MIT/CSR Interplanetary Shocks

MIT Space Plasma Group
Interplanetary Shock Analysis Pages

Database: Wind Shock Analysis
Event ID: 19982180716
08/06/1998 218.30283 0716 [UT]

Site	Data tables	Selection	Normals	Parameters
Previous event Next event Yearly list Main page Help	General information Asymptotic parameters Shock front normals Key parameters Wave speed and Mach numbers	Survey Selected	Simple methods Rankine Individual equations	Shock speed Theta Bn Mach numbers

General Information (About, Top)

Year 1998

Fractional day of year 218.302830

Arrival time of shock [seconds of day] 26164.5 ± 60.0

Shock type FF

Electron data availability 0

X GSE location of spacecraft [Re] 92.107

Y GSE location of spacecraft [Re] 8.716

Z GSE location of spacecraft [Re] -3.010

Upstream plasma points selected for analysis 0011

Upstream field points selected for analysis 0344

Downstream plasma points selected for analysis 0011

Downstream field points selected for analysis 0335

Minimum chisq/dof for RH8,RH9,RH10 6.92, 11.52, 11.68

Event added to database
Mon Feb 14 11:06:45 2005

Event last processed
Sun Mar 13 10:47:40 2005

Method selected
RH08

Propagation delay to Earth [minutes]
20.165 ± 2.196

Asymptotic plasma parameters (About, Top)

Parameter Upstream Downstream

Vx GSE [km/s] -371.7 ± 1.7 -424.6 ± 6.4

Vy GSE [km/s] -20.1 ± 2.9 -16.2 ± 4.5

Vz GSE [km/s] -2.8 ± 3.4 18.0 ± 6.8

Wi [km/s] 17.3 ± 1.6 22.8 ± 2.8

We [km/s] 546.4 ± 49.9 721.0 ± 87.9

Ni [n/cc] 10.7 ± 1.0 19.7 ± 2.7

Bx GSE [nT] -0.4 ± 0.7 -2.1 ± 0.8

By GSE [nT] 8.4 ± 0.4 14.6 ± 0.8

Bz GSE [nT] -6.0 ± 0.5 -10.4 ± 0.6

Plasma Beta
0.064 ± 0.066
0.070 ± 0.074

Sound Speed [km/s]
22.31 ± 2.04
29.44 ± 3.59

Alfven Speed [km/s]
69.29 ± 4.17
89.58 ± 9.40

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

Method Nx Ny Nz Theta [degrees] Phi [degrees]

MC -0.981 ± 0.116 -0.115 ± 0.680 0.157 ± 0.156 9.04 ± 30.89 186.69 ± 39.73

VC -0.931 ± 0.041 0.066 ± 0.084 0.358 ± 0.342 20.97 ± 6.50 175.94 ± 5.18

MX1 -0.926 ± 0.055 0.027 ± 0.111 0.377 ± 0.358 22.16 ± 8.28 178.31 ± 6.86

MX2 -0.925 ± 0.055 0.028 ± 0.107 0.378 ± 0.359 22.22 ± 8.39 178.27 ± 6.64

MX3 -0.925 ± 0.057 0.029 ± 0.103 0.379 ± 0.360 22.29 ± 8.57 178.23 ± 6.38

RH08 -0.983 ± 0.002 -0.130 ± 0.009 0.128 ± 0.128 7.38 ± 0.54 187.52 ± 0.55

RH09 -0.980 ± 0.014 -0.182 ± 0.068 0.084 ± 0.084 4.81 ± 4.02 190.53 ± 3.99

RH10 -0.980 ± 0.014 -0.182 ± 0.068 0.084 ± 0.084 4.81 ± 4.02 190.53 ± 3.99

Average -0.954 -0.057 0.243 14.209 183.252

Median -0.931 0.027 0.358 20.966 186.693

Deviation 0.029 0.105 0.141 8.352 6.141

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression

MC 81.6 ± 3.6 484.6 ± 50.4 1.85 ± 0.29

VC 83.3 ± 3.1 461.4 ± 55.6 1.85 ± 0.29

MX1 80.8 ± 3.1 460.3 ± 55.2 1.85 ± 0.29

MX2 80.8 ± 3.1 460.1 ± 55.2 1.85 ± 0.29

MX3 80.8 ± 3.1 460.0 ± 55.2 1.85 ± 0.29

RH08 81.9 ± 3.7 485.4 ± 49.6 1.85 ± 0.29

RH09 80.9 ± 3.8 483.7 ± 47.6 1.85 ± 0.29

RH10 80.9 ± 3.8 483.7 ± 47.6 1.85 ± 0.29

Average 81.4 472.4 1.85

Median 80.9 483.7 1.85

Deviation 0.9 12.8 0.00

Upstream wave speeds and mach numbers (About, Top)

