Database: Wind Shock Analysis
Event ID: 19980311553
Observation time: 01/31/1998 31.66234 1553 [UT]
|
|
General
Information (About, Top)
| Year |
1998 |
| Fractional day of year |
31.662344 |
| Arrival time of shock [seconds of day] |
57226.5 ± 6.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
235.720 |
| Y GSE location of spacecraft [Re] |
5.987 |
| Z GSE location of spacecraft [Re] |
-26.950 |
| Upstream plasma points selected for analysis |
0010 |
| Upstream field points selected for analysis |
0329 |
| Downstream plasma points selected for analysis |
0007
|
| Downstream field points selected for analysis |
0261 |
| Minimum chisq/dof for RH8,RH9,RH10 |
4.00, 7.66, 7.87 |
Event added to database
|
Mon Feb 14 11:05:57 2005
|
Event last processed
|
Mon Mar 30 17:32:43 2009
|
Method selected
|
RH09
|
Propagation delay to Earth [minutes]
|
57.333 ± 3.023
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-360.5 ± 3.8 |
-403.8 ± 7.0 |
| Vy GSE [km/s] |
-25.4 ± 1.3 |
-16.2 ± 10.2 |
| Vz GSE [km/s] |
6.3 ± 4.8 |
37.6 ± 11.7 |
| Wi [km/s] |
18.7 ± 1.8 |
33.0 ± 2.1 |
| We [km/s] |
590.0 ± 56.0 |
1044.3 ± 65.4 |
| Ni [n/cc] |
6.7 ± 0.5 |
13.3 ± 1.4 |
| Bx GSE [nT] |
5.3 ± 0.4 |
3.0 ± 1.8 |
| By GSE [nT] |
-8.2 ± 0.3 |
-13.2 ± 1.4 |
| Bz GSE [nT] |
-1.0 ± 0.1 |
4.3 ± 2.3 |
Plasma Beta
|
0.052 ± 0.053
|
0.145 ± 0.134
|
Sound Speed [km/s]
|
24.09 ± 2.29
|
42.63 ± 2.67
|
Alfven Speed [km/s]
|
82.68 ± 3.30
|
87.12 ± 5.91
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.671 ± 0.105 |
0.677 ± 0.104 |
0.303 ± 0.293 |
17.63 ± 5.34 |
134.71 ± 8.75 |
| VC |
-0.810 ± 0.121 |
0.175 ± 0.177 |
0.560 ± 0.492 |
34.03 ± 12.08 |
167.77 ± 12.37 |
| MX1 |
-0.699 ± 0.089 |
0.656 ± 0.094 |
0.285 ± 0.277 |
16.54 ± 5.45 |
136.83 ± 7.59 |
| MX2 |
-0.727 ± 0.084 |
0.634 ± 0.095 |
0.264 ± 0.258 |
15.30 ± 6.31 |
138.93 ± 7.31 |
| MX3 |
-0.756 ± 0.093 |
0.609 ± 0.113 |
0.240 ± 0.235 |
13.89 ± 7.80 |
141.17 ± 8.38 |
| RH08 |
-0.963 ± 0.006 |
0.268 ± 0.022 |
-0.039 ± 0.039 |
-2.24 ± 1.16 |
164.46 ± 1.30 |
| RH09 |
-0.942 ± 0.023 |
0.334 ± 0.064 |
0.039 ± 0.039 |
2.24 ± 4.06 |
160.45 ± 3.91 |
| RH10 |
-0.947 ± 0.022 |
0.318 ± 0.065 |
0.039 ± 0.039 |
2.24 ± 4.06 |
161.45 ± 3.91 |
| Average |
-0.814 |
0.459 |
0.211 |
12.454 |
150.721 |
| Median |
-0.756 |
0.609 |
0.264 |
15.296 |
160.446 |
| Deviation |
0.120 |
0.204 |
0.193 |
11.611 |
13.983 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
