Database: Ace Shock Analysis
Event ID: 20022501608
Observation time: 09/07/2002 250.67274 1608 [UT]
|
|
General
Information (About, Top)
| Year |
2002 |
| Fractional day of year |
250.672743 |
| Arrival time of shock [seconds of day] |
58125.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.036 |
| Y GSE location of spacecraft [Re] |
-0.004 |
| Z GSE location of spacecraft [Re] |
0.000 |
| Upstream plasma points selected for analysis |
0008 |
| Upstream field points selected for analysis |
0034 |
| Downstream plasma points selected for analysis |
0011
|
| Downstream field points selected for analysis |
0044 |
| Minimum chisq/dof for RH8,RH9,RH10 |
9.61, 16.28, 16.74 |
Event added to database
|
Sun May 1 22:40:39 2005
|
Event last processed
|
Tue May 3 14:34:51 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] |
-385.4 ± 1.8 |
-548.0 ± 13.0 |
| Vy GSE [km/s] |
-20.8 ± 1.9 |
-89.9 ± 20.6 |
| Vz GSE [km/s] |
11.4 ± 1.5 |
9.8 ± 6.3 |
| Wi [km/s] |
11.4 ± 1.1 |
54.8 ± 6.3 |
| We [km/s] |
359.2 ± 35.3 |
1734.1 ± 200.0 |
| Ni [n/cc] |
3.5 ± 0.5 |
12.9 ± 0.7 |
| Bx GSE [nT] |
1.3 ± 0.1 |
2.8 ± 1.0 |
| By GSE [nT] |
-0.6 ± 0.5 |
-0.2 ± 1.1 |
| Bz GSE [nT] |
-8.5 ± 0.3 |
-25.3 ± 0.3 |
Plasma Beta
|
0.013 ± 0.012
|
0.128 ± 0.125
|
Sound Speed [km/s]
|
14.66 ± 1.44
|
70.79 ± 8.17
|
Alfven Speed [km/s]
|
100.95 ± 7.31
|
154.77 ± 5.31
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.994 ± 0.108 |
0.104 ± 1.030 |
-0.032 ± 0.032 |
-1.84 ± 4.16 |
174.01 ± 59.39 |
| VC |
-0.923 ± 0.032 |
-0.385 ± 0.078 |
-0.012 ± 0.012 |
-0.70 ± 2.19 |
202.62 ± 4.81 |
| MX1 |
-0.915 ± 0.034 |
-0.393 ± 0.079 |
-0.091 ± 0.091 |
-5.23 ± 3.38 |
203.23 ± 4.93 |
| MX2 |
-0.918 ± 0.033 |
-0.386 ± 0.078 |
-0.091 ± 0.091 |
-5.21 ± 3.37 |
202.82 ± 4.86 |
| MX3 |
-0.919 ± 0.033 |
-0.383 ± 0.078 |
-0.091 ± 0.090 |
-5.20 ± 3.37 |
202.61 ± 4.84 |
| RH08 |
-0.973 ± 0.004 |
-0.216 ± 0.017 |
-0.084 ± 0.084 |
-4.81 ± 0.00 |
192.53 ± 1.00 |
| RH09 |
-0.973 ± 0.017 |
-0.216 ± 0.071 |
-0.084 ± 0.084 |
-4.81 ± 3.38 |
192.53 ± 4.19 |
| RH10 |
-0.973 ± 0.016 |
-0.216 ± 0.071 |
-0.084 ± 0.084 |
-4.81 ± 3.48 |
192.53 ± 4.15 |
| Average |
-0.948 |
-0.261 |
-0.071 |
-4.074 |
195.362 |
| Median |
-0.923 |
-0.216 |
-0.084 |
-4.807 |
202.613 |
| Deviation |
0.032 |
0.170 |
0.031 |
1.770 |
10.020 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
82.7 ± 0.9 |
595.0 ± 19.3 |
