Interplanetary Shock Analysis Pages
Database: Wind Shock Analysis
Event ID: 20012941640
10/21/2001 294.69495 1640 [UT]
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MIT Space
Plasma Group Interplanetary Shock Analysis Pages Database: Wind Shock Analysis Event ID: 20012941640 10/21/2001 294.69495 1640 [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 | 2001 |
| Fractional day of year | 294.694948 |
| Arrival time of shock [seconds of day] | 60043.5 ± 3.0 |
| Shock type | FF |
| Electron data availability | 0 | X GSE location of spacecraft [Re] | 43.246 |
| Y GSE location of spacecraft [Re] | -9.266 |
| Z GSE location of spacecraft [Re] | 3.473 |
| Upstream plasma points selected for analysis | 0009 |
| Upstream field points selected for analysis | 0286 |
| Downstream plasma points selected for analysis | 0009 |
| Downstream field points selected for analysis | 0315 |
| Minimum chisq/dof for RH8,RH9,RH10 | 2.95, 6.13, 6.36 |
| Event added to database |
Mon Feb 14 11:15:59 2005 |
| Event last processed |
Sun Mar 13 11:11:41 2005 |
| Method selected |
RH08 |
| Propagation delay to Earth [minutes] |
7.045 ± 0.356 |
Asymptotic plasma parameters (About, Top)
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| Vx GSE [km/s] | -369.7 ± 7.3 | -557.2 ± 10.7 |
| Vy GSE [km/s] | 14.4 ± 15.5 | -18.3 ± 25.0 |
| Vz GSE [km/s] | 30.0 ± 14.9 | -24.9 ± 31.2 |
| Wi [km/s] | 49.8 ± 11.1 | 116.1 ± 12.7 |
| We [km/s] | 1574.3 ± 351.5 | 3671.0 ± 401.1 |
| Ni [n/cc] | 7.7 ± 2.5 | 28.9 ± 3.5 |
| Bx GSE [nT] | -2.0 ± 1.1 | -3.0 ± 2.1 |
| By GSE [nT] | -0.6 ± 3.4 | 10.0 ± 10.6 |
| Bz GSE [nT] | -4.3 ± 0.6 | -4.9 ± 15.5 |
| Plasma Beta |
1.498 ± 1.502 |
2.104 ± 1.804 |
| Sound Speed [km/s] |
64.27 ± 14.35 |
149.87 ± 16.37 |
| Alfven Speed [km/s] |
49.12 ± 14.58 |
85.45 ± 15.06 |
Best values of shock front normal for each method (About, Top)
| Method | Nx | Ny | Nz | Theta [degrees] | Phi [degrees] |
| MC | -0.875 ± 0.210 | -0.082 ± 0.733 | -0.478 ± 0.438 | -28.55 ± 23.85 | 185.35 ± 48.03 |
| VC | -0.949 ± 0.049 | -0.169 ± 0.142 | -0.267 ± 0.260 | -15.49 ± 9.07 | 190.07 ± 8.54 |
| MX1 | -0.993 ± 0.057 | -0.097 ± 0.510 | -0.071 ± 0.071 | -4.10 ± 21.68 | 185.59 ± 29.41 |
| MX2 | -0.989 ± 0.019 | -0.044 ± 0.148 | -0.139 ± 0.138 | -7.99 ± 7.15 | 182.53 ± 8.55 |
| MX3 | -0.990 ± 0.016 | -0.058 ± 0.140 | -0.129 ± 0.128 | -7.39 ± 6.14 | 183.33 ± 8.13 |
| RH08 | -0.987 ± 0.003 | -0.061 ± 0.016 | -0.151 ± 0.150 | -8.68 ± 0.97 | 183.51 ± 0.91 |
| RH09 | -0.987 ± 0.011 | -0.061 ± 0.070 | -0.151 ± 0.150 | -8.68 ± 4.03 | 183.51 ± 4.07 |
| RH10 | -0.988 ± 0.011 | -0.043 ± 0.070 | -0.151 ± 0.150 | -8.68 ± 4.02 | 182.51 ± 4.07 |
| Average | -0.970 | -0.077 | -0.192 | -11.192 | 184.551 |
| Median | -0.987 | -0.061 | -0.151 | -8.675 | 183.510 |
| Deviation | 0.041 | 0.041 | 0.127 | 7.687 | 2.512 |
