Interplanetary Shock Analysis Pages
Database: Wind Shock Analysis
Event ID: 19990131047
01/13/1999 13.44998 1047 [UT]
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MIT Space
Plasma Group Interplanetary Shock Analysis Pages Database: Wind Shock Analysis Event ID: 19990131047 01/13/1999 13.44998 1047 [UT] |
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General information Asymptotic parameters Shock front normals Key parameters Wave speed and Mach numbers |
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Shock
speed Theta Bn Mach numbers |
General Information (About, Top)
| Year | 1999 |
| Fractional day of year | 13.449983 |
| Arrival time of shock [seconds of day] | 38878.5 ± 16.0 |
| Shock type | FF |
| Electron data availability | 0 | X GSE location of spacecraft [Re] | 28.680 |
| Y GSE location of spacecraft [Re] | -59.396 |
| Z GSE location of spacecraft [Re] | -21.231 |
| Upstream plasma points selected for analysis | 0007 |
| Upstream field points selected for analysis | 0260 |
| Downstream plasma points selected for analysis | 0008 |
| Downstream field points selected for analysis | 0260 |
| Minimum chisq/dof for RH8,RH9,RH10 | 5.27, 10.93, 11.28 |
| Event added to database |
Sat Mar 12 21:21:48 2005 |
| Event last processed |
Sun Mar 13 11:23:38 2005 |
| Method selected |
RH08 |
| Propagation delay to Earth [minutes] |
7.232 ± 0.697 |
Asymptotic plasma parameters (About, Top)
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| Vx GSE [km/s] | -345.8 ± 7.1 | -389.3 ± 10.6 |
| Vy GSE [km/s] | -19.3 ± 4.6 | -17.6 ± 3.7 |
| Vz GSE [km/s] | -13.1 ± 4.4 | 3.9 ± 6.9 |
| Wi [km/s] | 26.8 ± 1.6 | 34.0 ± 4.4 |
| We [km/s] | 846.3 ± 52.0 | 1076.6 ± 138.7 |
| Ni [n/cc] | 9.7 ± 1.1 | 20.3 ± 1.8 |
| Bx GSE [nT] | 1.1 ± 0.9 | -0.1 ± 2.8 |
| By GSE [nT] | -2.6 ± 1.5 | -4.4 ± 2.0 |
| Bz GSE [nT] | -3.5 ± 0.5 | -6.1 ± 2.2 |
| Plasma Beta |
0.662 ± 0.636 |
0.761 ± 0.691 |
| Sound Speed [km/s] |
34.55 ± 2.12 |
43.95 ± 5.66 |
| Alfven Speed [km/s] |
33.44 ± 2.85 |
40.80 ± 3.74 |
Best values of shock front normal for each method (About, Top)
| Method | Nx | Ny | Nz | Theta [degrees] | Phi [degrees] |
| MC | -0.848 ± 0.359 | 0.391 ± 0.670 | 0.358 ± 0.342 | 20.99 ± 32.86 | 155.22 ± 44.94 |
| VC | -0.923 ± 0.097 | 0.034 ± 0.131 | 0.384 ± 0.364 | 22.55 ± 14.54 | 177.92 ± 8.14 |
| MX1 | -0.935 ± 0.167 | -0.027 ± 0.648 | 0.354 ± 0.338 | 20.72 ± 26.87 | 181.64 ± 39.71 |
| MX2 | -0.885 ± 0.114 | -0.051 ± 0.515 | 0.462 ± 0.426 | 27.53 ± 13.60 | 183.31 ± 33.34 |
| MX3 | -0.904 ± 0.198 | 0.036 ± 0.407 | 0.426 ± 0.398 | 25.19 ± 26.61 | 177.69 ± 25.79 |
| RH08 | -0.991 ± 0.002 | -0.026 ± 0.014 | 0.128 ± 0.128 | 7.38 ± 1.00 | 181.50 ± 0.80 |
| RH09 | -0.991 ± 0.010 | -0.043 ± 0.070 | 0.128 ± 0.128 | 7.38 ± 4.01 | 182.51 ± 4.07 |
| RH10 | -0.991 ± 0.010 | -0.043 ± 0.070 | 0.128 ± 0.128 | 7.38 ± 4.01 | 182.51 ± 4.07 |
| Average | -0.933 | 0.034 | 0.296 | 17.392 | 177.787 |