16.5 ± 1.5 |
317.9 ± 22.5 |
2.05 ± 0.22 |
| VC |
50.1 ± 1.7 |
404.9 ± 19.0 |
2.05 ± 0.22 |
| MX1 |
17.3 ± 1.7 |
329.0 ± 22.1 |
2.05 ± 0.22 |
| MX2 |
18.3 ± 1.9 |
339.8 ± 21.8 |
2.05 ± 0.22 |
| MX3 |
19.6 ± 2.1 |
351.3 ± 21.4 |
2.05 ± 0.22 |
| RH08 |
42.2 ± 2.5 |
422.9 ± 20.5 |
2.05 ± 0.22 |
| RH09 |
37.5 ± 2.5 |
418.5 ± 20.2 |
2.05 ± 0.22 |
| RH10 |
38.5 ± 2.5 |
421.3 ± 20.2 |
2.05 ± 0.22 |
| Average |
30.0 |
375.7 |
2.05 |
| Median |
37.5 |
404.9 |
2.05 |
| Deviation |
13.4 |
45.4 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
91.4 ± 2.6 |
23.0 ± 2.2 |
79.3 ± 3.2 |
83.0 ± 3.2 |
4.01 ± 0.46 |
1.10 ± 0.02 |
| VC |
113.8 ± 4.0 |
15.1 ± 1.3 |
53.1 ± 2.1 |
84.8 ± 2.8 |
7.62 ± 0.87 |
1.34 ± 0.02 |
| MX1 |
91.8 ± 2.7 |
22.9 ± 2.1 |
78.9 ± 3.1 |
83.0 ± 3.2 |
4.05 ± 0.47 |
1.11 ± 0.02 |
| MX2 |
92.0 ± 2.8 |
22.8 ± 2.1 |
78.5 ± 3.1 |
83.1 ± 3.2 |
4.08 ± 0.47 |
1.11 ± 0.02 |
| MX3 |
92.5 ± 2.9 |
22.6 ± 2.1 |
77.9 ± 3.1 |
83.1 ± 3.2 |
4.14 ± 0.48 |
1.11 ± 0.02 |
| RH8 |
82.8 ± 3.6 |
17.5 ± 1.6 |
61.3 ± 2.4 |
84.3 ± 2.9 |
4.78 ± 0.58 |
0.98 ± 0.03 |
| RH9 |
87.3 ± 3.5 |
18.8 ± 1.7 |
65.6 ± 2.6 |
84.1 ± 3.0 |
4.69 ± 0.56 |
1.04 ± 0.02 |
| RH10 |
87.6 ± 3.5 |
18.5 ± 1.7 |
64.7 ± 2.6 |
84.1 ± 3.0 |
4.78 ± 0.57 |
1.04 ± 0.02 |
| Average |
92.4 |
20.1 |
69.9 |
83.7 |
4.8 |
1.1 |
| Median |
91.8 |
22.6 |
77.9 |
84.1 |
4.7 |
1.1 |
| Deviation |
9.3 |
3.1 |
10.1 |
0.7 |
1.2 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
46.7 ± 7.9 |
40.4 ± 2.5 |
83.5 ± 5.7 |
88.2 ± 5.9 |
1.16 ± 0.21 |
0.53 ± 0.09 |
| VC |
59.7 ± 6.6 |
25.5 ± 1.5 |
55.9 ± 3.8 |
93.6 ± 5.8 |
2.35 ± 0.26 |
0.64 ± 0.08 |
| MX1 |
46.6 ± 7.6 |
40.1 ± 2.5 |
83.2 ± 5.6 |
88.3 ± 5.8 |
1.17 ± 0.21 |
0.53 ± 0.09 |
| MX2 |
46.5 ± 7.3 |
39.9 ± 2.4 |
82.7 ± 5.6 |
88.4 ± 5.8 |
1.17 ± 0.20 |
0.53 ± 0.09 |
| MX3 |
46.7 ± 7.0 |
39.5 ± 2.4 |
82.1 ± 5.6 |
88.6 ± 5.8 |
1.19 ± 0.19 |
0.53 ± 0.08 |
| RH8 |
40.0 ± 6.2 |
29.8 ± 1.7 |
64.6 ± 4.4 |
92.3 ± 5.8 |
1.35 ± 0.22 |
0.44 ± 0.08 |
| RH9 |
42.3 ± 5.8 |
32.2 ± 1.9 |
69.1 ± 4.7 |
91.5 ± 5.8 |
1.32 ± 0.20 |
0.46 ± 0.07 |
| RH10 |
42.5 ± 5.9 |
31.7 ± 1.9 |
68.2 ± 4.6 |
91.7 ± 5.8 |
1.35 ± 0.20 |
0.47 ± 0.07 |
| Average |
46.4 |
34.9 |
73.7 |
90.3 |
1.4 |
0.5 |
| Median |
46.6 |
39.5 |
82.1 |
91.5 |
1.3 |
0.5 |
| Deviation |
6.0 |
5.8 |
10.6 |
2.2 |
0.4 |
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 Fri Jun 13 11:06:02 2014
Michael L Stevens
(mstevens@cfa.harvard.edu)
| 
