CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Wind Shock Analysis
Event ID: 19990131047
Observation time: 01/13/1999 13.44998 1047 [UT]

Wind spacecraft

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Asymptotic parameters
Shock front normals
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Wave speed and Mach numbers
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Selected
Simple methods
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Individual equations
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 ± 18.0
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 5.23, 10.63, 10.99
Event added to database
Sat Mar 12 21:21:48 2005
Event last processed
Mon Mar 30 23:30:37 2009
Method selected
RH08
Propagation delay to Earth [minutes]
7.325 ± 0.752

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
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] -4.2 ± 0.5 -6.9 ± 2.2
Plasma Beta
0.523 ± 0.494
0.665 ± 0.592
Sound Speed [km/s]
34.55 ± 2.12
43.95 ± 5.66
Alfven Speed [km/s]
37.53 ± 2.86
43.56 ± 3.86

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.856 ± 0.341 0.343 ± 0.656 0.386 ± 0.366 22.72 ± 35.10 158.14 ± 43.48
VC -0.923 ± 0.097 0.034 ± 0.131 0.384 ± 0.364 22.55 ± 14.54 177.92 ± 8.14
MX1 -0.930 ± 0.188 -0.008 ± 0.636 0.367 ± 0.349 21.52 ± 29.30 180.50 ± 39.20
MX2 -0.891 ± 0.119 -0.054 ± 0.505 0.451 ± 0.417 26.78 ± 14.70 183.45 ± 32.48
MX3 -0.904 ± 0.198 0.036 ± 0.407 0.426 ± 0.398 25.19 ± 26.61 177.69 ± 25.79
RH08 -0.988 ± 0.003 -0.026 ± 0.014 0.151 ± 0.150 8.68 ± 1.04 181.50 ± 0.82
RH09 -0.989 ± 0.010 -0.043 ± 0.070 0.140 ± 0.139 8.03 ± 4.02 182.51 ± 4.07
RH10 -0.989 ± 0.010 -0.043 ± 0.070 0.140 ± 0.139 8.03 ± 4.02 182.51 ± 4.07
Average -0.934 0.030 0.305 17.936 178.026
Median -0.923 -0.008 0.384 22.553 181.504
Deviation 0.051 0.131 0.137 8.193 8.309

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 48.9 ± 6.7 376.8 ± 19.2 2.13 ± 0.36
VC 57.9 ± 13.1 409.0 ± 20.9 2.13 ± 0.36
MX1 60.0 ± 13.7 412.5 ± 21.0 2.13 ± 0.36
MX2 57.3 ± 15.1 397.7 ± 20.4 2.13 ± 0.36
MX3 55.7 ± 13.3 402.1 ± 20.5 2.13 ± 0.36
RH08 70.9 ± 12.7 433.1 ± 22.4 2.13 ± 0.36
RH09 71.9 ± 12.9 433.4 ± 22.4 2.13 ± 0.36
RH10 71.9 ± 12.9 433.4 ± 22.4 2.13 ± 0.36
Average 61.8 412.2 2.13
Median 60.0 412.5 2.13
Deviation 8.7 20.4 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 92.4 ± 6.0 17.7 ± 0.5 24.7 ± 1.9 47.9 ± 1.6 5.22 ± 0.47 1.93 ± 0.18
VC 95.5 ± 7.2 14.0 ± 0.4 19.9 ± 1.5 49.1 ± 1.6 6.85 ± 0.69 1.95 ± 0.20
MX1 95.4 ± 7.3 13.1 ± 0.4 18.8 ± 1.4 49.4 ± 1.6 7.30 ± 0.74 1.94 ± 0.20
MX2 94.3 ± 7.4 14.2 ± 0.4 20.3 ± 1.5 49.1 ± 1.6 6.64 ± 0.68 1.93 ± 0.20
MX3 95.6 ± 7.1 14.9 ± 0.4 21.1 ± 1.6 48.9 ± 1.6 6.44 ± 0.64 1.96 ± 0.20
RH8 92.9 ± 7.3 8.4 ± 0.2 12.3 ± 0.9 50.4 ± 1.6 11.07 ± 1.14 1.85 ± 0.20
RH9 92.3 ± 7.3 8.0 ± 0.2 11.7 ± 0.9 50.5 ± 1.6 11.62 ± 1.20 1.83 ± 0.20
RH10 92.3 ± 7.3 8.0 ± 0.2 11.7 ± 0.9 50.5 ± 1.6 11.62 ± 1.20 1.83 ± 0.20
Average 93.8 12.3 17.6 49.5 8.3 1.9
Median 94.3 14.0 19.9 49.4 7.3 1.9
Deviation 1.5 3.7 5.0 0.9 2.6 0.1

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 48.0 ± 7.8 21.4 ± 1.0 28.6 ± 2.5 58.4 ± 2.5 2.25 ± 0.39 0.82 ± 0.10
VC 48.8 ± 8.2 16.8 ± 0.8 23.1 ± 2.1 59.8 ± 2.5 2.90 ± 0.51 0.81 ± 0.11
MX1 48.7 ± 8.3 15.8 ± 0.7 21.8 ± 1.9 60.1 ± 2.5 3.09 ± 0.55 0.81 ± 0.11
MX2 48.0 ± 7.6 17.2 ± 0.8 23.5 ± 2.1 59.7 ± 2.5 2.80 ± 0.46 0.80 ± 0.10
MX3 49.0 ± 7.8 17.9 ± 0.8 24.5 ± 2.2 59.5 ± 2.5 2.73 ± 0.46 0.82 ± 0.10
RH8 47.3 ± 9.8 10.1 ± 0.5 14.3 ± 1.3 61.3 ± 2.6 4.67 ± 1.01 0.77 ± 0.13
RH9 47.0 ± 9.8 9.6 ± 0.4 13.5 ± 1.2 61.4 ± 2.6 4.90 ± 1.07 0.76 ± 0.13
RH10 47.0 ± 9.8 9.6 ± 0.4 13.5 ± 1.2 61.4 ± 2.6 4.90 ± 1.07 0.76 ± 0.13
Average 48.0 14.8 20.4 60.2 3.5 0.8
Median 48.0 16.8 23.1 60.1 3.1 0.8
Deviation 0.8 4.5 5.8 1.1 1.1 0.0

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 Mon Apr 13 08:55:21 2009
Michael L Stevens (mstevens@cfa.harvard.edu)

   
 

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