MIT/CSR Interplanetary Shocks

MIT Space Plasma Group
Interplanetary Shock Analysis Pages

Database: Wind Shock Analysis
Event ID: 20020821124
03/23/2002 82.47509 1124 [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 2002

Fractional day of year 82.475087

Arrival time of shock [seconds of day] 41047.5 ± 3.0

Shock type FF

Electron data availability 0

X GSE location of spacecraft [Re] 66.988

Y GSE location of spacecraft [Re] -69.615

Z GSE location of spacecraft [Re] -5.600

Upstream plasma points selected for analysis 0010

Upstream field points selected for analysis 0335

Downstream plasma points selected for analysis 0009

Downstream field points selected for analysis 0302

Minimum chisq/dof for RH8,RH9,RH10 5.28, 8.30, 8.51

Event added to database
Mon Feb 14 11:18:31 2005

Event last processed
Sun Mar 13 11:14:38 2005

Method selected
RH08

Propagation delay to Earth [minutes]
15.866 ± 0.442

Asymptotic plasma parameters (About, Top)

Parameter Upstream Downstream

Vx GSE [km/s] -399.4 ± 3.1 -480.1 ± 4.0

Vy GSE [km/s] 22.9 ± 10.0 -0.3 ± 3.4

Vz GSE [km/s] 18.2 ± 3.1 48.7 ± 7.5

Wi [km/s] 30.6 ± 2.4 35.4 ± 2.0

We [km/s] 966.6 ± 77.1 1118.3 ± 62.2

Ni [n/cc] 3.7 ± 0.4 9.6 ± 0.7

Bx GSE [nT] 2.0 ± 0.5 1.4 ± 1.5

By GSE [nT] 0.2 ± 2.1 -10.0 ± 1.8

Bz GSE [nT] 4.5 ± 0.5 4.7 ± 2.2

Plasma Beta
0.259 ± 0.273
0.195 ± 0.190

Sound Speed [km/s]
39.46 ± 3.15
45.65 ± 2.54

Alfven Speed [km/s]
60.31 ± 3.36
81.28 ± 6.65

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

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

MC -0.585 ± 0.466 0.057 ± 0.368 -0.809 ± 0.554 -53.97 ± 33.08 174.41 ± 35.75

VC -0.905 ± 0.042 -0.259 ± 0.109 0.339 ± 0.325 19.80 ± 4.99 195.98 ± 6.87

MX1 -0.875 ± 0.450 0.128 ± 0.719 0.468 ± 0.430 27.89 ± 54.12 171.66 ± 46.90

MX2 -0.975 ± 0.022 0.043 ± 0.109 0.216 ± 0.213 12.49 ± 5.63 177.45 ± 6.38

MX3 -0.933 ± 0.028 0.044 ± 0.079 0.358 ± 0.342 20.97 ± 4.45 177.30 ± 4.83

RH08 -0.969 ± 0.003 0.198 ± 0.014 0.151 ± 0.150 8.68 ± 0.67 168.47 ± 0.84

RH09 -0.958 ± 0.019 0.249 ± 0.065 0.140 ± 0.139 8.03 ± 4.04 165.46 ± 3.90

RH10 -0.958 ± 0.020 0.249 ± 0.066 0.140 ± 0.139 8.03 ± 4.04 165.46 ± 3.95

Average -0.895 0.089 0.125 6.489 174.523

Median -0.933 0.128 0.216 12.493 174.414

Deviation 0.130 0.165 0.396 25.482 9.898

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression

MC 24.9 ± 9.7 253.1 ± 12.4 2.65 ± 0.32

VC 86.5 ± 9.6 506.5 ± 10.2 2.65 ± 0.32

MX1 85.7 ± 3.3 493.1 ± 11.1 2.65 ± 0.32

MX2 79.7 ± 4.3 532.5 ± 10.7 2.65 ± 0.32

MX3 87.6 ± 3.9 518.1 ± 10.8 2.65 ± 0.32

RH08 77.1 ± 3.1 521.4 ± 10.9 2.65 ± 0.32

RH09 76.9 ± 3.4 514.0 ± 11.0 2.65 ± 0.32

RH10 76.9 ± 3.4 514.0 ± 11.0 2.65 ± 0.32

Average 74.4 481.6 2.65

Median 79.7 514.0 2.65

Deviation 20.5 93.0 0.00

Upstream wave speeds and mach numbers (About, Top)

