CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Ace Shock Analysis
Event ID: 19992072333
Observation time: 07/26/1999 207.98127 2333 [UT]

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Asymptotic parameters
Shock front normals
Key parameters
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 207.981273
Arrival time of shock [seconds of day] 84782.0 ± 16.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 0.039
Y GSE location of spacecraft [Re] 0.004
Z GSE location of spacecraft [Re] 0.003
Upstream plasma points selected for analysis 0009
Upstream field points selected for analysis 0034
Downstream plasma points selected for analysis 0010
Downstream field points selected for analysis 0044
Minimum chisq/dof for RH8,RH9,RH10 3.60, 3.86, 3.94
Event added to database
Sat Apr 30 21:44:21 2005
Event last processed
Wed Oct 15 15:03:43 2014
Method selected
RH08
Propagation delay to Earth [minutes]
0.008 ± 0.000

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -397.1 ± 2.4 -431.1 ± 9.0
Vy GSE [km/s] 11.1 ± 4.5 -11.1 ± 9.5
Vz GSE [km/s] -8.3 ± 4.7 27.5 ± 10.5
Wi [km/s] 36.2 ± 0.8 40.8 ± 1.8
We [km/s] 1145.6 ± 25.2 1291.8 ± 57.7
Ni [n/cc] 2.7 ± 0.1 3.9 ± 0.3
Bx GSE [nT] -3.4 ± 0.2 -2.1 ± 0.8
By GSE [nT] 2.6 ± 0.3 5.5 ± 0.2
Bz GSE [nT] 1.4 ± 0.5 0.4 ± 0.6
Plasma Beta
0.364 ± 0.360
0.401 ± 0.397
Sound Speed [km/s]
46.79 ± 1.04
52.78 ± 2.38
Alfven Speed [km/s]
60.12 ± 1.20
65.25 ± 4.33

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.807 ± 0.099 0.477 ± 0.156 0.347 ± 0.332 20.31 ± 7.51 149.41 ± 10.95
VC -0.659 ± 0.169 -0.376 ± 0.192 0.652 ± 0.539 40.69 ± 13.76 209.71 ± 15.24
MX1 -0.802 ± 0.099 0.468 ± 0.160 0.370 ± 0.352 21.69 ± 6.51 149.73 ± 11.29
MX2 -0.755 ± 0.111 0.468 ± 0.172 0.460 ± 0.424 27.39 ± 4.95 148.21 ± 12.94
MX3 -0.630 ± 0.180 0.463 ± 0.211 0.623 ± 0.526 38.55 ± 12.53 143.66 ± 17.71
RH08 -0.916 ± 0.007 0.399 ± 0.016 -0.039 ± 0.039 -2.24 ± 1.63 156.43 ± 0.98
RH09 -0.909 ± 0.019 0.416 ± 0.041 -0.006 ± 0.006 -0.32 ± 3.98 155.43 ± 2.60
RH10 -0.909 ± 0.020 0.416 ± 0.045 -0.006 ± 0.006 -0.32 ± 4.00 155.43 ± 2.81
Average -0.798 0.342 0.300 18.219 158.502
Median -0.802 0.463 0.370 21.690 155.432
Deviation 0.112 0.291 0.284 17.424 21.151

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 9.7 ± 3.0 413.3 ± 3.2 1.46 ± 0.13
VC 60.5 ± 6.9 429.4 ± 5.2 1.46 ± 0.13
MX1 9.9 ± 3.6 413.4 ± 3.3 1.46 ± 0.13
MX2 11.2 ± 5.8 398.5 ± 3.5 1.46 ± 0.13
MX3 20.2 ± 6.5 357.7 ± 3.8 1.46 ± 0.13
RH08 25.8 ± 5.0 437.6 ± 2.6 1.46 ± 0.13
RH09 23.7 ± 5.0 436.3 ± 2.6 1.46 ± 0.13
RH10 23.7 ± 5.0 436.3 ± 24.2 1.46 ± 0.13
Average 23.1 415.3 1.46
Median 23.7 429.4 1.46
Deviation 16.5 27.2 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 90.5 ± 1.5 45.2 ± 0.9 59.3 ± 1.2 61.3 ± 1.1 2.00 ± 0.05 1.48 ± 0.04
VC 177.4 ± 5.0 18.8 ± 0.3 29.6 ± 0.6 73.8 ± 1.0 9.46 ± 0.36 2.40 ± 0.09
MX1 92.7 ± 1.5 45.1 ± 0.9 59.2 ± 1.2 61.4 ± 1.1 2.05 ± 0.06 1.51 ± 0.04
MX2 97.6 ± 1.7 44.7 ± 0.9 59.0 ± 1.2 61.7 ± 1.1 2.18 ± 0.07 1.58 ± 0.04
MX3 107.8 ± 2.3 41.2 ± 0.7 56.4 ± 1.1 64.1 ± 1.0 2.62 ± 0.09 1.68 ± 0.05
RH8 69.2 ± 1.8 38.5 ± 0.6 54.1 ± 1.1 65.7 ± 1.0 1.79 ± 0.03 1.05 ± 0.03
RH9 70.5 ± 1.7 39.6 ± 0.7 55.1 ± 1.1 65.1 ± 1.0 1.78 ± 0.03 1.08 ± 0.03
RH10 70.5 ± 1.7 39.6 ± 0.7 55.1 ± 1.1 65.1 ± 1.0 1.78 ± 0.03 1.08 ± 0.03
Average 97.0 39.1 53.5 64.8 3.0 1.5
Median 92.7 41.2 56.4 65.1 2.1 1.5
Deviation 35.5 8.7 9.9 4.1 2.6 0.4

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 61.3 ± 5.2 50.6 ± 1.8 64.3 ± 4.3 67.0 ± 3.4 1.21 ± 0.10 0.91 ± 0.08
VC 123.5 ± 9.4 20.8 ± 0.6 32.2 ± 2.1 81.4 ± 2.8 5.94 ± 0.47 1.52 ± 0.13
MX1 62.7 ± 5.3 50.5 ± 1.8 64.3 ± 4.3 67.1 ± 3.4 1.24 ± 0.11 0.93 ± 0.08
MX2 65.9 ± 5.9 50.0 ± 1.8 64.0 ± 4.2 67.5 ± 3.3 1.32 ± 0.12 0.98 ± 0.08
MX3 74.4 ± 7.3 45.8 ± 1.5 61.2 ± 4.1 70.4 ± 3.0 1.62 ± 0.16 1.06 ± 0.08
RH8 48.3 ± 5.2 42.8 ± 1.3 58.8 ± 3.9 72.3 ± 2.9 1.13 ± 0.12 0.67 ± 0.09
RH9 49.1 ± 4.9 44.0 ± 1.4 59.8 ± 4.0 71.6 ± 2.9 1.12 ± 0.11 0.69 ± 0.09
RH10 49.1 ± 4.9 44.0 ± 1.4 59.8 ± 4.0 71.6 ± 2.9 1.12 ± 0.11 0.69 ± 0.09
Average 66.8 43.6 58.0 71.1 1.8 0.9
Median 62.7 45.8 61.2 71.6 1.2 0.9
Deviation 24.7 9.7 10.7 4.7 1.7 0.3

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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