CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Wind Shock Analysis
Event ID: 20000512103
Observation time: 02/20/2000 51.87762 2103 [UT]

Wind spacecraft

Site
Data tables
Selection
Normals
Parameters
Previous event
Next event
Yearly list
Main page
Help

General information
Asymptotic parameters
Shock front normals
Key parameters
Wave speed and Mach numbers
Survey
Selected
Simple methods
Rankine
Individual equations
Shock speed
Theta Bn
Mach numbers


General Information (About, Top)

Year 2000
Fractional day of year 51.877622
Arrival time of shock [seconds of day] 75826.5 ± 3.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 161.687
Y GSE location of spacecraft [Re] 22.227
Z GSE location of spacecraft [Re] 11.240
Upstream plasma points selected for analysis 0010
Upstream field points selected for analysis 0303
Downstream plasma points selected for analysis 0007
Downstream field points selected for analysis 0221
Minimum chisq/dof for RH8,RH9,RH10 3.38, 12.62, 12.91
Event added to database
Mon Feb 14 11:09:17 2005
Event last processed
Mon Mar 30 19:17:07 2009
Method selected
RH08
Propagation delay to Earth [minutes]
34.361 ± 2.926

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -320.6 ± 3.1 -400.7 ± 7.3
Vy GSE [km/s] -20.0 ± 0.8 -42.6 ± 1.6
Vz GSE [km/s] -2.5 ± 2.4 -46.3 ± 14.7
Wi [km/s] 24.7 ± 1.4 39.8 ± 6.5
We [km/s] 781.0 ± 44.7 1259.5 ± 207.0
Ni [n/cc] 8.6 ± 0.5 18.5 ± 1.4
Bx GSE [nT] -1.4 ± 0.6 -3.9 ± 0.9
By GSE [nT] 7.5 ± 0.1 16.2 ± 0.5
Bz GSE [nT] -0.3 ± 0.4 0.1 ± 3.8
Plasma Beta
0.189 ± 0.182
0.221 ± 0.176
Sound Speed [km/s]
31.88 ± 1.82
51.42 ± 8.45
Alfven Speed [km/s]
57.12 ± 1.58
86.90 ± 4.03

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.972 ± 0.229 -0.214 ± 0.962 -0.095 ± 0.094 -5.43 ± 54.57 192.39 ± 56.68
VC -0.852 ± 0.071 -0.243 ± 0.036 -0.464 ± 0.427 -27.63 ± 9.08 195.94 ± 2.01
MX1 -0.870 ± 0.077 -0.168 ± 0.114 -0.464 ± 0.428 -27.66 ± 9.30 190.90 ± 7.43
MX2 -0.878 ± 0.070 -0.178 ± 0.097 -0.445 ± 0.413 -26.43 ± 8.86 191.45 ± 6.28
MX3 -0.883 ± 0.066 -0.184 ± 0.087 -0.432 ± 0.403 -25.58 ± 8.66 191.79 ± 5.61
RH08 -0.923 ± 0.005 -0.155 ± 0.017 -0.352 ± 0.337 -20.61 ± 0.75 189.53 ± 1.07
RH09 -0.995 ± 0.007 -0.096 ± 0.068 0.039 ± 0.039 2.24 ± 4.06 185.52 ± 3.91
RH10 -0.995 ± 0.007 -0.096 ± 0.068 0.039 ± 0.039 2.24 ± 4.06 185.52 ± 3.91
Average -0.921 -0.167 -0.272 -16.106 190.379
Median -0.883 -0.168 -0.352 -20.607 191.452
Deviation 0.059 0.052 0.227 13.469 3.514

