MIT Space Plasma Group Interplanetary Shock Analysis Pages Database: Wind Shock Analysis Event ID: 19972831557 10/10/1997 283.66467 1557 [UT]

General Information (About, Top)

Year	1997
Fractional day of year	283.664670
Arrival time of shock [seconds of day]	57427.5 ± 2.0
Shock type	FF
Electron data availability	0
X GSE location of spacecraft [Re]	76.806
Y GSE location of spacecraft [Re]	-35.098
Z GSE location of spacecraft [Re]	0.048
Upstream plasma points selected for analysis	0010
Upstream field points selected for analysis	0249
Downstream plasma points selected for analysis	0010
Downstream field points selected for analysis	0260
Minimum chisq/dof for RH8,RH9,RH10	5.72, 8.72, 8.91
Event added to database	Fri Mar 11 23:55:48 2005
Event last processed	Sun Mar 13 11:18:25 2005
Method selected	RH08
Propagation delay to Earth [minutes]	16.504 ± 1.473

Asymptotic plasma parameters (About, Top)

Parameter	Upstream	Downstream
Vx GSE [km/s]	-408.3 ± 4.6	-438.1 ± 3.2
Vy GSE [km/s]	-4.0 ± 1.3	-4.2 ± 3.1
Vz GSE [km/s]	3.9 ± 3.9	14.0 ± 2.5
Wi [km/s]	15.7 ± 0.7	20.4 ± 1.2
We [km/s]	495.6 ± 20.7	644.3 ± 38.7
Ni [n/cc]	12.1 ± 0.7	19.5 ± 1.0
Bx GSE [nT]	1.2 ± 1.2	2.7 ± 1.0
By GSE [nT]	7.7 ± 0.6	12.4 ± 0.5
Bz GSE [nT]	3.3 ± 0.7	6.2 ± 0.9
Plasma Beta	0.085 ± 0.088	0.085 ± 0.087
Sound Speed [km/s]	20.23 ± 0.85	26.30 ± 1.58
Alfven Speed [km/s]	53.90 ± 1.30	70.18 ± 1.99

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

Method	Nx	Ny	Nz	Theta [degrees]	Phi [degrees]
MC	-0.817 ± 0.250	0.485 ± 0.385	-0.312 ± 0.302	-18.19 ± 23.27	149.33 ± 26.60
VC	-0.942 ± 0.061	-0.019 ± 0.106	0.335 ± 0.322	19.59 ± 10.34	181.17 ± 6.48
MX1	-0.934 ± 0.072	0.060 ± 0.188	0.351 ± 0.336	20.54 ± 11.63	176.30 ± 11.54
MX2	-0.929 ± 0.075	0.047 ± 0.174	0.367 ± 0.350	21.56 ± 11.56	177.13 ± 10.71
MX3	-0.922 ± 0.078	0.030 ± 0.159	0.386 ± 0.366	22.72 ± 11.61	178.12 ± 9.87
RH08	-0.946 ± 0.006	0.058 ± 0.009	0.318 ± 0.307	18.57 ± 1.13	176.49 ± 0.52
RH09	-0.913 ± 0.028	0.008 ± 0.070	0.408 ± 0.384	24.07 ± 3.98	179.50 ± 4.37
RH10	-0.918 ± 0.028	0.008 ± 0.070	0.397 ± 0.374	23.37 ± 4.03	179.50 ± 4.34
Average	-0.915	0.085	0.281	16.528	174.693
Median	-0.922	0.047	0.367	21.560	178.118
Deviation	0.041	0.164	0.242	14.154	10.383

Key shock parameters (About, Top)

Method	ThetaBn	Shock Speed	Compression
MC	78.4 ± 9.7	387.9 ± 13.6	1.62 ± 0.09
VC	88.7 ± 6.0	471.0 ± 10.9	1.62 ± 0.09
MX1	86.8 ± 6.2	467.4 ± 10.9	1.62 ± 0.09
MX2	87.1 ± 6.0	465.3 ± 10.8	1.62 ± 0.09
MX3	87.5 ± 5.8	462.3 ± 10.7	1.62 ± 0.09
RH08	87.7 ± 6.4	472.2 ± 11.0	1.62 ± 0.09
RH09	88.1 ± 5.6	458.2 ± 10.6	1.62 ± 0.09
RH10	88.4 ± 5.7	460.5 ± 10.7	1.62 ± 0.09
Average	86.6	455.6	1.62
Median	87.7	465.3	1.62
Deviation	3.4	27.8	0.00

