CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Wind Shock Analysis
Event ID: 20010981120
Observation time: 04/08/2001 98.47276 1120 [UT]

Wind spacecraft

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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 98.472760
Arrival time of shock [seconds of day] 40846.5 ± 6.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 2.810
Y GSE location of spacecraft [Re] -259.077
Z GSE location of spacecraft [Re] 0.553
Upstream plasma points selected for analysis 0009
Upstream field points selected for analysis 0269
Downstream plasma points selected for analysis 0009
Downstream field points selected for analysis 0287
Minimum chisq/dof for RH8,RH9,RH10 26.91, 35.78, 37.54
Event added to database
Mon Feb 14 11:13:20 2005
Event last processed
Mon Mar 30 20:47:08 2009
Method selected
RH08
Propagation delay to Earth [minutes]
-18.259 ± 1.261

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -495.5 ± 7.9 -652.9 ± 16.8
Vy GSE [km/s] 3.1 ± 3.1 -46.3 ± 6.4
Vz GSE [km/s] -51.1 ± 6.5 -58.1 ± 7.1
Wi [km/s] 45.9 ± 4.7 74.1 ± 6.9
We [km/s] 1451.5 ± 149.7 2344.6 ± 217.5
Ni [n/cc] 4.7 ± 0.5 12.5 ± 1.8
Bx GSE [nT] 2.0 ± 0.6 -6.3 ± 1.3
By GSE [nT] 2.7 ± 1.0 18.0 ± 1.1
Bz GSE [nT] -4.6 ± 1.1 -1.7 ± 1.9
Plasma Beta
0.613 ± 0.637
0.401 ± 0.415
Sound Speed [km/s]
59.26 ± 6.11
95.72 ± 8.88
Alfven Speed [km/s]
59.55 ± 6.59
119.64 ± 10.73

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.426 ± 0.102 -0.393 ± 0.105 0.815 ± 0.552 54.59 ± 6.04 222.69 ± 11.71
VC -0.953 ± 0.011 -0.300 ± 0.035 -0.042 ± 0.042 -2.41 ± 3.09 197.49 ± 2.08
MX1 -0.957 ± 0.194 -0.279 ± 0.631 -0.078 ± 0.078 -4.47 ± 46.16 196.26 ± 37.75
MX2 -0.882 ± 0.035 -0.471 ± 0.066 -0.030 ± 0.030 -1.70 ± 3.53 208.11 ± 4.26
MX3 -0.884 ± 0.032 -0.461 ± 0.061 -0.076 ± 0.076 -4.35 ± 3.36 207.57 ± 3.96
RH08 -0.847 ± 0.005 -0.481 ± 0.008 -0.229 ± 0.225 -13.24 ± 0.55 209.58 ± 0.55
RH09 -0.789 ± 0.043 -0.504 ± 0.060 -0.352 ± 0.337 -20.61 ± 4.04 212.59 ± 4.23
RH10 -0.795 ± 0.043 -0.509 ± 0.061 -0.330 ± 0.317 -19.25 ± 4.00 212.59 ± 4.29
Average -0.817 -0.425 -0.040 -1.430 208.361
Median -0.847 -0.461 -0.076 -4.355 209.582
Deviation 0.170 0.091 0.369 23.850 8.516

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 13.4 ± 7.7 296.6 ± 18.2 2.70 ± 0.42
VC 64.2 ± 3.1 738.0 ± 31.6 2.70 ± 0.42
MX1 66.5 ± 3.1 742.3 ± 31.5 2.70 ± 0.42
MX2 59.9 ± 4.3 696.4 ± 31.9 2.70 ± 0.42
MX3 62.5 ± 4.4 700.4 ± 31.9 2.70 ± 0.42
RH08 70.1 ± 5.4 684.5 ± 31.6 2.70 ± 0.42
RH09 76.4 ± 6.3 651.5 ± 30.7 2.70 ± 0.42
RH10 75.1 ± 6.3 655.5 ± 30.9 2.70 ± 0.42
Average 61.0 645.6 2.70
Median 66.5 696.4 2.70
Deviation 20.1 144.9 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 128.4 ± 3.1 51.2 ± 4.2 57.9 ± 6.4 66.8 ± 5.8 2.52 ± 0.16 1.93 ± 0.14
VC 264.6 ± 7.6 18.6 ± 1.5 25.9 ± 2.9 82.1 ± 6.8 14.31 ± 1.37 3.25 ± 0.32
MX1 265.0 ± 7.8 17.0 ± 1.4 23.7 ± 2.6 82.4 ± 6.9 15.72 ± 1.51 3.24 ± 0.32
MX2 259.5 ± 7.0 21.7 ± 1.8 29.9 ± 3.3 81.3 ± 6.8 12.04 ± 1.14 3.21 ± 0.31
MX3 260.0 ± 7.2 19.9 ± 1.6 27.5 ± 3.0 81.8 ± 6.8 13.18 ± 1.26 3.20 ± 0.31
RH8 254.9 ± 7.8 14.4 ± 1.2 20.2 ± 2.2 82.9 ± 6.9 17.82 ± 1.76 3.10 ± 0.31
RH9 244.4 ± 8.1 9.9 ± 0.8 14.0 ± 1.6 83.6 ± 7.0 24.82 ± 2.52 2.95 ± 0.30
RH10 246.1 ± 8.0 10.9 ± 0.9 15.3 ± 1.7 83.5 ± 7.0 22.84 ± 2.31 2.97 ± 0.31
Average 240.4 20.4 26.8 80.6 15.4 3.0
Median 259.5 18.6 25.9 82.4 15.7 3.2
Deviation 45.9 13.1 13.8 5.6 6.9 0.4

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 47.6 ± 10.9 88.7 ± 6.1 116.4 ± 10.4 125.2 ± 9.0 0.54 ± 0.13 0.38 ± 0.09
VC 99.5 ± 17.4 33.0 ± 1.4 52.0 ± 4.7 150.1 ± 6.8 3.02 ± 0.53 0.66 ± 0.11
MX1 100.0 ± 17.4 30.1 ± 1.3 47.6 ± 4.3 150.7 ± 6.8 3.33 ± 0.58 0.66 ± 0.11
MX2 97.3 ± 17.1 38.4 ± 1.7 60.1 ± 5.4 148.7 ± 6.8 2.53 ± 0.45 0.65 ± 0.11
MX3 97.5 ± 17.0 35.2 ± 1.5 55.3 ± 5.0 149.5 ± 6.8 2.77 ± 0.49 0.65 ± 0.11
RH8 96.2 ± 16.5 25.5 ± 1.1 40.7 ± 3.6 151.5 ± 6.8 3.77 ± 0.65 0.63 ± 0.10
RH9 92.9 ± 15.8 17.6 ± 0.7 28.2 ± 2.5 152.6 ± 6.8 5.28 ± 0.90 0.61 ± 0.10
RH10 93.4 ± 15.9 19.3 ± 0.8 30.8 ± 2.8 152.4 ± 6.8 4.86 ± 0.83 0.61 ± 0.10
Average 90.6 36.0 53.9 147.6 3.3 0.6
Median 97.3 33.0 52.0 150.7 3.3 0.7
Deviation 17.5 22.5 27.6 9.2 1.5 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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