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 88.6 ± 4.6 479.3 ± 13.4 2.11 ± 0.20
VC 86.4 ± 4.5 458.2 ± 14.7 2.11 ± 0.20
MX1 89.2 ± 4.5 462.0 ± 14.5 2.11 ± 0.20
MX2 89.7 ± 4.5 465.0 ± 14.3 2.11 ± 0.20
MX3 89.9 ± 4.5 466.9 ± 14.2 2.11 ± 0.20
RH08 88.1 ± 4.6 474.5 ± 13.4 2.11 ± 0.20
RH09 84.9 ± 4.5 472.3 ± 14.7 2.11 ± 0.20
RH10 84.9 ± 4.5 472.3 ± 14.7 2.11 ± 0.20
Average 87.7 468.8 2.11
Median 88.6 472.3 2.11
Deviation 2.1 7.0 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 163.1 ± 2.9 0.7 ± 0.0 1.4 ± 0.0 65.4 ± 0.9 235.23 ± 10.72 2.49 ± 0.05
VC 179.1 ± 2.5 1.8 ± 0.1 3.6 ± 0.1 65.4 ± 0.9 101.62 ± 4.16 2.74 ± 0.04
MX1 178.7 ± 2.6 0.4 ± 0.0 0.8 ± 0.0 65.4 ± 0.9 452.03 ± 18.63 2.73 ± 0.05
MX2 178.9 ± 2.6 0.1 ± 0.0 0.3 ± 0.0 65.4 ± 0.9 1299.36 ± 53.78 2.73 ± 0.05
MX3 179.0 ± 2.6 0.0 ± 0.0 0.1 ± 0.0 65.4 ± 0.9 7357.23 ± 305.38 2.74 ± 0.05
RH8 174.6 ± 2.7 0.9 ± 0.0 1.9 ± 0.1 65.4 ± 0.9 193.38 ± 8.25 2.67 ± 0.05
RH9 151.6 ± 3.1 2.5 ± 0.1 5.1 ± 0.1 65.4 ± 0.9 60.91 ± 2.92 2.32 ± 0.05
RH10 151.6 ± 3.1 2.5 ± 0.1 5.1 ± 0.1 65.4 ± 0.9 60.91 ± 2.92 2.32 ± 0.05
Average 169.6 1.1 2.3 65.4 1220.1 2.6
Median 178.7 0.9 1.9 65.4 235.2 2.7
Deviation 12.3 1.0 2.1 0.0 2513.5 0.2

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 76.2 ± 5.8 1.1 ± 0.1 2.2 ± 0.1 101.3 ± 3.3 70.20 ± 8.46 0.75 ± 0.06
VC 85.0 ± 3.0 2.8 ± 0.3 5.5 ± 0.3 101.3 ± 3.3 30.77 ± 2.58 0.84 ± 0.03
MX1 84.9 ± 3.0 0.6 ± 0.1 1.2 ± 0.1 101.3 ± 3.3 136.93 ± 11.56 0.84 ± 0.03
MX2 85.1 ± 2.9 0.2 ± 0.0 0.4 ± 0.0 101.3 ± 3.3 394.09 ± 33.44 0.84 ± 0.03
MX3 85.2 ± 2.9 0.0 ± 0.0 0.1 ± 0.0 101.3 ± 3.3 2233.37 ± 190.39 0.84 ± 0.03
RH8 81.8 ± 3.0 1.4 ± 0.1 2.8 ± 0.1 101.3 ± 3.3 57.75 ± 5.23 0.81 ± 0.03
RH9 71.4 ± 7.7 3.9 ± 0.4 7.8 ± 0.4 101.2 ± 3.3 18.34 ± 2.70 0.71 ± 0.08
RH10 71.4 ± 7.7 3.9 ± 0.4 7.8 ± 0.4 101.2 ± 3.3 18.34 ± 2.70 0.71 ± 0.08
Average 80.1 1.8 3.5 101.3 370.0 0.8
Median 84.9 1.4 2.8 101.3 70.2 0.8
Deviation 6.2 1.6 3.1 0.0 763.2 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 Mon Apr 13 08:55:21 2009
Michael L Stevens (mstevens@cfa.harvard.edu)

   
 

Section Photo