CfA Interplanetary Shock Database - Individual Event Detail
 

Database: dscovr_data
Event ID: 20162012254
Observation time: 07/19/2016 201.95486 2254 [UT]

DSCOVR spacecraft

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Asymptotic parameters
Shock front normals
Key parameters
Wave speed and Mach numbers
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Selected
Simple methods
Rankine
Individual equations
Shock speed
Theta Bn
Mach numbers


General Information (About, Top)

Year 2016
Fractional day of year 201.954861
Arrival time of shock [seconds of day] 82500.0 ± 60.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 242.046
Y GSE location of spacecraft [Re] 35.759
Z GSE location of spacecraft [Re] -24.510
Upstream plasma points selected for analysis 0009
Upstream field points selected for analysis 0009
Downstream plasma points selected for analysis 0007
Downstream field points selected for analysis 0007
Minimum chisq/dof for RH8,RH9,RH10 7.96, 54.23, 71.06
Event added to database
Thu Jun 8 17:35:43 2017
Event last processed
Thu Jun 8 17:42:37 2017
Method selected
RH08
Propagation delay to Earth [minutes]
49.055 ± 2.530

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -318.1 ± 1.7 -430.4 ± 5.7
Vy GSE [km/s] -34.7 ± 1.3 -65.9 ± 3.3
Vz GSE [km/s] 15.0 ± 1.0 53.4 ± 4.4
Wi [km/s] 19.3 ± 0.1 45.1 ± 4.1
We [km/s] 610.5 ± 3.8 1426.5 ± 130.6
Ni [n/cc] 11.6 ± 0.3 30.1 ± 1.5
Bx GSE [nT] -1.6 ± 0.1 -4.6 ± 0.9
By GSE [nT] 4.2 ± 0.4 15.7 ± 0.8
Bz GSE [nT] -0.4 ± 0.4 -5.3 ± 2.3
Plasma Beta
0.449 ± 0.422
0.432 ± 0.415
Sound Speed [km/s]
24.93 ± 0.16
58.24 ± 5.33
Alfven Speed [km/s]
29.27 ± 3.22
68.91 ± 3.81

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.608 ± 0.249 0.266 ± 0.283 0.748 ± 0.561 48.45 ± 18.42 156.40 ± 25.08
VC -0.915 ± 0.014 -0.254 ± 0.025 0.314 ± 0.303 18.30 ± 2.36 195.52 ± 1.53
MX1 -0.948 ± 0.013 -0.118 ± 0.063 0.295 ± 0.286 17.16 ± 2.10 187.09 ± 3.84
MX2 -0.953 ± 0.014 -0.130 ± 0.061 0.274 ± 0.267 15.89 ± 2.49 187.80 ± 3.66
MX3 -0.954 ± 0.015 -0.134 ± 0.060 0.267 ± 0.261 15.50 ± 2.64 188.00 ± 3.62
RH08 -0.923 ± 0.013 -0.257 ± 0.032 0.285 ± 0.277 16.55 ± 2.00 195.54 ± 2.00
RH09 -0.610 ± 0.055 -0.375 ± 0.066 -0.698 ± 0.553 -44.29 ± 3.89 211.59 ± 5.73
RH10 -0.355 ± 0.065 -0.403 ± 0.063 -0.844 ± 0.539 -57.52 ± 3.95 228.64 ± 7.39
Average -0.783 -0.176 0.080 3.755 193.823
Median -0.915 -0.134 0.285 16.554 195.524
Deviation 0.229 0.209 0.550 35.659 20.870

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 66.4 ± 5.3 341.3 ± 1.2 2.58 ± 0.19
VC 86.0 ± 3.5 505.5 ± 1.1 2.58 ± 0.19
MX1 78.0 ± 3.5 509.8 ± 1.1 2.58 ± 0.19
MX2 78.4 ± 3.4 511.3 ± 1.1 2.58 ± 0.19
MX3 78.6 ± 3.3 511.7 ± 1.1 2.58 ± 0.19
RH08 85.9 ± 3.3 507.5 ± 1.1 2.58 ± 0.19
RH09 86.4 ± 2.7 283.8 ± 1.0 2.58 ± 0.19
RH10 80.3 ± 3.8 150.8 ± 8.4 2.58 ± 0.19
Average 80.0 415.2 2.58
Median 80.3 507.5 2.58
Deviation 6.6 139.8 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 146.0 ± 1.6 7.7 ± 0.4 11.7 ± 1.3 37.7 ± 2.5 18.93 ± 1.08 3.89 ± 0.29
VC 201.0 ± 1.4 1.3 ± 0.1 2.0 ± 0.2 38.5 ± 2.5 154.58 ± 8.37 5.25 ± 0.37
MX1 199.7 ± 1.6 4.0 ± 0.2 6.1 ± 0.7 38.3 ± 2.5 50.46 ± 2.77 5.24 ± 0.37
MX2 199.6 ± 1.6 3.8 ± 0.2 5.9 ± 0.6 38.3 ± 2.5 52.50 ± 2.88 5.23 ± 0.37
MX3 199.5 ± 1.6 3.8 ± 0.2 5.8 ± 0.6 38.3 ± 2.5 53.10 ± 2.91 5.23 ± 0.37
RH8 200.6 ± 1.4 1.4 ± 0.1 2.1 ± 0.2 38.5 ± 2.5 147.43 ± 7.99 5.24 ± 0.37
RH9 87.3 ± 1.4 1.2 ± 0.1 1.9 ± 0.2 38.5 ± 2.5 72.92 ± 3.94 2.28 ± 0.16
RH10 36.6 ± 1.3 3.2 ± 0.1 4.9 ± 0.5 38.4 ± 2.5 11.42 ± 0.66 0.96 ± 0.07
Average 158.8 3.3 5.1 38.3 70.2 4.2
Median 199.6 3.8 5.8 38.4 53.1 5.2
Deviation 64.1 2.2 3.3 0.3 53.7 1.7

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 57.2 ± 4.4 18.1 ± 1.2 27.6 ± 1.5 88.5 ± 5.3 3.16 ± 0.29 0.65 ± 0.06
VC 78.3 ± 5.2 3.1 ± 0.2 4.7 ± 0.3 90.2 ± 5.4 25.73 ± 3.01 0.87 ± 0.10
MX1 78.2 ± 5.3 9.3 ± 0.6 14.4 ± 0.8 89.8 ± 5.4 8.44 ± 0.98 0.87 ± 0.10
MX2 78.0 ± 5.3 8.9 ± 0.6 13.8 ± 0.8 89.8 ± 5.4 8.77 ± 1.03 0.87 ± 0.10
MX3 77.9 ± 5.3 8.8 ± 0.6 13.7 ± 0.8 89.9 ± 5.4 8.86 ± 1.04 0.87 ± 0.10
RH8 77.9 ± 5.3 3.2 ± 0.2 5.0 ± 0.3 90.2 ± 5.4 24.48 ± 2.90 0.87 ± 0.10
RH9 34.0 ± 6.3 2.8 ± 0.2 4.4 ± 0.2 90.2 ± 5.4 12.21 ± 3.01 0.38 ± 0.09
RH10 16.6 ± 6.0 7.5 ± 0.5 11.7 ± 0.6 90.0 ± 5.4 2.24 ± 0.94 0.19 ± 0.08
Average 62.3 7.7 11.9 89.8 11.7 0.7
Median 77.9 8.8 13.7 90.0 8.9 0.9
Deviation 24.4 5.1 7.7 0.6 8.9 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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