CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Wind Shock Analysis
Event ID: 20012391938
Observation time: 08/27/2001 239.81835 1938 [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 239.818351
Arrival time of shock [seconds of day] 70705.5 ± 3.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 42.550
Y GSE location of spacecraft [Re] 306.839
Z GSE location of spacecraft [Re] 18.420
Upstream plasma points selected for analysis 0007
Upstream field points selected for analysis 0216
Downstream plasma points selected for analysis 0007
Downstream field points selected for analysis 0230
Minimum chisq/dof for RH8,RH9,RH10 8.20, 20.86, 22.00
Event added to database
Mon Feb 14 11:14:56 2005
Event last processed
Mon Mar 30 21:27:55 2009
Method selected
RH08
Propagation delay to Earth [minutes]
7.417 ± 2.107

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -431.0 ± 1.9 -555.5 ± 8.0
Vy GSE [km/s] 5.9 ± 8.8 -59.9 ± 7.7
Vz GSE [km/s] -19.4 ± 4.6 54.9 ± 7.9
Wi [km/s] 45.5 ± 2.4 77.5 ± 3.4
We [km/s] 1440.1 ± 74.7 2451.0 ± 107.4
Ni [n/cc] 4.8 ± 0.3 13.3 ± 0.5
Bx GSE [nT] 6.2 ± 0.3 8.7 ± 1.2
By GSE [nT] -2.9 ± 0.9 -15.6 ± 1.2
Bz GSE [nT] 0.6 ± 0.6 1.3 ± 1.4
Plasma Beta
0.433 ± 0.421
0.525 ± 0.484
Sound Speed [km/s]
58.79 ± 3.05
100.06 ± 4.39
Alfven Speed [km/s]
69.52 ± 3.19
107.76 ± 5.32

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.982 ± 0.020 -0.188 ± 0.099 -0.033 ± 0.033 -1.87 ± 9.73 190.84 ± 5.80
VC -0.782 ± 0.042 -0.413 ± 0.060 0.467 ± 0.430 27.83 ± 3.96 207.81 ± 4.28
MX1 -0.935 ± 0.044 -0.159 ± 0.065 0.318 ± 0.307 18.54 ± 7.76 189.66 ± 3.96
MX2 -0.888 ± 0.026 -0.151 ± 0.051 0.434 ± 0.404 25.70 ± 3.30 189.65 ± 3.30
MX3 -0.867 ± 0.024 -0.147 ± 0.047 0.476 ± 0.436 28.41 ± 2.75 189.62 ± 3.09
RH08 -0.902 ± 0.006 -0.039 ± 0.008 0.430 ± 0.401 25.48 ± 0.79 182.51 ± 0.54
RH09 -0.931 ± 0.026 0.041 ± 0.065 0.363 ± 0.346 21.29 ± 4.10 177.49 ± 4.03
RH10 -0.926 ± 0.027 0.041 ± 0.067 0.374 ± 0.356 21.98 ± 4.06 177.49 ± 4.15
Average -0.902 -0.127 0.354 20.920 188.134
Median -0.902 -0.147 0.430 25.478 189.653
Deviation 0.059 0.147 0.165 9.812 9.705

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 36.5 ± 7.1 630.5 ± 13.0 2.77 ± 0.16
VC 61.0 ± 4.1 574.5 ± 9.3 2.77 ± 0.16
MX1 42.2 ± 3.9 632.0 ± 9.9 2.77 ± 0.16
MX2 46.2 ± 3.3 612.9 ± 8.9 2.77 ± 0.16
MX3 47.9 ± 3.1 603.0 ± 8.5 2.77 ± 0.16
RH08 41.4 ± 2.9 609.8 ± 8.8 2.77 ± 0.16
RH09 35.3 ± 2.9 614.4 ± 9.3 2.77 ± 0.16
RH10 35.8 ± 2.9 612.7 ± 9.2 2.77 ± 0.16
Average 43.3 611.2 2.77
Median 42.2 612.9 2.77
Deviation 8.6 17.9 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 207.9 ± 3.0 40.2 ± 1.3 55.9 ± 2.6 81.8 ± 2.7 5.18 ± 0.19 2.55 ± 0.10
VC 248.9 ± 3.1 22.4 ± 0.7 33.7 ± 1.5 88.3 ± 2.9 11.12 ± 0.45 2.82 ± 0.12
MX1 236.3 ± 1.9 36.1 ± 1.2 51.5 ± 2.4 83.6 ± 2.8 6.54 ± 0.22 2.83 ± 0.10
MX2 239.3 ± 1.7 33.3 ± 1.1 48.1 ± 2.2 84.8 ± 2.8 7.19 ± 0.24 2.83 ± 0.10
MX3 239.4 ± 1.7 32.1 ± 1.0 46.6 ± 2.1 85.2 ± 2.8 7.46 ± 0.25 2.81 ± 0.09
RH8 229.7 ± 1.7 36.8 ± 1.2 52.2 ± 2.4 83.3 ± 2.8 6.25 ± 0.20 2.76 ± 0.08
RH9 220.1 ± 1.9 40.9 ± 1.4 56.7 ± 2.6 81.4 ± 2.7 5.38 ± 0.16 2.71 ± 0.08
RH10 220.5 ± 1.9 40.6 ± 1.3 56.4 ± 2.6 81.5 ± 2.7 5.43 ± 0.16 2.71 ± 0.08
Average 230.3 35.3 50.1 83.8 6.8 2.8
Median 236.3 36.8 52.2 83.6 6.5 2.8
Deviation 13.3 6.2 7.6 2.3 1.9 0.1

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 75.8 ± 7.8 65.8 ± 1.2 86.7 ± 4.3 131.7 ± 2.1 1.15 ± 0.12 0.58 ± 0.06
VC 89.6 ± 3.3 36.6 ± 0.7 52.2 ± 2.6 142.6 ± 2.3 2.45 ± 0.11 0.63 ± 0.03
MX1 85.8 ± 5.7 59.1 ± 1.1 79.8 ± 3.9 134.8 ± 2.2 1.45 ± 0.10 0.64 ± 0.04
MX2 86.5 ± 4.9 54.5 ± 1.0 74.5 ± 3.7 136.7 ± 2.2 1.59 ± 0.10 0.63 ± 0.04
MX3 86.3 ± 4.7 52.5 ± 1.0 72.3 ± 3.6 137.5 ± 2.2 1.64 ± 0.10 0.63 ± 0.04
RH8 82.8 ± 5.5 60.2 ± 1.1 80.9 ± 4.0 134.3 ± 2.2 1.38 ± 0.10 0.62 ± 0.04
RH9 79.9 ± 6.2 67.0 ± 1.3 87.9 ± 4.3 131.0 ± 2.1 1.19 ± 0.10 0.61 ± 0.05
RH10 79.9 ± 6.2 66.5 ± 1.3 87.4 ± 4.3 131.3 ± 2.1 1.20 ± 0.10 0.61 ± 0.05
Average 83.3 57.8 77.7 135.0 1.5 0.6
Median 85.8 60.2 80.9 134.8 1.5 0.6
Deviation 4.6 10.1 11.8 3.9 0.4 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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