Upstream wave speeds and mach numbers (About, Top)

Method	dV	Slow	Intermediate	Fast	Slow Mach	Fast Mach
MC	57.5 ± 5.4	3.8 ± 0.1	10.8 ± 0.3	57.4 ± 1.3	15.12 ± 1.89	1.00 ± 0.10
VC	85.0 ± 3.2	0.4 ± 0.0	1.2 ± 0.0	57.6 ± 1.3	195.62 ± 14.17	1.48 ± 0.07
MX1	84.8 ± 3.2	1.1 ± 0.0	3.0 ± 0.1	57.6 ± 1.3	80.28 ± 5.82	1.47 ± 0.07
MX2	84.8 ± 3.1	1.0 ± 0.0	2.7 ± 0.1	57.6 ± 1.3	88.84 ± 6.35	1.47 ± 0.07
MX3	84.5 ± 3.0	0.8 ± 0.0	2.4 ± 0.1	57.6 ± 1.3	101.38 ± 7.15	1.47 ± 0.07
RH8	84.9 ± 3.3	0.7 ± 0.0	2.1 ± 0.1	57.6 ± 1.3	113.57 ± 8.42	1.48 ± 0.07
RH9	83.9 ± 2.8	0.6 ± 0.0	1.8 ± 0.0	57.6 ± 1.3	132.11 ± 9.17	1.46 ± 0.07
RH10	84.2 ± 2.9	0.5 ± 0.0	1.5 ± 0.0	57.6 ± 1.3	155.64 ± 10.88	1.46 ± 0.07
Average	81.2	1.1	3.2	57.6	110.3	1.4
Median	84.8	0.8	2.4	57.6	113.6	1.5
Deviation	9.6	1.1	3.1	0.0	53.9	0.2

Downstream wave speeds and mach numbers (About, Top)

Method	dV	Slow	Intermediate	Fast	Slow Mach	Fast Mach
MC	36.3 ± 4.7	5.0 ± 0.3	14.1 ± 0.4	74.8 ± 1.7	7.34 ± 0.97	0.49 ± 0.06
VC	53.5 ± 2.4	0.6 ± 0.0	1.6 ± 0.0	75.0 ± 1.7	94.80 ± 6.56	0.71 ± 0.03
MX1	53.4 ± 2.6	1.4 ± 0.1	3.9 ± 0.1	75.0 ± 1.7	38.90 ± 2.78	0.71 ± 0.04
MX2	53.4 ± 2.5	1.2 ± 0.1	3.5 ± 0.1	75.0 ± 1.7	43.05 ± 3.04	0.71 ± 0.03
MX3	53.1 ± 2.4	1.1 ± 0.1	3.1 ± 0.1	75.0 ± 1.7	49.03 ± 3.43	0.71 ± 0.03
RH8	53.5 ± 2.7	1.0 ± 0.1	2.8 ± 0.1	75.0 ± 1.7	55.03 ± 3.96	0.71 ± 0.04
RH9	52.5 ± 2.3	0.8 ± 0.0	2.4 ± 0.1	75.0 ± 1.7	63.67 ± 4.41	0.70 ± 0.03
RH10	52.8 ± 2.3	0.7 ± 0.0	2.0 ± 0.1	75.0 ± 1.7	75.14 ± 5.21	0.70 ± 0.03
Average	51.1	1.5	4.2	74.9	53.4	0.7
Median	53.4	1.1	3.1	75.0	55.0	0.7
Deviation	6.0	1.4	4.1	0.1	26.1	0.1

Survey interval (About, Top)

Key plasma parameters

Velocity

Magnetic Field

Shock Speed (About, Top)

Theta Bn (About, Top)