CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Wind Shock Analysis
Event ID: 20011380940
Observation time: 05/18/2001 138.40314 0940 [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
Rankine
Individual equations
Shock speed
Theta Bn
Mach numbers


General Information (About, Top)

Year 2001
Fractional day of year 138.403142
Arrival time of shock [seconds of day] 34831.5 ± 5.0
Shock type SF
Electron data availability 0
X GSE location of spacecraft [Re] 43.241
Y GSE location of spacecraft [Re] -173.502
Z GSE location of spacecraft [Re] -9.490
Upstream plasma points selected for analysis 0007
Upstream field points selected for analysis 0214
Downstream plasma points selected for analysis 0005
Downstream field points selected for analysis 0162
Minimum chisq/dof for RH8,RH9,RH10 11.56, 12.76, 13.46
Event added to database
Mon Feb 14 11:13:55 2005
Event last processed
Mon Mar 30 21:02:49 2009
Method selected
RH08
Propagation delay to Earth [minutes]
-3.666 ± 0.469

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -432.7 ± 3.5 -470.3 ± 2.6
Vy GSE [km/s] -21.4 ± 4.4 9.1 ± 0.7
Vz GSE [km/s] -8.2 ± 4.0 20.3 ± 1.1
Wi [km/s] 34.4 ± 5.2 46.2 ± 1.4
We [km/s] 1087.2 ± 165.7 1460.7 ± 45.3
Ni [n/cc] 4.1 ± 0.8 9.1 ± 0.5
Bx GSE [nT] -3.2 ± 0.3 -1.9 ± 0.5
By GSE [nT] 4.5 ± 0.3 0.7 ± 0.1
Bz GSE [nT] 3.3 ± 0.2 0.8 ± 0.4
Plasma Beta
0.253 ± 0.271
10.467 ± 9.266
Sound Speed [km/s]
44.39 ± 6.76
59.63 ± 1.85
Alfven Speed [km/s]
70.63 ± 6.54
15.66 ± 4.64

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.951 ± 0.022 -0.308 ± 0.067 -0.009 ± 0.009 -0.53 ± 11.64 197.97 ± 4.02
VC -0.672 ± 0.027 0.541 ± 0.031 0.506 ± 0.457 30.37 ± 2.03 141.13 ± 2.48
MX1 -0.904 ± 0.058 -0.402 ± 0.122 0.143 ± 0.142 8.23 ± 8.82 203.98 ± 7.70
MX2 -0.963 ± 0.039 -0.261 ± 0.120 -0.075 ± 0.075 -4.32 ± 16.50 195.15 ± 7.11
MX3 -0.928 ± 0.033 -0.364 ± 0.080 0.079 ± 0.079 4.52 ± 8.15 201.39 ± 4.95
RH08 -0.928 ± 0.004 -0.311 ± 0.009 -0.207 ± 0.204 -11.93 ± 0.73 198.55 ± 0.54
RH09 -0.925 ± 0.014 -0.311 ± 0.034 -0.218 ± 0.214 -12.58 ± 2.47 198.55 ± 2.11
RH10 -0.925 ± 0.018 -0.311 ± 0.042 -0.218 ± 0.214 -12.58 ± 3.14 198.55 ± 2.62
Average -0.900 -0.216 0.000 0.147 191.909
Median -0.925 -0.311 -0.009 -0.527 198.552
Deviation 0.094 0.309 0.247 14.580 20.680

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 75.4 ± 1.5 466.5 ± 8.4 2.29 ± 0.57
VC 13.6 ± 1.8 376.7 ± 15.8 2.29 ± 0.57
MX1 76.0 ± 1.8 446.5 ± 8.2 2.29 ± 0.57
MX2 75.1 ± 1.4 470.9 ± 8.4 2.29 ± 0.57
MX3 75.6 ± 1.7 456.9 ± 8.3 2.29 ± 0.57
RH08 82.1 ± 1.3 445.6 ± 6.8 2.29 ± 0.57
RH09 82.5 ± 1.2 443.9 ± 6.7 2.29 ± 0.57
RH10 82.5 ± 1.2 443.9 ± 6.7 2.29 ± 0.57
Average 70.3 443.9 2.29
Median 76.0 446.5 2.29
Deviation 23.2 29.1 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 48.3 ± 2.2 9.4 ± 1.1 17.8 ± 1.7 83.2 ± 4.7 5.19 ± 0.88 0.58 ± 0.03
VC 101.8 ± 6.4 42.2 ± 6.2 68.7 ± 6.4 72.0 ± 6.0 2.49 ± 0.61 1.42 ± 0.10
MX1 47.8 ± 2.2 9.1 ± 1.0 17.1 ± 1.6 83.3 ± 4.7 5.36 ± 0.89 0.58 ± 0.03
MX2 48.2 ± 2.2 9.6 ± 1.1 18.2 ± 1.7 83.2 ± 4.7 5.09 ± 0.87 0.58 ± 0.04
MX3 48.2 ± 2.2 9.3 ± 1.1 17.5 ± 1.6 83.2 ± 4.7 5.28 ± 0.88 0.58 ± 0.03
RH8 35.9 ± 1.6 5.1 ± 0.6 9.7 ± 0.9 83.6 ± 4.7 7.15 ± 1.16 0.43 ± 0.03
RH9 35.2 ± 1.6 4.9 ± 0.6 9.2 ± 0.9 83.6 ± 4.7 7.35 ± 1.19 0.42 ± 0.03
RH10 35.2 ± 1.6 4.9 ± 0.6 9.2 ± 0.9 83.6 ± 4.7 7.35 ± 1.19 0.42 ± 0.03
Average 50.1 11.8 20.9 82.0 5.7 0.6
Median 48.2 9.3 17.5 83.3 5.4 0.6
Deviation 21.8 12.5 19.7 4.0 1.6 0.3

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 22.1 ± 2.3 3.8 ± 1.1 4.0 ± 1.2 61.6 ± 2.9 6.30 ± 2.53 0.36 ± 0.05
VC 45.7 ± 2.4 15.2 ± 4.5 15.2 ± 4.5 59.8 ± 1.9 3.26 ± 1.16 0.77 ± 0.06
MX1 21.9 ± 2.3 3.7 ± 1.0 3.8 ± 1.1 61.6 ± 2.9 6.51 ± 2.60 0.36 ± 0.05
MX2 22.1 ± 2.4 3.9 ± 1.1 4.0 ± 1.2 61.6 ± 2.9 6.18 ± 2.48 0.36 ± 0.05
MX3 22.1 ± 2.3 3.7 ± 1.0 3.9 ± 1.2 61.6 ± 2.9 6.42 ± 2.56 0.36 ± 0.05
RH8 16.3 ± 2.2 2.1 ± 0.6 2.1 ± 0.6 61.7 ± 3.0 8.64 ± 3.71 0.27 ± 0.05
RH9 16.0 ± 2.2 2.0 ± 0.5 2.0 ± 0.6 61.7 ± 3.0 8.88 ± 3.83 0.26 ± 0.05
RH10 16.0 ± 2.2 2.0 ± 0.5 2.0 ± 0.6 61.7 ± 3.0 8.88 ± 3.83 0.26 ± 0.05
Average 22.8 4.5 4.6 61.4 6.9 0.4
Median 22.1 3.7 3.9 61.6 6.5 0.4
Deviation 9.7 4.4 4.4 0.7 1.9 0.2

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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