
15.71 ± 6.64 |
166.94 ± 11.52 |
| MX2 |
-0.935 ± 0.053 |
0.221 ± 0.184 |
0.276 ± 0.269 |
16.05 ± 6.51 |
166.74 ± 11.29 |
| MX3 |
-0.929 ± 0.054 |
0.229 ± 0.173 |
0.292 ± 0.283 |
16.95 ± 6.75 |
166.12 ± 10.66 |
| RH08 |
-0.997 ± 0.001 |
-0.079 ± 0.009 |
0.017 ± 0.017 |
0.96 ± 0.77 |
184.51 ± 0.54 |
| RH09 |
-0.989 ± 0.010 |
-0.148 ± 0.068 |
0.006 ± 0.006 |
0.32 ± 4.05 |
188.52 ± 3.94 |
| RH10 |
-0.989 ± 0.010 |
-0.148 ± 0.068 |
0.017 ± 0.017 |
0.96 ± 4.05 |
188.52 ± 3.91 |
| Average |
-0.951 |
0.095 |
0.089 |
5.100 |
174.119 |
| Median |
-0.935 |
0.217 |
0.202 |
11.627 |
174.009 |
| Deviation |
0.035 |
0.198 |
0.224 |
13.067 |
11.750 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
86.4 ± 1.5 |
458.4 ± 90.5 |
1.26 ± 0.20 |
| VC |
86.1 ± 1.7 |
457.3 ± 116.2 |
1.26 ± 0.20 |
| MX1 |
83.9 ± 1.7 |
472.1 ± 114.4 |
1.26 ± 0.20 |
| MX2 |
83.9 ± 1.7 |
470.9 ± 114.4 |
1.26 ± 0.20 |
| MX3 |
84.1 ± 1.7 |
467.7 ± 114.6 |
1.26 ± 0.20 |
| RH08 |
74.2 ± 1.6 |
499.1 ± 100.2 |
1.26 ± 0.20 |
| RH09 |
70.9 ± 1.6 |
494.5 ± 96.0 |
1.26 ± 0.20 |
| RH10 |
70.6 ± 1.6 |
494.4 ± 96.3 |
1.26 ± 0.20 |
| Average |
80.0 |
476.8 |
1.26 |
| Median |
83.9 |
472.1 |
1.26 |
| Deviation |
6.9 |
16.8 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
89.6 ± 2.4 |
1.4 ± 0.1 |
5.8 ± 0.2 |
94.8 ± 3.3 |
65.50 ± 3.76 |
0.95 ± 0.04 |
| VC |
111.4 ± 2.7 |
1.5 ± 0.1 |
6.2 ± 0.2 |
94.8 ± 3.3 |
75.50 ± 5.08 |
1.18 ± 0.05 |
| MX1 |
110.5 ± 2.8 |
2.3 ± 0.1 |
9.8 ± 0.3 |
94.8 ± 3.3 |
47.60 ± 3.25 |
1.17 ± 0.05 |
| MX2 |
110.4 ± 2.8 |
2.3 ± 0.1 |
9.7 ± 0.3 |
94.8 ± 3.3 |
47.91 ± 3.27 |
1.17 ± 0.05 |
| MX3 |
110.3 ± 2.8 |
2.3 ± 0.1 |
9.4 ± 0.3 |
94.8 ± 3.3 |
49.17 ± 3.37 |
1.16 ± 0.05 |
| RH8 |
102.8 ± 2.7 |
6.0 ± 0.4 |
25.0 ± 0.9 |
94.6 ± 3.3 |
17.29 ± 1.11 |
1.09 ± 0.04 |
| RH9 |
99.4 ± 2.7 |
7.2 ± 0.5 |
30.1 ± 1.1 |
94.5 ± 3.3 |
13.87 ± 0.89 |
1.05 ± 0.04 |
| RH10 |
99.5 ± 2.7 |
7.3 ± 0.5 |
30.5 ± 1.1 |
94.5 ± 3.3 |
13.69 ± 0.88 |
1.05 ± 0.04 |
| Average |
104.2 |
3.8 |
15.8 |
94.7 |
41.3 |
1.1 |
| Median |
110.3 |
2.3 |
9.8 |
94.8 |
47.9 |
1.2 |
| Deviation |
7.8 |
2.6 |
10.8 |
0.1 |
23.9 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
71.1 ± 1.3 |
1.7 ± 0.2 |
6.7 ± 0.6 |
110.6 ± 8.0 |
43.23 ± 5.69 |
0.65 ± 0.05 |
| VC |
88.1 ± 1.1 |
1.8 ± 0.2 |
7.2 ± 0.6 |
110.6 ± 8.0 |
49.67 ± 6.54 |
0.80 ± 0.05 |
| MX1 |
87.5 ± 1.0 |
2.8 ± 0.4 |
11.4 ± 1.0 |
110.6 ± 8.0 |
31.37 ± 4.11 |
0.79 ± 0.05 |
| MX2 |
87.4 ± 1.0 |
2.8 ± 0.3 |
11.3 ± 1.0 |
110.6 ± 8.0 |
31.56 ± 4.13 |
0.79 ± 0.05 |
| MX3 |
87.3 ± 1.0 |
2.7 ± 0.3 |
11.0 ± 1.0 |
110.6 ± 8.0 |
32.39 ± 4.24 |
0.79 ± 0.05 |
| RH8 |
82.4 ± 1.1 |
7.3 ± 0.9 |
29.1 ± 2.5 |
110.4 ± 8.1 |
11.52 ± 1.50 |
0.75 ± 0.05 |
| RH9 |
79.7 ± 1.1 |
8.7 ± 1.1 |
35.0 ± 3.0 |
110.3 ± 8.1 |
9.26 ± 1.21 |
0.73 ± 0.05 |
| RH10 |
79.8 ± 1.1 |
8.9 ± 1.1 |
35.5 ± 3.1 |
110.3 ± 8.1 |
9.13 ± 1.19 |
0.73 ± 0.05 |
| Average |
82.9 |
4.6 |
18.4 |
110.5 |
27.3 |
0.8 |
| Median |
87.3 |
2.8 |
11.4 |
110.6 |
31.6 |
0.8 |
| Deviation |
5.9 |
3.1 |
12.5 |
0.2 |
15.7 |
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)
| 
