Database: Ace Shock Analysis
Event ID: 19993461514
Observation time: 12/12/1999 346.63515 1514 [UT]
|
|
General
Information (About, Top)
| Year |
1999 |
| Fractional day of year |
346.635150 |
| Arrival time of shock [seconds of day] |
54877.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.035 |
| Y GSE location of spacecraft [Re] |
0.006 |
| Z GSE location of spacecraft [Re] |
-0.002 |
| Upstream plasma points selected for analysis |
0008 |
| Upstream field points selected for analysis |
0041 |
| Downstream plasma points selected for analysis |
0009
|
| Downstream field points selected for analysis |
0037 |
| Minimum chisq/dof for RH8,RH9,RH10 |
10.86, 17.66, 18.52 |
Event added to database
|
Sat Apr 30 21:45:19 2005
|
Event last processed
|
Wed Oct 15 15:40:38 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.006 ± 0.001
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-362.3 ± 15.8 |
-448.4 ± 14.9 |
| Vy GSE [km/s] |
-18.4 ± 13.4 |
-63.5 ± 4.3 |
| Vz GSE [km/s] |
8.3 ± 4.9 |
-49.7 ± 22.1 |
| Wi [km/s] |
23.2 ± 2.8 |
65.2 ± 7.1 |
| We [km/s] |
734.3 ± 90.0 |
2061.1 ± 225.0 |
| Ni [n/cc] |
0.8 ± 0.1 |
1.8 ± 0.3 |
| Bx GSE [nT] |
-3.1 ± 0.6 |
-6.0 ± 0.5 |
| By GSE [nT] |
3.3 ± 0.6 |
8.1 ± 0.4 |
| Bz GSE [nT] |
-1.2 ± 0.4 |
0.8 ± 1.0 |
Plasma Beta
|
0.042 ± 0.039
|
0.166 ± 0.138
|
Sound Speed [km/s]
|
29.93 ± 3.74
|
83.94 ± 8.95
|
Alfven Speed [km/s]
|
115.07 ± 5.11
|
162.52 ± 11.21
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.874 ± 0.367 |
-0.098 ± 0.563 |
-0.477 ± 0.437 |
-28.47 ± 43.67 |
186.41 ± 36.83 |
| VC |
-0.769 ± 0.092 |
-0.404 ± 0.089 |
-0.495 ± 0.450 |
-29.67 ± 10.77 |
207.70 ± 5.82 |
| MX1 |
-0.832 ± 0.093 |
-0.248 ± 0.148 |
-0.496 ± 0.451 |
-29.75 ± 9.95 |
196.57 ± 10.06 |
| MX2 |
-0.842 ± 0.088 |
-0.275 ± 0.131 |
-0.464 ± 0.427 |
-27.63 ± 10.03 |
198.11 ± 8.77 |
| MX3 |
-0.848 ± 0.086 |
-0.292 ± 0.123 |
-0.443 ± 0.411 |
-26.29 ± 10.32 |
198.99 ± 8.12 |
| RH08 |
-0.879 ± 0.007 |
-0.383 ± 0.011 |
-0.285 ± 0.277 |
-16.55 ± 1.08 |
203.57 ± 0.72 |
| RH09 |
-0.878 ± 0.033 |
-0.347 ± 0.066 |
-0.330 ± 0.317 |
-19.25 ± 3.99 |
201.56 ± 4.26 |
| RH10 |
-0.878 ± 0.033 |
-0.347 ± 0.066 |
-0.330 ± 0.317 |
-19.25 ± 3.99 |
201.56 ± 4.26 |
| Average |
-0.850 |
-0.299 |
-0.415 |
-24.607 |
199.308 |
| Median |
-0.848 |
-0.292 |
-0.443 |
-26.292 |
201.560 |
| Deviation |
0.038 |
0.097 |
0.086 |
5.364 |
6.259 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
