CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Wind Shock Analysis
Event ID: 19992351541
Observation time: 08/23/1999 235.65387 1541 [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 1999
Fractional day of year 235.653872
Arrival time of shock [seconds of day] 56494.5 ± 3.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 65.574
Y GSE location of spacecraft [Re] -17.555
Z GSE location of spacecraft [Re] -3.650
Upstream plasma points selected for analysis 0007
Upstream field points selected for analysis 0217
Downstream plasma points selected for analysis 0007
Downstream field points selected for analysis 0229
Minimum chisq/dof for RH8,RH9,RH10 7.82, 16.85, 17.44
Event added to database
Sun Oct 16 11:40:55 2005
Event last processed
Tue Mar 31 00:19:16 2009
Method selected
RH08
Propagation delay to Earth [minutes]
13.304 ± 0.718

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -429.7 ± 3.6 -449.0 ± 6.3
Vy GSE [km/s] -31.1 ± 1.1 -36.5 ± 1.2
Vz GSE [km/s] -6.4 ± 1.7 -12.1 ± 3.3
Wi [km/s] 36.2 ± 1.4 38.2 ± 1.8
We [km/s] 1144.0 ± 43.2 1208.0 ± 58.1
Ni [n/cc] 8.7 ± 0.4 11.2 ± 0.4
Bx GSE [nT] -0.7 ± 0.8 -1.2 ± 0.6
By GSE [nT] 10.5 ± 0.0 13.9 ± 0.3
Bz GSE [nT] -0.8 ± 0.3 0.0 ± 0.8
Plasma Beta
0.212 ± 0.213
0.177 ± 0.180
Sound Speed [km/s]
46.70 ± 1.76
49.32 ± 2.37
Alfven Speed [km/s]
78.65 ± 1.93
90.89 ± 1.52

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.973 ± 0.165 -0.171 ± 0.666 0.156 ± 0.155 8.97 ± 43.48 189.99 ± 39.18
VC -0.914 ± 0.076 -0.278 ± 0.101 -0.295 ± 0.286 -17.17 ± 14.15 196.91 ± 6.21
MX1 -0.950 ± 0.081 -0.046 ± 0.259 -0.310 ± 0.300 -18.06 ± 14.71 182.80 ± 15.64
MX2 -0.955 ± 0.075 -0.056 ± 0.255 -0.292 ± 0.283 -16.97 ± 14.45 183.33 ± 15.30
MX3 -0.967 ± 0.064 -0.078 ± 0.243 -0.243 ± 0.239 -14.09 ± 14.39 184.63 ± 14.42
RH08 -0.995 ± 0.002 0.009 ± 0.013 -0.095 ± 0.095 -5.45 ± 1.10 179.50 ± 0.77
RH09 -0.986 ± 0.012 0.026 ± 0.070 -0.162 ± 0.161 -9.32 ± 4.03 178.50 ± 4.07
RH10 -0.986 ± 0.012 0.026 ± 0.070 -0.162 ± 0.161 -9.32 ± 4.03 178.50 ± 4.07
Average -0.966 -0.071 -0.175 -10.178 184.270
Median -0.967 -0.046 -0.162 -9.324 183.332
Deviation 0.026 0.106 0.155 8.968 6.382

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 83.0 ± 4.5 507.4 ± 27.1 1.30 ± 0.06
VC 78.5 ± 4.4 498.1 ± 24.9 1.30 ± 0.06
MX1 88.0 ± 4.4 503.6 ± 24.9 1.30 ± 0.06
MX2 88.6 ± 4.4 506.2 ± 25.1 1.30 ± 0.06
MX3 89.9 ± 4.5 511.8 ± 25.5 1.30 ± 0.06
RH08 85.6 ± 4.6 516.6 ± 26.2 1.30 ± 0.06
RH09 84.4 ± 4.5 514.2 ± 25.8 1.30 ± 0.06
RH10 84.4 ± 4.5 514.2 ± 25.8 1.30 ± 0.06
Average 85.3 509.0 1.30
Median 85.6 511.8 1.30
Deviation 3.6 6.3 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 85.1 ± 3.7 4.9 ± 0.1 9.6 ± 0.2 91.4 ± 1.8 17.45 ± 0.95 0.93 ± 0.04
VC 94.8 ± 3.5 8.0 ± 0.2 15.6 ± 0.4 91.1 ± 1.8 11.84 ± 0.62 1.04 ± 0.04
MX1 92.1 ± 3.4 1.4 ± 0.0 2.7 ± 0.1 91.5 ± 1.8 66.51 ± 3.44 1.01 ± 0.04
MX2 92.3 ± 3.5 1.0 ± 0.0 1.9 ± 0.0 91.5 ± 1.8 94.10 ± 4.88 1.01 ± 0.04
MX3 92.4 ± 3.5 0.0 ± 0.0 0.1 ± 0.0 91.5 ± 1.8 2518.87 ± 131.41 1.01 ± 0.04
RH8 88.6 ± 3.6 3.1 ± 0.1 6.1 ± 0.1 91.4 ± 1.8 28.67 ± 1.52 0.97 ± 0.04
RH9 90.1 ± 3.5 3.9 ± 0.1 7.7 ± 0.2 91.4 ± 1.8 22.85 ± 1.19 0.99 ± 0.04
RH10 90.1 ± 3.5 3.9 ± 0.1 7.7 ± 0.2 91.4 ± 1.8 22.85 ± 1.19 0.99 ± 0.04
Average 90.7 3.3 6.4 91.4 347.9 1.0
Median 92.1 3.9 7.7 91.4 28.7 1.0
Deviation 2.9 2.5 5.0 0.1 877.7 0.0

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 66.3 ± 6.3 5.3 ± 0.2 11.0 ± 0.2 103.3 ± 2.1 12.61 ± 1.51 0.64 ± 0.07
VC 74.0 ± 6.1 8.7 ± 0.3 18.1 ± 0.3 103.1 ± 2.1 8.58 ± 0.96 0.72 ± 0.07
MX1 71.8 ± 6.1 1.5 ± 0.1 3.1 ± 0.1 103.4 ± 2.1 48.12 ± 5.49 0.69 ± 0.06
MX2 71.9 ± 6.1 1.1 ± 0.0 2.2 ± 0.0 103.4 ± 2.1 68.06 ± 7.78 0.70 ± 0.07
MX3 72.0 ± 6.2 0.0 ± 0.0 0.1 ± 0.0 103.4 ± 2.1 1820.75 ± 208.95 0.70 ± 0.07
RH8 68.9 ± 6.2 3.3 ± 0.1 7.0 ± 0.1 103.4 ± 2.1 20.70 ± 2.44 0.67 ± 0.07
RH9 70.3 ± 6.2 4.3 ± 0.2 8.9 ± 0.1 103.3 ± 2.1 16.55 ± 1.92 0.68 ± 0.07
RH10 70.3 ± 6.2 4.3 ± 0.2 8.9 ± 0.1 103.3 ± 2.1 16.55 ± 1.92 0.68 ± 0.07
Average 70.7 3.5 7.4 103.3 251.5 0.7
Median 71.8 4.3 8.9 103.4 20.7 0.7
Deviation 2.3 2.7 5.7 0.1 634.4 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 Mon Apr 13 08:55:21 2009
Michael L Stevens (mstevens@cfa.harvard.edu)

   
 

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