Method dV Slow Intermediate Fast Slow
Mach
Fast
Mach

MC 118.1 ± 1.7 3.1 ± 0.2 10.1 ± 0.6 72.8 ± 3.6 38.35 ± 3.36 1.63 ± 0.08

VC 117.5 ± 1.8 2.5 ± 0.2 8.1 ± 0.5 72.8 ± 3.6 47.89 ± 4.23 1.62 ± 0.08

MX1 117.8 ± 1.8 3.4 ± 0.3 11.0 ± 0.7 72.8 ± 3.6 35.08 ± 3.11 1.62 ± 0.08

MX2 117.8 ± 1.8 3.4 ± 0.3 11.0 ± 0.7 72.8 ± 3.6 35.06 ± 3.11 1.62 ± 0.08

MX3 117.8 ± 1.8 3.4 ± 0.3 11.1 ± 0.7 72.8 ± 3.6 35.03 ± 3.11 1.62 ± 0.08

RH8 117.7 ± 1.7 3.0 ± 0.2 9.8 ± 0.6 72.8 ± 3.6 39.46 ± 3.45 1.62 ± 0.08

RH9 116.1 ± 1.8 3.4 ± 0.3 11.0 ± 0.7 72.8 ± 3.6 34.76 ± 3.04 1.60 ± 0.08

RH10 116.1 ± 1.8 3.4 ± 0.3 11.0 ± 0.7 72.8 ± 3.6 34.76 ± 3.04 1.60 ± 0.08

Average 117.3 3.2 10.4 72.8 37.5 1.6

Median 117.8 3.4 11.0 72.8 35.1 1.6

Deviation 0.8 0.3 1.1 0.0 4.6 0.0

Downstream wave speeds and mach numbers (About, Top)

Method dV Slow Intermediate Fast Slow
Mach
Fast
Mach

MC 63.5 ± 6.6 4.1 ± 0.4 13.1 ± 1.4 94.4 ± 8.2 15.67 ± 1.42 0.68 ± 0.12

VC 60.6 ± 7.7 3.2 ± 0.3 10.4 ± 1.1 94.4 ± 8.2 18.73 ± 1.84 0.65 ± 0.13

MX1 60.9 ± 7.6 4.4 ± 0.5 14.3 ± 1.5 94.3 ± 8.2 13.77 ± 1.34 0.66 ± 0.13

MX2 60.9 ± 7.6 4.4 ± 0.5 14.3 ± 1.5 94.3 ± 8.2 13.76 ± 1.34 0.66 ± 0.13

MX3 60.9 ± 7.6 4.4 ± 0.5 14.3 ± 1.5 94.3 ± 8.2 13.75 ± 1.34 0.66 ± 0.13

RH8 63.6 ± 6.4 3.9 ± 0.4 12.7 ± 1.3 94.4 ± 8.2 16.21 ± 1.47 0.68 ± 0.12

RH9 63.3 ± 6.1 4.4 ± 0.5 14.2 ± 1.5 94.4 ± 8.2 14.41 ± 1.32 0.68 ± 0.11

RH10 63.3 ± 6.1 4.4 ± 0.5 14.2 ± 1.5 94.4 ± 8.2 14.41 ± 1.32 0.68 ± 0.11

Average 62.1 4.2 13.4 94.4 15.1 0.7

Median 63.3 4.4 14.2 94.4 14.4 0.7

Deviation 1.4 0.4 1.4 0.0 1.7 0.0

Survey interval (About, Top)

Selected data (About, Top)

Key plasma parameters

Velocity

Magnetic Field

Simple Methods (About, Top)

Rankine Chi^2 Contour (About, Top)

Conservation of Individual Rankine-Hugoniot Equations (About, Top)

Shock Speed (About, Top)

Theta Bn (About, Top)

Mach Numbers (About, Top)

Page updated Sun Mar 13 12:08:21 2005
Justin C Kasper (jck@mit.edu)

Year	1998
Fractional day of year	218.302830
Arrival time of shock [seconds of day]	26164.5 ± 60.0
Shock type	FF
Electron data availability	0
X GSE location of spacecraft [Re]	92.107
Y GSE location of spacecraft [Re]	8.716
Z GSE location of spacecraft [Re]	-3.010
Upstream plasma points selected for analysis	0011
Upstream field points selected for analysis	0344
Downstream plasma points selected for analysis	0011
Downstream field points selected for analysis	0335
Minimum chisq/dof for RH8,RH9,RH10	6.92, 11.52, 11.68
Event added to database	Mon Feb 14 11:06:45 2005
Event last processed	Sun Mar 13 10:47:40 2005
Method selected	RH08
Propagation delay to Earth [minutes]	20.165 ± 2.196