Method dV Slow Intermediate Fast Slow
Mach
Fast
Mach

MC 32.7 ± 3.5 33.9 ± 2.5 54.7 ± 3.1 63.6 ± 3.4 0.97 ± 0.14 0.52 ± 0.07

VC 145.0 ± 4.0 2.0 ± 0.1 3.7 ± 0.2 72.1 ± 3.9 71.56 ± 5.40 2.02 ± 0.12

MX1 132.3 ± 3.0 2.5 ± 0.2 4.5 ± 0.3 72.1 ± 3.9 53.53 ± 4.58 1.84 ± 0.13

MX2 138.0 ± 3.0 5.9 ± 0.4 10.7 ± 0.6 71.9 ± 3.9 23.53 ± 1.95 1.93 ± 0.13

MX3 138.0 ± 2.9 1.4 ± 0.1 2.6 ± 0.1 72.1 ± 3.9 98.38 ± 8.12 1.92 ± 0.13

RH8 127.2 ± 3.6 7.4 ± 0.5 13.5 ± 0.8 71.7 ± 3.9 17.23 ± 1.55 1.78 ± 0.13

RH9 122.9 ± 3.9 7.5 ± 0.5 13.7 ± 0.8 71.7 ± 3.9 16.39 ± 1.52 1.72 ± 0.13

RH10 122.9 ± 3.9 7.5 ± 0.5 13.7 ± 0.8 71.7 ± 3.9 16.39 ± 1.52 1.72 ± 0.13

Average 119.9 8.5 14.7 70.9 37.2 1.7

Median 132.3 7.4 13.5 71.9 23.5 1.8

Deviation 36.1 10.6 16.9 2.9 33.7 0.5

Downstream wave speeds and mach numbers (About, Top)

Method dV Slow Intermediate Fast Slow
Mach
Fast
Mach

MC 11.4 ± 8.1 39.9 ± 1.9 73.7 ± 6.0 84.3 ± 6.0 0.29 ± 0.20 0.13 ± 0.09

VC 55.7 ± 2.6 2.4 ± 0.1 5.0 ± 0.4 93.3 ± 5.2 22.80 ± 1.61 0.60 ± 0.05

MX1 50.5 ± 2.4 3.0 ± 0.1 6.1 ± 0.5 93.3 ± 5.2 16.94 ± 1.28 0.54 ± 0.05

MX2 53.7 ± 2.9 7.1 ± 0.3 14.5 ± 1.2 93.1 ± 5.2 7.60 ± 0.60 0.58 ± 0.04

MX3 52.9 ± 2.5 1.7 ± 0.1 3.5 ± 0.3 93.3 ± 5.2 31.25 ± 2.31 0.57 ± 0.05

RH8 49.1 ± 3.3 8.9 ± 0.3 18.2 ± 1.5 92.9 ± 5.2 5.51 ± 0.50 0.53 ± 0.04

RH9 47.1 ± 3.4 9.1 ± 0.3 18.5 ± 1.5 92.9 ± 5.2 5.21 ± 0.49 0.51 ± 0.04

RH10 47.1 ± 3.4 9.1 ± 0.3 18.5 ± 1.5 92.9 ± 5.2 5.21 ± 0.49 0.51 ± 0.04

Average 45.9 10.1 19.7 92.0 11.9 0.5

Median 50.5 8.9 18.2 93.1 7.6 0.5

Deviation 14.3 12.4 22.7 3.1 10.7 0.2

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 12:08:48 2005
Justin C Kasper (jck@mit.edu)

Year	2002
Fractional day of year	82.475087
Arrival time of shock [seconds of day]	41047.5 ± 3.0
Shock type	FF
Electron data availability	0
X GSE location of spacecraft [Re]	66.988
Y GSE location of spacecraft [Re]	-69.615
Z GSE location of spacecraft [Re]	-5.600
Upstream plasma points selected for analysis	0010
Upstream field points selected for analysis	0335
Downstream plasma points selected for analysis	0009
Downstream field points selected for analysis	0302
Minimum chisq/dof for RH8,RH9,RH10	5.28, 8.30, 8.51
Event added to database	Mon Feb 14 11:18:31 2005
Event last processed	Sun Mar 13 11:14:38 2005
Method selected	RH08
Propagation delay to Earth [minutes]	15.866 ± 0.442

