MIT Space Plasma Group Interplanetary Shock Analysis Pages Database: Wind Shock Analysis Event ID: 20012291100 08/17/2001 229.45898 1100 [UT]

General Information (About, Top)

Year	2001
Fractional day of year	229.458978
Arrival time of shock [seconds of day]	39655.7 ± 60.0
Shock type	FF
Electron data availability	0
X GSE location of spacecraft [Re]	42.550
Y GSE location of spacecraft [Re]	294.392
Z GSE location of spacecraft [Re]	18.420
Upstream plasma points selected for analysis	0011
Upstream field points selected for analysis	0336
Downstream plasma points selected for analysis	0011
Downstream field points selected for analysis	0336
Minimum chisq/dof for RH8,RH9,RH10	6.73, 10.79, 11.15
Event added to database	Mon Feb 14 11:14:46 2005
Event last processed	Sun Mar 13 11:10:42 2005
Method selected	RH08
Propagation delay to Earth [minutes]	7.399 ± 0.806

Asymptotic plasma parameters (About, Top)

Parameter	Upstream	Downstream
Vx GSE [km/s]	-351.2 ± 5.7	-478.0 ± 10.0
Vy GSE [km/s]	-1.4 ± 7.3	-1.5 ± 6.3
Vz GSE [km/s]	1.5 ± 4.8	-34.6 ± 8.6
Wi [km/s]	22.0 ± 2.4	45.3 ± 4.3
We [km/s]	697.2 ± 76.1	1432.4 ± 136.7
Ni [n/cc]	4.4 ± 0.6	14.2 ± 1.3
Bx GSE [nT]	-1.0 ± 1.0	-2.8 ± 1.2
By GSE [nT]	2.1 ± 1.5	13.0 ± 1.4
Bz GSE [nT]	4.7 ± 0.3	12.7 ± 1.4
Plasma Beta	0.153 ± 0.140	0.181 ± 0.178
Sound Speed [km/s]	28.46 ± 3.11	58.48 ± 5.58
Alfven Speed [km/s]	57.18 ± 4.20	107.22 ± 2.86

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

Method	Nx	Ny	Nz	Theta [degrees]	Phi [degrees]
MC	-0.748 ± 0.378	-0.521 ± 0.471	0.411 ± 0.386	24.24 ± 36.58	214.83 ± 34.17
VC	-0.961 ± 0.023	-0.000 ± 0.070	-0.275 ± 0.268	-15.96 ± 4.69	180.03 ± 4.15
MX1	-0.980 ± 0.033	0.005 ± 0.069	-0.201 ± 0.198	-11.60 ± 9.28	179.71 ± 4.05
MX2	-0.970 ± 0.029	0.031 ± 0.069	-0.243 ± 0.238	-14.06 ± 6.84	178.15 ± 4.09
MX3	-0.967 ± 0.028	0.038 ± 0.072	-0.253 ± 0.247	-14.63 ± 6.39	177.76 ± 4.27
RH08	-0.990 ± 0.001	0.026 ± 0.010	-0.140 ± 0.139	-8.03 ± 0.37	178.50 ± 0.58
RH09	-0.993 ± 0.008	0.026 ± 0.070	-0.117 ± 0.117	-6.74 ± 4.01	178.50 ± 4.07
RH10	-0.993 ± 0.008	0.026 ± 0.070	-0.117 ± 0.117	-6.74 ± 4.01	178.50 ± 4.07
Average	-0.950	-0.046	-0.117	-6.688	183.245
Median	-0.970	0.026	-0.140	-8.028	178.496
Deviation	0.082	0.192	0.222	13.015	12.786

Key shock parameters (About, Top)

Method	ThetaBn	Shock Speed	Compression
MC	71.5 ± 17.7	379.5 ± 18.2	3.29 ± 0.54
VC	87.2 ± 9.4	521.9 ± 24.4	3.29 ± 0.54
MX1	88.8 ± 9.8	527.7 ± 24.6	3.29 ± 0.54
MX2	89.5 ± 9.2	524.7 ± 24.6	3.29 ± 0.54
MX3	89.2 ± 9.1	523.7 ± 24.6	3.29 ± 0.54
RH08	85.2 ± 9.9	529.5 ± 24.7	3.29 ± 0.54
RH09	84.0 ± 10.1	529.7 ± 24.7	3.29 ± 0.54
RH10	84.0 ± 10.1	529.7 ± 24.7	3.29 ± 0.54
Average	84.9	508.3	3.29
Median	87.2	527.7	3.29
Deviation	5.9	52.1	0.00

