CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Wind Shock Analysis
Event ID: 20012302023
Observation time: 08/18/2001 230.84945 2023 [UT]

Wind spacecraft

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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 2001
Fractional day of year 230.849447
Arrival time of shock [seconds of day] 73392.2 ± 60.0
Shock type FR
Electron data availability 0
X GSE location of spacecraft [Re] 42.550
Y GSE location of spacecraft [Re] 296.063
Z GSE location of spacecraft [Re] 18.420
Upstream plasma points selected for analysis 0008
Upstream field points selected for analysis 0251
Downstream plasma points selected for analysis 0007
Downstream field points selected for analysis 0226
Minimum chisq/dof for RH8,RH9,RH10 23.08, 64.95, 66.67
Event added to database
Mon Feb 14 11:14:49 2005
Event last processed
Mon Mar 30 21:26:14 2009
Method selected
RH09
Propagation delay to Earth [minutes]
20.840 ± 5.149

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -482.1 ± 1.6 -510.9 ± 1.2
Vy GSE [km/s] 14.7 ± 1.0 -0.7 ± 0.8
Vz GSE [km/s] 20.3 ± 1.2 1.8 ± 0.9
Wi [km/s] 18.6 ± 0.9 13.5 ± 1.3
We [km/s] 588.2 ± 27.0 425.7 ± 40.2
Ni [n/cc] 26.1 ± 1.2 6.1 ± 0.7
Bx GSE [nT] -3.7 ± 0.1 -1.5 ± 0.2
By GSE [nT] 0.2 ± 0.2 -1.0 ± 0.2
Bz GSE [nT] 5.5 ± 0.3 2.2 ± 0.2
Plasma Beta
0.439 ± 0.452
0.299 ± 0.307
Sound Speed [km/s]
24.01 ± 1.10
17.38 ± 1.64
Alfven Speed [km/s]
28.19 ± 0.97
25.02 ± 1.62

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.733 ± 0.747 -0.679 ± 0.807 0.049 ± 0.049 2.80 ± 16.93 222.80 ± 63.06
VC -0.768 ± 0.022 -0.408 ± 0.025 -0.494 ± 0.449 -29.59 ± 2.30 208.01 ± 1.76
MX1 -0.815 ± 0.034 -0.404 ± 0.041 -0.415 ± 0.389 -24.50 ± 4.40 206.38 ± 2.70
MX2 -0.807 ± 0.035 -0.438 ± 0.030 -0.396 ± 0.374 -23.32 ± 5.36 208.50 ± 1.73
MX3 -0.819 ± 0.036 -0.386 ± 0.055 -0.424 ± 0.397 -25.10 ± 3.92 205.22 ± 3.73
RH08 -0.571 ± 0.021 0.626 ± 0.019 -0.531 ± 0.474 -32.05 ± 0.42 132.37 ± 1.88
RH09 -0.893 ± 0.031 -0.134 ± 0.069 -0.430 ± 0.401 -25.48 ± 4.00 188.52 ± 4.41
RH10 -0.893 ± 0.031 -0.134 ± 0.069 -0.430 ± 0.401 -25.48 ± 4.00 188.52 ± 4.41
Average -0.787 -0.245 -0.384 -22.840 195.042
Median -0.807 -0.386 -0.424 -25.100 206.384
Deviation 0.103 0.393 0.180 10.754 27.685

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 64.3 ± 2.4 335.0 ± 2.1 0.23 ± 0.04
VC 89.4 ± 2.2 342.6 ± 2.1 0.23 ± 0.04
MX1 84.1 ± 2.2 367.3 ± 2.2 0.23 ± 0.04
MX2 83.6 ± 2.3 363.2 ± 2.2 0.23 ± 0.04
MX3 84.4 ± 2.2 369.3 ± 2.2 0.23 ± 0.04
RH08 83.9 ± 1.3 268.4 ± 1.5 0.23 ± 0.04
RH09 82.0 ± 2.0 408.6 ± 2.2 0.23 ± 0.04
RH10 82.0 ± 2.0 408.6 ± 2.2 0.23 ± 0.04
Average 81.7 357.9 0.23
Median 83.9 367.3 0.23
Deviation 7.4 44.9 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC -9.3 ± 1.5 8.1 ± 0.2 12.2 ± 0.4 36.2 ± 0.7 -1.15 ± 0.16 -0.26 ± 0.04
VC -11.5 ± 1.4 0.2 ± 0.0 0.3 ± 0.0 37.1 ± 0.7 -63.49 ± 6.81 -0.31 ± 0.03
MX1 -11.3 ± 1.5 1.9 ± 0.0 2.9 ± 0.1 37.0 ± 0.7 -6.08 ± 0.68 -0.31 ± 0.04
MX2 -11.3 ± 1.5 2.1 ± 0.0 3.2 ± 0.1 37.0 ± 0.7 -5.50 ± 0.62 -0.31 ± 0.04
MX3 -11.4 ± 1.5 1.8 ± 0.0 2.7 ± 0.1 37.0 ± 0.7 -6.42 ± 0.72 -0.31 ± 0.04
RH8 -5.3 ± 1.2 1.9 ± 0.0 3.0 ± 0.1 37.0 ± 0.7 -2.70 ± 0.60 -0.14 ± 0.03
RH9 -11.1 ± 1.5 2.5 ± 0.1 3.9 ± 0.1 37.0 ± 0.7 -4.37 ± 0.52 -0.30 ± 0.04
RH10 -11.1 ± 1.5 2.5 ± 0.1 3.9 ± 0.1 37.0 ± 0.7 -4.37 ± 0.52 -0.30 ± 0.04
Average -10.3 2.6 4.0 36.9 -11.8 -0.3
Median -11.1 2.1 3.2 37.0 -4.4 -0.3
Deviation 2.1 2.3 3.5 0.3 21.0 0.1

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC -39.9 ± 1.4 6.3 ± 0.4 10.9 ± 0.7 29.9 ± 1.0 -6.38 ± 0.66 -1.34 ± 0.07
VC -49.0 ± 1.4 0.1 ± 0.0 0.2 ± 0.0 30.5 ± 1.0 -350.75 ± 33.20 -1.61 ± 0.08
MX1 -48.7 ± 1.4 1.4 ± 0.1 2.6 ± 0.2 30.5 ± 1.0 -33.77 ± 3.22 -1.60 ± 0.08
MX2 -48.6 ± 1.4 1.6 ± 0.1 2.8 ± 0.2 30.5 ± 1.0 -30.64 ± 2.93 -1.60 ± 0.08
MX3 -48.7 ± 1.4 1.4 ± 0.1 2.4 ± 0.2 30.5 ± 1.0 -35.63 ± 3.39 -1.60 ± 0.08
RH8 -22.0 ± 0.7 1.5 ± 0.1 2.7 ± 0.2 30.5 ± 1.0 -14.56 ± 1.24 -0.72 ± 0.04
RH9 -46.8 ± 1.3 2.0 ± 0.1 3.5 ± 0.2 30.5 ± 1.0 -23.87 ± 2.25 -1.54 ± 0.07
RH10 -46.8 ± 1.3 2.0 ± 0.1 3.5 ± 0.2 30.5 ± 1.0 -23.87 ± 2.25 -1.54 ± 0.07
Average -43.8 2.0 3.6 30.4 -64.9 -1.4
Median -46.8 1.6 2.8 30.5 -23.9 -1.5
Deviation 9.3 1.8 3.1 0.2 115.9 0.3

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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