MIT Space Plasma Group Interplanetary Shock Analysis Pages Database: Wind Shock Analysis Event ID: 19990490248 02/18/1999 49.11686 0248 [UT]

General Information (About, Top)

Year	1999
Fractional day of year	49.116858
Arrival time of shock [seconds of day]	10096.5 ± 3.0
Shock type	FF
Electron data availability	0
X GSE location of spacecraft [Re]	-9.187
Y GSE location of spacecraft [Re]	-61.526
Z GSE location of spacecraft [Re]	-23.811
Upstream plasma points selected for analysis	0010
Upstream field points selected for analysis	0294
Downstream plasma points selected for analysis	0008
Downstream field points selected for analysis	0273
Minimum chisq/dof for RH8,RH9,RH10	4.74, 11.45, 11.77
Event added to database	Mon Feb 14 11:07:42 2005
Event last processed	Sun Mar 13 10:51:40 2005
Method selected	RH08
Propagation delay to Earth [minutes]	-1.756 ± 0.423

Asymptotic plasma parameters (About, Top)

Parameter	Upstream	Downstream
Vx GSE [km/s]	-384.5 ± 11.2	-604.6 ± 6.1
Vy GSE [km/s]	-19.2 ± 9.9	-36.3 ± 10.0
Vz GSE [km/s]	-74.4 ± 14.7	-102.1 ± 18.9
Wi [km/s]	37.1 ± 9.5	138.6 ± 8.8
We [km/s]	1174.0 ± 301.9	4382.4 ± 278.2
Ni [n/cc]	2.7 ± 0.6	10.9 ± 0.7
Bx GSE [nT]	-4.8 ± 0.4	-5.2 ± 0.7
By GSE [nT]	4.5 ± 0.3	17.4 ± 0.6
Bz GSE [nT]	4.3 ± 0.9	8.1 ± 2.8
Plasma Beta	0.146 ± 0.125	1.126 ± 1.030
Sound Speed [km/s]	47.93 ± 12.33	178.91 ± 11.36
Alfven Speed [km/s]	106.27 ± 14.38	132.83 ± 9.65

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

Method	Nx	Ny	Nz	Theta [degrees]	Phi [degrees]
MC	-0.872 ± 0.109	-0.122 ± 0.099	0.475 ± 0.435	28.33 ± 13.19	187.99 ± 6.45
VC	-0.989 ± 0.013	-0.077 ± 0.060	-0.122 ± 0.122	-7.03 ± 5.74	184.47 ± 3.49
MX1	-0.999 ± 0.005	0.002 ± 0.060	-0.044 ± 0.044	-2.53 ± 6.95	179.88 ± 3.46
MX2	-0.997 ± 0.008	0.009 ± 0.067	-0.079 ± 0.079	-4.55 ± 5.51	179.47 ± 3.83
MX3	-0.995 ± 0.008	0.012 ± 0.070	-0.094 ± 0.094	-5.42 ± 5.02	179.29 ± 4.02
RH08	-0.993 ± 0.001	0.009 ± 0.010	-0.117 ± 0.117	-6.74 ± 0.54	179.50 ± 0.55
RH09	-0.994 ± 0.007	0.009 ± 0.070	-0.106 ± 0.106	-6.09 ± 4.02	179.50 ± 4.03
RH10	-0.994 ± 0.007	0.009 ± 0.070	-0.106 ± 0.106	-6.09 ± 4.02	179.50 ± 4.03
Average	-0.979	-0.019	-0.024	-1.266	181.199
Median	-0.994	0.009	-0.094	-5.422	179.499
Deviation	0.044	0.052	0.203	12.043	3.250

Key shock parameters (About, Top)

