Database: Ace Shock Analysis
Event ID: 19981491503
Observation time: 05/29/1998 149.62742 1503 [UT]
|
|
General
Information (About, Top)
| Year |
1998 |
| Fractional day of year |
149.627419 |
| Arrival time of shock [seconds of day] |
54209.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
| X GSE location of spacecraft [Re] |
0.035 |
| Y GSE location of spacecraft [Re] |
-0.000 |
| Z GSE location of spacecraft [Re] |
-0.004 |
| Upstream plasma points selected for analysis |
0011 |
| Upstream field points selected for analysis |
0043 |
| Downstream plasma points selected for analysis |
0007
|
| Downstream field points selected for analysis |
0028 |
| Minimum chisq/dof for RH8,RH9,RH10 |
18.47, 19.79, 20.29 |
Event added to database
|
Sat Apr 30 21:42:32 2005
|
Event last processed
|
Wed Oct 15 14:22:45 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.006 ± 0.000
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-526.5 ± 5.2 |
-610.3 ± 12.8 |
| Vy GSE [km/s] |
-22.9 ± 3.9 |
73.9 ± 2.5 |
| Vz GSE [km/s] |
0.2 ± 9.2 |
26.0 ± 7.4 |
| Wi [km/s] |
64.8 ± 1.7 |
75.5 ± 3.6 |
| We [km/s] |
2048.0 ± 54.9 |
2388.0 ± 114.2 |
| Ni [n/cc] |
8.7 ± 0.6 |
15.8 ± 0.9 |
| Bx GSE [nT] |
-4.8 ± 0.4 |
-2.4 ± 2.9 |
| By GSE [nT] |
10.7 ± 0.2 |
-11.4 ± 2.4 |
| Bz GSE [nT] |
-0.2 ± 1.0 |
-13.3 ± 2.6 |
Plasma Beta
|
0.562 ± 0.563
|
0.584 ± 0.544
|
Sound Speed [km/s]
|
83.63 ± 2.22
|
97.50 ± 4.68
|
Alfven Speed [km/s]
|
86.80 ± 4.32
|
99.34 ± 4.86
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.605 ± 0.104 |
0.355 ± 0.130 |
-0.713 ± 0.556 |
-45.44 ± 6.96 |
149.56 ± 11.61 |
| VC |
-0.640 ± 0.061 |
0.743 ± 0.054 |
0.196 ± 0.194 |
11.32 ± 4.90 |
130.74 ± 4.66 |
| MX1 |
-0.629 ± 0.203 |
-0.498 ± 0.228 |
0.598 ± 0.514 |
36.70 ± 14.50 |
218.36 ± 18.92 |
| MX2 |
-0.857 ± 0.056 |
0.189 ± 0.139 |
-0.479 ± 0.439 |
-28.63 ± 5.71 |
167.57 ± 9.28 |
| MX3 |
-0.942 ± 0.036 |
0.088 ± 0.140 |
-0.324 ± 0.312 |
-18.91 ± 5.99 |
174.66 ± 8.51 |
| RH08 |
-0.951 ± 0.003 |
-0.264 ± 0.010 |
-0.162 ± 0.161 |
-9.32 ± 0.65 |
195.54 ± 0.58 |
| RH09 |
-0.951 ± 0.013 |
-0.264 ± 0.035 |
-0.162 ± 0.161 |
-9.32 ± 3.44 |
195.54 ± 2.08 |
| RH10 |
-0.951 ± 0.015 |
-0.264 ± 0.040 |
-0.162 ± 0.161 |
-9.32 ± 3.87 |
195.54 ± 2.41 |
| Average |
-0.816 |
0.011 |
-0.151 |
-9.116 |
178.441 |
| Median |
-0.857 |
0.088 |
-0.162 |
-9.324 |
195.543 |
| Deviation |
0.162 |
0.410 |
0.403 |
24.822 |
28.566 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
