Database: Ace Shock Analysis
Event ID: 20010971659
Observation time: 04/07/2001 97.70780 1659 [UT]
|
|
General
Information (About, Top)
| Year |
2001 |
| Fractional day of year |
97.707801 |
| Arrival time of shock [seconds of day] |
61154.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.035 |
| Y GSE location of spacecraft [Re] |
-0.002 |
| Z GSE location of spacecraft [Re] |
-0.003 |
| Upstream plasma points selected for analysis |
0012 |
| Upstream field points selected for analysis |
0048 |
| Downstream plasma points selected for analysis |
0011
|
| Downstream field points selected for analysis |
0051 |
| Minimum chisq/dof for RH8,RH9,RH10 |
10.29, 15.82, 16.12 |
Event added to database
|
Sat Apr 30 21:50:39 2005
|
Event last processed
|
Tue May 3 13:53:41 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.006 ± 0.000
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-438.2 ± 4.0 |
-540.9 ± 7.5 |
| Vy GSE [km/s] |
-25.6 ± 5.3 |
-103.6 ± 7.9 |
| Vz GSE [km/s] |
-15.1 ± 2.7 |
25.4 ± 13.7 |
| Wi [km/s] |
41.7 ± 2.7 |
58.7 ± 6.1 |
| We [km/s] |
1319.7 ± 85.4 |
1855.2 ± 193.2 |
| Ni [n/cc] |
4.1 ± 0.2 |
12.4 ± 1.7 |
| Bx GSE [nT] |
3.1 ± 1.1 |
9.1 ± 1.3 |
| By GSE [nT] |
2.1 ± 0.6 |
-8.8 ± 1.7 |
| Bz GSE [nT] |
0.4 ± 0.4 |
-1.8 ± 2.9 |
Plasma Beta
|
1.178 ± 1.295
|
0.538 ± 0.569
|
Sound Speed [km/s]
|
53.88 ± 3.49
|
75.74 ± 7.89
|
Alfven Speed [km/s]
|
40.88 ± 9.28
|
82.75 ± 11.84
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.876 ± 0.072 |
-0.475 ± 0.132 |
-0.082 ± 0.081 |
-4.68 ± 6.47 |
208.49 ± 8.63 |
| VC |
-0.761 ± 0.040 |
-0.577 ± 0.047 |
0.297 ± 0.288 |
17.30 ± 5.38 |
217.17 ± 3.32 |
| MX1 |
-0.838 ± 0.218 |
-0.507 ± 0.323 |
0.202 ± 0.199 |
11.65 ± 34.08 |
211.21 ± 21.69 |
| MX2 |
-0.807 ± 0.092 |
-0.516 ± 0.139 |
0.288 ± 0.280 |
16.75 ± 5.33 |
212.61 ± 9.85 |
| MX3 |
-0.804 ± 0.090 |
-0.515 ± 0.137 |
0.298 ± 0.288 |
17.31 ± 5.59 |
212.61 ± 9.68 |
| RH08 |
-0.965 ± 0.002 |
-0.197 ± 0.008 |
0.173 ± 0.171 |
9.97 ± 0.53 |
191.53 ± 0.50 |
| RH09 |
-0.988 ± 0.011 |
-0.113 ± 0.069 |
0.106 ± 0.106 |
6.09 ± 4.02 |
186.52 ± 4.03 |
| RH10 |
-0.989 ± 0.010 |
-0.113 ± 0.069 |
0.095 ± 0.095 |
5.45 ± 4.02 |
186.52 ± 3.99 |
| Average |
-0.878 |
-0.377 |
0.172 |
9.981 |
203.332 |
| Median |
-0.838 |
-0.475 |
0.202 |
11.653 |
211.207 |
| Deviation |
0.091 |
0.199 |
0.131 |
7.622 |
12.856 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