Method	ThetaBn	Shock Speed	Compression
MC	44.0 ± 2.2	542.0 ± 21.8	4.47 ± 1.11
VC	60.1 ± 3.8	685.3 ± 24.0	4.47 ± 1.11
MX1	53.7 ± 3.8	681.3 ± 23.4	4.47 ± 1.11
MX2	54.9 ± 3.9	682.4 ± 23.6	4.47 ± 1.11
MX3	55.4 ± 4.0	683.4 ± 23.7	4.47 ± 1.11
RH08	56.5 ± 4.0	685.0 ± 23.8	4.47 ± 1.11
RH09	56.0 ± 4.0	684.3 ± 23.8	4.47 ± 1.11
RH10	56.0 ± 4.0	684.3 ± 23.8	4.47 ± 1.11
Average	54.6	666.0	4.47
Median	56.0	684.3	4.47
Deviation	4.7	50.1	0.00

Upstream wave speeds and mach numbers (About, Top)

Method	dV	Slow	Intermediate	Fast	Slow Mach	Fast Mach
MC	239.8 ± 9.5	32.1 ± 6.6	76.5 ± 10.4	112.8 ± 11.8	7.79 ± 1.82	2.15 ± 0.22
VC	294.3 ± 11.7	21.7 ± 4.2	52.9 ± 7.2	115.4 ± 11.2	14.13 ± 3.22	2.57 ± 0.29
MX1	293.9 ± 11.5	26.0 ± 5.2	62.9 ± 8.5	114.5 ± 11.4	11.79 ± 2.73	2.59 ± 0.29
MX2	293.4 ± 11.7	25.2 ± 5.0	61.2 ± 8.3	114.6 ± 11.3	12.12 ± 2.80	2.58 ± 0.29
MX3	293.8 ± 11.9	24.9 ± 4.9	60.4 ± 8.2	114.7 ± 11.3	12.30 ± 2.84	2.59 ± 0.29
RH8	294.6 ± 12.0	24.1 ± 4.8	58.7 ± 7.9	114.9 ± 11.3	12.70 ± 2.93	2.59 ± 0.29
RH9	294.2 ± 11.9	24.5 ± 4.8	59.4 ± 8.0	114.8 ± 11.3	12.53 ± 2.89	2.59 ± 0.29
RH10	294.2 ± 11.9	24.5 ± 4.8	59.4 ± 8.0	114.8 ± 11.3	12.53 ± 2.89	2.59 ± 0.29
Average	287.3	25.4	61.4	114.6	12.0	2.5
Median	294.2	24.9	60.4	114.8	12.5	2.6
Deviation	19.2	3.0	6.7	0.8	1.8	0.2

Downstream wave speeds and mach numbers (About, Top)

Method	dV	Slow	Intermediate	Fast	Slow Mach	Fast Mach
MC	59.0 ± 10.5	82.2 ± 3.1	95.6 ± 6.9	207.5 ± 5.7	0.72 ± 0.13	0.28 ± 0.05
VC	71.7 ± 6.9	54.5 ± 1.8	66.2 ± 4.8	216.4 ± 5.1	1.32 ± 0.17	0.33 ± 0.03
MX1	72.9 ± 6.3	65.7 ± 2.3	78.6 ± 5.7	213.3 ± 5.3	1.11 ± 0.13	0.34 ± 0.03
MX2	72.0 ± 6.5	63.7 ± 2.2	76.4 ± 5.6	213.9 ± 5.3	1.13 ± 0.14	0.34 ± 0.03
MX3	72.3 ± 6.7	62.9 ± 2.2	75.5 ± 5.5	214.2 ± 5.3	1.15 ± 0.14	0.34 ± 0.03
RH8	72.9 ± 6.9	60.9 ± 2.1	73.4 ± 5.3	214.7 ± 5.2	1.20 ± 0.15	0.34 ± 0.03
RH9	72.6 ± 6.8	61.8 ± 2.1	74.3 ± 5.4	214.5 ± 5.2	1.18 ± 0.15	0.34 ± 0.03
RH10	72.6 ± 6.8	61.8 ± 2.1	74.3 ± 5.4	214.5 ± 5.2	1.18 ± 0.15	0.34 ± 0.03
Average	70.7	64.2	76.8	213.6	1.1	0.3
Median	72.6	62.9	75.5	214.5	1.2	0.3
Deviation	4.8	8.0	8.4	2.6	0.2	0.0

Survey interval (About, Top)

Key plasma parameters

Velocity

Magnetic Field

Shock Speed (About, Top)

Theta Bn (About, Top)