Database: Ace Shock Analysis
Event ID: 20002481243
Observation time: 09/04/2000 248.53052 1243 [UT]
|
|
General
Information (About, Top)
| Year |
2000 |
| Fractional day of year |
248.530521 |
| Arrival time of shock [seconds of day] |
45837.0 ± 48.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.037 |
| Y GSE location of spacecraft [Re] |
-0.006 |
| Z GSE location of spacecraft [Re] |
0.002 |
| Upstream plasma points selected for analysis |
0015 |
| Upstream field points selected for analysis |
0060 |
| Downstream plasma points selected for analysis |
0011
|
| Downstream field points selected for analysis |
0043 |
| Minimum chisq/dof for RH8,RH9,RH10 |
3.00, 7.51, 7.58 |
Event added to database
|
Sat Apr 30 21:47:28 2005
|
Event last processed
|
Wed Oct 15 16:46:08 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.008 ± 0.000
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-446.2 ± 1.6 |
-468.4 ± 2.6 |
| Vy GSE [km/s] |
1.7 ± 2.2 |
36.6 ± 4.3 |
| Vz GSE [km/s] |
29.9 ± 1.8 |
6.1 ± 3.7 |
| Wi [km/s] |
37.7 ± 1.3 |
42.4 ± 1.0 |
| We [km/s] |
1191.9 ± 41.2 |
1339.4 ± 32.7 |
| Ni [n/cc] |
5.0 ± 0.3 |
10.5 ± 0.7 |
| Bx GSE [nT] |
-3.6 ± 0.2 |
-5.3 ± 0.3 |
| By GSE [nT] |
1.7 ± 0.2 |
-2.8 ± 1.2 |
| Bz GSE [nT] |
-0.2 ± 0.2 |
2.9 ± 0.7 |
Plasma Beta
|
0.986 ± 0.989
|
0.913 ± 0.891
|
Sound Speed [km/s]
|
48.65 ± 1.67
|
54.66 ± 1.16
|
Alfven Speed [km/s]
|
37.97 ± 1.61
|
44.49 ± 2.07
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.936 ± 0.031 |
0.351 ± 0.082 |
-0.028 ± 0.028 |
-1.58 ± 2.90 |
159.46 ± 5.02 |
| VC |
-0.467 ± 0.058 |
0.730 ± 0.053 |
-0.499 ± 0.453 |
-29.93 ± 5.56 |
122.58 ± 4.08 |
| MX1 |
-0.934 ± 0.031 |
0.358 ± 0.080 |
-0.010 ± 0.010 |
-0.59 ± 4.29 |
159.00 ± 4.93 |
| MX2 |
-0.945 ± 0.030 |
0.308 ± 0.089 |
-0.112 ± 0.111 |
-6.43 ± 4.31 |
161.95 ± 5.40 |
| MX3 |
-0.946 ± 0.037 |
0.278 ± 0.110 |
-0.168 ± 0.166 |
-9.64 ± 6.72 |
163.64 ± 6.62 |
| RH08 |
-0.975 ± 0.002 |
0.199 ± 0.009 |
-0.095 ± 0.095 |
-5.45 ± 0.73 |
168.47 ± 0.55 |
| RH09 |
-0.961 ± 0.019 |
0.249 ± 0.068 |
-0.117 ± 0.117 |
-6.74 ± 4.01 |
165.46 ± 4.07 |
| RH10 |
-0.964 ± 0.019 |
0.232 ± 0.068 |
-0.128 ± 0.128 |
-7.38 ± 4.01 |
166.46 ± 4.07 |
| Average |
-0.891 |
0.338 |
-0.145 |
-8.467 |
158.378 |
| Median |
-0.945 |
0.308 |
-0.112 |
-6.427 |
163.638 |
| Deviation |
0.172 |
0.168 |
0.152 |
9.172 |
