CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Wind Shock Analysis
Event ID: 20011080049
Observation time: 04/18/2001 108.03460 0049 [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 108.034601
Arrival time of shock [seconds of day] 2989.5 ± 6.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 5.562
Y GSE location of spacecraft [Re] -263.428
Z GSE location of spacecraft [Re] -2.682
Upstream plasma points selected for analysis 0009
Upstream field points selected for analysis 0292
Downstream plasma points selected for analysis 0009
Downstream field points selected for analysis 0299
Minimum chisq/dof for RH8,RH9,RH10 14.92, 58.08, 61.66
Event added to database
Mon Feb 14 11:13:34 2005
Event last processed
Mon Mar 30 20:54:07 2009
Method selected
RH08
Propagation delay to Earth [minutes]
-0.250 ± 0.429

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -362.7 ± 4.9 -510.1 ± 7.3
Vy GSE [km/s] -19.3 ± 1.9 -22.9 ± 5.0
Vz GSE [km/s] 7.2 ± 1.1 20.7 ± 7.3
Wi [km/s] 29.1 ± 1.0 50.2 ± 4.8
We [km/s] 919.5 ± 31.3 1586.2 ± 152.1
Ni [n/cc] 7.0 ± 0.3 17.5 ± 2.3
Bx GSE [nT] 2.2 ± 0.8 -2.5 ± 0.8
By GSE [nT] -5.1 ± 0.2 -10.4 ± 3.4
Bz GSE [nT] 1.7 ± 0.6 -11.2 ± 3.5
Plasma Beta
0.373 ± 0.349
0.356 ± 0.358
Sound Speed [km/s]
37.54 ± 1.28
64.76 ± 6.21
Alfven Speed [km/s]
48.04 ± 3.19
84.70 ± 3.67

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.390 ± 0.135 0.885 ± 0.081 -0.257 ± 0.251 -14.86 ± 13.61 113.77 ± 8.57
VC -0.995 ± 0.005 -0.024 ± 0.033 0.092 ± 0.092 5.27 ± 2.80 181.40 ± 1.92
MX1 -0.993 ± 0.097 0.113 ± 0.846 0.041 ± 0.041 2.33 ± 16.23 173.51 ± 48.82
MX2 -0.954 ± 0.021 0.147 ± 0.090 0.262 ± 0.256 15.17 ± 3.51 171.26 ± 5.38
MX3 -0.952 ± 0.019 0.073 ± 0.076 0.297 ± 0.288 17.27 ± 3.54 175.61 ± 4.56
RH08 -0.999 ± 0.000 -0.026 ± 0.010 0.028 ± 0.028 1.60 ± 0.67 181.50 ± 0.55
RH09 -0.993 ± 0.008 -0.009 ± 0.070 -0.117 ± 0.117 -6.74 ± 4.01 180.50 ± 4.07
RH10 -0.976 ± 0.015 0.026 ± 0.071 -0.218 ± 0.214 -12.58 ± 3.97 178.50 ± 4.16
Average -0.906 0.148 0.016 0.933 169.506
Median -0.976 0.073 0.041 2.333 178.496
Deviation 0.210 0.304 0.204 11.844 22.835

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 8.1 ± 5.2 206.6 ± 12.8 2.48 ± 0.30
VC 71.4 ± 6.8 608.3 ± 37.9 2.48 ± 0.30
MX1 63.1 ± 6.9 603.3 ± 37.1 2.48 ± 0.30
MX2 66.1 ± 5.2 583.2 ± 36.8 2.48 ± 0.30
MX3 70.7 ± 5.1 584.2 ± 37.2 2.48 ± 0.30
RH08 70.4 ± 7.2 609.6 ± 37.7 2.48 ± 0.30
RH09 67.0 ± 8.0 601.2 ± 36.7 2.48 ± 0.30
RH10 63.7 ± 8.5 586.8 ± 35.5 2.48 ± 0.30
Average 60.1 547.9 2.48
Median 67.0 601.2 2.48
Deviation 21.3 138.3 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 84.2 ± 1.0 36.6 ± 1.1 47.6 ± 3.2 48.8 ± 2.9 2.30 ± 0.07 1.73 ± 0.10
VC 246.1 ± 4.9 9.5 ± 0.3 15.3 ± 1.0 60.3 ± 2.3 25.89 ± 0.44 4.09 ± 0.09
MX1 245.2 ± 4.7 13.7 ± 0.4 21.7 ± 1.4 59.5 ± 2.3 17.89 ± 0.30 4.13 ± 0.09
MX2 238.2 ± 4.4 12.2 ± 0.3 19.5 ± 1.3 59.8 ± 2.3 19.51 ± 0.33 3.99 ± 0.09
MX3 238.2 ± 4.5 9.9 ± 0.3 15.9 ± 1.1 60.2 ± 2.3 24.10 ± 0.41 3.96 ± 0.09
RH8 246.5 ± 4.9 10.1 ± 0.3 16.1 ± 1.1 60.2 ± 2.3 24.52 ± 0.41 4.10 ± 0.09
RH9 241.7 ± 4.9 11.7 ± 0.3 18.7 ± 1.2 59.9 ± 2.3 20.60 ± 0.35 4.04 ± 0.08
RH10 235.0 ± 4.8 13.4 ± 0.4 21.3 ± 1.4 59.5 ± 2.3 17.56 ± 0.30 3.95 ± 0.08
Average 221.9 14.6 22.0 58.5 19.0 3.7
Median 241.7 12.2 19.5 59.9 20.6 4.0
Deviation 55.8 9.0 10.6 3.9 7.5 0.8

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 33.4 ± 5.9 63.1 ± 5.3 83.9 ± 3.6 86.0 ± 3.5 0.53 ± 0.11 0.39 ± 0.06
VC 98.1 ± 7.2 16.5 ± 0.9 27.0 ± 1.2 105.5 ± 4.5 5.95 ± 0.55 0.93 ± 0.07
MX1 98.7 ± 7.3 23.8 ± 1.4 38.3 ± 1.7 104.1 ± 4.4 4.16 ± 0.39 0.95 ± 0.07
MX2 94.5 ± 7.0 21.2 ± 1.2 34.3 ± 1.5 104.6 ± 4.4 4.47 ± 0.39 0.90 ± 0.06
MX3 94.1 ± 7.0 17.2 ± 1.0 28.0 ± 1.2 105.4 ± 4.5 5.49 ± 0.47 0.89 ± 0.06
RH8 98.7 ± 7.2 17.5 ± 1.0 28.5 ± 1.2 105.3 ± 4.5 5.67 ± 0.53 0.94 ± 0.07
RH9 96.9 ± 7.4 20.4 ± 1.2 33.0 ± 1.4 104.8 ± 4.4 4.77 ± 0.48 0.93 ± 0.07
RH10 94.2 ± 7.5 23.2 ± 1.3 37.5 ± 1.6 104.2 ± 4.4 4.07 ± 0.43 0.91 ± 0.07
Average 88.6 25.4 38.8 102.5 4.4 0.9
Median 96.9 21.2 34.3 104.8 4.8 0.9
Deviation 22.4 15.5 18.7 6.7 1.7 0.2

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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