Database: Ace Shock Analysis
Event ID: 19981860315
Observation time: 07/05/1998 186.13609 0315 [UT]
|
|
General
Information (About, Top)
| Year |
1998 |
| Fractional day of year |
186.136088 |
| Arrival time of shock [seconds of day] |
11758.0 ± 60.0 |
| Shock type |
FF |
| Electron data availability |
0 |
| X GSE location of spacecraft [Re] |
0.036 |
| Y GSE location of spacecraft [Re] |
0.006 |
| Z GSE location of spacecraft [Re] |
-0.000 |
| Upstream plasma points selected for analysis |
0009 |
| Upstream field points selected for analysis |
0036 |
| Downstream plasma points selected for analysis |
0009
|
| Downstream field points selected for analysis |
0034 |
| Minimum chisq/dof for RH8,RH9,RH10 |
35.08, 38.04, 41.50 |
Event added to database
|
Sat Apr 30 21:42:41 2005
|
Event last processed
|
Wed Oct 15 14:25:55 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] |
-441.7 ± 3.1 |
-510.3 ± 8.9 |
| Vy GSE [km/s] |
-11.1 ± 5.4 |
-27.8 ± 5.0 |
| Vz GSE [km/s] |
-39.6 ± 4.4 |
-8.8 ± 8.2 |
| Wi [km/s] |
53.6 ± 1.3 |
76.4 ± 3.0 |
| We [km/s] |
1694.0 ± 41.6 |
2415.5 ± 93.9 |
| Ni [n/cc] |
6.1 ± 0.5 |
10.2 ± 0.9 |
| Bx GSE [nT] |
2.4 ± 0.5 |
5.3 ± 1.6 |
| By GSE [nT] |
-5.2 ± 0.8 |
5.9 ± 1.2 |
| Bz GSE [nT] |
2.7 ± 0.8 |
-3.2 ± 1.2 |
Plasma Beta
|
0.887 ± 0.889
|
1.629 ± 1.527
|
Sound Speed [km/s]
|
69.00 ± 1.74
|
98.55 ± 3.91
|
Alfven Speed [km/s]
|
57.43 ± 5.27
|
60.65 ± 5.67
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.976 ± 0.032 |
0.199 ± 0.135 |
-0.089 ± 0.089 |
-5.12 ± 10.50 |
168.45 ± 7.91 |
| VC |
-0.894 ± 0.040 |
-0.221 ± 0.096 |
0.390 ± 0.369 |
22.99 ± 4.82 |
193.87 ± 6.11 |
| MX1 |
-0.958 ± 0.030 |
0.277 ± 0.096 |
0.077 ± 0.077 |
4.40 ± 8.16 |
163.86 ± 5.72 |
| MX2 |
-0.869 ± 0.092 |
0.384 ± 0.174 |
0.312 ± 0.301 |
18.15 ± 10.29 |
156.16 ± 11.35 |
| MX3 |
-0.935 ± 0.042 |
0.315 ± 0.108 |
0.161 ± 0.159 |
9.25 ± 7.63 |
161.37 ± 6.63 |
| RH08 |
-0.844 ± 0.018 |
0.404 ± 0.030 |
-0.352 ± 0.337 |
-20.61 ± 2.00 |
154.43 ± 2.00 |
| RH09 |
-0.859 ± 0.024 |
0.393 ± 0.037 |
-0.330 ± 0.317 |
-19.25 ± 3.36 |
155.43 ± 2.43 |
| RH10 |
-0.859 ± 0.033 |
0.393 ± 0.055 |
-0.330 ± 0.317 |
-19.25 ± 4.06 |
155.43 ± 3.63 |
| Average |
-0.899 |
0.268 |
-0.020 |
-1.178 |
163.625 |
| Median |
-0.869 |
0.384 |
0.077 |
4.398 |
161.366 |
| Deviation |
0.050 |
0.210 |
0.299 |
17.498 |
13.189 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
