CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Wind Shock Analysis
Event ID: 19992271033
Observation time: 08/15/1999 227.44012 1033 [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 1999
Fractional day of year 227.440122
Arrival time of shock [seconds of day] 38026.5 ± 3.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 35.200
Y GSE location of spacecraft [Re] 45.788
Z GSE location of spacecraft [Re] 3.030
Upstream plasma points selected for analysis 0007
Upstream field points selected for analysis 0222
Downstream plasma points selected for analysis 0008
Downstream field points selected for analysis 0247
Minimum chisq/dof for RH8,RH9,RH10 5.39, 22.25, 22.96
Event added to database
Mon Feb 14 11:08:33 2005
Event last processed
Mon Mar 30 18:55:35 2009
Method selected
RH09
Propagation delay to Earth [minutes]
7.111 ± 0.845

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -332.8 ± 1.4 -375.5 ± 1.8
Vy GSE [km/s] -3.6 ± 1.0 2.3 ± 1.6
Vz GSE [km/s] -23.1 ± 1.9 -29.4 ± 2.0
Wi [km/s] 31.4 ± 1.2 40.9 ± 2.4
We [km/s] 993.1 ± 39.3 1294.3 ± 75.7
Ni [n/cc] 15.5 ± 0.6 28.4 ± 1.5
Bx GSE [nT] 0.3 ± 0.4 -0.6 ± 0.4
By GSE [nT] -3.9 ± 0.7 -7.0 ± 1.4
Bz GSE [nT] -2.2 ± 0.8 -5.8 ± 1.4
Plasma Beta
1.547 ± 1.597
1.187 ± 1.225
Sound Speed [km/s]
40.54 ± 1.60
52.84 ± 3.09
Alfven Speed [km/s]
25.48 ± 1.73
37.91 ± 2.86

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.791 ± 0.445 0.612 ± 0.576 -0.006 ± 0.006 -0.37 ± 29.94 142.27 ± 41.70
VC -0.980 ± 0.010 0.136 ± 0.044 -0.144 ± 0.143 -8.31 ± 3.38 172.12 ± 2.55
MX1 -0.937 ± 0.056 0.350 ± 0.151 -0.017 ± 0.017 -0.99 ± 3.63 159.53 ± 9.23
MX2 -0.957 ± 0.025 0.292 ± 0.081 -0.005 ± 0.005 -0.31 ± 3.47 163.04 ± 4.87
MX3 -0.965 ± 0.020 0.261 ± 0.074 0.003 ± 0.003 0.17 ± 4.00 164.88 ± 4.41
RH08 -0.987 ± 0.002 0.113 ± 0.012 -0.117 ± 0.117 -6.74 ± 0.67 173.48 ± 0.71
RH09 -0.989 ± 0.010 0.148 ± 0.067 -0.028 ± 0.028 -1.60 ± 4.06 171.48 ± 3.91
RH10 -0.983 ± 0.013 0.183 ± 0.068 0.006 ± 0.006 0.32 ± 4.05 169.47 ± 3.94
Average -0.949 0.262 -0.039 -2.228 164.533
Median -0.965 0.261 -0.006 -0.370 169.471
Deviation 0.066 0.164 0.058 3.350 10.235

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 54.7 ± 5.7 342.9 ± 7.0 1.85 ± 0.06
VC 83.1 ± 4.4 424.9 ± 8.9 1.85 ± 0.06
MX1 68.9 ± 4.6 404.2 ± 8.3 1.85 ± 0.06
MX2 71.5 ± 4.5 411.5 ± 8.5 1.85 ± 0.06
MX3 72.7 ± 4.4 414.6 ± 8.6 1.85 ± 0.06
RH08 83.4 ± 4.3 426.4 ± 9.0 1.85 ± 0.06
RH09 79.2 ± 4.3 424.3 ± 8.9 1.85 ± 0.06
RH10 76.5 ± 4.4 421.2 ± 8.8 1.85 ± 0.06
Average 73.8 408.7 1.85
Median 76.5 421.2 1.85
Deviation 9.3 27.7 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 81.7 ± 1.0 12.9 ± 0.5 14.7 ± 1.0 46.2 ± 0.9 6.34 ± 0.27 1.77 ± 0.04
VC 95.8 ± 1.2 2.6 ± 0.1 3.1 ± 0.2 47.9 ± 0.9 37.01 ± 1.60 2.00 ± 0.05
MX1 93.3 ± 1.2 7.9 ± 0.3 9.2 ± 0.6 47.3 ± 0.9 11.90 ± 0.50 1.97 ± 0.04
MX2 94.0 ± 1.2 6.9 ± 0.3 8.1 ± 0.5 47.4 ± 0.9 13.62 ± 0.58 1.98 ± 0.04
MX3 94.3 ± 1.2 6.4 ± 0.2 7.6 ± 0.5 47.5 ± 0.9 14.66 ± 0.62 1.99 ± 0.04
RH8 95.7 ± 1.2 2.5 ± 0.1 2.9 ± 0.2 47.9 ± 0.9 38.83 ± 1.68 2.00 ± 0.05
RH9 95.1 ± 1.3 4.1 ± 0.2 4.8 ± 0.3 47.8 ± 0.9 23.46 ± 1.01 1.99 ± 0.05
RH10 94.8 ± 1.3 5.0 ± 0.2 5.9 ± 0.4 47.7 ± 0.9 18.81 ± 0.81 1.99 ± 0.05
Average 93.1 6.0 7.0 47.4 20.6 2.0
Median 94.8 6.4 7.6 47.7 18.8 2.0
Deviation 4.7 3.4 3.9 0.6 11.8 0.1

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 44.3 ± 1.4 18.5 ± 1.0 21.9 ± 1.7 62.4 ± 2.8 2.40 ± 0.19 0.71 ± 0.05
VC 52.3 ± 1.7 3.7 ± 0.2 4.6 ± 0.3 65.0 ± 3.0 14.18 ± 1.12 0.81 ± 0.06
MX1 51.2 ± 1.6 11.2 ± 0.6 13.6 ± 1.0 64.1 ± 2.9 4.57 ± 0.35 0.80 ± 0.06
MX2 51.5 ± 1.6 9.9 ± 0.5 12.1 ± 0.9 64.3 ± 2.9 5.23 ± 0.40 0.80 ± 0.06
MX3 51.6 ± 1.6 9.2 ± 0.5 11.3 ± 0.8 64.4 ± 2.9 5.63 ± 0.44 0.80 ± 0.06
RH8 52.2 ± 1.7 3.5 ± 0.2 4.3 ± 0.3 65.0 ± 3.0 14.86 ± 1.18 0.80 ± 0.06
RH9 51.9 ± 1.7 5.8 ± 0.3 7.1 ± 0.5 64.8 ± 2.9 8.99 ± 0.70 0.80 ± 0.06
RH10 51.8 ± 1.7 7.2 ± 0.4 8.8 ± 0.7 64.7 ± 2.9 7.21 ± 0.56 0.80 ± 0.06
Average 50.8 8.6 10.5 64.4 7.9 0.8
Median 51.8 9.2 11.3 64.7 7.2 0.8
Deviation 2.7 4.9 5.7 0.8 4.5 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)

   
 

Section Photo