CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Ace Shock Analysis
Event ID: 20082212252
Observation time: 08/08/2008 221.95293 2252 [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 2008
Fractional day of year 221.952935
Arrival time of shock [seconds of day] 82333.6 ± 60.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 232.771
Y GSE location of spacecraft [Re] 39.705
Z GSE location of spacecraft [Re] 7.961
Upstream plasma points selected for analysis 0012
Upstream field points selected for analysis 0758
Downstream plasma points selected for analysis 0009
Downstream field points selected for analysis 0546
Minimum chisq/dof for RH8,RH9,RH10 6.04, 14.81, 15.17
Event added to database
Wed Oct 15 10:55:24 2014
Event last processed
Wed Oct 15 13:09:23 2014
Method selected
RH08
Propagation delay to Earth [minutes]
60.401 ± 2.292

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -375.1 ± 1.3 -394.5 ± 10.7
Vy GSE [km/s] -7.9 ± 2.0 -22.0 ± 15.6
Vz GSE [km/s] -37.7 ± 4.6 -50.1 ± 11.9
Wi [km/s] 17.8 ± 0.8 28.9 ± 2.0
We [km/s] 563.2 ± 24.2 914.6 ± 61.9
Ni [n/cc] 6.6 ± 0.6 10.7 ± 0.9
Bx GSE [nT] -1.5 ± 0.3 0.7 ± 1.5
By GSE [nT] -7.4 ± 0.8 -7.4 ± 1.7
Bz GSE [nT] 2.7 ± 1.5 10.5 ± 1.2
Plasma Beta
0.066 ± 0.066
0.112 ± 0.110
Sound Speed [km/s]
22.99 ± 0.99
37.34 ± 2.53
Alfven Speed [km/s]
69.73 ± 3.41
87.36 ± 4.91

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.322 ± 0.207 -0.941 ± 0.072 0.101 ± 0.101 5.83 ± 8.95 251.09 ± 12.59
VC -0.796 ± 0.341 -0.507 ± 0.512 -0.331 ± 0.318 -19.33 ± 22.73 212.50 ± 36.50
MX1 -0.485 ± 0.427 -0.874 ± 0.237 0.037 ± 0.037 2.12 ± 12.73 240.95 ± 27.99
MX2 -0.736 ± 0.463 -0.677 ± 0.503 -0.002 ± 0.002 -0.10 ± 10.97 222.63 ± 39.15
MX3 -0.767 ± 0.430 -0.642 ± 0.514 0.014 ± 0.014 0.78 ± 12.82 219.92 ± 38.37
RH08 -0.968 ± 0.005 -0.180 ± 0.022 0.173 ± 0.171 9.97 ± 1.03 190.53 ± 1.30
RH09 -0.848 ± 0.037 -0.424 ± 0.064 0.318 ± 0.307 18.57 ± 3.99 206.57 ± 4.26
RH10 -0.862 ± 0.036 -0.412 ± 0.064 0.296 ± 0.287 17.22 ± 3.98 205.57 ± 4.24
Average -0.723 -0.582 0.076 4.383 218.720
Median -0.767 -0.507 0.101 5.825 219.922
Deviation 0.214 0.253 0.205 11.951 19.684

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 16.4 ± 10.8 180.2 ± 3.0 1.62 ± 0.21
VC 59.7 ± 7.8 392.7 ± 3.7 1.62 ± 0.21
MX1 25.5 ± 9.0 250.0 ± 3.0 1.62 ± 0.21
MX2 41.0 ± 6.0 350.0 ± 3.0 1.62 ± 0.21
MX3 42.9 ± 5.4 360.3 ± 3.0 1.62 ± 0.21
RH08 66.2 ± 1.7 399.5 ± 3.4 1.62 ± 0.21
RH09 49.6 ± 1.7 351.9 ± 2.7 1.62 ± 0.21
RH10 50.7 ± 1.6 359.1 ± 28.7 1.62 ± 0.21
Average 44.0 330.5 1.62
Median 49.6 359.1 1.62
Deviation 16.6 75.8 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 55.6 ± 1.7 22.0 ± 0.9 66.9 ± 3.3 70.1 ± 3.4 2.54 ± 0.17 0.80 ± 0.04
VC 77.7 ± 2.2 11.1 ± 0.4 35.2 ± 1.7 72.6 ± 3.2 6.99 ± 0.39 1.07 ± 0.06
MX1 62.5 ± 1.7 20.5 ± 0.9 63.0 ± 3.1 70.5 ± 3.4 3.05 ± 0.19 0.89 ± 0.05
MX2 68.6 ± 1.6 16.9 ± 0.7 52.6 ± 2.6 71.5 ± 3.3 4.06 ± 0.22 0.96 ± 0.05
MX3 68.1 ± 1.5 16.4 ± 0.7 51.0 ± 2.5 71.6 ± 3.3 4.16 ± 0.23 0.95 ± 0.05
RH8 41.4 ± 1.7 8.9 ± 0.3 28.1 ± 1.4 72.9 ± 3.2 4.69 ± 0.27 0.57 ± 0.03
RH9 42.5 ± 2.0 14.4 ± 0.6 45.2 ± 2.2 72.0 ± 3.3 2.95 ± 0.19 0.59 ± 0.03
RH10 43.8 ± 1.9 14.1 ± 0.6 44.1 ± 2.2 72.1 ± 3.3 3.12 ± 0.20 0.61 ± 0.03
Average 57.5 15.5 48.3 71.6 3.9 0.8
Median 62.5 16.4 51.0 72.0 4.1 0.9
Deviation 13.8 4.4 13.1 1.0 1.4 0.2

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 37.3 ± 11.7 35.5 ± 2.3 83.8 ± 4.7 88.1 ± 4.8 1.05 ± 0.30 0.42 ± 0.14
VC 51.0 ± 10.0 17.6 ± 0.9 44.0 ± 2.5 93.4 ± 4.2 2.88 ± 0.40 0.55 ± 0.12
MX1 41.2 ± 10.7 33.0 ± 2.1 78.9 ± 4.4 89.1 ± 4.7 1.24 ± 0.27 0.46 ± 0.13
MX2 44.7 ± 8.3 27.0 ± 1.5 65.9 ± 3.7 91.1 ± 4.4 1.65 ± 0.21 0.49 ± 0.10
MX3 44.3 ± 7.8 26.1 ± 1.5 64.0 ± 3.6 91.4 ± 4.4 1.69 ± 0.21 0.49 ± 0.10
RH8 22.3 ± 9.2 14.0 ± 0.7 35.2 ± 2.0 94.0 ± 4.2 1.59 ± 0.65 0.24 ± 0.11
RH9 24.1 ± 6.3 22.9 ± 1.3 56.6 ± 3.2 92.3 ± 4.3 1.05 ± 0.26 0.26 ± 0.08
RH10 25.0 ± 6.5 22.3 ± 1.2 55.3 ± 3.1 92.4 ± 4.3 1.12 ± 0.27 0.27 ± 0.08
Average 36.2 24.8 60.5 91.5 1.5 0.4
Median 41.2 26.1 64.0 92.3 1.6 0.5
Deviation 11.0 7.3 16.4 2.0 0.6 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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