CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Wind Shock Analysis
Event ID: 20020312138
Observation time: 01/31/2002 31.90151 2138 [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 2002
Fractional day of year 31.901510
Arrival time of shock [seconds of day] 77890.5 ± 3.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 11.169
Y GSE location of spacecraft [Re] -322.410
Z GSE location of spacecraft [Re] 16.180
Upstream plasma points selected for analysis 0007
Upstream field points selected for analysis 0217
Downstream plasma points selected for analysis 0006
Downstream field points selected for analysis 0198
Minimum chisq/dof for RH8,RH9,RH10 41.74, 58.80, 61.91
Event added to database
Mon Feb 14 11:17:46 2005
Event last processed
Mon Mar 30 22:35:57 2009
Method selected
RH08
Propagation delay to Earth [minutes]
7.286 ± 4.817

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -291.5 ± 2.2 -357.9 ± 2.5
Vy GSE [km/s] -17.5 ± 0.8 -22.7 ± 1.1
Vz GSE [km/s] 9.8 ± 4.0 42.0 ± 4.2
Wi [km/s] 22.3 ± 0.9 24.8 ± 2.3
We [km/s] 704.5 ± 27.9 783.2 ± 73.6
Ni [n/cc] 4.8 ± 0.2 10.0 ± 0.4
Bx GSE [nT] 2.0 ± 0.2 -2.1 ± 0.4
By GSE [nT] -5.5 ± 0.1 -11.9 ± 0.2
Bz GSE [nT] -0.3 ± 0.4 -6.0 ± 0.4
Plasma Beta
0.148 ± 0.138
0.071 ± 0.075
Sound Speed [km/s]
28.76 ± 1.14
31.97 ± 3.01
Alfven Speed [km/s]
58.13 ± 1.91
93.02 ± 2.42

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.663 ± 0.050 0.687 ± 0.049 -0.297 ± 0.288 -17.26 ± 2.96 133.95 ± 4.09
VC -0.898 ± 0.036 -0.070 ± 0.017 0.435 ± 0.405 25.78 ± 4.71 184.44 ± 1.05
MX1 -0.892 ± 0.047 0.205 ± 0.118 0.403 ± 0.380 23.78 ± 5.54 167.05 ± 7.58
MX2 -0.855 ± 0.024 0.090 ± 0.068 0.510 ± 0.460 30.68 ± 2.55 174.03 ± 4.57
MX3 -0.836 ± 0.018 0.045 ± 0.048 0.547 ± 0.484 33.14 ± 1.83 176.89 ± 3.27
RH08 -0.761 ± 0.022 0.087 ± 0.027 0.642 ± 0.535 39.98 ± 2.00 173.48 ± 2.00
RH09 -0.735 ± 0.042 0.058 ± 0.061 0.676 ± 0.547 42.53 ± 3.56 175.49 ± 4.75
RH10 -0.735 ± 0.043 0.058 ± 0.063 0.676 ± 0.547 42.53 ± 3.60 175.49 ± 4.87
Average -0.797 0.145 0.449 27.644 170.103
Median -0.761 0.087 0.547 33.137 175.487
Deviation 0.085 0.232 0.319 19.528 15.365

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 31.2 ± 3.2 238.3 ± 5.3 2.06 ± 0.14
VC 74.6 ± 1.9 410.2 ± 8.1 2.06 ± 0.14
MX1 58.8 ± 2.0 397.6 ± 7.8 2.06 ± 0.14
MX2 66.2 ± 2.2 393.7 ± 8.1 2.06 ± 0.14
MX3 69.0 ± 2.3 389.8 ± 8.2 2.06 ± 0.14
RH08 67.9 ± 2.7 363.9 ± 8.3 2.06 ± 0.14
RH09 70.0 ± 2.8 355.7 ± 8.4 2.06 ± 0.14
RH10 70.0 ± 2.8 355.7 ± 8.4 2.06 ± 0.14
Average 63.5 363.1 2.06
Median 69.0 389.8 2.06
Deviation 13.8 54.4 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 60.1 ± 2.7 23.7 ± 0.8 49.7 ± 1.6 60.4 ± 1.6 2.54 ± 0.12 1.00 ± 0.06
VC 143.0 ± 0.7 6.9 ± 0.2 15.4 ± 0.5 64.5 ± 1.2 20.83 ± 0.45 2.22 ± 0.05
MX1 137.3 ± 0.8 13.7 ± 0.4 30.1 ± 1.0 63.4 ± 1.3 10.06 ± 0.22 2.17 ± 0.06
MX2 141.0 ± 0.8 10.5 ± 0.3 23.5 ± 0.8 64.0 ± 1.3 13.39 ± 0.28 2.20 ± 0.05
MX3 141.5 ± 0.8 9.3 ± 0.2 20.8 ± 0.7 64.2 ± 1.3 15.21 ± 0.32 2.21 ± 0.05
RH8 137.2 ± 1.2 9.8 ± 0.3 21.9 ± 0.7 64.1 ± 1.3 14.00 ± 0.31 2.14 ± 0.05
RH9 135.9 ± 1.3 8.9 ± 0.2 19.9 ± 0.7 64.3 ± 1.3 15.31 ± 0.34 2.12 ± 0.05
RH10 135.9 ± 1.3 8.9 ± 0.2 19.9 ± 0.7 64.3 ± 1.3 15.31 ± 0.34 2.12 ± 0.05
Average 129.0 11.5 25.1 63.7 13.3 2.0
Median 137.3 9.8 21.9 64.2 15.2 2.2
Deviation 28.0 5.3 10.8 1.4 5.3 0.4

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 29.2 ± 2.2 26.9 ± 2.5 79.6 ± 2.1 94.6 ± 2.6 1.09 ± 0.10 0.31 ± 0.02
VC 69.1 ± 1.5 8.0 ± 0.7 24.7 ± 0.6 98.1 ± 3.0 8.64 ± 0.70 0.70 ± 0.03
MX1 66.2 ± 1.2 15.9 ± 1.4 48.2 ± 1.3 97.1 ± 2.9 4.20 ± 0.35 0.68 ± 0.02
MX2 68.2 ± 1.4 12.3 ± 1.1 37.5 ± 1.0 97.6 ± 3.0 5.58 ± 0.47 0.70 ± 0.03
MX3 68.7 ± 1.4 10.9 ± 0.9 33.3 ± 0.9 97.8 ± 3.0 6.35 ± 0.54 0.70 ± 0.03
RH8 66.4 ± 1.7 11.4 ± 1.0 35.0 ± 0.9 97.7 ± 3.0 5.84 ± 0.52 0.68 ± 0.03
RH9 65.7 ± 1.8 10.4 ± 0.9 31.8 ± 0.8 97.8 ± 3.0 6.37 ± 0.57 0.67 ± 0.03
RH10 65.7 ± 1.8 10.4 ± 0.9 31.8 ± 0.8 97.8 ± 3.0 6.37 ± 0.57 0.67 ± 0.03
Average 62.4 13.3 40.2 97.3 5.6 0.6
Median 66.4 11.4 35.0 97.8 6.4 0.7
Deviation 13.5 5.9 17.2 1.1 2.2 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 Mon Apr 13 08:55:21 2009
Michael L Stevens (mstevens@cfa.harvard.edu)

   
 

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