CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Wind Shock Analysis
Event ID: 20012941640
Observation time: 10/21/2001 294.69495 1640 [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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Simple methods
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Individual equations
Shock speed
Theta Bn
Mach numbers


General Information (About, Top)

Year 2001
Fractional day of year 294.694948
Arrival time of shock [seconds of day] 60043.5 ± 6.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 43.246
Y GSE location of spacecraft [Re] -9.266
Z GSE location of spacecraft [Re] 3.473
Upstream plasma points selected for analysis 0009
Upstream field points selected for analysis 0286
Downstream plasma points selected for analysis 0009
Downstream field points selected for analysis 0315
Minimum chisq/dof for RH8,RH9,RH10 2.92, 6.12, 6.35
Event added to database
Mon Feb 14 11:15:59 2005
Event last processed
Mon Mar 30 21:52:29 2009
Method selected
RH08
Propagation delay to Earth [minutes]
7.024 ± 0.357

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -369.7 ± 7.3 -557.2 ± 10.7
Vy GSE [km/s] 14.4 ± 15.5 -18.3 ± 25.0
Vz GSE [km/s] 30.0 ± 14.9 -24.9 ± 31.2
Wi [km/s] 49.8 ± 11.1 116.1 ± 12.7
We [km/s] 1574.3 ± 351.5 3671.0 ± 401.1
Ni [n/cc] 7.7 ± 2.5 28.9 ± 3.5
Bx GSE [nT] -2.0 ± 1.1 -3.0 ± 2.1
By GSE [nT] -0.6 ± 3.4 10.0 ± 10.6
Bz GSE [nT] -5.8 ± 0.6 -6.3 ± 15.5
Plasma Beta
1.005 ± 1.037
1.959 ± 1.565
Sound Speed [km/s]
64.27 ± 14.35
149.87 ± 16.37
Alfven Speed [km/s]
58.45 ± 15.18
87.42 ± 13.49

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.840 ± 0.227 -0.040 ± 0.756 -0.541 ± 0.481 -32.75 ± 23.80 182.70 ± 51.56
VC -0.949 ± 0.049 -0.169 ± 0.142 -0.267 ± 0.260 -15.49 ± 9.07 190.07 ± 8.54
MX1 -0.995 ± 0.044 -0.101 ± 0.426 0.020 ± 0.020 1.15 ± 22.01 185.79 ± 24.56
MX2 -0.989 ± 0.020 -0.037 ± 0.149 -0.144 ± 0.143 -8.29 ± 7.60 182.15 ± 8.66
MX3 -0.990 ± 0.016 -0.058 ± 0.140 -0.129 ± 0.128 -7.39 ± 6.14 183.34 ± 8.13
RH08 -0.987 ± 0.003 -0.061 ± 0.018 -0.151 ± 0.150 -8.68 ± 1.00 183.51 ± 1.02
RH09 -0.988 ± 0.011 -0.043 ± 0.070 -0.151 ± 0.150 -8.68 ± 4.02 182.51 ± 4.07
RH10 -0.988 ± 0.011 -0.043 ± 0.070 -0.151 ± 0.150 -8.68 ± 4.02 182.51 ± 4.07
Average -0.966 -0.069 -0.189 -11.099 184.072
Median -0.988 -0.043 -0.151 -8.675 183.335
Deviation 0.053 0.045 0.162 9.836 2.680

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 46.2 ± 7.7 561.6 ± 30.7 4.31 ± 1.88
VC 59.5 ± 3.9 624.5 ± 30.9 4.31 ± 1.88
MX1 73.9 ± 5.4 629.5 ± 31.2 4.31 ± 1.88
MX2 66.1 ± 7.3 636.5 ± 30.2 4.31 ± 1.88
MX3 66.8 ± 6.7 637.4 ± 30.4 4.31 ± 1.88
RH08 65.7 ± 6.6 636.4 ± 30.3 4.31 ± 1.88
RH09 65.8 ± 7.1 636.0 ± 30.2 4.31 ± 1.88
RH10 65.8 ± 7.1 636.0 ± 30.2 4.31 ± 1.88
Average 63.7 624.8 4.31
Median 65.8 636.0 4.31
Deviation 8.1 25.9 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 267.8 ± 13.3 29.4 ± 1.9 40.5 ± 10.5 84.0 ± 3.8 9.12 ± 0.57 3.19 ± 0.16
VC 284.2 ± 8.2 20.9 ± 1.3 29.7 ± 7.7 86.5 ± 3.8 13.61 ± 0.79 3.29 ± 0.13
MX1 262.7 ± 5.6 11.2 ± 0.7 16.2 ± 4.2 88.3 ± 3.8 23.55 ± 1.38 2.98 ± 0.11
MX2 275.8 ± 8.7 16.5 ± 1.0 23.7 ± 6.1 87.5 ± 3.8 16.73 ± 0.97 3.16 ± 0.12
MX3 276.1 ± 8.2 16.1 ± 1.0 23.0 ± 6.0 87.5 ± 3.8 17.22 ± 0.99 3.16 ± 0.12
RH8 277.0 ± 8.4 16.8 ± 1.0 24.1 ± 6.3 87.4 ± 3.8 16.51 ± 0.95 3.17 ± 0.12
RH9 276.1 ± 8.7 16.8 ± 1.0 24.0 ± 6.2 87.4 ± 3.8 16.51 ± 0.95 3.16 ± 0.12
RH10 276.1 ± 8.7 16.8 ± 1.0 24.0 ± 6.2 87.4 ± 3.8 16.51 ± 0.95 3.16 ± 0.12
Average 274.5 18.1 25.6 87.0 16.2 3.2
Median 276.1 16.8 24.0 87.4 16.5 3.2
Deviation 6.5 5.3 7.0 1.3 4.0 0.1

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 79.3 ± 16.4 54.6 ± 7.0 60.5 ± 9.3 165.2 ± 14.2 1.47 ± 0.30 0.48 ± 0.12
VC 86.1 ± 11.1 38.9 ± 4.8 44.4 ± 6.8 169.7 ± 14.1 2.23 ± 0.31 0.51 ± 0.08
MX1 73.9 ± 9.4 20.8 ± 2.5 24.2 ± 3.7 172.9 ± 14.1 3.57 ± 0.41 0.43 ± 0.06
MX2 81.3 ± 9.6 30.7 ± 3.7 35.4 ± 5.5 171.4 ± 14.1 2.66 ± 0.29 0.48 ± 0.06
MX3 81.5 ± 9.4 29.9 ± 3.6 34.5 ± 5.3 171.5 ± 14.1 2.74 ± 0.30 0.48 ± 0.06
RH8 81.7 ± 9.5 31.3 ± 3.8 36.0 ± 5.6 171.3 ± 14.1 2.63 ± 0.29 0.48 ± 0.06
RH9 81.2 ± 9.6 31.2 ± 3.8 35.9 ± 5.5 171.3 ± 14.1 2.62 ± 0.29 0.48 ± 0.06
RH10 81.2 ± 9.6 31.2 ± 3.8 35.9 ± 5.5 171.3 ± 14.1 2.62 ± 0.29 0.48 ± 0.06
Average 80.8 33.6 38.3 170.6 2.6 0.5
Median 81.3 31.2 35.9 171.3 2.6 0.5
Deviation 3.4 9.8 10.5 2.3 0.6 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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