CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Wind Shock Analysis
Event ID: 20012560231
Observation time: 09/13/2001 256.10519 0231 [UT]

Wind spacecraft

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Asymptotic parameters
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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 256.105191
Arrival time of shock [seconds of day] 9088.5 ± 6.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 20.662
Y GSE location of spacecraft [Re] -35.837
Z GSE location of spacecraft [Re] 1.127
Upstream plasma points selected for analysis 0006
Upstream field points selected for analysis 0190
Downstream plasma points selected for analysis 0005
Downstream field points selected for analysis 0165
Minimum chisq/dof for RH8,RH9,RH10 6.47, 9.34, 9.91
Event added to database
Mon Feb 14 11:15:21 2005
Event last processed
Mon Mar 30 21:36:35 2009
Method selected
RH08
Propagation delay to Earth [minutes]
5.754 ± 0.514

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -361.0 ± 3.8 -395.1 ± 3.9
Vy GSE [km/s] -14.0 ± 3.0 -26.0 ± 1.0
Vz GSE [km/s] -24.4 ± 12.0 -34.6 ± 12.5
Wi [km/s] 40.5 ± 3.5 44.4 ± 2.5
We [km/s] 1279.5 ± 110.6 1404.4 ± 77.9
Ni [n/cc] 6.7 ± 0.8 10.2 ± 0.6
Bx GSE [nT] -1.8 ± 1.2 -1.0 ± 0.9
By GSE [nT] 8.2 ± 0.3 12.0 ± 0.4
Bz GSE [nT] 0.2 ± 2.4 -0.7 ± 2.2
Plasma Beta
0.307 ± 0.327
0.282 ± 0.250
Sound Speed [km/s]
52.24 ± 4.52
57.34 ± 3.18
Alfven Speed [km/s]
74.01 ± 4.45
84.17 ± 3.66

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.978 ± 0.143 0.044 ± 1.113 -0.202 ± 0.200 -11.68 ± 37.90 177.44 ± 65.18
VC -0.920 ± 0.080 -0.330 ± 0.090 -0.212 ± 0.209 -12.26 ± 21.20 199.76 ± 5.38
MX1 -0.906 ± 0.171 0.402 ± 0.372 -0.131 ± 0.130 -7.51 ± 21.08 156.05 ± 23.49
MX2 -0.944 ± 0.109 0.265 ± 0.339 -0.198 ± 0.195 -11.41 ± 16.27 164.34 ± 20.59
MX3 -0.958 ± 0.084 0.146 ± 0.346 -0.246 ± 0.241 -14.25 ± 15.32 171.33 ± 20.67
RH08 -0.992 ± 0.005 0.113 ± 0.037 -0.061 ± 0.061 -3.52 ± 2.54 173.48 ± 2.12
RH09 -0.989 ± 0.010 0.148 ± 0.068 -0.006 ± 0.006 -0.32 ± 4.05 171.48 ± 3.94
RH10 -0.989 ± 0.010 0.148 ± 0.067 -0.028 ± 0.028 -1.60 ± 4.06 171.48 ± 3.91
Average -0.959 0.117 -0.136 -7.818 173.170
Median -0.958 0.148 -0.131 -7.508 171.476
Deviation 0.033 0.211 0.093 5.376 12.567

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 76.3 ± 10.3 460.7 ± 35.3 1.54 ± 0.22
VC 82.4 ± 9.9 452.8 ± 34.9 1.54 ± 0.22
MX1 55.7 ± 10.2 405.3 ± 30.7 1.54 ± 0.22
MX2 63.9 ± 10.6 433.7 ± 33.5 1.54 ± 0.22
MX3 70.8 ± 10.9 449.1 ± 35.2 1.54 ± 0.22
RH08 72.1 ± 9.0 454.5 ± 33.4 1.54 ± 0.22
RH09 70.1 ± 8.5 448.1 ± 32.5 1.54 ± 0.22
RH10 70.1 ± 8.7 449.3 ± 32.7 1.54 ± 0.22
Average 70.2 444.2 1.54
Median 70.8 449.3 1.54
Deviation 7.9 17.5 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 103.2 ± 4.9 10.1 ± 0.5 17.5 ± 1.0 90.2 ± 2.2 10.26 ± 0.82 1.14 ± 0.06
VC 111.0 ± 5.0 5.6 ± 0.3 9.7 ± 0.6 90.6 ± 2.2 19.91 ± 1.58 1.23 ± 0.06
MX1 80.6 ± 4.2 24.9 ± 1.3 41.7 ± 2.5 87.3 ± 2.3 3.25 ± 0.27 0.92 ± 0.06
MX2 91.8 ± 4.7 19.1 ± 0.9 32.5 ± 2.0 88.7 ± 2.3 4.83 ± 0.40 1.04 ± 0.06
MX3 99.3 ± 5.2 14.1 ± 0.7 24.3 ± 1.5 89.6 ± 2.2 7.05 ± 0.60 1.11 ± 0.06
RH8 96.6 ± 4.0 13.2 ± 0.6 22.8 ± 1.4 89.8 ± 2.2 7.34 ± 0.54 1.08 ± 0.05
RH9 93.0 ± 3.8 14.7 ± 0.7 25.2 ± 1.5 89.6 ± 2.2 6.35 ± 0.45 1.04 ± 0.05
RH10 93.8 ± 3.9 14.6 ± 0.7 25.2 ± 1.5 89.6 ± 2.2 6.42 ± 0.46 1.05 ± 0.05
Average 96.2 14.5 24.9 89.4 8.2 1.1
Median 96.6 14.6 25.2 89.6 7.1 1.1
Deviation 8.9 5.7 9.5 1.0 5.2 0.1

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 68.3 ± 6.2 11.2 ± 0.3 19.9 ± 0.9 101.3 ± 2.2 6.09 ± 0.61 0.67 ± 0.06
VC 73.5 ± 5.7 6.2 ± 0.2 11.1 ± 0.5 101.7 ± 2.2 11.81 ± 1.03 0.72 ± 0.05
MX1 53.2 ± 5.4 27.7 ± 0.9 47.5 ± 2.1 98.1 ± 2.3 1.92 ± 0.22 0.54 ± 0.05
MX2 60.8 ± 6.2 21.2 ± 0.7 37.0 ± 1.6 99.7 ± 2.2 2.86 ± 0.32 0.61 ± 0.06
MX3 65.8 ± 6.8 15.7 ± 0.5 27.7 ± 1.2 100.7 ± 2.2 4.19 ± 0.47 0.65 ± 0.06
RH8 63.5 ± 4.6 14.7 ± 0.4 25.9 ± 1.1 100.8 ± 2.2 4.33 ± 0.36 0.63 ± 0.04
RH9 61.0 ± 4.0 16.3 ± 0.5 28.7 ± 1.2 100.6 ± 2.2 3.74 ± 0.29 0.61 ± 0.03
RH10 61.6 ± 4.3 16.3 ± 0.5 28.7 ± 1.2 100.6 ± 2.2 3.78 ± 0.31 0.61 ± 0.04
Average 63.4 16.2 28.3 100.4 4.8 0.6
Median 63.5 16.3 28.7 100.7 4.2 0.6
Deviation 6.0 6.4 10.8 1.1 3.1 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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