CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Ace Shock Analysis
Event ID: 19983110736
Observation time: 11/07/1998 311.31701 0736 [UT]

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


General Information (About, Top)

Year 1998
Fractional day of year 311.317014
Arrival time of shock [seconds of day] 27390.0 ± 16.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 0.035
Y GSE location of spacecraft [Re] -0.004
Z GSE location of spacecraft [Re] -0.003
Upstream plasma points selected for analysis 0008
Upstream field points selected for analysis 0038
Downstream plasma points selected for analysis 0011
Downstream field points selected for analysis 0047
Minimum chisq/dof for RH8,RH9,RH10 2.28, 3.44, 3.49
Event added to database
Sat Apr 30 21:43:22 2005
Event last processed
Wed Oct 15 14:43:24 2014
Method selected
RH08
Propagation delay to Earth [minutes]
0.007 ± 0.000

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -416.2 ± 5.9 -460.2 ± 12.8
Vy GSE [km/s] 16.2 ± 6.2 -12.4 ± 5.6
Vz GSE [km/s] -25.2 ± 6.0 -32.4 ± 17.8
Wi [km/s] 41.3 ± 2.3 53.5 ± 5.6
We [km/s] 1305.3 ± 71.8 1691.7 ± 176.4
Ni [n/cc] 6.1 ± 0.6 11.0 ± 1.9
Bx GSE [nT] -3.7 ± 0.6 -3.5 ± 1.4
By GSE [nT] -0.7 ± 1.6 8.8 ± 1.6
Bz GSE [nT] 4.2 ± 0.5 2.6 ± 3.1
Plasma Beta
0.629 ± 0.641
0.629 ± 0.545
Sound Speed [km/s]
53.42 ± 2.93
68.22 ± 6.90
Alfven Speed [km/s]
52.49 ± 3.58
69.43 ± 6.33

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.734 ± 0.097 0.084 ± 0.291 0.674 ± 0.546 42.34 ± 7.77 173.49 ± 22.70
VC -0.816 ± 0.113 -0.550 ± 0.154 -0.175 ± 0.174 -10.10 ± 19.97 213.99 ± 10.51
MX1 -0.950 ± 0.266 -0.295 ± 0.797 0.102 ± 0.102 5.87 ± 56.17 197.28 ± 48.05
MX2 -0.999 ± 0.010 0.035 ± 0.175 -0.036 ± 0.036 -2.06 ± 13.22 178.02 ± 10.07
MX3 -0.952 ± 0.088 0.007 ± 0.175 -0.305 ± 0.295 -17.76 ± 16.46 179.59 ± 10.54
RH08 -0.986 ± 0.003 0.130 ± 0.013 -0.106 ± 0.106 -6.09 ± 1.17 172.48 ± 0.78
RH09 -0.985 ± 0.012 0.130 ± 0.070 -0.117 ± 0.117 -6.74 ± 4.01 172.48 ± 4.07
RH10 -0.985 ± 0.012 0.130 ± 0.070 -0.117 ± 0.117 -6.74 ± 4.01 172.48 ± 4.07
Average -0.926 -0.041 -0.010 -0.159 182.476
Median -0.952 0.084 -0.106 -6.093 178.021
Deviation 0.097 0.249 0.299 18.427 15.218

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 19.4 ± 9.9 340.8 ± 40.0 1.71 ± 0.21
VC 62.8 ± 8.5 456.2 ± 23.6 1.71 ± 0.21
MX1 44.9 ± 6.9 501.8 ± 29.7 1.71 ± 0.21
MX2 53.3 ± 7.4 517.6 ± 24.8 1.71 ± 0.21
MX3 67.8 ± 6.6 504.5 ± 21.4 1.71 ± 0.21
RH08 58.1 ± 8.3 508.8 ± 22.9 1.71 ± 0.21
RH09 58.7 ± 8.2 509.0 ± 22.7 1.71 ± 0.21
RH10 58.7 ± 8.2 509.0 ± 22.7 1.71 ± 0.21
Average 53.0 481.0 1.71
Median 58.7 508.8 1.71
Deviation 15.1 59.7 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 50.4 ± 7.3 43.1 ± 2.3 49.5 ± 3.4 61.3 ± 2.9 1.18 ± 0.22 0.83 ± 0.15
VC 120.7 ± 1.6 17.6 ± 0.9 24.0 ± 1.6 72.8 ± 3.6 6.89 ± 0.36 1.66 ± 0.08
MX1 113.5 ± 4.4 28.6 ± 1.5 37.2 ± 2.5 69.3 ± 3.4 3.98 ± 0.31 1.64 ± 0.12
MX2 100.3 ± 6.0 23.5 ± 1.2 31.4 ± 2.1 71.1 ± 3.5 4.28 ± 0.39 1.41 ± 0.13
MX3 100.3 ± 5.3 14.4 ± 0.7 19.8 ± 1.3 73.5 ± 3.6 7.00 ± 0.54 1.37 ± 0.10
RH8 93.6 ± 6.4 20.5 ± 1.0 27.7 ± 1.9 72.1 ± 3.5 4.58 ± 0.44 1.30 ± 0.12
RH9 94.1 ± 6.4 20.1 ± 1.0 27.2 ± 1.9 72.2 ± 3.5 4.69 ± 0.45 1.31 ± 0.12
RH10 94.1 ± 6.4 20.1 ± 1.0 27.2 ± 1.9 72.2 ± 3.5 4.69 ± 0.45 1.31 ± 0.12
Average 95.9 23.5 30.5 70.6 4.7 1.4
Median 100.3 20.5 27.7 72.2 4.7 1.4
Deviation 20.9 8.9 9.2 3.9 1.8 0.3

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 25.3 ± 20.1 55.0 ± 2.9 65.5 ± 6.0 80.7 ± 3.0 0.45 ± 0.38 0.32 ± 0.25
VC 68.7 ± 10.9 22.6 ± 0.8 31.7 ± 2.9 95.1 ± 2.3 3.05 ± 0.49 0.72 ± 0.12
MX1 64.7 ± 15.3 36.8 ± 1.4 49.2 ± 4.5 90.5 ± 2.4 1.76 ± 0.42 0.72 ± 0.18
MX2 57.8 ± 12.8 30.2 ± 1.1 41.5 ± 3.8 92.9 ± 2.3 1.91 ± 0.43 0.62 ± 0.15
MX3 57.3 ± 9.8 18.5 ± 0.7 26.2 ± 2.4 96.0 ± 2.3 3.10 ± 0.55 0.60 ± 0.11
RH8 53.9 ± 11.5 26.4 ± 1.0 36.6 ± 3.3 94.1 ± 2.3 2.04 ± 0.44 0.57 ± 0.13
RH9 54.4 ± 11.4 25.9 ± 0.9 36.0 ± 3.3 94.2 ± 2.3 2.10 ± 0.45 0.58 ± 0.13
RH10 54.4 ± 11.4 25.9 ± 0.9 36.0 ± 3.3 94.2 ± 2.3 2.10 ± 0.45 0.58 ± 0.13
Average 54.6 30.1 40.3 92.2 2.1 0.6
Median 57.3 26.4 36.6 94.2 2.1 0.6
Deviation 13.0 11.4 12.2 4.9 0.8 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)

   
 

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