Database: Wind Shock Analysis
Event ID: 19982311840
Observation time: 08/19/1998 231.77825 1840 [UT]
|
|
General
Information (About, Top)
| Year |
1998 |
| Fractional day of year |
231.778247 |
| Arrival time of shock [seconds of day] |
67240.5 ± 3.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
53.925 |
| Y GSE location of spacecraft [Re] |
-37.036 |
| Z GSE location of spacecraft [Re] |
-3.234 |
| Upstream plasma points selected for analysis |
0009 |
| Upstream field points selected for analysis |
0280 |
| Downstream plasma points selected for analysis |
0008
|
| Downstream field points selected for analysis |
0253 |
| Minimum chisq/dof for RH8,RH9,RH10 |
6.80, 15.07, 15.36 |
Event added to database
|
Mon Feb 14 11:06:53 2005
|
Event last processed
|
Mon Mar 30 17:56:17 2009
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
11.361 ± 0.650
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-275.6 ± 2.2 |
-312.9 ± 4.1 |
| Vy GSE [km/s] |
-6.4 ± 2.3 |
-35.0 ± 3.5 |
| Vz GSE [km/s] |
1.0 ± 1.7 |
-2.5 ± 1.1 |
| Wi [km/s] |
18.0 ± 0.6 |
26.2 ± 1.0 |
| We [km/s] |
570.6 ± 20.3 |
829.9 ± 32.5 |
| Ni [n/cc] |
7.8 ± 0.3 |
17.9 ± 0.6 |
| Bx GSE [nT] |
-2.4 ± 0.4 |
-2.7 ± 0.8 |
| By GSE [nT] |
0.7 ± 0.3 |
3.8 ± 0.5 |
| Bz GSE [nT] |
-2.5 ± 0.2 |
-5.8 ± 0.6 |
Plasma Beta
|
0.422 ± 0.407
|
0.465 ± 0.483
|
Sound Speed [km/s]
|
23.30 ± 0.83
|
33.88 ± 1.33
|
Alfven Speed [km/s]
|
27.92 ± 1.36
|
38.68 ± 2.36
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.873 ± 0.098 |
-0.379 ± 0.210 |
-0.308 ± 0.298 |
-17.93 ± 7.26 |
203.45 ± 13.77 |
| VC |
-0.791 ± 0.062 |
-0.608 ± 0.081 |
-0.072 ± 0.072 |
-4.15 ± 2.27 |
217.54 ± 5.88 |
| MX1 |
-0.867 ± 0.054 |
-0.400 ± 0.104 |
-0.297 ± 0.288 |
-17.30 ± 5.35 |
204.77 ± 6.83 |
| MX2 |
-0.857 ± 0.048 |
-0.416 ± 0.080 |
-0.304 ± 0.295 |
-17.72 ± 6.24 |
205.88 ± 5.25 |
| MX3 |
-0.851 ± 0.048 |
-0.426 ± 0.070 |
-0.308 ± 0.298 |
-17.93 ± 6.90 |
206.62 ± 4.61 |
| RH08 |
-0.924 ± 0.005 |
-0.328 ± 0.013 |
-0.196 ± 0.193 |
-11.28 ± 0.76 |
199.55 ± 0.79 |
| RH09 |
-0.996 ± 0.006 |
-0.044 ± 0.067 |
-0.073 ± 0.072 |
-4.16 ± 4.04 |
182.51 ± 3.82 |
| RH10 |
-0.997 ± 0.005 |
-0.044 ± 0.068 |
-0.061 ± 0.061 |
-3.52 ± 4.03 |
182.51 ± 3.90 |
| Average |
-0.895 |
-0.330 |
-0.202 |
-11.748 |
200.353 |
| Median |
-0.867 |
-0.379 |
-0.196 |
-11.276 |
204.769 |
| Deviation |
0.073 |
0.195 |
0.117 |
6.823 |
