CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Ace Shock Analysis
Event ID: 20012291016
Observation time: 08/17/2001 229.42780 1016 [UT]

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General information
Asymptotic parameters
Shock front normals
Key parameters
Wave speed and Mach numbers
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Selected
Simple methods
Rankine
Individual equations
Shock speed
Theta Bn
Mach numbers


General Information (About, Top)

Year 2001
Fractional day of year 229.427801
Arrival time of shock [seconds of day] 36962.0 ± 16.0
Shock type SF
Electron data availability 0
X GSE location of spacecraft [Re] 0.038
Y GSE location of spacecraft [Re] -0.006
Z GSE location of spacecraft [Re] 0.003
Upstream plasma points selected for analysis 0013
Upstream field points selected for analysis 0053
Downstream plasma points selected for analysis 0010
Downstream field points selected for analysis 0037
Minimum chisq/dof for RH8,RH9,RH10 2.40, 7.47, 7.59
Event added to database
Sat Apr 30 21:51:55 2005
Event last processed
Tue May 3 14:02:27 2005
Method selected
RH08
Propagation delay to Earth [minutes]
0.008 ± 0.000

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -346.7 ± 4.2 -471.8 ± 5.4
Vy GSE [km/s] 5.4 ± 4.5 12.8 ± 11.9
Vz GSE [km/s] 21.4 ± 2.7 7.2 ± 6.2
Wi [km/s] 19.0 ± 1.3 36.3 ± 1.7
We [km/s] 599.8 ± 41.6 1148.9 ± 53.0
Ni [n/cc] 3.8 ± 0.5 17.9 ± 1.2
Bx GSE [nT] 0.6 ± 0.4 -0.1 ± 1.1
By GSE [nT] 1.2 ± 0.3 12.3 ± 3.1
Bz GSE [nT] 4.4 ± 0.3 13.8 ± 1.1
Plasma Beta
0.132 ± 0.131
0.147 ± 0.142
Sound Speed [km/s]
24.49 ± 1.70
46.90 ± 2.16
Alfven Speed [km/s]
52.44 ± 4.03
96.21 ± 8.71

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.524 ± 0.485 0.603 ± 0.449 -0.602 ± 0.516 -37.00 ± 29.80 130.99 ± 41.77
VC -0.992 ± 0.008 0.060 ± 0.096 -0.112 ± 0.112 -6.43 ± 2.92 176.55 ± 5.57
MX1 -0.991 ± 0.014 0.058 ± 0.085 -0.117 ± 0.117 -6.75 ± 6.42 176.67 ± 4.92
MX2 -0.990 ± 0.011 0.058 ± 0.085 -0.125 ± 0.125 -7.21 ± 4.52 176.65 ± 4.90
MX3 -0.990 ± 0.010 0.057 ± 0.086 -0.126 ± 0.126 -7.25 ± 4.12 176.71 ± 5.00
RH08 -0.995 ± 0.001 0.061 ± 0.014 -0.073 ± 0.072 -4.16 ± 0.71 176.49 ± 0.82
RH09 -0.996 ± 0.007 0.044 ± 0.069 -0.084 ± 0.084 -4.81 ± 4.02 177.49 ± 3.99
RH10 -0.996 ± 0.007 0.044 ± 0.069 -0.084 ± 0.084 -4.81 ± 4.02 177.49 ± 3.99
Average -0.934 0.123 -0.165 -9.802 171.130
Median -0.991 0.058 -0.112 -6.431 176.668
Deviation 0.166 0.194 0.178 11.054 16.225

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 61.0 ± 4.0 271.3 ± 11.9 5.06 ± 1.04
VC 77.6 ± 5.0 501.9 ± 8.8 5.06 ± 1.04
MX1 77.2 ± 5.0 501.6 ± 8.8 5.06 ± 1.04
MX2 76.8 ± 5.0 501.1 ± 8.8 5.06 ± 1.04
MX3 76.7 ± 5.0 501.1 ± 8.8 5.06 ± 1.04
RH08 79.8 ± 5.0 503.8 ± 8.9 5.06 ± 1.04
RH09 78.9 ± 5.0 503.6 ± 8.9 5.06 ± 1.04
RH10 78.9 ± 5.0 503.6 ± 8.9 5.06 ± 1.04
Average 75.8 473.5 5.06
Median 77.6 501.9 5.06
Deviation 6.1 81.7 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 99.4 ± 4.2 10.9 ± 0.7 25.4 ± 2.0 56.8 ± 4.1 9.12 ± 0.78 1.76 ± 0.17
VC 160.1 ± 4.3 4.8 ± 0.3 11.3 ± 0.9 57.7 ± 4.1 33.54 ± 2.28 2.79 ± 0.21
MX1 160.2 ± 4.3 4.9 ± 0.3 11.6 ± 0.9 57.7 ± 4.1 32.68 ± 2.22 2.79 ± 0.21
MX2 160.1 ± 4.3 5.1 ± 0.3 12.0 ± 0.9 57.7 ± 4.1 31.60 ± 2.14 2.79 ± 0.21
MX3 160.1 ± 4.3 5.1 ± 0.3 12.0 ± 0.9 57.7 ± 4.1 31.47 ± 2.13 2.79 ± 0.21
RH8 159.9 ± 4.3 4.0 ± 0.3 9.3 ± 0.7 57.8 ± 4.1 40.62 ± 2.75 2.78 ± 0.21
RH9 160.0 ± 4.3 4.3 ± 0.3 10.1 ± 0.8 57.7 ± 4.1 37.43 ± 2.53 2.79 ± 0.21
RH10 160.0 ± 4.3 4.3 ± 0.3 10.1 ± 0.8 57.7 ± 4.1 37.43 ± 2.53 2.79 ± 0.21
Average 152.5 5.4 12.7 57.6 31.7 2.7
Median 160.1 4.9 11.6 57.7 33.5 2.8
Deviation 21.5 2.3 5.2 0.3 9.7 0.4

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 20.8 ± 8.7 20.8 ± 0.7 46.7 ± 4.2 105.1 ± 7.6 1.01 ± 0.44 0.20 ± 0.09
VC 34.0 ± 5.0 9.1 ± 0.3 20.7 ± 1.9 106.8 ± 7.5 3.74 ± 0.52 0.32 ± 0.06
MX1 34.0 ± 5.0 9.3 ± 0.3 21.3 ± 1.9 106.7 ± 7.5 3.64 ± 0.50 0.32 ± 0.06
MX2 34.0 ± 5.0 9.7 ± 0.3 22.0 ± 2.0 106.7 ± 7.5 3.52 ± 0.49 0.32 ± 0.06
MX3 34.0 ± 5.0 9.7 ± 0.3 22.1 ± 2.0 106.7 ± 7.5 3.51 ± 0.49 0.32 ± 0.06
RH8 33.9 ± 5.0 7.5 ± 0.3 17.1 ± 1.5 106.9 ± 7.5 4.52 ± 0.63 0.32 ± 0.06
RH9 34.0 ± 5.1 8.1 ± 0.3 18.6 ± 1.7 106.8 ± 7.5 4.17 ± 0.58 0.32 ± 0.06
RH10 34.0 ± 5.1 8.1 ± 0.3 18.6 ± 1.7 106.8 ± 7.5 4.17 ± 0.58 0.32 ± 0.06
Average 32.3 10.3 23.4 106.6 3.5 0.3
Median 34.0 9.3 21.3 106.8 3.7 0.3
Deviation 4.7 4.3 9.6 0.6 1.1 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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