MIT Space Plasma Group Interplanetary Shock Analysis Pages Database: Wind Shock Analysis Event ID: 20011111529 04/21/2001 111.64530 1529 [UT]

General Information (About, Top)

Year	2001
Fractional day of year	111.645295
Arrival time of shock [seconds of day]	55753.5 ± 3.0
Shock type	FF
Electron data availability	0
X GSE location of spacecraft [Re]	6.675
Y GSE location of spacecraft [Re]	-260.555
Z GSE location of spacecraft [Re]	-3.840
Upstream plasma points selected for analysis	0008
Upstream field points selected for analysis	0238
Downstream plasma points selected for analysis	0010
Downstream field points selected for analysis	0301
Minimum chisq/dof for RH8,RH9,RH10	8.21, 9.39, 9.86
Event added to database	Mon Feb 14 11:13:37 2005
Event last processed	Sun Mar 13 11:09:38 2005
Method selected	RH08
Propagation delay to Earth [minutes]	30.631 ± 3.196

Asymptotic plasma parameters (About, Top)

Parameter	Upstream	Downstream
Vx GSE [km/s]	-351.3 ± 0.7	-394.2 ± 5.0
Vy GSE [km/s]	2.8 ± 2.8	5.5 ± 2.5
Vz GSE [km/s]	-19.4 ± 1.2	-2.7 ± 3.2
Wi [km/s]	19.4 ± 0.5	25.4 ± 0.9
We [km/s]	614.0 ± 14.3	804.8 ± 29.9
Ni [n/cc]	6.8 ± 0.2	13.3 ± 1.1
Bx GSE [nT]	1.9 ± 0.3	-1.3 ± 0.2
By GSE [nT]	-0.6 ± 0.9	-5.2 ± 0.4
Bz GSE [nT]	-1.1 ± 0.4	3.4 ± 1.5
Plasma Beta	0.885 ± 0.892	0.436 ± 0.404
Sound Speed [km/s]	25.07 ± 0.58	32.86 ± 1.22
Alfven Speed [km/s]	20.65 ± 0.62	39.13 ± 3.42

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

Method	Nx	Ny	Nz	Theta [degrees]	Phi [degrees]
MC	-0.735 ± 0.083	0.657 ± 0.092	0.165 ± 0.164	9.51 ± 8.53	138.20 ± 7.07
VC	-0.929 ± 0.031	0.059 ± 0.077	0.365 ± 0.348	21.41 ± 4.88	176.39 ± 4.73
MX1	-0.773 ± 0.345	0.628 ± 0.424	0.093 ± 0.092	5.32 ± 26.99	140.93 ± 31.38
MX2	-0.810 ± 0.033	0.586 ± 0.046	0.033 ± 0.033	1.87 ± 4.20	144.10 ± 3.26
MX3	-0.826 ± 0.025	0.564 ± 0.036	-0.005 ± 0.005	-0.27 ± 3.73	145.70 ± 2.49
RH08	-0.844 ± 0.005	0.404 ± 0.008	-0.352 ± 0.337	-20.61 ± 0.57	154.43 ± 0.55
RH09	-0.836 ± 0.032	0.400 ± 0.053	-0.374 ± 0.356	-21.98 ± 3.36	154.43 ± 3.56
RH10	-0.836 ± 0.034	0.400 ± 0.058	-0.374 ± 0.356	-21.98 ± 3.56	154.43 ± 3.91
Average	-0.824	0.462	-0.056	-3.340	151.076
Median	-0.826	0.564	0.033	1.873	154.429
Deviation	0.057	0.195	0.280	16.400	12.075

Key shock parameters (About, Top)

Method	ThetaBn	Shock Speed	Compression
MC	32.4 ± 16.8	330.6 ± 5.1	1.91 ± 0.19
VC	22.7 ± 13.1	413.9 ± 4.0	1.91 ± 0.19
MX1	33.7 ± 15.7	346.1 ± 4.9	1.91 ± 0.19
MX2	35.0 ± 14.1	362.1 ± 4.9	1.91 ± 0.19
MX3	36.1 ± 13.3	368.5 ± 4.8	1.91 ± 0.19
RH08	51.5 ± 8.8	369.3 ± 5.5	1.91 ± 0.19
RH09	52.7 ± 8.8	365.3 ± 5.6	1.91 ± 0.19
RH10	52.7 ± 8.8	365.3 ± 5.6	1.91 ± 0.19
Average	39.6	365.1	1.91
Median	36.1	365.3	1.91
Deviation	11.3	23.8	0.00

