CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Wind Shock Analysis
Event ID: 19980240437
Observation time: 01/24/1998 24.19269 0437 [UT]

Wind spacecraft

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Asymptotic parameters
Shock front normals
Key parameters
Wave speed and Mach numbers
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Selected
Simple methods
Rankine
Individual equations
Shock speed
Theta Bn
Mach numbers


General Information (About, Top)

Year 1998
Fractional day of year 24.192691
Arrival time of shock [seconds of day] 16648.5 ± 3.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 234.200
Y GSE location of spacecraft [Re] 10.589
Z GSE location of spacecraft [Re] -21.700
Upstream plasma points selected for analysis 0008
Upstream field points selected for analysis 0263
Downstream plasma points selected for analysis 0005
Downstream field points selected for analysis 0219
Minimum chisq/dof for RH8,RH9,RH10 14.23, 18.69, 19.37
Event added to database
Mon Feb 14 11:05:53 2005
Event last processed
Mon Mar 30 17:30:52 2009
Method selected
RH08
Propagation delay to Earth [minutes]
56.343 ± 4.268

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -366.9 ± 1.2 -400.0 ± 3.7
Vy GSE [km/s] 8.9 ± 0.8 8.8 ± 1.3
Vz GSE [km/s] -1.7 ± 0.6 34.3 ± 2.6
Wi [km/s] 19.8 ± 0.4 29.1 ± 1.4
We [km/s] 627.6 ± 11.1 921.8 ± 44.9
Ni [n/cc] 9.8 ± 0.4 21.4 ± 1.2
Bx GSE [nT] -2.3 ± 0.2 -2.4 ± 1.2
By GSE [nT] 0.9 ± 0.2 4.4 ± 1.2
Bz GSE [nT] -1.3 ± 0.2 -2.6 ± 0.8
Plasma Beta
1.040 ± 1.067
1.107 ± 1.089
Sound Speed [km/s]
25.62 ± 0.45
37.63 ± 1.83
Alfven Speed [km/s]
19.50 ± 0.61
27.91 ± 1.83

Best values of shock front normal for each method (About, Top)

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.948 ± 0.086 -0.179 ± 0.320 -0.264 ± 0.257 -15.28 ± 13.60 190.70 ± 19.34
VC -0.676 ± 0.048 -0.001 ± 0.030 0.737 ± 0.560 47.50 ± 3.73 180.12 ± 2.54
MX1 -0.929 ± 0.140 0.149 ± 0.093 0.339 ± 0.326 19.83 ± 23.86 170.91 ± 5.54
MX2 -0.762 ± 0.059 0.176 ± 0.069 0.623 ± 0.526 38.56 ± 5.33 166.96 ± 5.13
MX3 -0.711 ± 0.055 0.196 ± 0.070 0.675 ± 0.547 42.48 ± 4.55 164.60 ± 5.55
RH08 -0.910 ± 0.009 0.236 ± 0.019 0.341 ± 0.327 19.92 ± 1.25 165.46 ± 1.17
RH09 -0.996 ± 0.006 0.061 ± 0.066 -0.061 ± 0.061 -3.52 ± 4.02 176.49 ± 3.79
RH10 -0.996 ± 0.006 0.061 ± 0.068 -0.061 ± 0.061 -3.52 ± 4.02 176.49 ± 3.91
Average -0.866 0.087 0.291 18.244 173.967
Median -0.910 0.149 0.341 19.925 176.490
Deviation 0.130 0.134 0.381 23.703 8.858