55.2 ± 3.9 |
584.0 ± 3.8 |
1.68 ± 0.17 |
| VC |
89.8 ± 4.4 |
574.1 ± 5.4 |
1.68 ± 0.17 |
| MX1 |
56.1 ± 4.2 |
573.2 ± 4.1 |
1.68 ± 0.17 |
| MX2 |
59.2 ± 5.4 |
522.7 ± 4.2 |
1.68 ± 0.17 |
| MX3 |
57.0 ± 4.6 |
559.2 ± 4.1 |
1.68 ± 0.17 |
| RH08 |
37.0 ± 4.3 |
484.6 ± 2.4 |
1.68 ± 0.17 |
| RH09 |
38.3 ± 4.2 |
493.8 ± 2.5 |
1.68 ± 0.17 |
| RH10 |
38.3 ± 4.2 |
493.8 ± 22.3 |
1.68 ± 0.17 |
| Average |
53.9 |
535.7 |
1.68 |
| Median |
56.1 |
559.2 |
1.68 |
| Deviation |
17.3 |
41.5 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
152.1 ± 4.0 |
26.3 ± 1.3 |
32.8 ± 3.0 |
86.0 ± 2.9 |
5.80 ± 0.29 |
1.77 ± 0.07 |
| VC |
192.5 ± 4.0 |
0.2 ± 0.0 |
0.2 ± 0.0 |
89.9 ± 3.1 |
1144.48 ± 71.07 |
2.14 ± 0.11 |
| MX1 |
156.7 ± 3.9 |
25.6 ± 1.3 |
32.0 ± 2.9 |
86.2 ± 2.9 |
6.14 ± 0.31 |
1.82 ± 0.07 |
| MX2 |
155.8 ± 3.6 |
23.3 ± 1.1 |
29.4 ± 2.7 |
86.8 ± 2.9 |
6.70 ± 0.34 |
1.80 ± 0.07 |
| MX3 |
156.4 ± 3.8 |
24.9 ± 1.2 |
31.3 ± 2.9 |
86.4 ± 2.9 |
6.29 ± 0.32 |
1.81 ± 0.07 |
| RH8 |
102.8 ± 5.1 |
39.0 ± 2.0 |
45.9 ± 4.2 |
81.0 ± 2.5 |
2.64 ± 0.13 |
1.27 ± 0.06 |
| RH9 |
106.4 ± 5.0 |
38.1 ± 2.0 |
45.1 ± 4.1 |
81.4 ± 2.6 |
2.79 ± 0.14 |
1.31 ± 0.06 |
| RH10 |
106.4 ± 5.0 |
38.1 ± 2.0 |
45.1 ± 4.1 |
81.4 ± 2.6 |
2.79 ± 0.14 |
1.31 ± 0.06 |
| Average |
141.1 |
26.9 |
32.7 |
84.9 |
147.2 |
1.7 |
| Median |
155.8 |
26.3 |
32.8 |
86.2 |
6.1 |
1.8 |
| Deviation |
32.4 |
12.7 |
14.9 |
3.2 |
403.0 |
0.3 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
90.9 ± 8.6 |
30.5 ± 2.2 |
34.6 ± 3.2 |
111.7 ± 3.9 |
2.99 ± 0.30 |
0.82 ± 0.09 |
| VC |
115.2 ± 10.0 |
0.2 ± 0.0 |
0.2 ± 0.0 |
115.8 ± 4.1 |
586.08 ± 64.27 |
1.00 ± 0.11 |
| MX1 |
93.0 ± 9.4 |
29.7 ± 2.1 |
33.8 ± 3.2 |
112.0 ± 3.9 |
3.14 ± 0.33 |
0.83 ± 0.10 |
| MX2 |
92.8 ± 10.2 |
27.1 ± 1.9 |
31.0 ± 2.9 |
112.6 ± 3.9 |
3.43 ± 0.39 |
0.83 ± 0.10 |
| MX3 |
92.3 ± 9.7 |
29.0 ± 2.1 |
33.0 ± 3.1 |
112.2 ± 3.9 |
3.20 ± 0.35 |
0.82 ± 0.10 |
| RH8 |
62.1 ± 6.9 |
44.6 ± 3.4 |
48.4 ± 4.5 |
106.9 ± 3.7 |
1.39 ± 0.14 |
0.58 ± 0.08 |
| RH9 |
63.9 ± 7.1 |
43.7 ± 3.3 |
47.6 ± 4.5 |
107.3 ± 3.7 |
1.46 ± 0.15 |
0.60 ± 0.08 |
| RH10 |
63.9 ± 7.1 |
43.7 ± 3.3 |
47.6 ± 4.5 |
107.3 ± 3.7 |
1.46 ± 0.15 |
0.60 ± 0.08 |
| Average |
84.3 |
31.1 |
34.5 |
110.7 |
75.4 |
0.8 |
| Median |
92.3 |
30.5 |
34.6 |
112.0 |
3.1 |
0.8 |
| Deviation |
19.0 |
14.5 |
15.7 |
3.2 |
206.3 |
0.2 |
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)
| 