Key shock parameters (About, Top)
| Method | ThetaBn | Shock Speed | Compression |
| MC | 48.5 ± 8.4 | 582.5 ± 30.9 | 4.31 ± 1.88 |
| VC | 57.4 ± 5.2 | 624.5 ± 30.9 | 4.31 ± 1.88 |
| MX1 | 66.5 ± 6.6 | 636.2 ± 30.7 | 4.31 ± 1.88 |
| MX2 | 63.7 ± 8.5 | 636.8 ± 30.3 | 4.31 ± 1.88 |
| MX3 | 64.1 ± 8.0 | 637.4 ± 30.4 | 4.31 ± 1.88 |
| RH08 | 63.1 ± 7.9 | 636.4 ± 30.3 | 4.31 ± 1.88 |
| RH09 | 63.1 ± 7.9 | 636.4 ± 30.3 | 4.31 ± 1.88 |
| RH10 | 63.2 ± 8.5 | 636.0 ± 30.2 | 4.31 ± 1.88 |
| Average | 61.2 | 628.3 | 4.31 |
| Median | 63.2 | 636.4 | 4.31 |
| Deviation | 5.7 | 19.0 | 0.00 |
Upstream wave speeds and mach numbers (About, Top)
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Mach |
Mach |
| MC | 274.7 ± 12.0 | 24.9 ± 2.2 | 32.5 ± 9.7 | 79.2 ± 4.2 | 11.06 ± 0.69 | 3.48 ± 0.23 |
| VC | 284.2 ± 8.2 | 19.9 ± 1.7 | 26.5 ± 7.9 | 80.6 ± 4.2 | 14.32 ± 0.94 | 3.53 ± 0.20 |
| MX1 | 272.7 ± 6.8 | 14.6 ± 1.2 | 19.6 ± 5.8 | 81.8 ± 4.2 | 18.82 ± 1.23 | 3.34 ± 0.19 |
| MX2 | 275.9 ± 8.5 | 16.2 ± 1.4 | 21.7 ± 6.5 | 81.5 ± 4.2 | 17.11 ± 1.08 | 3.39 ± 0.20 |
| MX3 | 276.1 ± 8.2 | 16.0 ± 1.4 | 21.5 ± 6.4 | 81.5 ± 4.2 | 17.36 ± 1.10 | 3.40 ± 0.19 |
| RH8 | 277.0 ± 8.4 | 16.6 ± 1.4 | 22.2 ± 6.6 | 81.4 ± 4.2 | 16.79 ± 1.06 | 3.41 ± 0.20 |
| RH9 | 277.0 ± 8.4 | 16.6 ± 1.4 | 22.2 ± 6.6 | 81.4 ± 4.2 | 16.79 ± 1.06 | 3.41 ± 0.20 |
| RH10 | 276.1 ± 8.7 | 16.5 ± 1.4 | 22.1 ± 6.6 | 81.4 ± 4.2 | 16.79 ± 1.06 | 3.40 ± 0.20 |
| Average | 276.7 | 17.7 | 23.6 | 81.1 | 16.1 | 3.4 |
| Median | 276.1 | 16.6 | 22.2 | 81.4 | 16.8 | 3.4 |
| Deviation | 3.3 | 3.3 | 4.1 | 0.8 | 2.4 | 0.1 |
Downstream wave speeds and mach numbers (About, Top)
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Mach |
Mach |
| MC | 81.8 ± 15.2 | 50.9 ± 7.6 | 56.6 ± 10.0 | 165.4 ± 14.7 | 1.64 ± 0.36 | 0.50 ± 0.11 |
| VC | 86.1 ± 11.1 | 40.7 ± 6.0 | 46.1 ± 8.1 | 168.3 ± 14.8 | 2.15 ± 0.36 | 0.52 ± 0.09 |
| MX1 | 79.5 ± 9.0 | 29.8 ± 4.3 | 34.1 ± 6.0 | 170.6 ± 14.9 | 2.70 ± 0.33 | 0.47 ± 0.06 |
| MX2 | 81.3 ± 9.5 | 33.1 ± 4.8 | 37.8 ± 6.7 | 170.0 ± 14.8 | 2.48 ± 0.32 | 0.48 ± 0.06 |
| MX3 | 81.5 ± 9.4 | 32.6 ± 4.7 | 37.3 ± 6.6 | 170.1 ± 14.8 | 2.52 ± 0.32 | 0.48 ± 0.06 |
| RH8 | 81.7 ± 9.5 | 33.9 ± 4.9 | 38.7 ± 6.8 | 169.8 ± 14.8 | 2.44 ± 0.32 | 0.48 ± 0.06 |
| RH9 | 81.7 ± 9.5 | 33.9 ± 4.9 | 38.7 ± 6.8 | 169.8 ± 14.8 | 2.44 ± 0.32 | 0.48 ± 0.06 |
| RH10 | 81.2 ± 9.6 | 33.7 ± 4.9 | 38.5 ± 6.8 | 169.8 ± 14.8 | 2.43 ± 0.31 | 0.48 ± 0.06 |
| Average | 81.9 | 36.1 | 41.0 | 169.2 | 2.4 | 0.5 |
| Median | 81.7 | 33.9 | 38.7 | 169.8 | 2.4 | 0.5 |
| Deviation | 1.9 | 6.7 | 7.1 | 1.7 | 0.3 | 0.0 |
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Key plasma parameters
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Velocity
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Magnetic Field
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