53.9 ± 4.0 |
459.3 ± 3.5 |
1.87 ± 0.10 |
| VC |
20.0 ± 3.4 |
610.5 ± 4.5 |
1.87 ± 0.10 |
| MX1 |
79.0 ± 3.5 |
396.7 ± 2.2 |
1.87 ± 0.10 |
| MX2 |
57.1 ± 2.9 |
617.4 ± 4.0 |
1.87 ± 0.10 |
| MX3 |
61.0 ± 2.4 |
664.0 ± 4.1 |
1.87 ± 0.10 |
| RH08 |
80.3 ± 2.1 |
609.7 ± 3.5 |
1.87 ± 0.10 |
| RH09 |
80.3 ± 2.1 |
609.7 ± 3.5 |
1.87 ± 0.10 |
| RH10 |
80.3 ± 2.1 |
609.7 ± 30.4 |
1.87 ± 0.10 |
| Average |
64.0 |
572.1 |
1.87 |
| Median |
79.0 |
609.7 |
1.87 |
| Deviation |
21.1 |
92.3 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
149.4 ± 7.3 |
37.3 ± 0.7 |
51.2 ± 2.5 |
114.7 ± 2.5 |
4.01 ± 0.17 |
1.30 ± 0.06 |
| VC |
290.7 ± 4.3 |
68.8 ± 1.1 |
81.6 ± 4.1 |
99.0 ± 2.4 |
4.22 ± 0.08 |
2.94 ± 0.06 |
| MX1 |
54.0 ± 6.4 |
11.5 ± 0.2 |
16.6 ± 0.8 |
120.0 ± 2.5 |
4.68 ± 0.53 |
0.45 ± 0.05 |
| MX2 |
170.7 ± 6.3 |
34.0 ± 0.6 |
47.1 ± 2.3 |
115.7 ± 2.5 |
5.02 ± 0.14 |
1.48 ± 0.05 |
| MX3 |
170.2 ± 5.8 |
30.1 ± 0.5 |
42.1 ± 2.1 |
116.8 ± 2.5 |
5.65 ± 0.13 |
1.46 ± 0.04 |
| RH8 |
103.1 ± 5.6 |
10.2 ± 0.2 |
14.6 ± 0.7 |
120.2 ± 2.5 |
10.15 ± 0.42 |
0.86 ± 0.04 |
| RH9 |
103.1 ± 5.6 |
10.2 ± 0.2 |
14.6 ± 0.7 |
120.2 ± 2.5 |
10.15 ± 0.42 |
0.86 ± 0.04 |
| RH10 |
103.1 ± 5.6 |
10.2 ± 0.2 |
14.6 ± 0.7 |
120.2 ± 2.5 |
10.15 ± 0.42 |
0.86 ± 0.04 |
| Average |
143.0 |
26.5 |
35.3 |
115.8 |
6.8 |
1.3 |
| Median |
149.4 |
30.1 |
42.1 |
120.0 |
5.7 |
1.3 |
| Deviation |
71.8 |
20.7 |
24.5 |
7.2 |
2.9 |
0.8 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
82.5 ± 10.7 |
43.1 ± 1.2 |
58.6 ± 2.9 |
132.5 ± 3.8 |
1.92 ± 0.26 |
0.62 ± 0.09 |
| VC |
160.1 ± 8.0 |
79.5 ± 2.1 |
93.4 ± 4.6 |
114.4 ± 3.4 |
2.02 ± 0.13 |
1.40 ± 0.09 |
| MX1 |
33.9 ± 8.4 |
13.3 ± 0.4 |
18.9 ± 0.9 |
138.6 ± 4.0 |
2.56 ± 0.67 |
0.25 ± 0.06 |
| MX2 |
92.8 ± 12.5 |
39.3 ± 1.1 |
53.9 ± 2.6 |
133.6 ± 3.9 |
2.37 ± 0.34 |
0.70 ± 0.10 |
| MX3 |
91.0 ± 12.9 |
34.8 ± 1.0 |
48.2 ± 2.4 |
134.9 ± 3.9 |
2.62 ± 0.40 |
0.68 ± 0.10 |
| RH8 |
53.0 ± 12.5 |
11.7 ± 0.3 |
16.7 ± 0.8 |
138.8 ± 4.0 |
4.53 ± 1.11 |
0.38 ± 0.09 |
| RH9 |
53.0 ± 12.5 |
11.7 ± 0.3 |
16.7 ± 0.8 |
138.8 ± 4.0 |
4.53 ± 1.11 |
0.38 ± 0.09 |
| RH10 |
53.0 ± 12.5 |
11.7 ± 0.3 |
16.7 ± 0.8 |
138.8 ± 4.0 |
4.53 ± 1.11 |
0.38 ± 0.09 |
| Average |
77.4 |
30.6 |
40.4 |
133.8 |
3.1 |
0.6 |
| Median |
82.5 |
34.8 |
48.2 |
138.6 |
2.6 |
0.6 |
| Deviation |
39.6 |
23.9 |
28.1 |
8.3 |
1.2 |
0.4 |
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)
| 