Parameter	Upstream	Downstream
Vx GSE [km/s]	-371.7 ± 1.7	-424.6 ± 6.4
Vy GSE [km/s]	-20.1 ± 2.9	-16.2 ± 4.5
Vz GSE [km/s]	-2.8 ± 3.4	18.0 ± 6.8
Wi [km/s]	17.3 ± 1.6	22.8 ± 2.8
We [km/s]	546.4 ± 49.9	721.0 ± 87.9
Ni [n/cc]	10.7 ± 1.0	19.7 ± 2.7
Bx GSE [nT]	-0.4 ± 0.7	-2.1 ± 0.8
By GSE [nT]	8.4 ± 0.4	14.6 ± 0.8
Bz GSE [nT]	-6.0 ± 0.5	-10.4 ± 0.6
Plasma Beta	0.064 ± 0.066	0.070 ± 0.074
Sound Speed [km/s]	22.31 ± 2.04	29.44 ± 3.59
Alfven Speed [km/s]	69.29 ± 4.17	89.58 ± 9.40

Method	Nx	Ny	Nz	Theta [degrees]	Phi [degrees]
MC	-0.981 ± 0.116	-0.115 ± 0.680	0.157 ± 0.156	9.04 ± 30.89	186.69 ± 39.73
VC	-0.931 ± 0.041	0.066 ± 0.084	0.358 ± 0.342	20.97 ± 6.50	175.94 ± 5.18
MX1	-0.926 ± 0.055	0.027 ± 0.111	0.377 ± 0.358	22.16 ± 8.28	178.31 ± 6.86
MX2	-0.925 ± 0.055	0.028 ± 0.107	0.378 ± 0.359	22.22 ± 8.39	178.27 ± 6.64
MX3	-0.925 ± 0.057	0.029 ± 0.103	0.379 ± 0.360	22.29 ± 8.57	178.23 ± 6.38
RH08	-0.983 ± 0.002	-0.130 ± 0.009	0.128 ± 0.128	7.38 ± 0.54	187.52 ± 0.55
RH09	-0.980 ± 0.014	-0.182 ± 0.068	0.084 ± 0.084	4.81 ± 4.02	190.53 ± 3.99
RH10	-0.980 ± 0.014	-0.182 ± 0.068	0.084 ± 0.084	4.81 ± 4.02	190.53 ± 3.99
Average	-0.954	-0.057	0.243	14.209	183.252
Median	-0.931	0.027	0.358	20.966	186.693
Deviation	0.029	0.105	0.141	8.352	6.141

Method	ThetaBn	Shock Speed	Compression
MC	81.6 ± 3.6	484.6 ± 50.4	1.85 ± 0.29
VC	83.3 ± 3.1	461.4 ± 55.6	1.85 ± 0.29
MX1	80.8 ± 3.1	460.3 ± 55.2	1.85 ± 0.29
MX2	80.8 ± 3.1	460.1 ± 55.2	1.85 ± 0.29
MX3	80.8 ± 3.1	460.0 ± 55.2	1.85 ± 0.29
RH08	81.9 ± 3.7	485.4 ± 49.6	1.85 ± 0.29
RH09	80.9 ± 3.8	483.7 ± 47.6	1.85 ± 0.29
RH10	80.9 ± 3.8	483.7 ± 47.6	1.85 ± 0.29
Average	81.4	472.4	1.85
Median	80.9	483.7	1.85
Deviation	0.9	12.8	0.00

Method	dV	Slow	Intermediate	Fast	Slow Mach	Fast Mach
MC	118.1 ± 1.7	3.1 ± 0.2	10.1 ± 0.6	72.8 ± 3.6	38.35 ± 3.36	1.63 ± 0.08
VC	117.5 ± 1.8	2.5 ± 0.2	8.1 ± 0.5	72.8 ± 3.6	47.89 ± 4.23	1.62 ± 0.08
MX1	117.8 ± 1.8	3.4 ± 0.3	11.0 ± 0.7	72.8 ± 3.6	35.08 ± 3.11	1.62 ± 0.08
MX2	117.8 ± 1.8	3.4 ± 0.3	11.0 ± 0.7	72.8 ± 3.6	35.06 ± 3.11	1.62 ± 0.08
MX3	117.8 ± 1.8	3.4 ± 0.3	11.1 ± 0.7	72.8 ± 3.6	35.03 ± 3.11	1.62 ± 0.08
RH8	117.7 ± 1.7	3.0 ± 0.2	9.8 ± 0.6	72.8 ± 3.6	39.46 ± 3.45	1.62 ± 0.08
RH9	116.1 ± 1.8	3.4 ± 0.3	11.0 ± 0.7	72.8 ± 3.6	34.76 ± 3.04	1.60 ± 0.08
RH10	116.1 ± 1.8	3.4 ± 0.3	11.0 ± 0.7	72.8 ± 3.6	34.76 ± 3.04	1.60 ± 0.08
Average	117.3	3.2	10.4	72.8	37.5	1.6
Median	117.8	3.4	11.0	72.8	35.1	1.6
Deviation	0.8	0.3	1.1	0.0	4.6	0.0