CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Ace Shock Analysis
Event ID: 20012760806
Observation time: 10/03/2001 276.33809 0806 [UT]

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Asymptotic parameters
Shock front normals
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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 276.338090
Arrival time of shock [seconds of day] 29211.0 ± 16.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 0.035
Y GSE location of spacecraft [Re] -0.002
Z GSE location of spacecraft [Re] -0.003
Upstream plasma points selected for analysis 0009
Upstream field points selected for analysis 0036
Downstream plasma points selected for analysis 0008
Downstream field points selected for analysis 0031
Minimum chisq/dof for RH8,RH9,RH10 28.04, 346.59, 352.42
Event added to database
Sat Apr 30 21:52:25 2005
Event last processed
Tue May 3 14:06:27 2005
Method selected
RH08
Propagation delay to Earth [minutes]
0.007 ± 0.000

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -494.2 ± 4.1 -515.6 ± 3.3
Vy GSE [km/s] -1.1 ± 6.3 29.1 ± 3.2
Vz GSE [km/s] 18.2 ± 2.2 18.6 ± 2.1
Wi [km/s] 21.2 ± 1.2 26.6 ± 1.0
We [km/s] 670.1 ± 36.6 842.4 ± 31.4
Ni [n/cc] 4.9 ± 0.9 11.0 ± 0.4
Bx GSE [nT] -3.8 ± 0.3 -3.7 ± 0.2
By GSE [nT] -5.8 ± 0.1 5.3 ± 0.4
Bz GSE [nT] -13.6 ± 0.1 -19.6 ± 0.2
Plasma Beta
0.020 ± 0.019
0.038 ± 0.040
Sound Speed [km/s]
27.36 ± 1.49
34.39 ± 1.28
Alfven Speed [km/s]
151.69 ± 12.11
136.23 ± 3.55

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.252 ± 0.016 -0.459 ± 0.012 -0.852 ± 0.534 -58.44 ± 0.60 241.24 ± 1.98
VC -0.586 ± 0.150 0.810 ± 0.109 0.017 ± 0.017 0.96 ± 4.65 125.90 ± 10.64
MX1 -0.227 ± 0.271 -0.499 ± 0.287 -0.837 ± 0.543 -56.78 ± 19.95 245.52 ± 27.90
MX2 -0.338 ± 0.136 0.478 ± 0.119 0.811 ± 0.553 54.18 ± 7.02 125.24 ± 14.79
MX3 -0.815 ± 0.074 0.292 ± 0.086 0.500 ± 0.453 29.99 ± 8.20 160.28 ± 5.81
RH08 -0.939 ± 0.012 0.192 ± 0.033 0.285 ± 0.277 16.55 ± 2.00 168.47 ± 2.00
RH09 -0.939 ± 0.024 0.209 ± 0.069 0.274 ± 0.267 15.89 ± 4.01 167.47 ± 4.20
RH10 -0.939 ± 0.024 0.209 ± 0.069 0.274 ± 0.267 15.89 ± 4.01 167.47 ± 4.20
Average -0.629 0.154 0.059 2.280 175.197
Median -0.586 0.209 0.274 15.887 167.465
Deviation 0.319 0.441 0.602 40.021 45.700

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 5.1 ± 0.5 93.1 ± 3.8 2.37 ± 0.34
VC 79.8 ± 0.5 356.6 ± 11.5 2.37 ± 0.34
MX1 7.6 ± 0.4 78.2 ± 3.8 2.37 ± 0.34
MX2 35.0 ± 0.9 220.2 ± 8.0 2.37 ± 0.34
MX3 69.4 ± 1.0 458.6 ± 12.1 2.37 ± 0.34
RH08 84.7 ± 1.0 516.5 ± 12.8 2.37 ± 0.34
RH09 84.9 ± 1.0 516.9 ± 12.9 2.37 ± 0.34
RH10 84.9 ± 1.0 516.9 ± 12.9 2.37 ± 0.34
Average 56.4 344.6 2.37
Median 79.8 458.6 2.37
Deviation 35.1 189.6 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC -16.3 ± 2.6 27.2 ± 1.5 151.1 ± 12.1 151.7 ± 12.1 -0.60 ± 0.10 -0.11 ± 0.01
VC 67.4 ± 3.8 4.8 ± 0.2 26.8 ± 2.1 154.1 ± 11.9 14.23 ± 1.15 0.44 ± 0.02
MX1 -19.3 ± 2.7 27.1 ± 1.5 150.4 ± 12.0 151.7 ± 12.1 -0.72 ± 0.11 -0.13 ± 0.01
MX2 39.1 ± 1.7 22.3 ± 1.2 124.3 ± 9.9 152.5 ± 12.0 1.76 ± 0.12 0.26 ± 0.02
MX3 46.9 ± 2.9 9.5 ± 0.5 53.4 ± 4.3 153.9 ± 11.9 4.95 ± 0.39 0.31 ± 0.04
RH8 47.4 ± 3.4 2.5 ± 0.1 13.9 ± 1.1 154.1 ± 11.9 19.27 ± 1.69 0.31 ± 0.04
RH9 48.2 ± 3.4 2.4 ± 0.1 13.4 ± 1.1 154.1 ± 11.9 20.32 ± 1.74 0.32 ± 0.04
RH10 48.2 ± 3.4 2.4 ± 0.1 13.4 ± 1.1 154.1 ± 11.9 20.32 ± 1.74 0.32 ± 0.04
Average 32.7 12.3 68.3 153.3 9.9 0.2
Median 47.4 9.5 53.4 154.1 14.2 0.3
Deviation 32.2 11.3 62.9 1.1 9.5 0.2

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC -7.5 ± 2.1 34.2 ± 1.3 135.7 ± 3.5 136.3 ± 3.5 -0.22 ± 0.07 -0.05 ± 0.02
VC 30.4 ± 4.2 5.9 ± 0.2 24.0 ± 0.6 140.4 ± 3.4 5.17 ± 0.75 0.22 ± 0.03
MX1 -8.8 ± 2.1 34.1 ± 1.3 135.0 ± 3.5 136.3 ± 3.5 -0.26 ± 0.07 -0.06 ± 0.02
MX2 17.1 ± 2.5 27.9 ± 1.0 111.6 ± 2.9 137.7 ± 3.5 0.62 ± 0.11 0.12 ± 0.02
MX3 20.3 ± 3.2 11.8 ± 0.4 48.0 ± 1.3 140.0 ± 3.4 1.73 ± 0.29 0.15 ± 0.03
RH8 21.4 ± 3.4 3.1 ± 0.1 12.5 ± 0.3 140.5 ± 3.4 7.01 ± 1.15 0.15 ± 0.03
RH9 21.6 ± 3.4 2.9 ± 0.1 12.0 ± 0.3 140.5 ± 3.4 7.36 ± 1.21 0.15 ± 0.03
RH10 21.6 ± 3.4 2.9 ± 0.1 12.0 ± 0.3 140.5 ± 3.4 7.36 ± 1.21 0.15 ± 0.03
Average 14.5 15.4 61.4 139.0 3.6 0.1
Median 21.4 11.8 48.0 140.4 5.2 0.2
Deviation 14.5 14.3 56.4 1.9 3.5 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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