Database: Ace Shock Analysis
Event ID: 19993011126
Observation time: 10/28/1999 301.47688 1126 [UT]
|
|
General
Information (About, Top)
| Year |
1999 |
| Fractional day of year |
301.476875 |
| Arrival time of shock [seconds of day] |
41202.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.035 |
| Y GSE location of spacecraft [Re] |
-0.003 |
| Z GSE location of spacecraft [Re] |
-0.002 |
| Upstream plasma points selected for analysis |
0009 |
| Upstream field points selected for analysis |
0039 |
| Downstream plasma points selected for analysis |
0006
|
| Downstream field points selected for analysis |
0023 |
| Minimum chisq/dof for RH8,RH9,RH10 |
9.31, 12.10, 12.41 |
Event added to database
|
Sat Apr 30 21:44:54 2005
|
Event last processed
|
Wed Oct 15 15:27:44 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] |
-374.7 ± 2.9 |
-411.9 ± 2.5 |
| Vy GSE [km/s] |
14.9 ± 6.6 |
-2.5 ± 3.0 |
| Vz GSE [km/s] |
-17.8 ± 2.5 |
-0.9 ± 3.8 |
| Wi [km/s] |
29.7 ± 1.4 |
42.3 ± 1.9 |
| We [km/s] |
940.0 ± 44.8 |
1338.3 ± 60.2 |
| Ni [n/cc] |
5.7 ± 0.4 |
9.7 ± 1.4 |
| Bx GSE [nT] |
-2.6 ± 0.5 |
-3.6 ± 0.4 |
| By GSE [nT] |
-1.5 ± 1.1 |
-0.3 ± 2.2 |
| Bz GSE [nT] |
5.8 ± 0.5 |
8.9 ± 0.4 |
Plasma Beta
|
0.251 ± 0.265
|
0.416 ± 0.454
|
Sound Speed [km/s]
|
38.75 ± 1.83
|
54.77 ± 2.49
|
Alfven Speed [km/s]
|
60.21 ± 2.78
|
66.27 ± 4.08
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.773 ± 0.498 |
-0.510 ± 0.737 |
0.377 ± 0.358 |
22.16 ± 21.82 |
213.39 ± 54.28 |
| VC |
-0.842 ± 0.069 |
-0.386 ± 0.132 |
0.376 ± 0.357 |
22.07 ± 5.57 |
204.64 ± 8.91 |
| MX1 |
-0.911 ± 0.058 |
-0.411 ± 0.126 |
-0.042 ± 0.042 |
-2.41 ± 18.01 |
204.29 ± 7.89 |
| MX2 |
-0.893 ± 0.076 |
-0.448 ± 0.151 |
0.032 ± 0.032 |
1.85 ± 15.80 |
206.65 ± 9.66 |
| MX3 |
-0.875 ± 0.122 |
-0.475 ± 0.222 |
0.090 ± 0.089 |
5.15 ± 14.93 |
208.49 ± 14.51 |
| RH08 |
-0.995 ± 0.002 |
-0.096 ± 0.019 |
-0.028 ± 0.028 |
-1.60 ± 1.45 |
185.52 ± 1.07 |
| RH09 |
-0.995 ± 0.007 |
-0.079 ± 0.069 |
-0.061 ± 0.061 |
-3.52 ± 4.03 |
184.51 ± 3.95 |
| RH10 |
-0.995 ± 0.007 |
-0.079 ± 0.069 |
-0.061 ± 0.061 |
-3.52 ± 4.03 |
184.51 ± 3.95 |
| Average |
-0.910 |
-0.310 |
0.085 |
5.022 |
199.000 |
| Median |
-0.893 |
-0.386 |
0.032 |
1.854 |
204.638 |
| Deviation |
0.081 |
0.191 |
0.187 |
10.950 |
12.054 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
