CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Wind Shock Analysis
Event ID: 19992940220
Observation time: 10/21/1999 294.09783 0220 [UT]

Wind spacecraft

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Asymptotic parameters
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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 1999
Fractional day of year 294.097830
Arrival time of shock [seconds of day] 8452.5 ± 3.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 21.976
Y GSE location of spacecraft [Re] -65.390
Z GSE location of spacecraft [Re] 2.039
Upstream plasma points selected for analysis 0010
Upstream field points selected for analysis 0311
Downstream plasma points selected for analysis 0011
Downstream field points selected for analysis 0336
Minimum chisq/dof for RH8,RH9,RH10 4.84, 7.03, 7.13
Event added to database
Mon Feb 14 11:08:55 2005
Event last processed
Mon Mar 30 19:06:30 2009
Method selected
RH08
Propagation delay to Earth [minutes]
4.795 ± 0.399

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -348.1 ± 1.1 -427.3 ± 5.8
Vy GSE [km/s] -26.5 ± 2.6 -35.0 ± 6.5
Vz GSE [km/s] 2.2 ± 4.1 25.6 ± 11.4
Wi [km/s] 22.3 ± 0.7 37.7 ± 3.2
We [km/s] 706.0 ± 23.4 1192.0 ± 101.3
Ni [n/cc] 13.4 ± 0.4 31.6 ± 5.4
Bx GSE [nT] -2.8 ± 0.4 -1.3 ± 3.0
By GSE [nT] 8.5 ± 0.2 22.8 ± 1.7
Bz GSE [nT] 2.0 ± 1.4 9.9 ± 4.0
Plasma Beta
0.165 ± 0.163
0.151 ± 0.161
Sound Speed [km/s]
28.82 ± 0.96
48.66 ± 4.13
Alfven Speed [km/s]
55.13 ± 1.51
99.66 ± 10.32

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.890 ± 0.192 0.399 ± 0.357 -0.223 ± 0.219 -12.88 ± 30.70 155.87 ± 22.76
VC -0.954 ± 0.041 -0.107 ± 0.089 0.279 ± 0.272 16.22 ± 8.25 186.38 ± 5.31
MX1 -0.956 ± 0.044 -0.022 ± 0.157 0.292 ± 0.284 16.99 ± 8.52 181.34 ± 9.43
MX2 -0.951 ± 0.045 -0.033 ± 0.143 0.307 ± 0.297 17.90 ± 8.42 181.99 ± 8.63
MX3 -0.949 ± 0.047 -0.038 ± 0.138 0.314 ± 0.303 18.27 ± 8.52 182.26 ± 8.31
RH08 -0.981 ± 0.003 0.009 ± 0.009 0.196 ± 0.193 11.28 ± 0.85 179.50 ± 0.54
RH09 -0.981 ± 0.014 0.009 ± 0.071 0.196 ± 0.193 11.28 ± 3.96 179.50 ± 4.16
RH10 -0.981 ± 0.014 0.009 ± 0.071 0.196 ± 0.193 11.28 ± 3.96 179.50 ± 4.16
Average -0.955 0.028 0.195 11.292 178.293
Median -0.954 0.009 0.279 16.225 181.340
Deviation 0.030 0.155 0.176 10.235 9.345

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 53.8 ± 2.6 405.7 ± 30.1 2.34 ± 0.43
VC 75.1 ± 4.0 476.0 ± 27.2 2.34 ± 0.43
MX1 70.3 ± 4.0 472.8 ± 27.7 2.34 ± 0.43
MX2 70.8 ± 4.1 472.3 ± 27.5 2.34 ± 0.43
MX3 71.0 ± 4.2 472.0 ± 27.5 2.34 ± 0.43
RH08 69.4 ± 3.3 477.3 ± 28.6 2.34 ± 0.43
RH09 69.4 ± 3.3 477.3 ± 28.6 2.34 ± 0.43
RH10 69.4 ± 3.3 477.3 ± 28.6 2.34 ± 0.43
Average 68.6 466.3 2.34
Median 70.3 476.0 2.34
Deviation 6.3 24.6 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 107.1 ± 2.3 15.6 ± 0.4 32.6 ± 0.9 60.2 ± 1.4 6.88 ± 0.28 1.78 ± 0.07
VC 140.4 ± 1.2 6.6 ± 0.2 14.1 ± 0.4 61.9 ± 1.4 21.34 ± 0.57 2.27 ± 0.06
MX1 138.7 ± 1.3 8.7 ± 0.2 18.6 ± 0.5 61.6 ± 1.4 15.97 ± 0.45 2.25 ± 0.06
MX2 139.7 ± 1.3 8.5 ± 0.2 18.1 ± 0.5 61.6 ± 1.4 16.48 ± 0.46 2.27 ± 0.06
MX3 140.0 ± 1.3 8.4 ± 0.2 18.0 ± 0.5 61.6 ± 1.4 16.70 ± 0.47 2.27 ± 0.06
RH8 135.8 ± 1.1 9.1 ± 0.2 19.4 ± 0.5 61.6 ± 1.4 14.96 ± 0.43 2.21 ± 0.06
RH9 135.8 ± 1.1 9.1 ± 0.2 19.4 ± 0.5 61.6 ± 1.4 14.96 ± 0.43 2.21 ± 0.06
RH10 135.8 ± 1.1 9.1 ± 0.2 19.4 ± 0.5 61.6 ± 1.4 14.96 ± 0.43 2.21 ± 0.06
Average 134.1 9.4 19.9 61.5 15.3 2.2
Median 138.7 9.1 19.4 61.6 16.0 2.3
Deviation 11.1 2.6 5.4 0.5 4.0 0.2

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 45.2 ± 9.0 26.5 ± 1.6 58.9 ± 6.1 107.9 ± 8.4 1.71 ± 0.31 0.42 ± 0.09
VC 57.4 ± 4.5 11.2 ± 0.6 25.6 ± 2.6 110.6 ± 8.0 5.15 ± 0.56 0.52 ± 0.05
MX1 56.0 ± 4.8 14.8 ± 0.9 33.6 ± 3.5 110.2 ± 8.1 3.80 ± 0.43 0.51 ± 0.06
MX2 56.9 ± 4.8 14.4 ± 0.8 32.8 ± 3.4 110.2 ± 8.1 3.96 ± 0.45 0.52 ± 0.06
MX3 57.3 ± 4.8 14.3 ± 0.8 32.5 ± 3.4 110.2 ± 8.0 4.03 ± 0.46 0.52 ± 0.06
RH8 53.6 ± 5.1 15.4 ± 0.9 35.1 ± 3.6 110.1 ± 8.1 3.48 ± 0.39 0.49 ± 0.06
RH9 53.6 ± 5.1 15.4 ± 0.9 35.1 ± 3.6 110.1 ± 8.1 3.48 ± 0.39 0.49 ± 0.06
RH10 53.6 ± 5.1 15.4 ± 0.9 35.1 ± 3.6 110.1 ± 8.1 3.48 ± 0.39 0.49 ± 0.06
Average 54.2 15.9 36.1 109.9 3.6 0.5
Median 56.0 15.4 35.1 110.2 3.8 0.5
Deviation 4.0 4.5 9.7 0.8 1.0 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 Fri Jun 13 11:06:02 2014
Michael L Stevens (mstevens@cfa.harvard.edu)

   
 

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