Parameter	Upstream	Downstream
Vx GSE [km/s]	-399.4 ± 3.1	-480.1 ± 4.0
Vy GSE [km/s]	22.9 ± 10.0	-0.3 ± 3.4
Vz GSE [km/s]	18.2 ± 3.1	48.7 ± 7.5
Wi [km/s]	30.6 ± 2.4	35.4 ± 2.0
We [km/s]	966.6 ± 77.1	1118.3 ± 62.2
Ni [n/cc]	3.7 ± 0.4	9.6 ± 0.7
Bx GSE [nT]	2.0 ± 0.5	1.4 ± 1.5
By GSE [nT]	0.2 ± 2.1	-10.0 ± 1.8
Bz GSE [nT]	4.5 ± 0.5	4.7 ± 2.2
Plasma Beta	0.259 ± 0.273	0.195 ± 0.190
Sound Speed [km/s]	39.46 ± 3.15	45.65 ± 2.54
Alfven Speed [km/s]	60.31 ± 3.36	81.28 ± 6.65

Method	Nx	Ny	Nz	Theta [degrees]	Phi [degrees]
MC	-0.585 ± 0.466	0.057 ± 0.368	-0.809 ± 0.554	-53.97 ± 33.08	174.41 ± 35.75
VC	-0.905 ± 0.042	-0.259 ± 0.109	0.339 ± 0.325	19.80 ± 4.99	195.98 ± 6.87
MX1	-0.875 ± 0.450	0.128 ± 0.719	0.468 ± 0.430	27.89 ± 54.12	171.66 ± 46.90
MX2	-0.975 ± 0.022	0.043 ± 0.109	0.216 ± 0.213	12.49 ± 5.63	177.45 ± 6.38
MX3	-0.933 ± 0.028	0.044 ± 0.079	0.358 ± 0.342	20.97 ± 4.45	177.30 ± 4.83
RH08	-0.969 ± 0.003	0.198 ± 0.014	0.151 ± 0.150	8.68 ± 0.67	168.47 ± 0.84
RH09	-0.958 ± 0.019	0.249 ± 0.065	0.140 ± 0.139	8.03 ± 4.04	165.46 ± 3.90
RH10	-0.958 ± 0.020	0.249 ± 0.066	0.140 ± 0.139	8.03 ± 4.04	165.46 ± 3.95
Average	-0.895	0.089	0.125	6.489	174.523
Median	-0.933	0.128	0.216	12.493	174.414
Deviation	0.130	0.165	0.396	25.482	9.898

Method	ThetaBn	Shock Speed	Compression
MC	24.9 ± 9.7	253.1 ± 12.4	2.65 ± 0.32
VC	86.5 ± 9.6	506.5 ± 10.2	2.65 ± 0.32
MX1	85.7 ± 3.3	493.1 ± 11.1	2.65 ± 0.32
MX2	79.7 ± 4.3	532.5 ± 10.7	2.65 ± 0.32
MX3	87.6 ± 3.9	518.1 ± 10.8	2.65 ± 0.32
RH08	77.1 ± 3.1	521.4 ± 10.9	2.65 ± 0.32
RH09	76.9 ± 3.4	514.0 ± 11.0	2.65 ± 0.32
RH10	76.9 ± 3.4	514.0 ± 11.0	2.65 ± 0.32
Average	74.4	481.6	2.65
Median	79.7	514.0	2.65
Deviation	20.5	93.0	0.00

Method	dV	Slow	Intermediate	Fast	Slow Mach	Fast Mach
MC	32.7 ± 3.5	33.9 ± 2.5	54.7 ± 3.1	63.6 ± 3.4	0.97 ± 0.14	0.52 ± 0.07
VC	145.0 ± 4.0	2.0 ± 0.1	3.7 ± 0.2	72.1 ± 3.9	71.56 ± 5.40	2.02 ± 0.12
MX1	132.3 ± 3.0	2.5 ± 0.2	4.5 ± 0.3	72.1 ± 3.9	53.53 ± 4.58	1.84 ± 0.13
MX2	138.0 ± 3.0	5.9 ± 0.4	10.7 ± 0.6	71.9 ± 3.9	23.53 ± 1.95	1.93 ± 0.13
MX3	138.0 ± 2.9	1.4 ± 0.1	2.6 ± 0.1	72.1 ± 3.9	98.38 ± 8.12	1.92 ± 0.13
RH8	127.2 ± 3.6	7.4 ± 0.5	13.5 ± 0.8	71.7 ± 3.9	17.23 ± 1.55	1.78 ± 0.13
RH9	122.9 ± 3.9	7.5 ± 0.5	13.7 ± 0.8	71.7 ± 3.9	16.39 ± 1.52	1.72 ± 0.13
RH10	122.9 ± 3.9	7.5 ± 0.5	13.7 ± 0.8	71.7 ± 3.9	16.39 ± 1.52	1.72 ± 0.13
Average	119.9	8.5	14.7	70.9	37.2	1.7
Median	132.3	7.4	13.5	71.9	23.5	1.8
Deviation	36.1	10.6	16.9	2.9	33.7	0.5