41.9 ± 8.6 |
379.4 ± 4.7 |
1.76 ± 0.35 |
| VC |
42.5 ± 7.8 |
408.0 ± 4.7 |
1.76 ± 0.35 |
| MX1 |
66.5 ± 7.8 |
431.4 ± 4.1 |
1.76 ± 0.35 |
| MX2 |
62.2 ± 7.9 |
425.7 ± 4.3 |
1.76 ± 0.35 |
| MX3 |
58.8 ± 8.1 |
419.8 ± 4.4 |
1.76 ± 0.35 |
| RH08 |
68.6 ± 6.9 |
461.0 ± 3.8 |
1.76 ± 0.35 |
| RH09 |
70.6 ± 6.9 |
459.8 ± 3.7 |
1.76 ± 0.35 |
| RH10 |
70.6 ± 6.9 |
459.8 ± 27.2 |
1.76 ± 0.35 |
| Average |
60.2 |
430.6 |
1.76 |
| Median |
66.5 |
431.4 |
1.76 |
| Deviation |
11.8 |
29.0 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
102.9 ± 4.3 |
26.0 ± 0.9 |
44.8 ± 2.1 |
66.8 ± 2.2 |
3.97 ± 0.22 |
1.54 ± 0.11 |
| VC |
103.7 ± 3.9 |
25.7 ± 0.9 |
44.4 ± 2.0 |
66.9 ± 2.2 |
4.04 ± 0.21 |
1.55 ± 0.10 |
| MX1 |
94.7 ± 4.6 |
13.2 ± 0.4 |
24.0 ± 1.1 |
70.4 ± 2.1 |
7.19 ± 0.43 |
1.35 ± 0.09 |
| MX2 |
97.3 ± 4.6 |
15.6 ± 0.5 |
28.1 ± 1.3 |
69.9 ± 2.1 |
6.26 ± 0.38 |
1.39 ± 0.10 |
| MX3 |
99.5 ± 4.7 |
17.4 ± 0.6 |
31.2 ± 1.4 |
69.5 ± 2.1 |
5.74 ± 0.34 |
1.43 ± 0.10 |
| RH8 |
88.2 ± 3.6 |
12.1 ± 0.4 |
22.0 ± 1.0 |
70.6 ± 2.1 |
7.32 ± 0.37 |
1.25 ± 0.08 |
| RH9 |
86.1 ± 3.6 |
10.9 ± 0.4 |
20.0 ± 0.9 |
70.8 ± 2.1 |
7.90 ± 0.40 |
1.22 ± 0.08 |
| RH10 |
86.1 ± 3.6 |
10.9 ± 0.4 |
20.0 ± 0.9 |
70.8 ± 2.1 |
7.90 ± 0.40 |
1.22 ± 0.08 |
| Average |
94.8 |
16.5 |
29.3 |
69.5 |
6.3 |
1.4 |
| Median |
97.3 |
15.6 |
28.1 |
70.4 |
7.2 |
1.4 |
| Deviation |
7.2 |
6.2 |
10.2 |
1.7 |
1.6 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
59.3 ± 2.8 |
34.1 ± 0.8 |
49.3 ± 3.0 |
79.0 ± 2.7 |
1.74 ± 0.12 |
0.75 ± 0.06 |
| VC |
59.7 ± 2.7 |
33.7 ± 0.8 |
48.8 ± 3.0 |
79.2 ± 2.7 |
1.77 ± 0.12 |
0.76 ± 0.06 |
| MX1 |
54.9 ± 1.9 |
17.1 ± 0.4 |
26.4 ± 1.6 |
84.3 ± 2.7 |
3.21 ± 0.16 |
0.65 ± 0.04 |
| MX2 |
56.2 ± 2.0 |
20.2 ± 0.5 |
31.0 ± 1.9 |
83.6 ± 2.7 |
2.78 ± 0.14 |
0.67 ± 0.04 |
| MX3 |
57.6 ± 2.1 |
22.6 ± 0.6 |
34.3 ± 2.1 |
83.0 ± 2.7 |
2.55 ± 0.14 |
0.70 ± 0.04 |
| RH8 |
50.6 ± 2.4 |
15.6 ± 0.4 |
24.2 ± 1.5 |
84.6 ± 2.7 |
3.24 ± 0.17 |
0.60 ± 0.04 |
| RH9 |
49.4 ± 2.4 |
14.2 ± 0.4 |
22.0 ± 1.4 |
84.9 ± 2.7 |
3.50 ± 0.18 |
0.58 ± 0.04 |
| RH10 |
49.4 ± 2.4 |
14.2 ± 0.4 |
22.0 ± 1.4 |
84.9 ± 2.7 |
3.50 ± 0.18 |
0.58 ± 0.04 |
| Average |
54.7 |
21.5 |
32.2 |
82.9 |
2.8 |
0.7 |
| Median |
56.2 |
20.2 |
31.0 |
84.3 |
3.2 |
0.7 |
| Deviation |
4.3 |
8.2 |
11.2 |
2.5 |
0.7 |
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)
| 