3.63 ± 0.47 |
| VC |
84.2 ± 2.1 |
610.7 ± 27.4 |
3.63 ± 0.47 |
| MX1 |
88.8 ± 2.1 |
606.3 ± 27.0 |
3.63 ± 0.47 |
| MX2 |
88.7 ± 2.1 |
607.2 ± 26.9 |
3.63 ± 0.47 |
| MX3 |
88.7 ± 2.1 |
607.7 ± 26.9 |
3.63 ± 0.47 |
| RH08 |
87.2 ± 1.7 |
621.4 ± 24.4 |
3.63 ± 0.47 |
| RH09 |
87.2 ± 1.7 |
621.4 ± 24.4 |
3.63 ± 0.47 |
| RH10 |
87.2 ± 1.7 |
621.4 ± 24.4 |
3.63 ± 0.47 |
| Average |
86.8 |
611.4 |
3.63 |
| Median |
87.2 |
610.7 |
3.63 |
| Deviation |
2.2 |
9.5 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
214.4 ± 1.8 |
1.8 ± 0.2 |
12.7 ± 0.9 |
102.0 ± 7.1 |
118.11 ± 11.58 |
2.11 ± 0.15 |
| VC |
247.1 ± 1.7 |
1.5 ± 0.1 |
10.2 ± 0.7 |
102.0 ± 7.1 |
170.71 ± 16.17 |
2.43 ± 0.18 |
| MX1 |
246.4 ± 1.6 |
0.3 ± 0.0 |
2.1 ± 0.2 |
102.0 ± 7.1 |
812.76 ± 77.17 |
2.43 ± 0.18 |
| MX2 |
246.5 ± 1.6 |
0.3 ± 0.0 |
2.2 ± 0.2 |
102.0 ± 7.1 |
771.42 ± 73.27 |
2.43 ± 0.18 |
| MX3 |
246.5 ± 1.6 |
0.3 ± 0.0 |
2.3 ± 0.2 |
102.0 ± 7.1 |
751.59 ± 71.40 |
2.43 ± 0.18 |
| RH8 |
242.9 ± 1.7 |
0.7 ± 0.1 |
5.0 ± 0.4 |
102.0 ± 7.1 |
341.78 ± 32.81 |
2.39 ± 0.17 |
| RH9 |
242.9 ± 1.7 |
0.7 ± 0.1 |
5.0 ± 0.4 |
102.0 ± 7.1 |
341.78 ± 32.81 |
2.39 ± 0.17 |
| RH10 |
242.9 ± 1.7 |
0.7 ± 0.1 |
5.0 ± 0.4 |
102.0 ± 7.1 |
341.78 ± 32.81 |
2.39 ± 0.17 |
| Average |
241.2 |
0.8 |
5.6 |
102.0 |
456.2 |
2.4 |
| Median |
246.4 |
0.7 |
5.0 |
102.0 |
341.8 |
2.4 |
| Deviation |
11.0 |
0.6 |
3.9 |
0.0 |
280.0 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
59.9 ± 11.3 |
8.1 ± 0.8 |
19.5 ± 0.7 |
170.2 ± 5.0 |
7.51 ± 1.96 |
0.35 ± 0.07 |
| VC |
70.4 ± 18.6 |
6.5 ± 0.6 |
15.6 ± 0.5 |
170.3 ± 5.0 |
11.14 ± 3.79 |
0.41 ± 0.11 |
| MX1 |
70.4 ± 18.2 |
1.4 ± 0.1 |
3.3 ± 0.1 |
170.4 ± 5.0 |
53.13 ± 17.77 |
0.41 ± 0.11 |
| MX2 |
70.4 ± 18.1 |
1.4 ± 0.1 |
3.4 ± 0.1 |
170.4 ± 5.0 |
50.44 ± 16.81 |
0.41 ± 0.11 |
| MX3 |
70.4 ± 18.1 |
1.5 ± 0.1 |
3.5 ± 0.1 |
170.4 ± 5.0 |
49.14 ± 16.35 |
0.41 ± 0.11 |
| RH8 |
69.7 ± 15.8 |
3.2 ± 0.3 |
7.6 ± 0.3 |
170.4 ± 5.0 |
22.40 ± 6.78 |
0.41 ± 0.10 |
| RH9 |
69.7 ± 15.8 |
3.2 ± 0.3 |
7.6 ± 0.3 |
170.4 ± 5.0 |
22.40 ± 6.78 |
0.41 ± 0.10 |
| RH10 |
69.7 ± 15.8 |
3.2 ± 0.3 |
7.6 ± 0.3 |
170.4 ± 5.0 |
22.40 ± 6.78 |
0.41 ± 0.10 |
| Average |
68.8 |
3.5 |
8.5 |
170.3 |
29.8 |
0.4 |
| Median |
70.4 |
3.2 |
7.6 |
170.4 |
22.4 |
0.4 |
| Deviation |
3.6 |
2.5 |
6.0 |
0.1 |
18.3 |
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)
| 