12.141 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
42.8 ± 7.8 |
320.9 ± 5.8 |
2.30 ± 0.11 |
| VC |
62.2 ± 7.8 |
304.8 ± 5.4 |
2.30 ± 0.11 |
| MX1 |
44.1 ± 7.8 |
320.2 ± 5.8 |
2.30 ± 0.11 |
| MX2 |
44.6 ± 7.7 |
317.8 ± 5.7 |
2.30 ± 0.11 |
| MX3 |
44.9 ± 7.6 |
316.3 ± 5.7 |
2.30 ± 0.11 |
| RH08 |
45.5 ± 8.1 |
334.7 ± 6.2 |
2.30 ± 0.11 |
| RH09 |
43.7 ± 7.4 |
341.6 ± 7.4 |
2.30 ± 0.11 |
| RH10 |
44.3 ± 7.4 |
341.7 ± 7.4 |
2.30 ± 0.11 |
| Average |
46.5 |
324.7 |
2.30 |
| Median |
44.6 |
320.9 |
2.30 |
| Deviation |
6.4 |
13.2 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
78.2 ± 2.9 |
14.2 ± 0.3 |
20.5 ± 1.0 |
33.5 ± 1.0 |
5.49 ± 0.29 |
2.34 ± 0.14 |
| VC |
83.0 ± 3.0 |
8.6 ± 0.2 |
13.0 ± 0.6 |
35.4 ± 1.0 |
9.71 ± 0.53 |
2.35 ± 0.14 |
| MX1 |
78.9 ± 2.9 |
13.9 ± 0.3 |
20.0 ± 1.0 |
33.6 ± 1.0 |
5.70 ± 0.30 |
2.35 ± 0.14 |
| MX2 |
79.2 ± 2.9 |
13.7 ± 0.3 |
19.9 ± 1.0 |
33.7 ± 1.0 |
5.77 ± 0.31 |
2.35 ± 0.14 |
| MX3 |
79.4 ± 2.9 |
13.6 ± 0.3 |
19.8 ± 1.0 |
33.7 ± 1.0 |
5.83 ± 0.31 |
2.36 ± 0.14 |
| RH8 |
78.1 ± 2.8 |
13.5 ± 0.3 |
19.6 ± 1.0 |
33.8 ± 1.0 |
5.80 ± 0.30 |
2.32 ± 0.13 |
| RH9 |
66.7 ± 2.3 |
14.0 ± 0.3 |
20.2 ± 1.0 |
33.6 ± 1.0 |
4.77 ± 0.24 |
1.99 ± 0.11 |
| RH10 |
66.7 ± 2.3 |
13.8 ± 0.3 |
20.0 ± 1.0 |
33.6 ± 1.0 |
4.83 ± 0.24 |
1.98 ± 0.11 |
| Average |
76.3 |
13.2 |
19.1 |
33.9 |
6.0 |
2.3 |
| Median |
78.9 |
13.8 |
20.0 |
33.7 |
5.8 |
2.4 |
| Deviation |
6.1 |
1.9 |
2.5 |
0.6 |
1.6 |
0.2 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
33.7 ± 2.5 |
20.3 ± 0.8 |
28.4 ± 1.7 |
47.3 ± 2.0 |
1.66 ± 0.15 |
0.71 ± 0.07 |
| VC |
35.9 ± 1.7 |
12.2 ± 0.5 |
18.0 ± 1.1 |
50.0 ± 2.1 |
2.95 ± 0.20 |
0.72 ± 0.05 |
| MX1 |
34.1 ± 2.4 |
19.8 ± 0.7 |
27.8 ± 1.7 |
47.5 ± 2.0 |
1.73 ± 0.15 |
0.72 ± 0.07 |
| MX2 |
34.3 ± 2.4 |
19.6 ± 0.7 |
27.6 ± 1.7 |
47.6 ± 2.0 |
1.75 ± 0.15 |
0.72 ± 0.06 |
| MX3 |
34.4 ± 2.3 |
19.5 ± 0.7 |
27.4 ± 1.7 |
47.6 ± 2.0 |
1.77 ± 0.15 |
0.72 ± 0.06 |
| RH8 |
33.6 ± 2.8 |
19.3 ± 0.7 |
27.1 ± 1.7 |
47.7 ± 2.0 |
1.75 ± 0.17 |
0.71 ± 0.07 |
| RH9 |
28.0 ± 3.9 |
20.0 ± 0.7 |
28.0 ± 1.7 |
47.4 ± 2.0 |
1.41 ± 0.21 |
0.59 ± 0.09 |
| RH10 |
28.0 ± 3.9 |
19.7 ± 0.7 |
27.7 ± 1.7 |
47.5 ± 2.0 |
1.42 ± 0.21 |
0.59 ± 0.09 |
| Average |
32.7 |
18.8 |
26.5 |
47.8 |
1.8 |
0.7 |
| Median |
34.1 |
19.7 |
27.7 |
47.6 |
1.7 |
0.7 |
| Deviation |
3.0 |
2.7 |
3.4 |
0.9 |
0.5 |
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)
| 
