Database: Ace Shock Analysis
Event ID: 19992072333
Observation time: 07/26/1999 207.98127 2333 [UT]
|
|
General
Information (About, Top)
| Year |
1999 |
| Fractional day of year |
207.981273 |
| Arrival time of shock [seconds of day] |
84782.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
| X GSE location of spacecraft [Re] |
0.039 |
| Y GSE location of spacecraft [Re] |
0.004 |
| Z GSE location of spacecraft [Re] |
0.003 |
| Upstream plasma points selected for analysis |
0009 |
| Upstream field points selected for analysis |
0034 |
| Downstream plasma points selected for analysis |
0010
|
| Downstream field points selected for analysis |
0044 |
| Minimum chisq/dof for RH8,RH9,RH10 |
3.60, 3.86, 3.94 |
Event added to database
|
Sat Apr 30 21:44:21 2005
|
Event last processed
|
Wed Oct 15 15:03:43 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] |
-397.1 ± 2.4 |
-431.1 ± 9.0 |
| Vy GSE [km/s] |
11.1 ± 4.5 |
-11.1 ± 9.5 |
| Vz GSE [km/s] |
-8.3 ± 4.7 |
27.5 ± 10.5 |
| Wi [km/s] |
36.2 ± 0.8 |
40.8 ± 1.8 |
| We [km/s] |
1145.6 ± 25.2 |
1291.8 ± 57.7 |
| Ni [n/cc] |
2.7 ± 0.1 |
3.9 ± 0.3 |
| Bx GSE [nT] |
-3.4 ± 0.2 |
-2.1 ± 0.8 |
| By GSE [nT] |
2.6 ± 0.3 |
5.5 ± 0.2 |
| Bz GSE [nT] |
1.4 ± 0.5 |
0.4 ± 0.6 |
Plasma Beta
|
0.364 ± 0.360
|
0.401 ± 0.397
|
Sound Speed [km/s]
|
46.79 ± 1.04
|
52.78 ± 2.38
|
Alfven Speed [km/s]
|
60.12 ± 1.20
|
65.25 ± 4.33
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.807 ± 0.099 |
0.477 ± 0.156 |
0.347 ± 0.332 |
20.31 ± 7.51 |
149.41 ± 10.95 |
| VC |
-0.659 ± 0.169 |
-0.376 ± 0.192 |
0.652 ± 0.539 |
40.69 ± 13.76 |
209.71 ± 15.24 |
| MX1 |
-0.802 ± 0.099 |
0.468 ± 0.160 |
0.370 ± 0.352 |
21.69 ± 6.51 |
149.73 ± 11.29 |
| MX2 |
-0.755 ± 0.111 |
0.468 ± 0.172 |
0.460 ± 0.424 |
27.39 ± 4.95 |
148.21 ± 12.94 |
| MX3 |
-0.630 ± 0.180 |
0.463 ± 0.211 |
0.623 ± 0.526 |
38.55 ± 12.53 |
143.66 ± 17.71 |
| RH08 |
-0.916 ± 0.007 |
0.399 ± 0.016 |
-0.039 ± 0.039 |
-2.24 ± 1.63 |
156.43 ± 0.98 |
| RH09 |
-0.909 ± 0.019 |
0.416 ± 0.041 |
-0.006 ± 0.006 |
-0.32 ± 3.98 |
155.43 ± 2.60 |
| RH10 |
-0.909 ± 0.020 |
0.416 ± 0.045 |
-0.006 ± 0.006 |
-0.32 ± 4.00 |
155.43 ± 2.81 |
| Average |
-0.798 |
0.342 |
0.300 |
18.219 |
158.502 |
| Median |
-0.802 |
0.463 |
0.370 |
21.690 |
155.432 |
| Deviation |
0.112 |
0.291 |
0.284 |
17.424 |
21.151 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
