CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Ace Shock Analysis
Event ID: 19990690040
Observation time: 03/10/1999 69.02795 0040 [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 69.027951
Arrival time of shock [seconds of day] 2415.0 ± 16.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 0.038
Y GSE location of spacecraft [Re] -0.004
Z GSE location of spacecraft [Re] 0.003
Upstream plasma points selected for analysis 0011
Upstream field points selected for analysis 0045
Downstream plasma points selected for analysis 0010
Downstream field points selected for analysis 0044
Minimum chisq/dof for RH8,RH9,RH10 8.99, 12.23, 12.52
Event added to database
Sat Apr 30 21:43:52 2005
Event last processed
Wed Oct 15 14:55:43 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] -411.2 ± 2.1 -459.2 ± 3.4
Vy GSE [km/s] -7.8 ± 2.3 -1.7 ± 4.5
Vz GSE [km/s] -23.6 ± 2.3 -2.2 ± 5.8
Wi [km/s] 31.3 ± 0.7 37.6 ± 2.4
We [km/s] 989.3 ± 21.4 1189.2 ± 76.4
Ni [n/cc] 10.3 ± 0.4 15.9 ± 1.4
Bx GSE [nT] -0.6 ± 0.6 -2.3 ± 1.5
By GSE [nT] -3.0 ± 0.4 -7.3 ± 2.1
Bz GSE [nT] -3.7 ± 0.3 -2.6 ± 2.4
Plasma Beta
0.959 ± 0.947
0.641 ± 0.593
Sound Speed [km/s]
40.35 ± 0.86
48.53 ± 3.13
Alfven Speed [km/s]
32.00 ± 1.04
47.34 ± 3.77

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.943 ± 0.349 0.261 ± 1.018 0.207 ± 0.204 11.93 ± 59.45 164.56 ± 61.75
VC -0.910 ± 0.048 0.109 ± 0.089 0.399 ± 0.376 23.51 ± 6.79 173.20 ± 5.57
MX1 -0.783 ± 0.332 0.360 ± 0.517 0.507 ± 0.458 30.44 ± 29.57 155.30 ± 36.97
MX2 -0.754 ± 0.160 0.389 ± 0.243 0.530 ± 0.474 31.99 ± 12.47 152.73 ± 18.05
MX3 -0.796 ± 0.159 0.359 ± 0.248 0.488 ± 0.445 29.21 ± 14.84 155.73 ± 17.44
RH08 -0.993 ± 0.001 -0.009 ± 0.009 0.117 ± 0.117 6.74 ± 0.68 180.50 ± 0.52
RH09 0.054 ± 0.048 0.456 ± 0.061 0.888 ± 0.502 62.66 ± 3.94 83.23 ± 5.98
RH10 -0.315 ± 0.067 -0.413 ± 0.064 -0.855 ± 0.532 -58.73 ± 4.00 232.65 ± 7.79
Average -0.680 0.189 0.285 17.220 162.235
Median -0.783 0.359 0.488 29.209 164.556
Deviation 0.363 0.288 0.516 34.944 41.126

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 78.9 ± 7.4 539.0 ± 3.1 1.52 ± 0.14
VC 75.4 ± 6.9 522.8 ± 3.4 1.52 ± 0.14
MX1 59.5 ± 7.2 460.5 ± 3.2 1.52 ± 0.14
MX2 56.9 ± 7.3 445.8 ± 3.1 1.52 ± 0.14
MX3 60.7 ± 7.3 466.3 ± 3.2 1.52 ± 0.14
RH08 87.3 ± 7.1 558.5 ± 3.1 1.52 ± 0.14
RH09 14.5 ± 4.1 11.1 ± 1.6 1.52 ± 0.14
RH10 17.0 ± 7.9 134.8 ± 11.6 1.52 ± 0.14
Average 56.3 392.3 1.52
Median 60.7 466.3 1.52
Deviation 27.1 203.8 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 158.2 ± 2.1 4.9 ± 0.1 6.2 ± 0.2 51.3 ± 0.5 32.61 ± 0.40 3.08 ± 0.03
VC 158.8 ± 1.8 6.4 ± 0.1 8.1 ± 0.3 51.1 ± 0.5 24.87 ± 0.38 3.11 ± 0.03
MX1 153.3 ± 1.7 13.1 ± 0.2 16.2 ± 0.5 49.8 ± 0.5 11.67 ± 0.17 3.08 ± 0.03
MX2 151.5 ± 1.7 14.2 ± 0.2 17.5 ± 0.6 49.5 ± 0.5 10.64 ± 0.16 3.06 ± 0.03
MX3 153.5 ± 1.7 12.7 ± 0.2 15.7 ± 0.5 49.9 ± 0.5 12.12 ± 0.17 3.07 ± 0.03
RH8 152.9 ± 2.0 1.2 ± 0.0 1.5 ± 0.0 51.5 ± 0.5 128.45 ± 1.77 2.97 ± 0.03
RH9 58.1 ± 1.2 29.7 ± 0.7 31.0 ± 1.0 42.1 ± 0.6 1.96 ± 0.08 1.38 ± 0.03
RH10 -18.2 ± 1.5 29.0 ± 0.7 30.6 ± 1.0 42.6 ± 0.6 -0.63 ± 0.06 -0.43 ± 0.03
Average 121.0 13.9 15.8 48.5 27.7 2.4
Median 153.3 13.1 16.2 49.9 12.1 3.1
Deviation 65.7 10.6 10.7 3.9 42.2 1.3

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 107.0 ± 3.7 6.5 ± 0.4 9.1 ± 0.7 67.5 ± 3.9 16.39 ± 1.23 1.59 ± 0.11
VC 105.9 ± 3.5 8.6 ± 0.5 12.0 ± 1.0 67.3 ± 3.9 12.34 ± 0.98 1.58 ± 0.12
MX1 102.8 ± 3.7 17.8 ± 1.1 24.0 ± 1.9 65.5 ± 3.8 5.81 ± 0.46 1.57 ± 0.12
MX2 101.7 ± 3.7 19.3 ± 1.2 25.9 ± 2.1 65.1 ± 3.8 5.30 ± 0.42 1.57 ± 0.12
MX3 102.8 ± 3.7 17.1 ± 1.0 23.2 ± 1.8 65.7 ± 3.8 6.03 ± 0.47 1.57 ± 0.11
RH8 102.7 ± 3.2 1.6 ± 0.1 2.2 ± 0.2 67.8 ± 3.9 64.21 ± 4.86 1.52 ± 0.11
RH9 39.1 ± 3.7 41.2 ± 2.6 45.8 ± 3.6 53.9 ± 3.0 0.96 ± 0.13 0.73 ± 0.09
RH10 -12.8 ± 3.7 40.1 ± 2.5 45.3 ± 3.6 54.8 ± 3.1 -0.32 ± 0.10 -0.24 ± 0.07
Average 81.2 19.0 23.4 63.4 13.8 1.2
Median 102.8 17.8 24.0 65.7 6.0 1.6
Deviation 44.2 14.7 15.9 5.7 21.1 0.7

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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