| Median | -0.923 | -0.026 | 0.358 | 20.991 | 181.640 |
| Deviation | 0.054 | 0.148 | 0.143 | 8.576 | 9.357 |
Key shock parameters (About, Top)
| Method | ThetaBn | Shock Speed | Compression |
| MC | 47.1 ± 6.8 | 371.4 ± 19.0 | 2.13 ± 0.36 |
| VC | 57.1 ± 15.7 | 409.0 ± 20.9 | 2.13 ± 0.36 |
| MX1 | 60.5 ± 16.6 | 414.6 ± 21.2 | 2.13 ± 0.36 |
| MX2 | 56.4 ± 18.0 | 395.3 ± 20.3 | 2.13 ± 0.36 |
| MX3 | 55.1 ± 15.9 | 402.1 ± 20.5 | 2.13 ± 0.36 |
| RH08 | 70.4 ± 14.8 | 434.0 ± 22.5 | 2.13 ± 0.36 |
| RH09 | 71.0 ± 15.1 | 433.8 ± 22.5 | 2.13 ± 0.36 |
| RH10 | 71.0 ± 15.1 | 433.8 ± 22.5 | 2.13 ± 0.36 |
| Average | 61.1 | 411.7 | 2.13 |
| Median | 60.5 | 414.6 | 2.13 |
| Deviation | 8.9 | 22.3 | 0.00 |
Upstream wave speeds and mach numbers (About, Top)
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Mach |
Mach |
| MC | 90.5 ± 5.8 | 17.5 ± 0.7 | 22.8 ± 1.9 | 44.9 ± 1.5 | 5.19 ± 0.51 | 2.02 ± 0.19 |
| VC | 95.5 ± 7.2 | 13.5 ± 0.5 | 18.2 ± 1.5 | 46.2 ± 1.6 | 7.09 ± 0.77 | 2.07 ± 0.22 |
| MX1 | 95.4 ± 7.4 | 12.2 ± 0.5 | 16.5 ± 1.4 | 46.6 ± 1.6 | 7.86 ± 0.87 | 2.05 ± 0.22 |
| MX2 | 94.2 ± 7.3 | 13.8 ± 0.5 | 18.5 ± 1.6 | 46.1 ± 1.6 | 6.85 ± 0.77 | 2.05 ± 0.22 |
| MX3 | 95.6 ± 7.1 | 14.3 ± 0.5 | 19.1 ± 1.6 | 46.0 ± 1.6 | 6.70 ± 0.73 | 2.08 ± 0.22 |
| RH8 | 92.3 ± 7.3 | 8.1 ± 0.3 | 11.2 ± 1.0 | 47.5 ± 1.6 | 11.41 ± 1.26 | 1.95 ± 0.21 |
| RH9 | 92.1 ± 7.3 | 7.9 ± 0.3 | 10.9 ± 0.9 | 47.5 ± 1.6 | 11.70 ± 1.30 | 1.94 ± 0.21 |
| RH10 | 92.1 ± 7.3 | 7.9 ± 0.3 | 10.9 ± 0.9 | 47.5 ± 1.6 | 11.70 ± 1.30 | 1.94 ± 0.21 |
| Average | 93.5 | 11.9 | 16.0 | 46.5 | 8.6 | 2.0 |
| Median | 94.2 | 13.5 | 18.2 | 46.6 | 7.9 | 2.0 |
| Deviation | 2.0 | 3.6 | 4.5 | 0.9 | 2.6 | 0.1 |
Downstream wave speeds and mach numbers (About, Top)
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Mach |
Mach |
| MC | 46.9 ± 7.9 | 21.5 ± 1.1 | 27.8 ± 2.5 | 56.3 ± 2.8 | 2.19 ± 0.42 | 0.83 ± 0.10 |
| VC | 48.8 ± 8.2 | 16.7 ± 0.8 | 22.1 ± 2.0 | 57.9 ± 2.8 | 2.94 ± 0.55 | 0.84 ± 0.10 |
| MX1 | 48.7 ± 8.4 | 15.0 ± 0.7 | 20.1 ± 1.8 | 58.3 ± 2.8 | 3.25 ± 0.62 | 0.83 ± 0.11 |
| MX2 | 47.9 ± 7.5 | 17.0 ± 0.8 | 22.6 ± 2.1 | 57.8 ± 2.8 | 2.82 ± 0.49 | 0.83 ± 0.09 |
| MX3 | 49.0 ± 7.8 | 17.7 ± 0.9 | 23.3 ± 2.1 | 57.6 ± 2.8 | 2.78 ± 0.50 | 0.85 ± 0.10 |
| RH8 | 47.0 ± 9.9 | 10.0 ± 0.5 | 13.7 ± 1.3 | 59.4 ± 2.8 | 4.71 ± 1.09 | 0.79 ± 0.13 |
| RH9 | 46.8 ± 9.9 | 9.7 ± 0.5 | 13.3 ± 1.2 | 59.5 ± 2.8 | 4.83 ± 1.12 | 0.78 ± 0.13 |
| RH10 | 46.8 ± 9.9 | 9.7 ± 0.5 | 13.3 ± 1.2 | 59.5 ± 2.8 | 4.83 ± 1.12 | 0.78 ± 0.13 |
| Average | 47.8 | 14.7 | 19.5 | 58.3 | 3.5 | 0.8 |
| Median | 47.9 | 16.7 | 22.1 | 58.3 | 3.3 | 0.8 |
| Deviation | 1.0 | 4.4 | 5.5 | 1.1 | 1.1 | 0.0 |
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Key plasma parameters
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Velocity
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Magnetic Field
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