9.7 ± 3.0 |
413.3 ± 3.2 |
1.46 ± 0.13 |
| VC |
60.5 ± 6.9 |
429.4 ± 5.2 |
1.46 ± 0.13 |
| MX1 |
9.9 ± 3.6 |
413.4 ± 3.3 |
1.46 ± 0.13 |
| MX2 |
11.2 ± 5.8 |
398.5 ± 3.5 |
1.46 ± 0.13 |
| MX3 |
20.2 ± 6.5 |
357.7 ± 3.8 |
1.46 ± 0.13 |
| RH08 |
25.8 ± 5.0 |
437.6 ± 2.6 |
1.46 ± 0.13 |
| RH09 |
23.7 ± 5.0 |
436.3 ± 2.6 |
1.46 ± 0.13 |
| RH10 |
23.7 ± 5.0 |
436.3 ± 24.2 |
1.46 ± 0.13 |
| Average |
23.1 |
415.3 |
1.46 |
| Median |
23.7 |
429.4 |
1.46 |
| Deviation |
16.5 |
27.2 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
90.5 ± 1.5 |
45.2 ± 0.9 |
59.3 ± 1.2 |
61.3 ± 1.1 |
2.00 ± 0.05 |
1.48 ± 0.04 |
| VC |
177.4 ± 5.0 |
18.8 ± 0.3 |
29.6 ± 0.6 |
73.8 ± 1.0 |
9.46 ± 0.36 |
2.40 ± 0.09 |
| MX1 |
92.7 ± 1.5 |
45.1 ± 0.9 |
59.2 ± 1.2 |
61.4 ± 1.1 |
2.05 ± 0.06 |
1.51 ± 0.04 |
| MX2 |
97.6 ± 1.7 |
44.7 ± 0.9 |
59.0 ± 1.2 |
61.7 ± 1.1 |
2.18 ± 0.07 |
1.58 ± 0.04 |
| MX3 |
107.8 ± 2.3 |
41.2 ± 0.7 |
56.4 ± 1.1 |
64.1 ± 1.0 |
2.62 ± 0.09 |
1.68 ± 0.05 |
| RH8 |
69.2 ± 1.8 |
38.5 ± 0.6 |
54.1 ± 1.1 |
65.7 ± 1.0 |
1.79 ± 0.03 |
1.05 ± 0.03 |
| RH9 |
70.5 ± 1.7 |
39.6 ± 0.7 |
55.1 ± 1.1 |
65.1 ± 1.0 |
1.78 ± 0.03 |
1.08 ± 0.03 |
| RH10 |
70.5 ± 1.7 |
39.6 ± 0.7 |
55.1 ± 1.1 |
65.1 ± 1.0 |
1.78 ± 0.03 |
1.08 ± 0.03 |
| Average |
97.0 |
39.1 |
53.5 |
64.8 |
3.0 |
1.5 |
| Median |
92.7 |
41.2 |
56.4 |
65.1 |
2.1 |
1.5 |
| Deviation |
35.5 |
8.7 |
9.9 |
4.1 |
2.6 |
0.4 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
61.3 ± 5.2 |
50.6 ± 1.8 |
64.3 ± 4.3 |
67.0 ± 3.4 |
1.21 ± 0.10 |
0.91 ± 0.08 |
| VC |
123.5 ± 9.4 |
20.8 ± 0.6 |
32.2 ± 2.1 |
81.4 ± 2.8 |
5.94 ± 0.47 |
1.52 ± 0.13 |
| MX1 |
62.7 ± 5.3 |
50.5 ± 1.8 |
64.3 ± 4.3 |
67.1 ± 3.4 |
1.24 ± 0.11 |
0.93 ± 0.08 |
| MX2 |
65.9 ± 5.9 |
50.0 ± 1.8 |
64.0 ± 4.2 |
67.5 ± 3.3 |
1.32 ± 0.12 |
0.98 ± 0.08 |
| MX3 |
74.4 ± 7.3 |
45.8 ± 1.5 |
61.2 ± 4.1 |
70.4 ± 3.0 |
1.62 ± 0.16 |
1.06 ± 0.08 |
| RH8 |
48.3 ± 5.2 |
42.8 ± 1.3 |
58.8 ± 3.9 |
72.3 ± 2.9 |
1.13 ± 0.12 |
0.67 ± 0.09 |
| RH9 |
49.1 ± 4.9 |
44.0 ± 1.4 |
59.8 ± 4.0 |
71.6 ± 2.9 |
1.12 ± 0.11 |
0.69 ± 0.09 |
| RH10 |
49.1 ± 4.9 |
44.0 ± 1.4 |
59.8 ± 4.0 |
71.6 ± 2.9 |
1.12 ± 0.11 |
0.69 ± 0.09 |
| Average |
66.8 |
43.6 |
58.0 |
71.1 |
1.8 |
0.9 |
| Median |
62.7 |
45.8 |
61.2 |
71.6 |
1.2 |
0.9 |
| Deviation |
24.7 |
9.7 |
10.7 |
4.7 |
1.7 |
0.3 |
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)
| 