51.9 ± 10.1 |
509.4 ± 4.2 |
2.28 ± 0.43 |
| VC |
70.5 ± 10.1 |
486.6 ± 4.2 |
2.28 ± 0.43 |
| MX1 |
60.8 ± 10.1 |
501.9 ± 4.2 |
2.28 ± 0.43 |
| MX2 |
62.2 ± 10.1 |
509.4 ± 4.1 |
2.28 ± 0.43 |
| MX3 |
63.1 ± 10.1 |
512.7 ± 4.1 |
2.28 ± 0.43 |
| RH08 |
68.3 ± 10.0 |
521.9 ± 3.7 |
2.28 ± 0.43 |
| RH09 |
66.1 ± 10.0 |
521.3 ± 3.8 |
2.28 ± 0.43 |
| RH10 |
66.1 ± 10.0 |
521.3 ± 32.2 |
2.28 ± 0.43 |
| Average |
63.6 |
510.6 |
2.28 |
| Median |
66.1 |
512.7 |
2.28 |
| Deviation |
5.7 |
12.1 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
195.1 ± 14.8 |
18.0 ± 2.1 |
70.9 ± 3.1 |
117.6 ± 4.6 |
10.92 ± 1.40 |
1.66 ± 0.12 |
| VC |
204.3 ± 17.3 |
9.7 ± 1.1 |
38.5 ± 1.7 |
118.6 ± 4.5 |
21.26 ± 2.76 |
1.72 ± 0.14 |
| MX1 |
199.8 ± 16.2 |
14.2 ± 1.6 |
56.1 ± 2.5 |
118.1 ± 4.6 |
14.22 ± 1.84 |
1.69 ± 0.13 |
| MX2 |
202.9 ± 16.7 |
13.6 ± 1.6 |
53.6 ± 2.4 |
118.2 ± 4.5 |
15.10 ± 1.96 |
1.72 ± 0.13 |
| MX3 |
203.7 ± 17.0 |
13.2 ± 1.5 |
52.1 ± 2.3 |
118.2 ± 4.5 |
15.60 ± 2.03 |
1.72 ± 0.13 |
| RH8 |
198.6 ± 18.7 |
10.7 ± 1.2 |
42.5 ± 1.9 |
118.5 ± 4.5 |
18.69 ± 2.52 |
1.68 ± 0.15 |
| RH9 |
199.4 ± 18.2 |
11.8 ± 1.4 |
46.7 ± 2.1 |
118.4 ± 4.5 |
17.06 ± 2.28 |
1.68 ± 0.14 |
| RH10 |
199.4 ± 18.2 |
11.8 ± 1.4 |
46.7 ± 2.1 |
118.4 ± 4.5 |
17.06 ± 2.28 |
1.68 ± 0.14 |
| Average |
200.4 |
12.9 |
50.9 |
118.2 |
16.2 |
1.7 |
| Median |
199.8 |
13.2 |
52.1 |
118.4 |
17.1 |
1.7 |
| Deviation |
3.1 |
2.6 |
10.0 |
0.3 |
3.1 |
0.0 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
88.3 ± 18.6 |
47.4 ± 3.6 |
100.2 ± 6.9 |
177.0 ± 8.9 |
1.90 ± 0.49 |
0.50 ± 0.11 |
| VC |
91.7 ± 17.0 |
25.0 ± 1.8 |
54.3 ± 3.7 |
181.5 ± 8.7 |
3.71 ± 0.86 |
0.51 ± 0.10 |
| MX1 |
88.8 ± 18.1 |
36.9 ± 2.7 |
79.2 ± 5.5 |
179.5 ± 8.8 |
2.44 ± 0.61 |
0.50 ± 0.10 |
| MX2 |
91.6 ± 17.6 |
35.2 ± 2.6 |
75.8 ± 5.2 |
179.8 ± 8.8 |
2.64 ± 0.63 |
0.51 ± 0.10 |
| MX3 |
92.4 ± 17.3 |
34.2 ± 2.5 |
73.6 ± 5.1 |
180.0 ± 8.7 |
2.74 ± 0.64 |
0.51 ± 0.10 |
| RH8 |
89.3 ± 15.1 |
27.7 ± 2.0 |
60.0 ± 4.1 |
181.1 ± 8.7 |
3.27 ± 0.71 |
0.49 ± 0.09 |
| RH9 |
89.3 ± 15.8 |
30.5 ± 2.2 |
66.0 ± 4.5 |
180.7 ± 8.7 |
2.96 ± 0.66 |
0.50 ± 0.09 |
| RH10 |
89.3 ± 15.8 |
30.5 ± 2.2 |
66.0 ± 4.5 |
180.7 ± 8.7 |
2.96 ± 0.66 |
0.50 ± 0.09 |
| Average |
90.1 |
33.4 |
71.9 |
180.0 |
2.8 |
0.5 |
| Median |
89.3 |
34.2 |
73.6 |
180.7 |
3.0 |
0.5 |
| Deviation |
1.6 |
6.9 |
14.1 |
1.4 |
0.5 |
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)
| 
