CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Wind Shock Analysis
Event ID: 20020491905
Observation time: 02/18/2002 49.79582 1905 [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 2002
Fractional day of year 49.795816
Arrival time of shock [seconds of day] 68758.5 ± 20.0
Shock type SF
Electron data availability 0
X GSE location of spacecraft [Re] -9.425
Y GSE location of spacecraft [Re] -285.095
Z GSE location of spacecraft [Re] 10.000
Upstream plasma points selected for analysis 0008
Upstream field points selected for analysis 0254
Downstream plasma points selected for analysis 0009
Downstream field points selected for analysis 0298
Minimum chisq/dof for RH8,RH9,RH10 6.79, 9.64, 10.22
Event added to database
Mon Feb 14 11:18:01 2005
Event last processed
Mon Mar 30 22:41:14 2009
Method selected
MX3
Propagation delay to Earth [minutes]
36.034 ± 11.355

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -364.5 ± 1.8 -375.1 ± 1.6
Vy GSE [km/s] 13.9 ± 2.4 19.7 ± 3.6
Vz GSE [km/s] -24.5 ± 1.8 -31.7 ± 2.0
Wi [km/s] 20.1 ± 0.8 26.7 ± 1.1
We [km/s] 635.5 ± 24.5 843.7 ± 36.0
Ni [n/cc] 6.2 ± 0.5 19.6 ± 1.4
Bx GSE [nT] -6.8 ± 0.2 -3.9 ± 0.4
By GSE [nT] -4.3 ± 0.2 1.8 ± 1.6
Bz GSE [nT] -6.3 ± 0.3 -6.0 ± 0.5
Plasma Beta
0.050 ± 0.049
0.518 ± 0.548
Sound Speed [km/s]
25.94 ± 1.00
34.44 ± 1.47
Alfven Speed [km/s]
90.03 ± 4.23
37.37 ± 2.32

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.504 ± 0.090 0.270 ± 0.081 -0.821 ± 0.550 -55.14 ± 6.51 151.76 ± 7.80
VC -0.781 ± 0.145 0.382 ± 0.251 -0.494 ± 0.449 -29.62 ± 10.20 153.92 ± 18.21
MX1 -0.801 ± 0.155 0.401 ± 0.118 -0.444 ± 0.412 -26.37 ± 21.32 153.38 ± 6.54
MX2 -0.743 ± 0.465 0.405 ± 0.495 -0.533 ± 0.476 -32.23 ± 48.47 151.42 ± 34.36
MX3 -0.754 ± 0.102 0.385 ± 0.102 -0.532 ± 0.475 -32.14 ± 10.97 152.99 ± 6.89
RH08 -0.740 ± 0.016 0.308 ± 0.010 0.598 ± 0.514 36.71 ± 1.69 157.44 ± 0.52
RH09 -0.699 ± 0.048 0.290 ± 0.054 0.654 ± 0.539 40.82 ± 4.15 157.44 ± 4.13
RH10 -0.713 ± 0.049 0.282 ± 0.059 0.642 ± 0.535 39.98 ± 4.15 158.44 ± 4.58
Average -0.717 0.340 -0.116 -7.249 154.597
Median -0.740 0.382 -0.444 -26.367 153.918
Deviation 0.092 0.058 0.629 39.417 2.767

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 43.5 ± 1.2 225.7 ± 2.9 3.24 ± 0.36
VC 48.6 ± 1.2 322.1 ± 3.0 3.24 ± 0.36
MX1 50.5 ± 1.2 328.7 ± 3.1 3.24 ± 0.36
MX2 49.4 ± 1.1 309.6 ± 3.1 3.24 ± 0.36
MX3 48.2 ± 1.1 313.4 ± 3.0 3.24 ± 0.36
RH08 89.7 ± 1.7 268.0 ± 2.8 3.24 ± 0.36
RH09 86.5 ± 1.7 249.7 ± 2.8 3.24 ± 0.36
RH10 87.7 ± 1.7 255.2 ± 2.8 3.24 ± 0.36
Average 63.0 284.0 3.24
Median 50.5 309.6 3.24
Deviation 20.8 39.0 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 18.2 ± 2.0 18.4 ± 0.6 65.3 ± 3.1 91.9 ± 4.0 0.99 ± 0.13 0.20 ± 0.02
VC 20.1 ± 2.2 16.8 ± 0.6 59.6 ± 2.8 92.2 ± 4.0 1.20 ± 0.15 0.22 ± 0.02
MX1 20.2 ± 2.3 16.1 ± 0.6 57.3 ± 2.7 92.3 ± 4.0 1.26 ± 0.15 0.22 ± 0.02
MX2 20.1 ± 2.2 16.5 ± 0.6 58.6 ± 2.8 92.2 ± 4.0 1.22 ± 0.15 0.22 ± 0.02
MX3 20.1 ± 2.2 16.9 ± 0.6 60.0 ± 2.8 92.2 ± 4.0 1.19 ± 0.15 0.22 ± 0.02
RH8 8.6 ± 2.3 0.2 ± 0.0 0.5 ± 0.0 93.7 ± 3.8 56.07 ± 13.71 0.09 ± 0.03
RH9 6.9 ± 2.2 1.5 ± 0.0 5.5 ± 0.3 93.7 ± 3.8 4.56 ± 1.37 0.07 ± 0.03
RH10 7.3 ± 2.2 1.0 ± 0.0 3.7 ± 0.2 93.7 ± 3.8 7.08 ± 2.02 0.08 ± 0.03
Average 15.2 10.9 38.8 92.7 9.2 0.2
Median 20.1 16.5 58.6 92.3 1.3 0.2
Deviation 6.3 8.3 29.6 0.8 19.1 0.1

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 5.4 ± 2.3 19.9 ± 0.5 27.1 ± 1.7 46.8 ± 1.4 0.27 ± 0.11 0.12 ± 0.05
VC 6.0 ± 2.3 17.8 ± 0.4 24.7 ± 1.5 47.6 ± 1.4 0.34 ± 0.13 0.13 ± 0.05
MX1 6.2 ± 2.3 17.0 ± 0.4 23.8 ± 1.5 47.9 ± 1.5 0.36 ± 0.13 0.13 ± 0.05
MX2 6.1 ± 2.4 17.5 ± 0.4 24.3 ± 1.5 47.8 ± 1.4 0.35 ± 0.13 0.13 ± 0.05
MX3 6.0 ± 2.4 18.0 ± 0.4 24.9 ± 1.5 47.6 ± 1.4 0.33 ± 0.13 0.13 ± 0.05
RH8 3.2 ± 1.8 0.2 ± 0.0 0.2 ± 0.0 50.9 ± 1.5 20.50 ± 11.57 0.06 ± 0.03
RH9 2.5 ± 1.8 1.5 ± 0.0 2.3 ± 0.1 50.8 ± 1.5 1.62 ± 1.15 0.05 ± 0.03
RH10 2.6 ± 1.8 1.0 ± 0.0 1.5 ± 0.1 50.9 ± 1.5 2.54 ± 1.70 0.05 ± 0.03
Average 4.8 11.6 16.1 48.8 3.3 0.1
Median 6.0 17.5 24.3 47.9 0.4 0.1
Deviation 1.7 8.9 12.3 1.7 7.0 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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