CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Ace Shock Analysis
Event ID: 20042122031
Observation time: 07/30/2004 212.85550 2031 [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 2004
Fractional day of year 212.855496
Arrival time of shock [seconds of day] 73914.9 ± 10.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 229.509
Y GSE location of spacecraft [Re] -36.443
Z GSE location of spacecraft [Re] 20.690
Upstream plasma points selected for analysis 0005
Upstream field points selected for analysis 0368
Downstream plasma points selected for analysis 0003
Downstream field points selected for analysis 0201
Minimum chisq/dof for RH8,RH9,RH10 11.48, 20.75, 24.92
Event added to database
Wed Oct 15 10:43:00 2014
Event last processed
Wed Oct 15 11:34:46 2014
Method selected
RH08
Propagation delay to Earth [minutes]
42.152 ± 0.371

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -433.5 ± 2.2 -512.9 ± 7.4
Vy GSE [km/s] 15.7 ± 5.9 50.0 ± 4.7
Vz GSE [km/s] 3.0 ± 6.9 -35.8 ± 5.8
Wi [km/s] 41.8 ± 3.8 57.4 ± 2.9
We [km/s] 1321.5 ± 119.8 1815.9 ± 92.1
Ni [n/cc] 2.6 ± 0.2 5.7 ± 0.3
Bx GSE [nT] 4.4 ± 0.2 4.5 ± 0.4
By GSE [nT] 1.1 ± 0.1 5.4 ± 0.9
Bz GSE [nT] -0.8 ± 0.1 -5.1 ± 0.5
Plasma Beta
0.447 ± 0.427
0.526 ± 0.487
Sound Speed [km/s]
53.95 ± 4.89
74.13 ± 3.76
Alfven Speed [km/s]
63.01 ± 3.68
79.98 ± 5.38

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.999 ± 0.003 -0.035 ± 0.072 -0.039 ± 0.039 -2.26 ± 3.11 182.01 ± 4.13
VC -0.838 ± 0.042 0.360 ± 0.054 -0.411 ± 0.386 -24.24 ± 5.43 156.77 ± 3.54
MX1 -0.999 ± 0.003 -0.030 ± 0.048 -0.042 ± 0.042 -2.43 ± 3.89 181.73 ± 2.73
MX2 -0.999 ± 0.004 -0.016 ± 0.064 -0.040 ± 0.040 -2.27 ± 6.27 180.92 ± 3.67
MX3 -0.999 ± 0.005 -0.007 ± 0.099 -0.038 ± 0.038 -2.17 ± 8.06 180.38 ± 5.65
RH08 -0.998 ± 0.002 -0.061 ± 0.027 -0.017 ± 0.017 -0.96 ± 1.44 183.51 ± 1.52
RH09 -0.991 ± 0.008 -0.131 ± 0.064 -0.006 ± 0.006 -0.32 ± 3.86 187.52 ± 3.68
RH10 -0.991 ± 0.009 -0.131 ± 0.066 -0.006 ± 0.006 -0.32 ± 3.98 187.52 ± 3.83
Average -0.977 -0.006 -0.075 -4.371 180.044
Median -0.998 -0.030 -0.038 -2.173 182.005
Deviation 0.056 0.156 0.137 8.076 9.807

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 17.6 ± 2.5 573.7 ± 3.1 2.24 ± 0.11
VC 50.3 ± 2.5 538.9 ± 3.0 2.24 ± 0.11
MX1 17.9 ± 2.5 574.2 ± 3.1 2.24 ± 0.11
MX2 18.3 ± 2.5 575.4 ± 3.1 2.24 ± 0.11
MX3 18.7 ± 2.5 576.1 ± 3.1 2.24 ± 0.11
RH08 15.6 ± 2.5 570.1 ± 3.0 2.24 ± 0.11
RH09 12.5 ± 2.4 560.8 ± 2.9 2.24 ± 0.11
RH10 12.5 ± 2.4 560.8 ± 10.9 2.24 ± 0.11
Average 20.4 566.3 2.24
Median 17.9 573.7 2.24
Deviation 12.3 12.7 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 141.5 ± 2.4 47.5 ± 2.9 60.1 ± 3.5 68.1 ± 3.3 2.99 ± 0.16 2.08 ± 0.07
VC 171.2 ± 4.5 27.6 ± 1.5 40.2 ± 2.3 78.3 ± 3.9 6.20 ± 0.19 2.19 ± 0.06
MX1 141.9 ± 2.4 47.3 ± 2.9 60.0 ± 3.5 68.2 ± 3.3 3.01 ± 0.16 2.08 ± 0.07
MX2 142.7 ± 2.4 47.1 ± 2.9 59.8 ± 3.5 68.4 ± 3.3 3.04 ± 0.16 2.09 ± 0.07
MX3 143.1 ± 2.4 46.9 ± 2.9 59.7 ± 3.5 68.5 ± 3.3 3.06 ± 0.16 2.09 ± 0.07
RH8 138.5 ± 2.4 48.5 ± 3.0 60.7 ± 3.5 67.4 ± 3.2 2.87 ± 0.16 2.06 ± 0.07
RH9 133.1 ± 2.5 49.9 ± 3.2 61.5 ± 3.6 66.4 ± 3.2 2.68 ± 0.17 2.01 ± 0.07
RH10 133.1 ± 2.5 49.9 ± 3.2 61.5 ± 3.6 66.4 ± 3.2 2.68 ± 0.17 2.01 ± 0.07
Average 143.2 45.6 57.9 69.0 3.3 2.1
Median 141.9 47.5 60.1 68.2 3.0 2.1
Deviation 12.0 7.3 7.2 3.9 1.2 0.1

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 61.9 ± 7.0 63.6 ± 0.5 76.3 ± 5.1 88.8 ± 2.2 0.97 ± 0.12 0.70 ± 0.08
VC 76.5 ± 5.7 36.7 ± 0.4 51.0 ± 3.4 102.8 ± 2.0 2.08 ± 0.16 0.74 ± 0.05
MX1 62.1 ± 7.0 63.3 ± 0.5 76.1 ± 5.1 88.9 ± 2.2 0.98 ± 0.12 0.70 ± 0.08
MX2 62.4 ± 7.1 63.0 ± 0.5 75.9 ± 5.1 89.2 ± 2.2 0.99 ± 0.12 0.70 ± 0.08
MX3 62.6 ± 7.1 62.7 ± 0.5 75.8 ± 5.1 89.3 ± 2.2 1.00 ± 0.12 0.70 ± 0.08
RH8 60.7 ± 7.0 65.0 ± 0.5 77.0 ± 5.2 87.7 ± 2.3 0.94 ± 0.11 0.69 ± 0.08
RH9 58.7 ± 6.7 67.0 ± 0.5 78.1 ± 5.2 86.2 ± 2.4 0.88 ± 0.11 0.68 ± 0.08
RH10 58.7 ± 6.7 67.0 ± 0.5 78.1 ± 5.2 86.2 ± 2.4 0.88 ± 0.11 0.68 ± 0.08
Average 62.9 61.0 73.5 89.9 1.1 0.7
Median 62.1 63.6 76.3 88.9 1.0 0.7
Deviation 5.7 10.0 9.1 5.4 0.4 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)

   
 

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