CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Wind Shock Analysis
Event ID: 20012291101
Observation time: 08/17/2001 229.45950 1101 [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 229.459497
Arrival time of shock [seconds of day] 39700.5 ± 3.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 42.550
Y GSE location of spacecraft [Re] 294.392
Z GSE location of spacecraft [Re] 18.420
Upstream plasma points selected for analysis 0009
Upstream field points selected for analysis 0282
Downstream plasma points selected for analysis 0009
Downstream field points selected for analysis 0285
Minimum chisq/dof for RH8,RH9,RH10 5.60, 9.27, 9.60
Event added to database
Mon Feb 14 11:14:46 2005
Event last processed
Mon Mar 30 21:24:29 2009
Method selected
RH08
Propagation delay to Earth [minutes]
8.529 ± 0.920

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -350.7 ± 6.2 -474.2 ± 5.5
Vy GSE [km/s] -3.3 ± 6.0 -3.1 ± 5.7
Vz GSE [km/s] 1.8 ± 5.3 -35.0 ± 9.5
Wi [km/s] 21.6 ± 2.5 46.5 ± 3.7
We [km/s] 684.6 ± 78.7 1471.2 ± 117.9
Ni [n/cc] 4.3 ± 0.7 14.6 ± 1.1
Bx GSE [nT] -0.9 ± 1.1 -3.1 ± 1.0
By GSE [nT] 2.4 ± 1.5 13.1 ± 1.5
Bz GSE [nT] 4.0 ± 0.3 12.2 ± 1.6
Plasma Beta
0.174 ± 0.171
0.199 ± 0.200
Sound Speed [km/s]
27.95 ± 3.21
60.06 ± 4.81
Alfven Speed [km/s]
52.48 ± 4.47
104.65 ± 2.89

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.828 ± 0.323 -0.471 ± 0.497 0.306 ± 0.296 17.81 ± 35.76 209.63 ± 33.77
VC -0.958 ± 0.025 0.003 ± 0.060 -0.286 ± 0.278 -16.65 ± 5.01 179.82 ± 3.62
MX1 -0.969 ± 0.036 0.000 ± 0.064 -0.248 ± 0.243 -14.37 ± 8.31 180.00 ± 3.79
MX2 -0.962 ± 0.033 0.016 ± 0.068 -0.273 ± 0.266 -15.82 ± 6.90 179.02 ± 4.04
MX3 -0.960 ± 0.032 0.020 ± 0.070 -0.278 ± 0.271 -16.14 ± 6.65 178.78 ± 4.17
RH08 -0.983 ± 0.002 0.009 ± 0.013 -0.184 ± 0.182 -10.62 ± 0.49 179.50 ± 0.75
RH09 -0.985 ± 0.012 0.009 ± 0.070 -0.173 ± 0.171 -9.97 ± 4.03 179.50 ± 4.07
RH10 -0.987 ± 0.011 0.009 ± 0.070 -0.162 ± 0.161 -9.32 ± 4.03 179.50 ± 4.07
Average -0.954 -0.051 -0.162 -9.385 183.218
Median -0.962 0.009 -0.184 -10.624 179.499
Deviation 0.052 0.170 0.196 11.379 10.681

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 78.5 ± 19.4 419.7 ± 15.9 3.40 ± 0.47
VC 87.3 ± 11.1 515.8 ± 17.6 3.40 ± 0.47
MX1 89.2 ± 11.4 519.1 ± 17.6 3.40 ± 0.47
MX2 88.4 ± 11.0 517.1 ± 17.6 3.40 ± 0.47
MX3 88.2 ± 10.9 516.6 ± 17.6 3.40 ± 0.47
RH08 87.5 ± 11.8 523.9 ± 17.5 3.40 ± 0.47
RH09 86.9 ± 11.9 524.4 ± 17.5 3.40 ± 0.47
RH10 86.4 ± 12.0 524.7 ± 17.5 3.40 ± 0.47
Average 86.5 507.7 3.40
Median 87.5 519.1 3.40
Deviation 3.4 35.7 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 127.4 ± 8.1 4.9 ± 0.5 10.5 ± 0.9 59.3 ± 4.6 26.07 ± 3.33 2.16 ± 0.27
VC 180.3 ± 5.3 1.2 ± 0.1 2.5 ± 0.2 59.5 ± 4.6 157.83 ± 15.43 3.05 ± 0.26
MX1 179.8 ± 5.4 0.4 ± 0.0 0.8 ± 0.1 59.5 ± 4.6 498.28 ± 49.20 3.04 ± 0.27
MX2 180.2 ± 5.3 0.7 ± 0.1 1.5 ± 0.1 59.5 ± 4.6 259.07 ± 25.38 3.05 ± 0.26
MX3 180.3 ± 5.3 0.8 ± 0.1 1.6 ± 0.1 59.5 ± 4.6 235.19 ± 23.00 3.05 ± 0.26
RH8 179.5 ± 5.6 1.1 ± 0.1 2.3 ± 0.2 59.5 ± 4.6 166.81 ± 16.71 3.03 ± 0.27
RH9 179.3 ± 5.6 1.3 ± 0.1 2.8 ± 0.2 59.5 ± 4.6 136.94 ± 13.75 3.03 ± 0.27
RH10 178.9 ± 5.7 1.6 ± 0.1 3.3 ± 0.3 59.5 ± 4.6 115.96 ± 11.68 3.02 ± 0.27
Average 173.2 1.5 3.2 59.5 199.5 2.9
Median 179.8 1.2 2.5 59.5 166.8 3.0
Deviation 18.5 1.4 3.1 0.1 140.3 0.3

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 36.6 ± 8.6 10.4 ± 0.6 20.9 ± 0.6 120.3 ± 3.2 3.54 ± 0.92 0.31 ± 0.07
VC 51.5 ± 4.7 2.4 ± 0.1 4.9 ± 0.1 120.7 ± 3.2 21.18 ± 1.94 0.43 ± 0.04
MX1 51.1 ± 4.7 0.8 ± 0.0 1.5 ± 0.0 120.7 ± 3.2 66.56 ± 6.41 0.42 ± 0.04
MX2 51.5 ± 4.7 1.5 ± 0.1 3.0 ± 0.1 120.7 ± 3.2 34.77 ± 3.20 0.43 ± 0.04
MX3 51.6 ± 4.7 1.6 ± 0.1 3.3 ± 0.1 120.7 ± 3.2 31.59 ± 2.88 0.43 ± 0.04
RH8 51.4 ± 4.8 2.3 ± 0.1 4.6 ± 0.1 120.7 ± 3.2 22.46 ± 2.31 0.43 ± 0.04
RH9 51.4 ± 4.9 2.8 ± 0.2 5.6 ± 0.2 120.7 ± 3.2 18.45 ± 1.92 0.43 ± 0.04
RH10 51.1 ± 4.9 3.3 ± 0.2 6.6 ± 0.2 120.7 ± 3.2 15.58 ± 1.65 0.42 ± 0.04
Average 49.5 3.1 6.3 120.7 26.8 0.4
Median 51.4 2.4 4.9 120.7 22.5 0.4
Deviation 5.2 3.1 6.1 0.2 18.7 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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