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 33.0 ± 4.8 388.9 ± 6.1 2.23 ± 0.18
VC 78.4 ± 4.5 335.6 ± 8.6 2.23 ± 0.18
MX1 49.8 ± 4.5 421.6 ± 7.5 2.23 ± 0.18
MX2 67.4 ± 4.6 367.4 ± 8.0 2.23 ± 0.18
MX3 71.1 ± 4.6 348.8 ± 8.1 2.23 ± 0.18
RH08 48.9 ± 4.6 414.2 ± 7.2 2.23 ± 0.18
RH09 30.7 ± 4.3 425.0 ± 6.5 2.23 ± 0.18
RH10 30.7 ± 4.3 425.0 ± 6.5 2.23 ± 0.18
Average 51.3 390.8 2.23
Median 49.8 414.2 2.23
Deviation 19.2 36.3 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 42.3 ± 1.2 14.6 ± 0.3 16.3 ± 0.5 28.7 ± 0.3 2.90 ± 0.07 1.47 ± 0.04
VC 88.9 ± 0.9 3.1 ± 0.1 3.9 ± 0.1 32.1 ± 0.3 28.31 ± 0.48 2.77 ± 0.03
MX1 80.0 ± 1.0 10.6 ± 0.2 12.6 ± 0.4 30.4 ± 0.3 7.55 ± 0.12 2.63 ± 0.04
MX2 87.3 ± 0.9 6.1 ± 0.1 7.5 ± 0.2 31.6 ± 0.3 14.41 ± 0.24 2.76 ± 0.03
MX3 87.3 ± 0.8 5.1 ± 0.1 6.3 ± 0.2 31.8 ± 0.3 17.14 ± 0.29 2.74 ± 0.03
RH8 78.7 ± 1.0 10.8 ± 0.2 12.8 ± 0.4 30.3 ± 0.3 7.27 ± 0.12 2.59 ± 0.03
RH9 58.8 ± 1.1 15.1 ± 0.3 16.8 ± 0.5 28.4 ± 0.3 3.90 ± 0.07 2.07 ± 0.04
RH10 58.8 ± 1.1 15.1 ± 0.3 16.8 ± 0.5 28.4 ± 0.3 3.90 ± 0.07 2.07 ± 0.04
Average 72.8 10.1 11.6 30.2 10.7 2.4
Median 80.0 10.8 12.8 30.4 7.6 2.6
Deviation 17.3 4.8 5.1 1.5 8.8 0.5

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 20.4 ± 3.6 21.0 ± 0.9 23.4 ± 1.5 41.9 ± 1.5 0.98 ± 0.21 0.49 ± 0.10
VC 40.0 ± 3.1 4.5 ± 0.2 5.6 ± 0.4 46.7 ± 1.6 8.87 ± 1.01 0.86 ± 0.09
MX1 37.1 ± 3.4 15.3 ± 0.6 18.0 ± 1.2 44.3 ± 1.5 2.44 ± 0.31 0.84 ± 0.10
MX2 39.7 ± 3.0 8.7 ± 0.3 10.7 ± 0.7 46.1 ± 1.6 4.56 ± 0.52 0.86 ± 0.09
MX3 39.5 ± 2.9 7.3 ± 0.3 9.0 ± 0.6 46.3 ± 1.6 5.40 ± 0.60 0.85 ± 0.08
RH8 36.4 ± 3.3 15.6 ± 0.6 18.3 ± 1.2 44.2 ± 1.5 2.34 ± 0.30 0.82 ± 0.09
RH9 28.1 ± 3.6 21.7 ± 1.0 24.0 ± 1.6 41.5 ± 1.5 1.30 ± 0.21 0.68 ± 0.10
RH10 28.1 ± 3.6 21.7 ± 1.0 24.0 ± 1.6 41.5 ± 1.5 1.30 ± 0.21 0.68 ± 0.10
Average 33.7 14.5 16.6 44.1 3.4 0.8
Median 37.1 15.6 18.3 44.3 2.4 0.8
Deviation 7.2 6.9 7.3 2.2 2.7 0.1

Survey interval (About, Top)
Survey of solar wind interval
Selected data (About, Top)
Key plasma parameters
Survey
Velocity
V

Magnetic Field
B


Simple Methods (About, Top)
Simple methods
Rankine Chi^2 Contour (About, Top)

Chisq


Shock Speed (About, Top)
Shock Speed

Theta Bn (About, Top)
Theta Bn

Mach Numbers (About, Top)

Upstream wave speeds
Upstream Mach numbers
Downsteam wave speeds
Downstream mach numbers
Page updated Fri Jun 13 11:06:02 2014
Michael L Stevens (mstevens@cfa.harvard.edu)

   
 

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