CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Wind Shock Analysis
Event ID: 20111920827
Observation time: 07/11/2011 192.35238 0827 [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 2011
Fractional day of year 192.352378
Arrival time of shock [seconds of day] 30445.5 ± 20.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 212.892
Y GSE location of spacecraft [Re] -91.332
Z GSE location of spacecraft [Re] -3.567
Upstream plasma points selected for analysis 0004
Upstream field points selected for analysis 0130
Downstream plasma points selected for analysis 0004
Downstream field points selected for analysis 0138
Minimum chisq/dof for RH8,RH9,RH10 16.41, 37.32, 43.93
Event added to database
Fri Sep 20 13:20:11 2013
Event last processed
Tue Sep 24 10:19:46 2013
Method selected
RH08
Propagation delay to Earth [minutes]
29.504 ± 2.939

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -493.7 ± 7.5 -553.3 ± 3.4
Vy GSE [km/s] -8.4 ± 3.6 -32.4 ± 3.0
Vz GSE [km/s] 2.4 ± 4.5 41.6 ± 4.7
Wi [km/s] 43.2 ± 1.1 54.9 ± 1.2
We [km/s] 1365.3 ± 35.3 1735.8 ± 37.9
Ni [n/cc] 5.0 ± 0.1 9.5 ± 0.6
Bx GSE [nT] 0.6 ± 1.3 -0.1 ± 1.4
By GSE [nT] 5.1 ± 0.4 9.1 ± 1.0
Bz GSE [nT] 1.7 ± 0.7 5.1 ± 1.4
Plasma Beta
0.637 ± 0.661
0.553 ± 0.583
Sound Speed [km/s]
55.74 ± 1.44
70.86 ± 1.55
Alfven Speed [km/s]
54.26 ± 2.98
74.68 ± 6.51

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.948 ± 0.309 -0.303 ± 0.951 0.100 ± 0.100 5.75 ± 30.37 197.76 ± 57.51
VC -0.790 ± 0.057 -0.324 ± 0.075 0.521 ± 0.468 31.42 ± 5.82 202.29 ± 5.25
MX1 -0.795 ± 0.102 -0.435 ± 0.184 0.422 ± 0.395 24.95 ± 2.98 208.67 ± 13.24
MX2 -0.780 ± 0.094 -0.443 ± 0.158 0.443 ± 0.411 26.28 ± 4.47 209.61 ± 11.56
MX3 -0.769 ± 0.096 -0.448 ± 0.151 0.456 ± 0.421 27.11 ± 5.97 210.20 ± 11.07
RH08 -0.902 ± 0.014 -0.234 ± 0.031 0.363 ± 0.346 21.29 ± 1.80 194.54 ± 1.93
RH09 -0.942 ± 0.023 -0.335 ± 0.065 -0.006 ± 0.006 -0.32 ± 4.05 199.55 ± 3.94
RH10 -0.942 ± 0.023 -0.335 ± 0.065 -0.006 ± 0.006 -0.32 ± 4.05 199.55 ± 3.94
Average -0.859 -0.357 0.287 17.020 202.772
Median -0.795 -0.335 0.422 24.954 202.286
Deviation 0.082 0.077 0.220 13.117 5.983

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 69.2 ± 11.8 611.9 ± 2.4 1.92 ± 0.14
VC 77.1 ± 6.9 549.1 ± 3.5 1.92 ± 0.14
MX1 69.1 ± 7.4 551.2 ± 3.4 1.92 ± 0.14
MX2 69.1 ± 7.0 543.3 ± 3.5 1.92 ± 0.14
MX3 69.2 ± 6.8 538.1 ± 3.5 1.92 ± 0.14
RH08 78.4 ± 9.4 601.4 ± 3.0 1.92 ± 0.14
RH09 65.4 ± 12.6 601.8 ± 2.2 1.92 ± 0.14
RH10 65.4 ± 12.6 601.8 ± 8.7 1.92 ± 0.14
Average 70.4 574.8 1.92
Median 69.2 601.4 1.92
Deviation 4.9 31.9 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 141.3 ± 6.0 14.0 ± 0.5 19.2 ± 1.1 76.5 ± 2.7 10.10 ± 0.63 1.85 ± 0.12
VC 155.3 ± 3.1 8.7 ± 0.3 12.1 ± 0.7 77.3 ± 2.7 17.84 ± 0.76 2.01 ± 0.08
MX1 153.8 ± 3.3 14.1 ± 0.5 19.4 ± 1.1 76.5 ± 2.7 10.91 ± 0.50 2.01 ± 0.09
MX2 153.6 ± 3.1 14.1 ± 0.5 19.3 ± 1.1 76.5 ± 2.7 10.93 ± 0.49 2.01 ± 0.09
MX3 153.4 ± 2.9 14.0 ± 0.5 19.3 ± 1.1 76.5 ± 2.7 10.94 ± 0.49 2.01 ± 0.09
RH8 153.2 ± 4.8 7.9 ± 0.3 11.0 ± 0.6 77.4 ± 2.7 19.46 ± 0.98 1.98 ± 0.10
RH9 133.8 ± 6.4 16.6 ± 0.6 22.6 ± 1.2 76.0 ± 2.7 8.08 ± 0.55 1.76 ± 0.12
RH10 133.8 ± 6.4 16.6 ± 0.6 22.6 ± 1.2 76.0 ± 2.7 8.08 ± 0.55 1.76 ± 0.12
Average 147.3 13.2 18.2 76.6 12.0 1.9
Median 153.4 14.1 19.3 76.5 10.9 2.0
Deviation 9.4 3.3 4.4 0.5 4.3 0.1

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 73.6 ± 2.7 18.5 ± 0.6 26.5 ± 2.3 101.4 ± 3.6 3.99 ± 0.14 0.73 ± 0.03
VC 80.1 ± 2.1 11.5 ± 0.4 16.6 ± 1.5 102.4 ± 3.6 6.97 ± 0.24 0.78 ± 0.03
MX1 79.4 ± 2.2 18.6 ± 0.6 26.7 ± 2.3 101.4 ± 3.6 4.27 ± 0.15 0.78 ± 0.03
MX2 79.2 ± 2.3 18.6 ± 0.6 26.6 ± 2.3 101.4 ± 3.6 4.27 ± 0.16 0.78 ± 0.03
MX3 79.0 ± 2.3 18.5 ± 0.6 26.5 ± 2.3 101.4 ± 3.6 4.27 ± 0.16 0.78 ± 0.03
RH8 79.7 ± 2.0 10.4 ± 0.3 15.1 ± 1.3 102.5 ± 3.6 7.67 ± 0.22 0.78 ± 0.03
RH9 69.9 ± 3.0 21.9 ± 0.7 31.1 ± 2.7 100.7 ± 3.6 3.20 ± 0.13 0.69 ± 0.03
RH10 69.9 ± 3.0 21.9 ± 0.7 31.1 ± 2.7 100.7 ± 3.6 3.20 ± 0.13 0.69 ± 0.03
Average 76.3 17.5 25.0 101.5 4.7 0.8
Median 79.2 18.6 26.6 101.4 4.3 0.8
Deviation 4.5 4.3 6.0 0.7 1.7 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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