CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Ace Shock Analysis
Event ID: 20020480209
Observation time: 02/17/2002 48.08993 0209 [UT]

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Asymptotic parameters
Shock front normals
Key parameters
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 48.089931
Arrival time of shock [seconds of day] 7770.0 ± 16.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 0.036
Y GSE location of spacecraft [Re] -0.006
Z GSE location of spacecraft [Re] 0.002
Upstream plasma points selected for analysis 0007
Upstream field points selected for analysis 0028
Downstream plasma points selected for analysis 0006
Downstream field points selected for analysis 0026
Minimum chisq/dof for RH8,RH9,RH10 9.31, 10.89, 11.57
Event added to database
Sun May 1 21:54:56 2005
Event last processed
Tue May 3 14:15:28 2005
Method selected
RH08
Propagation delay to Earth [minutes]
0.006 ± 0.003

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -363.5 ± 0.8 -391.3 ± 3.8
Vy GSE [km/s] 5.2 ± 1.4 -15.7 ± 3.9
Vz GSE [km/s] 2.2 ± 1.2 36.0 ± 1.3
Wi [km/s] 22.6 ± 0.8 29.2 ± 2.8
We [km/s] 713.3 ± 25.0 922.0 ± 88.8
Ni [n/cc] 10.2 ± 0.4 37.1 ± 2.7
Bx GSE [nT] 4.7 ± 0.1 6.7 ± 0.6
By GSE [nT] -0.7 ± 0.1 -5.4 ± 0.9
Bz GSE [nT] -0.0 ± 0.1 -1.2 ± 1.1
Plasma Beta
0.495 ± 0.488
0.880 ± 0.976
Sound Speed [km/s]
29.12 ± 1.02
37.64 ± 3.63
Alfven Speed [km/s]
32.08 ± 0.45
31.54 ± 2.19

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.924 ± 0.068 -0.375 ± 0.166 -0.079 ± 0.079 -4.54 ± 5.83 202.07 ± 10.27
VC -0.575 ± 0.064 -0.433 ± 0.082 0.694 ± 0.552 43.94 ± 2.31 216.98 ± 7.96
MX1 -0.594 ± 0.060 -0.420 ± 0.072 0.686 ± 0.550 43.30 ± 3.81 215.28 ± 6.48
MX2 -0.577 ± 0.044 -0.419 ± 0.054 0.701 ± 0.554 44.51 ± 2.29 215.98 ± 5.08
MX3 -0.570 ± 0.049 -0.421 ± 0.054 0.706 ± 0.555 44.91 ± 3.43 216.45 ± 4.84
RH08 -0.568 ± 0.034 -0.272 ± 0.023 0.777 ± 0.560 50.94 ± 2.66 205.57 ± 1.69
RH09 -0.625 ± 0.053 -0.272 ± 0.053 0.732 ± 0.560 47.04 ± 4.13 203.57 ± 4.50
RH10 -0.699 ± 0.049 -0.262 ± 0.059 0.665 ± 0.543 41.67 ± 4.08 200.56 ± 4.64
Average -0.642 -0.359 0.610 38.972 209.556
Median -0.577 -0.375 0.701 44.509 215.280
Deviation 0.122 0.077 0.281 17.803 7.224

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 30.9 ± 1.5 377.6 ± 4.1 3.63 ± 0.37
VC 59.3 ± 1.2 275.1 ± 3.3 3.63 ± 0.37
MX1 57.9 ± 1.2 282.0 ± 3.3 3.63 ± 0.37
MX2 59.1 ± 1.2 275.8 ± 3.3 3.63 ± 0.37
MX3 59.6 ± 1.2 273.2 ± 3.3 3.63 ± 0.37
RH08 58.2 ± 1.1 272.4 ± 3.0 3.63 ± 0.37
RH09 54.3 ± 1.1 293.4 ± 3.2 3.63 ± 0.37
RH10 48.9 ± 1.2 320.5 ± 3.4 3.63 ± 0.37
Average 53.5 296.2 3.63
Median 58.2 282.0 3.63
Deviation 9.8 36.6 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 43.9 ± 1.1 21.2 ± 0.5 27.5 ± 0.4 37.8 ± 0.7 2.07 ± 0.07 1.16 ± 0.04
VC 66.7 ± 1.3 11.4 ± 0.3 16.4 ± 0.2 41.8 ± 0.8 5.86 ± 0.17 1.60 ± 0.04
MX1 66.7 ± 1.3 11.9 ± 0.3 17.0 ± 0.2 41.7 ± 0.8 5.61 ± 0.16 1.60 ± 0.04
MX2 66.7 ± 1.3 11.5 ± 0.3 16.5 ± 0.2 41.8 ± 0.8 5.81 ± 0.17 1.60 ± 0.04
MX3 66.7 ± 1.3 11.3 ± 0.3 16.3 ± 0.2 41.8 ± 0.8 5.90 ± 0.17 1.60 ± 0.04
RH8 65.6 ± 1.2 11.8 ± 0.3 16.9 ± 0.2 41.7 ± 0.8 5.55 ± 0.16 1.57 ± 0.04
RH9 66.1 ± 1.2 13.2 ± 0.3 18.7 ± 0.3 41.3 ± 0.8 5.02 ± 0.14 1.60 ± 0.04
RH10 66.1 ± 1.2 15.1 ± 0.3 21.1 ± 0.3 40.6 ± 0.8 4.37 ± 0.13 1.63 ± 0.04
Average 63.6 13.4 18.8 41.0 5.0 1.5
Median 66.7 11.9 17.0 41.7 5.6 1.6
Deviation 8.0 3.4 3.9 1.4 1.3 0.2

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 13.1 ± 2.7 23.5 ± 0.9 27.1 ± 1.9 43.2 ± 2.5 0.56 ± 0.14 0.31 ± 0.08
VC 18.2 ± 1.7 12.7 ± 0.5 16.1 ± 1.1 47.5 ± 2.5 1.44 ± 0.17 0.38 ± 0.04
MX1 18.2 ± 1.7 13.2 ± 0.5 16.7 ± 1.2 47.4 ± 2.5 1.38 ± 0.16 0.38 ± 0.04
MX2 18.2 ± 1.7 12.8 ± 0.5 16.2 ± 1.1 47.5 ± 2.5 1.42 ± 0.16 0.38 ± 0.04
MX3 18.2 ± 1.7 12.6 ± 0.5 16.0 ± 1.1 47.6 ± 2.5 1.45 ± 0.17 0.38 ± 0.04
RH8 17.8 ± 1.5 13.2 ± 0.5 16.6 ± 1.2 47.4 ± 2.5 1.36 ± 0.15 0.38 ± 0.04
RH9 18.3 ± 1.6 14.7 ± 0.6 18.4 ± 1.3 47.0 ± 2.5 1.25 ± 0.15 0.39 ± 0.05
RH10 18.7 ± 1.8 16.8 ± 0.7 20.7 ± 1.4 46.2 ± 2.5 1.11 ± 0.15 0.41 ± 0.06
Average 17.6 14.9 18.5 46.7 1.2 0.4
Median 18.2 13.2 16.7 47.4 1.4 0.4
Deviation 1.8 3.7 3.8 1.5 0.3 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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