CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Wind Shock Analysis
Event ID: 20121681934
Observation time: 06/16/2012 168.81571 1934 [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 2012
Fractional day of year 168.815712
Arrival time of shock [seconds of day] 70477.5 ± 20.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 322.532
Y GSE location of spacecraft [Re] 167.993
Z GSE location of spacecraft [Re] 67.314
Upstream plasma points selected for analysis 0003
Upstream field points selected for analysis 0091
Downstream plasma points selected for analysis 0003
Downstream field points selected for analysis 0096
Minimum chisq/dof for RH8,RH9,RH10 119.54, Infinity, -5036.54
Event added to database
Thu Sep 19 16:24:09 2013
Event last processed
Mon Oct 7 14:22:10 2013
Method selected
RH08
Propagation delay to Earth [minutes]
54.569 ± 4.845

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -415.5 ± 1.5 -460.1 ± 2.3
Vy GSE [km/s] -13.5 ± 2.9 -19.9 ± 2.8
Vz GSE [km/s] -7.3 ± 2.0 -3.6 ± 2.2
Wi [km/s] 29.7 ± 1.2 39.8 ± 0.5
We [km/s] 937.9 ± 38.0 1259.6 ± 16.9
Ni [n/cc] 18.7 ± 0.6 32.2 ± 0.5
Bx GSE [nT] -1.5 ± 1.0 1.3 ± 0.2
By GSE [nT] 0.4 ± 1.8 9.3 ± 0.7
Bz GSE [nT] 7.8 ± 0.5 12.6 ± 0.4
Plasma Beta
0.528 ± 0.468
0.437 ± 0.437
Sound Speed [km/s]
38.29 ± 1.55
51.42 ± 0.69
Alfven Speed [km/s]
41.20 ± 2.77
60.24 ± 0.67

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.343 ± 0.087 -0.367 ± 0.089 0.865 ± 0.525 59.87 ± 6.91 226.96 ± 7.74
VC -0.987 ± 0.011 -0.138 ± 0.069 0.080 ± 0.080 4.61 ± 3.06 187.96 ± 4.00
MX1 -0.761 ± 0.142 -0.112 ± 0.067 0.640 ± 0.533 39.77 ± 12.82 188.35 ± 4.77
MX2 -0.927 ± 0.025 0.080 ± 0.092 0.367 ± 0.349 21.50 ± 3.78 175.08 ± 5.70
MX3 -0.959 ± 0.025 0.150 ± 0.111 0.242 ± 0.237 14.01 ± 4.45 171.13 ± 6.61
RH08 -0.946 ± 0.023 0.281 ± 0.067 0.162 ± 0.161 9.32 ± 4.03 163.45 ± 4.07
RH09 -0.032 ± 0.009 0.146 ± 0.034 -0.989 ± 0.212 -81.43 ± 2.00 102.28 ± 2.00
RH10 -0.152 ± 0.069 -0.761 ± 0.046 -0.631 ± 0.530 -39.14 ± 4.02 258.72 ± 5.18
Average -0.638 -0.090 0.092 3.563 184.242
Median -0.761 0.080 0.242 14.006 187.957
Deviation 0.398 0.340 0.620 44.710 45.992

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 27.2 ± 14.9 190.2 ± 3.2 1.72 ± 0.08
VC 75.8 ± 8.6 519.9 ± 3.1 1.72 ± 0.08
MX1 41.5 ± 9.8 402.3 ± 3.4 1.72 ± 0.08
MX2 58.6 ± 6.0 483.4 ± 2.9 1.72 ± 0.08
MX3 65.8 ± 4.8 497.5 ± 2.7 1.72 ± 0.08
RH08 70.2 ± 2.7 486.9 ± 2.3 1.72 ± 0.08
RH09 20.2 ± 6.1 10.5 ± 2.1 1.72 ± 0.08
RH10 50.4 ± 14.8 100.5 ± 4.2 1.72 ± 0.08
Average 51.2 336.4 1.72
Median 58.6 483.4 1.72
Deviation 20.2 204.0 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 49.1 ± 3.1 29.0 ± 0.4 36.6 ± 2.5 48.2 ± 1.0 1.69 ± 0.12 1.02 ± 0.08
VC 108.4 ± 2.0 6.9 ± 0.1 10.1 ± 0.7 55.9 ± 1.0 15.70 ± 0.50 1.94 ± 0.07
MX1 89.5 ± 2.5 22.9 ± 0.3 30.9 ± 2.1 51.4 ± 1.0 3.90 ± 0.15 1.74 ± 0.08
MX2 101.9 ± 1.7 15.1 ± 0.2 21.5 ± 1.4 54.2 ± 1.0 6.73 ± 0.20 1.88 ± 0.07
MX3 102.9 ± 1.3 11.7 ± 0.2 16.9 ± 1.1 55.1 ± 1.0 8.77 ± 0.23 1.87 ± 0.06
RH8 98.8 ± 0.9 9.6 ± 0.1 13.9 ± 0.9 55.5 ± 1.0 10.29 ± 0.23 1.78 ± 0.05
RH9 -7.9 ± 2.3 31.8 ± 0.4 38.7 ± 2.6 46.4 ± 1.0 -0.25 ± 0.08 -0.17 ± 0.05
RH10 22.6 ± 1.6 18.9 ± 0.3 26.2 ± 1.8 53.0 ± 1.0 1.19 ± 0.10 0.43 ± 0.04
Average 70.7 18.3 24.4 52.5 6.0 1.3
Median 98.8 18.9 26.2 54.2 6.7 1.8
Deviation 44.0 9.1 10.5 3.5 5.4 0.8

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 28.3 ± 3.5 40.5 ± 0.5 53.6 ± 0.6 68.1 ± 0.8 0.70 ± 0.08 0.42 ± 0.05
VC 63.2 ± 2.8 9.7 ± 0.1 14.8 ± 0.2 78.6 ± 0.9 6.55 ± 0.22 0.80 ± 0.03
MX1 52.5 ± 3.3 32.0 ± 0.4 45.1 ± 0.5 72.4 ± 0.9 1.64 ± 0.09 0.72 ± 0.04
MX2 59.8 ± 2.7 21.2 ± 0.3 31.4 ± 0.4 76.3 ± 0.9 2.82 ± 0.10 0.78 ± 0.03
MX3 60.3 ± 2.3 16.4 ± 0.2 24.7 ± 0.3 77.5 ± 0.9 3.67 ± 0.11 0.78 ± 0.02
RH8 57.9 ± 1.8 13.4 ± 0.2 20.4 ± 0.2 78.1 ± 0.9 4.31 ± 0.11 0.74 ± 0.02
RH9 -4.7 ± 2.4 44.3 ± 0.6 56.6 ± 0.6 65.7 ± 0.8 -0.11 ± 0.05 -0.07 ± 0.04
RH10 13.3 ± 1.7 26.4 ± 0.3 38.4 ± 0.4 74.7 ± 0.9 0.50 ± 0.06 0.18 ± 0.02
Average 41.3 25.5 35.6 73.9 2.5 0.5
Median 57.9 26.4 38.4 76.3 2.8 0.7
Deviation 25.8 12.6 15.4 4.8 2.3 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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