Upstream wave speeds and mach numbers (About, Top)

Method	dV	Slow	Intermediate	Fast	Slow Mach	Fast Mach
MC	115.3 ± 7.7	8.1 ± 0.7	18.1 ± 1.3	63.4 ± 3.9	14.33 ± 1.75	1.83 ± 0.20
VC	184.7 ± 5.0	1.3 ± 0.1	2.8 ± 0.2	63.9 ± 3.9	148.68 ± 14.10	2.90 ± 0.20
MX1	184.0 ± 5.2	0.5 ± 0.0	1.2 ± 0.1	64.0 ± 3.9	357.64 ± 34.39	2.89 ± 0.20
MX2	184.6 ± 5.0	0.2 ± 0.0	0.4 ± 0.0	64.0 ± 3.9	931.15 ± 88.83	2.90 ± 0.20
MX3	184.6 ± 5.0	0.4 ± 0.0	0.8 ± 0.1	64.0 ± 3.9	511.06 ± 48.67	2.90 ± 0.20
RH8	182.1 ± 5.3	2.1 ± 0.2	4.8 ± 0.4	63.9 ± 3.9	86.38 ± 8.41	2.86 ± 0.20
RH9	181.3 ± 5.4	2.6 ± 0.2	5.9 ± 0.4	63.9 ± 3.9	69.35 ± 6.79	2.85 ± 0.20
RH10	181.3 ± 5.4	2.6 ± 0.2	5.9 ± 0.4	63.9 ± 3.9	69.35 ± 6.79	2.85 ± 0.20
Average	174.7	2.2	5.0	63.9	273.5	2.7
Median	184.0	2.1	4.8	63.9	148.7	2.9
Deviation	24.1	2.6	5.8	0.2	315.6	0.4

Downstream wave speeds and mach numbers (About, Top)

Method	dV	Slow	Intermediate	Fast	Slow Mach	Fast Mach
MC	35.1 ± 9.7	16.4 ± 1.2	34.0 ± 0.9	121.1 ± 3.1	2.15 ± 0.60	0.29 ± 0.08
VC	52.8 ± 9.1	2.5 ± 0.2	5.3 ± 0.1	122.2 ± 3.2	20.84 ± 2.98	0.43 ± 0.07
MX1	52.5 ± 9.4	1.0 ± 0.1	2.2 ± 0.1	122.2 ± 3.2	50.06 ± 7.63	0.43 ± 0.08
MX2	52.8 ± 9.3	0.4 ± 0.0	0.8 ± 0.0	122.2 ± 3.2	130.69 ± 19.28	0.43 ± 0.07
MX3	52.8 ± 9.3	0.7 ± 0.1	1.5 ± 0.0	122.2 ± 3.2	71.69 ± 10.52	0.43 ± 0.07
RH8	51.5 ± 9.7	4.3 ± 0.3	9.0 ± 0.2	122.2 ± 3.2	11.98 ± 1.95	0.42 ± 0.08
RH9	51.1 ± 9.7	5.3 ± 0.4	11.1 ± 0.3	122.1 ± 3.2	9.59 ± 1.60	0.42 ± 0.08
RH10	51.1 ± 9.7	5.3 ± 0.4	11.1 ± 0.3	122.1 ± 3.2	9.59 ± 1.60	0.42 ± 0.08
Average	50.0	4.5	9.4	122.1	38.3	0.4
Median	52.5	4.3	9.0	122.2	20.8	0.4
Deviation	6.0	5.2	10.8	0.4	44.3	0.0

Survey interval (About, Top)

Key plasma parameters

Velocity

Magnetic Field

Shock Speed (About, Top)

Theta Bn (About, Top)