14.1 ± 8.7 |
578.7 ± 26.3 |
3.02 ± 0.52 |
| VC |
26.6 ± 5.1 |
542.9 ± 26.2 |
3.02 ± 0.52 |
| MX1 |
22.3 ± 5.9 |
574.3 ± 26.1 |
3.02 ± 0.52 |
| MX2 |
26.3 ± 5.2 |
561.0 ± 25.8 |
3.02 ± 0.52 |
| MX3 |
26.8 ± 5.2 |
559.7 ± 25.8 |
3.02 ± 0.52 |
| RH08 |
30.2 ± 11.3 |
605.2 ± 22.5 |
3.02 ± 0.52 |
| RH09 |
32.3 ± 12.8 |
603.7 ± 21.3 |
3.02 ± 0.52 |
| RH10 |
32.0 ± 12.9 |
603.8 ± 21.3 |
3.02 ± 0.52 |
| Average |
26.3 |
578.7 |
3.02 |
| Median |
26.8 |
578.7 |
3.02 |
| Deviation |
6.0 |
23.7 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
181.5 ± 5.1 |
37.3 ± 6.3 |
39.7 ± 9.0 |
56.8 ± 3.9 |
4.97 ± 0.71 |
3.21 ± 0.21 |
| VC |
199.3 ± 5.5 |
32.7 ± 5.0 |
36.5 ± 8.3 |
59.6 ± 4.7 |
6.21 ± 0.80 |
3.36 ± 0.24 |
| MX1 |
197.4 ± 5.4 |
34.4 ± 5.4 |
37.8 ± 8.6 |
58.6 ± 4.4 |
5.84 ± 0.78 |
3.38 ± 0.23 |
| MX2 |
198.7 ± 5.4 |
32.8 ± 5.0 |
36.7 ± 8.3 |
59.5 ± 4.7 |
6.16 ± 0.80 |
3.35 ± 0.24 |
| MX3 |
198.7 ± 5.4 |
32.6 ± 5.0 |
36.5 ± 8.3 |
59.6 ± 4.7 |
6.20 ± 0.80 |
3.35 ± 0.24 |
| RH8 |
180.0 ± 4.6 |
31.2 ± 4.7 |
35.3 ± 8.0 |
60.4 ± 4.9 |
5.87 ± 0.74 |
2.99 ± 0.21 |
| RH9 |
169.5 ± 4.3 |
30.2 ± 4.5 |
34.6 ± 7.8 |
60.9 ± 5.0 |
5.70 ± 0.71 |
2.80 ± 0.20 |
| RH10 |
169.0 ± 4.3 |
30.4 ± 4.5 |
34.7 ± 7.9 |
60.8 ± 5.0 |
5.66 ± 0.71 |
2.79 ± 0.20 |
| Average |
186.7 |
32.7 |
36.5 |
59.5 |
5.8 |
3.2 |
| Median |
197.4 |
32.7 |
36.5 |
59.6 |
5.9 |
3.3 |
| Deviation |
13.3 |
2.3 |
1.7 |
1.4 |
0.4 |
0.3 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
57.7 ± 8.4 |
66.5 ± 4.6 |
80.3 ± 11.5 |
90.8 ± 9.5 |
0.87 ± 0.11 |
0.64 ± 0.12 |
| VC |
64.1 ± 9.0 |
57.4 ± 3.9 |
74.0 ± 10.6 |
96.9 ± 9.1 |
1.11 ± 0.12 |
0.66 ± 0.10 |
| MX1 |
63.5 ± 8.8 |
60.7 ± 4.2 |
76.6 ± 11.0 |
94.8 ± 9.2 |
1.04 ± 0.11 |
0.67 ± 0.10 |
| MX2 |
63.9 ± 9.1 |
57.7 ± 4.0 |
74.2 ± 10.6 |
96.7 ± 9.1 |
1.11 ± 0.12 |
0.66 ± 0.09 |
| MX3 |
63.9 ± 9.1 |
57.3 ± 3.9 |
73.9 ± 10.6 |
96.9 ± 9.1 |
1.11 ± 0.12 |
0.66 ± 0.09 |
| RH8 |
58.5 ± 8.7 |
54.6 ± 3.8 |
71.5 ± 10.2 |
98.5 ± 9.1 |
1.07 ± 0.12 |
0.60 ± 0.08 |
| RH9 |
54.9 ± 8.3 |
52.9 ± 3.7 |
70.0 ± 10.0 |
99.4 ± 9.1 |
1.04 ± 0.12 |
0.55 ± 0.08 |
| RH10 |
54.7 ± 8.2 |
53.1 ± 3.7 |
70.2 ± 10.0 |
99.3 ± 9.1 |
1.03 ± 0.12 |
0.55 ± 0.08 |
| Average |
60.1 |
57.5 |
73.8 |
96.7 |
1.0 |
0.6 |
| Median |
63.5 |
57.4 |
74.0 |
96.9 |
1.1 |
0.7 |
| Deviation |
4.2 |
4.5 |
3.4 |
2.8 |
0.1 |
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)
| 