14.838 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
5.5 ± 2.8 |
481.3 ± 8.7 |
2.08 ± 0.12 |
| VC |
40.7 ± 2.9 |
286.8 ± 11.5 |
2.08 ± 0.12 |
| MX1 |
5.6 ± 2.7 |
480.5 ± 8.7 |
2.08 ± 0.12 |
| MX2 |
7.8 ± 3.0 |
484.4 ± 8.6 |
2.08 ± 0.12 |
| MX3 |
10.8 ± 2.9 |
484.4 ± 8.4 |
2.08 ± 0.12 |
| RH08 |
13.6 ± 3.2 |
492.2 ± 7.7 |
2.08 ± 0.12 |
| RH09 |
11.0 ± 3.1 |
489.0 ± 8.1 |
2.08 ± 0.12 |
| RH10 |
12.2 ± 3.1 |
489.5 ± 8.0 |
2.08 ± 0.12 |
| Average |
13.4 |
461.0 |
2.08 |
| Median |
11.0 |
484.4 |
2.08 |
| Deviation |
11.4 |
70.5 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
63.5 ± 1.6 |
37.5 ± 1.6 |
37.8 ± 1.6 |
49.0 ± 1.7 |
1.70 ± 0.09 |
1.30 ± 0.06 |
| VC |
91.7 ± 2.1 |
24.8 ± 0.9 |
28.8 ± 1.2 |
56.5 ± 2.0 |
3.71 ± 0.21 |
1.62 ± 0.09 |
| MX1 |
63.4 ± 1.6 |
37.5 ± 1.6 |
37.8 ± 1.6 |
49.0 ± 1.7 |
1.69 ± 0.09 |
1.29 ± 0.06 |
| MX2 |
65.3 ± 1.6 |
37.1 ± 1.5 |
37.6 ± 1.6 |
49.3 ± 1.7 |
1.76 ± 0.09 |
1.33 ± 0.06 |
| MX3 |
66.5 ± 1.6 |
36.4 ± 1.5 |
37.3 ± 1.6 |
49.8 ± 1.7 |
1.83 ± 0.10 |
1.34 ± 0.06 |
| RH8 |
59.2 ± 1.6 |
35.6 ± 1.4 |
36.9 ± 1.6 |
50.4 ± 1.7 |
1.66 ± 0.09 |
1.18 ± 0.05 |
| RH9 |
62.8 ± 1.6 |
36.4 ± 1.5 |
37.3 ± 1.6 |
49.9 ± 1.7 |
1.73 ± 0.09 |
1.26 ± 0.06 |
| RH10 |
62.4 ± 1.6 |
36.0 ± 1.5 |
37.1 ± 1.6 |
50.1 ± 1.7 |
1.73 ± 0.09 |
1.25 ± 0.06 |
| Average |
66.8 |
35.2 |
36.3 |
50.5 |
2.0 |
1.3 |
| Median |
63.5 |
36.4 |
37.3 |
49.9 |
1.7 |
1.3 |
| Deviation |
10.3 |
4.3 |
3.1 |
2.5 |
0.7 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
30.2 ± 2.9 |
43.9 ± 1.9 |
44.3 ± 2.1 |
55.1 ± 1.1 |
0.69 ± 0.08 |
0.55 ± 0.05 |
| VC |
44.2 ± 2.6 |
28.6 ± 0.8 |
33.7 ± 1.6 |
64.4 ± 1.1 |
1.55 ± 0.11 |
0.69 ± 0.04 |
| MX1 |
30.3 ± 2.9 |
43.9 ± 1.9 |
44.3 ± 2.1 |
55.2 ± 1.1 |
0.69 ± 0.08 |
0.55 ± 0.05 |
| MX2 |
31.4 ± 2.6 |
43.3 ± 1.8 |
44.1 ± 2.1 |
55.6 ± 1.1 |
0.73 ± 0.07 |
0.57 ± 0.05 |
| MX3 |
32.3 ± 2.5 |
42.4 ± 1.7 |
43.7 ± 2.0 |
56.3 ± 1.0 |
0.76 ± 0.07 |
0.57 ± 0.04 |
| RH8 |
28.8 ± 2.4 |
41.4 ± 1.6 |
43.2 ± 2.0 |
57.0 ± 1.0 |
0.70 ± 0.07 |
0.51 ± 0.04 |
| RH9 |
30.5 ± 2.5 |
42.3 ± 1.7 |
43.7 ± 2.0 |
56.4 ± 1.0 |
0.72 ± 0.07 |
0.54 ± 0.04 |
| RH10 |
30.4 ± 2.4 |
42.0 ± 1.6 |
43.5 ± 2.0 |
56.6 ± 1.0 |
0.73 ± 0.07 |
0.54 ± 0.04 |
| Average |
32.3 |
41.0 |
42.6 |
57.1 |
0.8 |
0.6 |
| Median |
30.5 |
42.4 |
43.7 |
56.4 |
0.7 |
0.5 |
| Deviation |
4.9 |
5.1 |
3.6 |
3.1 |
0.3 |
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)
| 
