CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Wind Shock Analysis
Event ID: 20021090825
Observation time: 04/19/2002 109.35092 0825 [UT]

Wind spacecraft

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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 2002
Fractional day of year 109.350920
Arrival time of shock [seconds of day] 30319.5 ± 3.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 8.330
Y GSE location of spacecraft [Re] 212.310
Z GSE location of spacecraft [Re] 9.280
Upstream plasma points selected for analysis 0009
Upstream field points selected for analysis 0307
Downstream plasma points selected for analysis 0008
Downstream field points selected for analysis 0371
Minimum chisq/dof for RH8,RH9,RH10 8.49, 20.72, 22.63
Event added to database
Sat Mar 12 23:06:32 2005
Event last processed
Mon Mar 30 23:42:10 2009
Method selected
RH08
Propagation delay to Earth [minutes]
4.141 ± 0.429

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -463.1 ± 13.2 -682.4 ± 21.8
Vy GSE [km/s] 39.6 ± 12.5 -7.1 ± 10.7
Vz GSE [km/s] -48.8 ± 13.0 -4.0 ± 18.4
Wi [km/s] 186.0 ± 6.9 258.2 ± 18.7
We [km/s] 5880.5 ± 218.8 8164.0 ± 592.1
Ni [n/cc] 1.3 ± 0.1 4.2 ± 0.5
Bx GSE [nT] -0.3 ± 0.6 2.4 ± 1.0
By GSE [nT] -8.9 ± 0.1 -19.9 ± 1.0
Bz GSE [nT] 2.6 ± 0.6 6.0 ± 2.2
Plasma Beta
1.085 ± 1.139
1.333 ± 1.382
Sound Speed [km/s]
240.07 ± 8.93
333.29 ± 24.17
Alfven Speed [km/s]
179.00 ± 5.99
226.33 ± 13.28

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.943 ± 0.158 -0.276 ± 0.364 0.184 ± 0.182 10.59 ± 38.09 196.30 ± 21.99
VC -0.959 ± 0.023 -0.204 ± 0.062 0.198 ± 0.195 11.40 ± 5.56 192.01 ± 3.70
MX1 -0.965 ± 0.024 -0.177 ± 0.085 0.192 ± 0.189 11.04 ± 5.48 190.39 ± 5.06
MX2 -0.965 ± 0.023 -0.176 ± 0.081 0.193 ± 0.190 11.12 ± 5.40 190.35 ± 4.79
MX3 -0.965 ± 0.023 -0.176 ± 0.078 0.194 ± 0.191 11.18 ± 5.41 190.32 ± 4.64
RH08 -0.985 ± 0.002 -0.113 ± 0.009 0.128 ± 0.128 7.38 ± 0.72 186.52 ± 0.54
RH09 -0.984 ± 0.013 -0.112 ± 0.070 0.140 ± 0.139 8.03 ± 4.01 186.52 ± 4.07
RH10 -0.984 ± 0.013 -0.112 ± 0.070 0.140 ± 0.139 8.03 ± 4.01 186.52 ± 4.07
Average -0.969 -0.168 0.171 9.848 189.865
Median -0.965 -0.176 0.192 11.041 190.349
Deviation 0.015 0.057 0.029 1.711 3.388

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 69.9 ± 3.5 753.4 ± 46.1 3.23 ± 0.41
VC 73.8 ± 3.4 764.3 ± 46.3 3.23 ± 0.41
MX1 75.4 ± 3.4 768.4 ± 46.4 3.23 ± 0.41
MX2 75.5 ± 3.4 768.3 ± 46.4 3.23 ± 0.41
MX3 75.5 ± 3.4 768.2 ± 46.4 3.23 ± 0.41
RH08 80.1 ± 3.5 778.8 ± 47.0 3.23 ± 0.41
RH09 79.9 ± 3.5 777.7 ± 46.9 3.23 ± 0.41
RH10 79.9 ± 3.5 777.7 ± 46.9 3.23 ± 0.41
Average 76.2 769.6 3.23
Median 75.5 768.4 3.23
Deviation 3.6 8.6 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 336.4 ± 15.2 49.9 ± 1.1 61.4 ± 2.1 295.4 ± 7.0 6.75 ± 0.40 1.14 ± 0.06
VC 338.1 ± 15.0 40.3 ± 0.9 49.9 ± 1.7 296.8 ± 7.0 8.39 ± 0.49 1.14 ± 0.06
MX1 337.7 ± 14.9 36.3 ± 0.8 45.0 ± 1.5 297.3 ± 7.0 9.31 ± 0.54 1.14 ± 0.06
MX2 337.7 ± 14.9 36.3 ± 0.8 44.9 ± 1.5 297.4 ± 7.0 9.32 ± 0.55 1.14 ± 0.06
MX3 337.7 ± 14.9 36.2 ± 0.8 44.9 ± 1.5 297.4 ± 7.0 9.33 ± 0.55 1.14 ± 0.06
RH8 333.3 ± 14.3 24.8 ± 0.5 30.9 ± 1.0 298.5 ± 7.0 13.44 ± 0.78 1.12 ± 0.06
RH9 333.4 ± 14.3 25.2 ± 0.5 31.4 ± 1.1 298.5 ± 7.0 13.22 ± 0.77 1.12 ± 0.06
RH10 333.4 ± 14.3 25.2 ± 0.5 31.4 ± 1.1 298.5 ± 7.0 13.22 ± 0.77 1.12 ± 0.06
Average 336.0 34.3 42.5 297.5 10.4 1.1
Median 337.7 36.3 44.9 297.4 9.3 1.1
Deviation 2.2 8.8 10.8 1.1 2.6 0.0

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 108.3 ± 20.3 64.8 ± 1.3 77.7 ± 4.6 398.3 ± 13.0 1.67 ± 0.31 0.27 ± 0.05
VC 109.4 ± 20.3 52.4 ± 1.1 63.1 ± 3.7 400.1 ± 12.9 2.09 ± 0.38 0.27 ± 0.05
MX1 109.1 ± 20.3 47.2 ± 1.0 56.9 ± 3.3 400.8 ± 12.9 2.31 ± 0.43 0.27 ± 0.05
MX2 109.2 ± 20.3 47.1 ± 1.0 56.8 ± 3.3 400.8 ± 12.9 2.32 ± 0.43 0.27 ± 0.05
MX3 109.2 ± 20.3 47.1 ± 1.0 56.8 ± 3.3 400.8 ± 12.9 2.32 ± 0.43 0.27 ± 0.05
RH8 106.2 ± 20.9 32.2 ± 0.7 39.0 ± 2.3 402.2 ± 12.8 3.29 ± 0.64 0.26 ± 0.05
RH9 106.2 ± 20.8 32.8 ± 0.7 39.7 ± 2.3 402.2 ± 12.8 3.24 ± 0.63 0.26 ± 0.05
RH10 106.2 ± 20.8 32.8 ± 0.7 39.7 ± 2.3 402.2 ± 12.8 3.24 ± 0.63 0.26 ± 0.05
Average 108.0 44.5 53.7 400.9 2.6 0.3
Median 109.1 47.1 56.8 400.8 2.3 0.3
Deviation 1.5 11.4 13.6 1.3 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 Fri Jun 13 11:06:02 2014
Michael L Stevens (mstevens@cfa.harvard.edu)

   
 

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