CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Wind Shock Analysis
Event ID: 20123051428
Observation time: 10/31/2012 305.60304 1428 [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 2012
Fractional day of year 305.603038
Arrival time of shock [seconds of day] 52102.5 ± 20.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 257.881
Y GSE location of spacecraft [Re] -5.997
Z GSE location of spacecraft [Re] 22.528
Upstream plasma points selected for analysis 0004
Upstream field points selected for analysis 0103
Downstream plasma points selected for analysis 0005
Downstream field points selected for analysis 0154
Minimum chisq/dof for RH8,RH9,RH10 2.99, 31.05, 40.19
Event added to database
Tue Oct 8 15:59:59 2013
Event last processed
Tue Oct 8 17:37:30 2013
Method selected
RH08
Propagation delay to Earth [minutes]
70.510 ± 0.264

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -292.7 ± 1.2 -348.8 ± 1.7
Vy GSE [km/s] 4.3 ± 1.0 10.7 ± 4.4
Vz GSE [km/s] -1.6 ± 1.0 -2.8 ± 2.6
Wi [km/s] 23.2 ± 1.6 33.8 ± 1.6
We [km/s] 732.8 ± 49.3 1067.6 ± 49.1
Ni [n/cc] 11.9 ± 0.5 27.8 ± 1.0
Bx GSE [nT] 0.2 ± 0.1 -0.2 ± 0.3
By GSE [nT] -3.2 ± 0.1 -8.0 ± 1.0
Bz GSE [nT] 2.0 ± 0.5 2.7 ± 2.3
Plasma Beta
0.946 ± 0.943
0.888 ± 0.891
Sound Speed [km/s]
29.92 ± 2.01
43.59 ± 2.00
Alfven Speed [km/s]
23.96 ± 0.82
36.16 ± 2.72

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.772 ± 0.478 0.216 ± 0.665 -0.597 ± 0.513 -36.68 ± 44.01 164.40 ± 48.44
VC -0.993 ± 0.008 0.112 ± 0.070 -0.023 ± 0.023 -1.32 ± 2.61 173.57 ± 4.05
MX1 -0.998 ± 0.005 0.059 ± 0.078 0.011 ± 0.011 0.62 ± 4.96 176.63 ± 4.47
MX2 -0.997 ± 0.004 0.077 ± 0.055 -0.024 ± 0.024 -1.38 ± 3.15 175.59 ± 3.16
MX3 -0.996 ± 0.005 0.081 ± 0.052 -0.035 ± 0.035 -1.98 ± 3.18 175.33 ± 2.99
RH08 -0.998 ± 0.002 0.061 ± 0.023 -0.028 ± 0.028 -1.60 ± 1.15 176.49 ± 1.32
RH09 -0.711 ± 0.049 -0.081 ± 0.071 -0.698 ± 0.553 -44.29 ± 4.03 186.52 ± 5.69
RH10 -0.732 ± 0.047 -0.084 ± 0.069 -0.676 ± 0.547 -42.53 ± 3.99 186.52 ± 5.41
Average -0.900 0.055 -0.259 -16.145 176.881
Median -0.993 0.077 -0.028 -1.601 176.490
Deviation 0.134 0.099 0.331 20.844 7.139

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 58.2 ± 4.3 307.1 ± 0.7 2.33 ± 0.16
VC 81.5 ± 1.8 390.0 ± 1.2 2.33 ± 0.16
MX1 85.1 ± 1.8 390.6 ± 1.2 2.33 ± 0.16
MX2 83.2 ± 1.9 390.5 ± 1.2 2.33 ± 0.16
MX3 82.6 ± 1.9 390.4 ± 1.2 2.33 ± 0.16
RH08 83.8 ± 1.9 390.6 ± 1.2 2.33 ± 0.16
RH09 71.0 ± 5.4 279.5 ± 0.7 2.33 ± 0.16
RH10 71.8 ± 5.3 287.4 ± 3.0 2.33 ± 0.16
Average 77.1 353.3 2.33
Median 82.6 390.4 2.33
Deviation 9.4 51.9 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 79.1 ± 0.8 10.2 ± 0.2 12.6 ± 0.4 37.0 ± 1.4 7.76 ± 0.22 2.14 ± 0.10
VC 98.7 ± 1.3 2.8 ± 0.1 3.5 ± 0.1 38.3 ± 1.4 35.64 ± 1.17 2.58 ± 0.12
MX1 98.2 ± 1.3 1.6 ± 0.0 2.0 ± 0.1 38.3 ± 1.4 61.54 ± 2.02 2.56 ± 0.11
MX2 98.4 ± 1.3 2.2 ± 0.0 2.9 ± 0.1 38.3 ± 1.4 44.24 ± 1.44 2.57 ± 0.11
MX3 98.4 ± 1.3 2.4 ± 0.0 3.1 ± 0.1 38.3 ± 1.4 41.05 ± 1.34 2.57 ± 0.11
RH8 98.2 ± 1.3 2.0 ± 0.0 2.6 ± 0.1 38.3 ± 1.4 48.77 ± 1.59 2.57 ± 0.11
RH9 70.5 ± 0.5 6.2 ± 0.1 7.8 ± 0.3 37.9 ± 1.4 11.45 ± 0.29 1.87 ± 0.08
RH10 72.3 ± 0.5 5.9 ± 0.1 7.5 ± 0.3 37.9 ± 1.4 12.23 ± 0.32 1.91 ± 0.08
Average 89.2 4.2 5.3 38.0 32.8 2.3
Median 98.2 2.8 3.5 38.3 41.1 2.6
Deviation 12.8 3.0 3.7 0.5 20.0 0.3

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 33.7 ± 1.0 15.2 ± 0.6 19.1 ± 1.4 54.6 ± 1.8 2.22 ± 0.07 0.62 ± 0.01
VC 42.2 ± 1.7 4.1 ± 0.2 5.4 ± 0.4 56.5 ± 1.9 10.27 ± 0.66 0.75 ± 0.04
MX1 41.9 ± 1.7 2.4 ± 0.1 3.1 ± 0.2 56.6 ± 1.9 17.67 ± 1.17 0.74 ± 0.04
MX2 42.0 ± 1.7 3.3 ± 0.1 4.3 ± 0.3 56.6 ± 1.9 12.71 ± 0.82 0.74 ± 0.04
MX3 42.0 ± 1.7 3.6 ± 0.1 4.6 ± 0.3 56.6 ± 1.9 11.80 ± 0.75 0.74 ± 0.04
RH8 41.9 ± 1.6 3.0 ± 0.1 3.9 ± 0.3 56.6 ± 1.9 14.00 ± 0.90 0.74 ± 0.04
RH9 30.3 ± 1.4 9.2 ± 0.4 11.8 ± 0.9 55.9 ± 1.8 3.31 ± 0.19 0.54 ± 0.03
RH10 31.0 ± 1.4 8.8 ± 0.3 11.3 ± 0.9 56.0 ± 1.8 3.53 ± 0.20 0.55 ± 0.03
Average 38.1 6.2 7.9 56.2 9.4 0.7
Median 41.9 4.1 5.4 56.6 11.8 0.7
Deviation 5.4 4.5 5.6 0.7 5.7 0.1

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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