Upstream wave speeds and mach numbers (About, Top)

Method	dV	Slow	Intermediate	Fast	Slow Mach	Fast Mach
MC	73.6 ± 2.3	15.2 ± 0.4	17.4 ± 0.5	28.7 ± 0.7	4.84 ± 0.26	2.57 ± 0.13
VC	94.4 ± 1.1	17.4 ± 0.5	19.0 ± 0.6	27.4 ± 0.6	5.43 ± 0.19	3.44 ± 0.11
MX1	74.5 ± 2.2	14.9 ± 0.4	17.2 ± 0.5	28.8 ± 0.7	5.00 ± 0.26	2.59 ± 0.13
MX2	76.7 ± 2.1	14.6 ± 0.4	16.9 ± 0.5	29.0 ± 0.7	5.25 ± 0.26	2.65 ± 0.13
MX3	76.6 ± 2.0	14.4 ± 0.4	16.7 ± 0.5	29.1 ± 0.7	5.34 ± 0.26	2.63 ± 0.12
RH8	64.7 ± 1.4	10.5 ± 0.3	12.9 ± 0.4	30.7 ± 0.7	6.18 ± 0.26	2.11 ± 0.09
RH9	63.1 ± 1.3	10.2 ± 0.3	12.5 ± 0.4	30.9 ± 0.7	6.21 ± 0.26	2.05 ± 0.08
RH10	63.1 ± 1.3	10.2 ± 0.3	12.5 ± 0.4	30.9 ± 0.7	6.21 ± 0.26	2.05 ± 0.08
Average	73.3	13.4	15.6	29.4	5.6	2.5
Median	74.5	14.6	16.9	29.1	5.4	2.6
Deviation	10.4	2.8	2.6	1.3	0.6	0.5

Downstream wave speeds and mach numbers (About, Top)

Method	dV	Slow	Intermediate	Fast	Slow Mach	Fast Mach
MC	37.6 ± 3.6	24.0 ± 0.8	33.0 ± 2.9	45.2 ± 2.3	1.57 ± 0.19	0.83 ± 0.10
VC	48.3 ± 4.3	27.4 ± 0.9	36.1 ± 3.2	43.2 ± 2.3	1.77 ± 0.20	1.12 ± 0.12
MX1	38.1 ± 3.8	23.5 ± 0.8	32.5 ± 2.8	45.5 ± 2.3	1.63 ± 0.20	0.84 ± 0.10
MX2	39.8 ± 4.0	23.0 ± 0.8	32.1 ± 2.8	45.7 ± 2.3	1.74 ± 0.21	0.87 ± 0.10
MX3	39.7 ± 4.1	22.6 ± 0.8	31.6 ± 2.8	45.9 ± 2.3	1.76 ± 0.22	0.87 ± 0.10
RH8	33.3 ± 4.7	16.5 ± 0.6	24.3 ± 2.1	48.4 ± 2.3	2.02 ± 0.31	0.69 ± 0.10
RH9	32.3 ± 4.7	16.0 ± 0.6	23.7 ± 2.1	48.6 ± 2.3	2.03 ± 0.32	0.67 ± 0.10
RH10	32.3 ± 4.7	16.0 ± 0.6	23.7 ± 2.1	48.6 ± 2.3	2.03 ± 0.32	0.67 ± 0.10
Average	37.7	21.1	29.6	46.4	1.8	0.8
Median	38.1	23.0	32.1	45.9	1.8	0.8
Deviation	5.3	4.4	4.9	2.0	0.2	0.2

Survey interval (About, Top)

Key plasma parameters

Velocity

Magnetic Field

Shock Speed (About, Top)

Theta Bn (About, Top)