CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Ace Shock Analysis
Event ID: 20020791305
Observation time: 03/20/2002 79.54544 1305 [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 2002
Fractional day of year 79.545440
Arrival time of shock [seconds of day] 47126.0 ± 32.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 0.035
Y GSE location of spacecraft [Re] -0.003
Z GSE location of spacecraft [Re] -0.002
Upstream plasma points selected for analysis 0009
Upstream field points selected for analysis 0042
Downstream plasma points selected for analysis 0011
Downstream field points selected for analysis 0043
Minimum chisq/dof for RH8,RH9,RH10 67.10, 77.05, 82.86
Event added to database
Sun May 1 22:02:57 2005
Event last processed
Tue May 3 14:16:16 2005
Method selected
RH08
Propagation delay to Earth [minutes]
0.003 ± 0.001

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -414.2 ± 4.4 -573.2 ± 8.8
Vy GSE [km/s] -23.5 ± 4.6 89.4 ± 7.2
Vz GSE [km/s] -83.0 ± 21.7 86.6 ± 20.3
Wi [km/s] 35.3 ± 5.9 73.1 ± 2.9
We [km/s] 1115.5 ± 187.2 2310.1 ± 92.7
Ni [n/cc] 0.34678 ± 0.05075 0.59735 ± 0.04287
Bx GSE [nT] 6.6 ± 0.2 6.6 ± 0.4
By GSE [nT] 10.9 ± 0.1 19.3 ± 0.2
Bz GSE [nT] 0.5 ± 0.4 -2.9 ± 0.6
Plasma Beta
0.006 ± 0.006
0.016 ± 0.017
Sound Speed [km/s]
45.54 ± 7.64
94.31 ± 3.78
Alfven Speed [km/s]
474.68 ± 35.80
582.32 ± 20.80

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.826 ± 0.048 -0.209 ± 0.081 -0.523 ± 0.469 -31.56 ± 4.91 194.22 ± 5.60
VC -0.618 ± 0.052 0.439 ± 0.045 0.652 ± 0.538 40.69 ± 5.13 144.61 ± 2.80
MX1 -0.717 ± 0.063 0.272 ± 0.072 0.642 ± 0.534 39.92 ± 5.43 159.22 ± 5.52
MX2 -0.678 ± 0.061 0.286 ± 0.070 0.678 ± 0.548 42.66 ± 5.04 157.15 ± 5.54
MX3 -0.631 ± 0.059 0.299 ± 0.064 0.716 ± 0.557 45.72 ± 4.54 154.63 ± 5.42
RH08 -0.520 ± 0.029 0.135 ± 0.020 0.844 ± 0.539 57.52 ± 2.00 165.46 ± 2.00
RH09 -0.555 ± 0.060 0.134 ± 0.052 0.821 ± 0.550 55.21 ± 4.22 166.46 ± 5.18
RH10 -0.587 ± 0.058 0.131 ± 0.061 0.799 ± 0.557 53.02 ± 4.12 167.47 ± 5.88
Average -0.641 0.186 0.578 37.897 163.652
Median -0.618 0.272 0.716 45.723 165.460
Deviation 0.098 0.192 0.452 28.867 14.472

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 51.1 ± 1.6 445.2 ± 49.6 1.77 ± 0.35
VC 85.3 ± 1.5 820.8 ± 144.6 1.77 ± 0.35
MX1 83.5 ± 1.5 852.3 ± 142.8 1.77 ± 0.35
MX2 85.5 ± 1.5 838.2 ± 143.0 1.77 ± 0.35
MX3 87.6 ± 1.6 814.2 ± 142.7 1.77 ± 0.35
RH08 83.1 ± 1.7 723.3 ± 133.5 1.77 ± 0.35
RH09 82.0 ± 1.7 744.9 ± 134.7 1.77 ± 0.35
RH10 80.8 ± 1.7 762.7 ± 135.5 1.77 ± 0.35
Average 79.9 750.2 1.77
Median 83.5 814.2 1.77
Deviation 11.8 131.6 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 54.7 ± 10.9 28.5 ± 4.7 297.8 ± 22.5 476.1 ± 35.3 1.93 ± 0.33 0.12 ± 0.03
VC 629.2 ± 15.0 3.7 ± 0.6 38.8 ± 2.9 476.9 ± 35.1 174.50 ± 31.12 1.32 ± 0.09
MX1 614.9 ± 14.9 5.1 ± 0.8 53.5 ± 4.0 476.9 ± 35.1 123.67 ± 22.10 1.29 ± 0.08
MX2 620.5 ± 15.6 3.6 ± 0.6 37.6 ± 2.8 476.9 ± 35.1 177.29 ± 31.80 1.31 ± 0.09
MX3 619.3 ± 16.3 1.9 ± 0.3 19.9 ± 1.5 477.0 ± 35.0 334.31 ± 60.29 1.30 ± 0.09
RH8 581.2 ± 18.9 5.4 ± 0.9 56.8 ± 4.3 476.9 ± 35.1 110.08 ± 20.38 1.22 ± 0.08
RH9 586.4 ± 18.5 6.3 ± 1.0 66.3 ± 5.0 476.9 ± 35.1 95.13 ± 17.54 1.23 ± 0.08
RH10 588.9 ± 18.0 7.3 ± 1.2 76.0 ± 5.7 476.9 ± 35.1 83.42 ± 15.33 1.24 ± 0.08
Average 536.9 7.7 80.8 476.8 137.5 1.1
Median 614.9 5.4 56.8 476.9 123.7 1.3
Deviation 195.7 8.6 89.4 0.3 96.9 0.4

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 35.8 ± 17.9 58.7 ± 2.3 365.4 ± 13.1 587.0 ± 20.5 0.62 ± 0.31 0.06 ± 0.03
VC 370.8 ± 11.7 7.6 ± 0.3 47.6 ± 1.7 589.9 ± 20.3 48.80 ± 2.09 0.63 ± 0.02
MX1 361.4 ± 10.2 10.5 ± 0.4 65.6 ± 2.3 589.8 ± 20.3 34.49 ± 1.43 0.61 ± 0.02
MX2 365.6 ± 11.1 7.4 ± 0.3 46.2 ± 1.6 589.9 ± 20.3 49.57 ± 2.08 0.62 ± 0.02
MX3 363.8 ± 12.1 3.9 ± 0.2 24.4 ± 0.9 589.9 ± 20.3 93.19 ± 3.99 0.62 ± 0.02
RH8 340.2 ± 14.5 11.1 ± 0.4 69.7 ± 2.5 589.8 ± 20.3 30.55 ± 1.41 0.58 ± 0.02
RH9 343.9 ± 13.8 13.0 ± 0.5 81.4 ± 2.9 589.8 ± 20.3 26.45 ± 1.19 0.58 ± 0.02
RH10 345.3 ± 13.2 14.9 ± 0.6 93.2 ± 3.3 589.7 ± 20.3 23.19 ± 1.02 0.59 ± 0.02
Average 315.8 15.9 99.2 589.5 38.4 0.5
Median 361.4 11.1 69.7 589.8 34.5 0.6
Deviation 113.7 17.6 109.7 1.0 27.0 0.2

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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