CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Wind Shock Analysis
Event ID: 19990592142
Observation time: 02/28/1999 59.90477 2142 [UT]

Wind spacecraft

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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 59.904774
Arrival time of shock [seconds of day] 78172.5 ± 3.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] -49.270
Y GSE location of spacecraft [Re] -58.069
Z GSE location of spacecraft [Re] -0.185
Upstream plasma points selected for analysis 0007
Upstream field points selected for analysis 0254
Downstream plasma points selected for analysis 0009
Downstream field points selected for analysis 0283
Minimum chisq/dof for RH8,RH9,RH10 12.09, 16.73, 17.20
Event added to database
Mon Feb 14 11:07:45 2005
Event last processed
Mon Mar 30 18:32:32 2009
Method selected
RH08
Propagation delay to Earth [minutes]
-11.983 ± 0.418

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -368.7 ± 1.9 -390.7 ± 1.7
Vy GSE [km/s] -5.5 ± 1.7 -3.0 ± 1.1
Vz GSE [km/s] 2.5 ± 2.1 -11.5 ± 1.5
Wi [km/s] 20.1 ± 1.3 23.5 ± 0.6
We [km/s] 637.1 ± 40.0 744.1 ± 19.8
Ni [n/cc] 13.3 ± 0.5 20.2 ± 0.9
Bx GSE [nT] 3.8 ± 0.4 4.5 ± 0.3
By GSE [nT] -8.3 ± 0.3 -10.2 ± 0.2
Bz GSE [nT] -6.4 ± 0.2 -9.4 ± 0.2
Plasma Beta
0.092 ± 0.093
0.111 ± 0.114
Sound Speed [km/s]
26.01 ± 1.63
30.38 ± 0.81
Alfven Speed [km/s]
66.49 ± 1.96
70.69 ± 2.30

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.778 ± 0.443 0.515 ± 0.656 -0.360 ± 0.344 -21.10 ± 17.74 146.47 ± 48.12
VC -0.841 ± 0.046 0.098 ± 0.075 -0.532 ± 0.475 -32.17 ± 4.94 173.36 ± 5.12
MX1 -0.888 ± 0.044 0.270 ± 0.085 -0.372 ± 0.353 -21.81 ± 5.79 163.12 ± 5.41
MX2 -0.893 ± 0.044 0.259 ± 0.086 -0.367 ± 0.350 -21.54 ± 5.84 163.85 ± 5.48
MX3 -0.908 ± 0.044 0.226 ± 0.099 -0.353 ± 0.338 -20.67 ± 6.06 166.00 ± 6.20
RH08 -0.992 ± 0.002 -0.009 ± 0.010 -0.128 ± 0.128 -7.38 ± 0.68 180.50 ± 0.55
RH09 -0.988 ± 0.011 0.026 ± 0.070 -0.151 ± 0.150 -8.68 ± 4.00 178.50 ± 4.03
RH10 -0.990 ± 0.010 0.009 ± 0.070 -0.140 ± 0.139 -8.03 ± 4.02 179.50 ± 4.07
Average -0.910 0.174 -0.300 -17.671 168.912
Median -0.893 0.226 -0.353 -20.669 173.359
Deviation 0.078 0.179 0.145 8.805 11.523

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 63.7 ± 1.0 351.4 ± 11.7 1.52 ± 0.11
VC 86.9 ± 1.5 385.6 ± 12.8 1.52 ± 0.11
MX1 73.1 ± 1.5 400.4 ± 12.6 1.52 ± 0.11
MX2 73.3 ± 1.5 402.4 ± 12.7 1.52 ± 0.11
MX3 74.0 ± 1.6 407.9 ± 12.7 1.52 ± 0.11
RH08 75.0 ± 2.1 434.7 ± 12.3 1.52 ± 0.11
RH09 74.3 ± 2.1 434.2 ± 12.4 1.52 ± 0.11
RH10 74.6 ± 2.1 434.5 ± 12.4 1.52 ± 0.11
Average 74.4 406.4 1.52
Median 74.3 407.9 1.52
Deviation 6.2 29.0 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 68.5 ± 2.2 10.8 ± 0.6 29.4 ± 0.9 70.6 ± 2.0 6.34 ± 0.50 0.97 ± 0.05
VC 77.4 ± 2.3 1.3 ± 0.1 3.6 ± 0.1 71.4 ± 2.1 58.47 ± 4.37 1.09 ± 0.06
MX1 75.3 ± 2.3 7.1 ± 0.4 19.4 ± 0.6 71.1 ± 2.0 10.67 ± 0.81 1.06 ± 0.06
MX2 75.3 ± 2.3 7.0 ± 0.4 19.1 ± 0.6 71.1 ± 2.0 10.81 ± 0.82 1.06 ± 0.06
MX3 75.4 ± 2.2 6.7 ± 0.4 18.4 ± 0.5 71.1 ± 2.0 11.26 ± 0.86 1.06 ± 0.06
RH8 69.4 ± 2.0 6.3 ± 0.4 17.2 ± 0.5 71.1 ± 2.0 11.05 ± 0.84 0.98 ± 0.05
RH9 70.4 ± 2.1 6.6 ± 0.4 18.0 ± 0.5 71.1 ± 2.0 10.72 ± 0.82 0.99 ± 0.05
RH10 69.9 ± 2.0 6.4 ± 0.4 17.6 ± 0.5 71.1 ± 2.0 10.88 ± 0.83 0.98 ± 0.05
Average 72.7 6.5 17.8 71.1 16.3 1.0
Median 75.3 6.7 18.4 71.1 10.9 1.1
Deviation 3.5 2.6 7.0 0.2 17.1 0.0

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 44.9 ± 0.9 12.5 ± 0.2 31.3 ± 1.0 75.9 ± 1.9 3.59 ± 0.10 0.59 ± 0.02
VC 51.2 ± 1.2 1.5 ± 0.0 3.9 ± 0.1 76.9 ± 1.8 33.43 ± 1.15 0.67 ± 0.03
MX1 49.8 ± 1.2 8.2 ± 0.2 20.6 ± 0.7 76.5 ± 1.9 6.10 ± 0.19 0.65 ± 0.03
MX2 49.8 ± 1.2 8.1 ± 0.2 20.3 ± 0.7 76.5 ± 1.9 6.18 ± 0.20 0.65 ± 0.03
MX3 49.8 ± 1.2 7.7 ± 0.1 19.5 ± 0.6 76.6 ± 1.9 6.44 ± 0.21 0.65 ± 0.03
RH8 45.7 ± 1.6 7.3 ± 0.1 18.3 ± 0.6 76.6 ± 1.9 6.30 ± 0.26 0.60 ± 0.03
RH9 46.4 ± 1.5 7.6 ± 0.1 19.2 ± 0.6 76.6 ± 1.9 6.11 ± 0.24 0.61 ± 0.03
RH10 46.1 ± 1.6 7.4 ± 0.1 18.7 ± 0.6 76.6 ± 1.9 6.20 ± 0.25 0.60 ± 0.03
Average 48.0 7.5 19.0 76.5 9.3 0.6
Median 49.8 7.7 19.5 76.6 6.2 0.7
Deviation 2.4 3.0 7.4 0.3 9.8 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 Fri Jun 13 11:06:02 2014
Michael L Stevens (mstevens@cfa.harvard.edu)

   
 

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