MIT Space Plasma Group Interplanetary Shock Analysis Pages Database: Wind Shock Analysis Event ID: 19981761611 06/25/1998 176.67436 1611 [UT]

General Information (About, Top)

Year	1998
Fractional day of year	176.674358
Arrival time of shock [seconds of day]	58264.5 ± 3.0
Shock type	FF
Electron data availability	0
X GSE location of spacecraft [Re]	68.344
Y GSE location of spacecraft [Re]	66.010
Z GSE location of spacecraft [Re]	4.020
Upstream plasma points selected for analysis	0008
Upstream field points selected for analysis	0260
Downstream plasma points selected for analysis	0008
Downstream field points selected for analysis	0260
Minimum chisq/dof for RH8,RH9,RH10	18.48, 22.33, 23.27
Event added to database	Sat Mar 12 18:04:25 2005
Event last processed	Sun Mar 13 11:21:22 2005
Method selected	RH08
Propagation delay to Earth [minutes]	9.014 ± 821.533

Asymptotic plasma parameters (About, Top)

Parameter	Upstream	Downstream
Vx GSE [km/s]	-398.7 ± 0.6	-429.4 ± 5.2
Vy GSE [km/s]	-9.9 ± 1.5	-26.5 ± 10.4
Vz GSE [km/s]	-8.2 ± 1.2	-21.7 ± 2.6
Wi [km/s]	13.0 ± 0.3	16.8 ± 2.1
We [km/s]	410.1 ± 9.9	530.2 ± 65.4
Ni [n/cc]	14.4 ± 0.9	16.9 ± 2.2
Bx GSE [nT]	-6.3 ± 0.2	-5.1 ± 1.1
By GSE [nT]	0.2 ± 0.6	-3.2 ± 1.2
Bz GSE [nT]	8.4 ± 0.2	15.5 ± 0.3
Plasma Beta	0.046 ± 0.049	0.038 ± 0.037
Sound Speed [km/s]	16.74 ± 0.40	21.64 ± 2.67
Alfven Speed [km/s]	60.69 ± 2.31	88.93 ± 7.10

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

Method	Nx	Ny	Nz	Theta [degrees]	Phi [degrees]
MC	-0.881 ± 0.063	0.344 ± 0.104	0.323 ± 0.312	18.87 ± 9.35	158.67 ± 6.65
VC	-0.828 ± 0.128	-0.442 ± 0.238	-0.345 ± 0.331	-20.18 ± 2.98	208.11 ± 16.45
MX1	-0.906 ± 0.125	-0.415 ± 0.273	-0.082 ± 0.082	-4.69 ± 9.76	204.59 ± 17.23
MX2	-0.870 ± 0.130	-0.479 ± 0.235	-0.118 ± 0.118	-6.79 ± 8.41	208.83 ± 15.50
MX3	-0.827 ± 0.134	-0.541 ± 0.204	-0.154 ± 0.152	-8.84 ± 7.57	213.21 ± 14.12
RH08	-0.990 ± 0.002	0.131 ± 0.014	0.061 ± 0.061	3.52 ± 0.54	172.48 ± 0.84
RH09	-0.975 ± 0.015	0.199 ± 0.068	0.095 ± 0.095	5.45 ± 4.02	168.47 ± 3.99
RH10	-0.979 ± 0.014	0.182 ± 0.068	0.095 ± 0.095	5.45 ± 4.02	169.47 ± 3.99
Average	-0.907	-0.128	-0.015	-0.901	187.979
Median	-0.881	0.131	0.061	3.523	204.594
Deviation	0.067	0.372	0.203	11.802	22.600

Key shock parameters (About, Top)

Method	ThetaBn	Shock Speed	Compression
MC	37.5 ± 2.5	428.3 ± 340.0	1.17 ± 0.16
VC	77.9 ± 1.9	524.3 ± 601.6	1.17 ± 0.16
MX1	62.2 ± 2.0	548.7 ± 582.5	1.17 ± 0.16
MX2	65.5 ± 2.1	534.9 ± 583.4	1.17 ± 0.16
MX3	69.0 ± 2.2	523.3 ± 580.1	1.17 ± 0.16
RH08	49.9 ± 1.9	549.8 ± 492.2	1.17 ± 0.16
RH09	48.4 ± 2.0	527.2 ± 464.8	1.17 ± 0.16
RH10	48.3 ± 2.0	532.1 ± 469.8	1.17 ± 0.16
Average	57.3	521.1	1.17
Median	62.2	532.1	1.17
Deviation	13.4	38.8	0.00

Upstream wave speeds and mach numbers (About, Top)

Method	dV	Slow	Intermediate	Fast	Slow Mach	Fast Mach
MC	82.9 ± 0.8	13.1 ± 0.3	48.2 ± 1.8	61.6 ± 2.2	6.33 ± 0.15	1.35 ± 0.05
VC	187.0 ± 0.7	3.4 ± 0.1	12.7 ± 0.5	62.9 ± 2.2	55.42 ± 1.04	2.98 ± 0.10
MX1	182.6 ± 0.8	7.6 ± 0.2	28.3 ± 1.1	62.5 ± 2.2	24.07 ± 0.49	2.92 ± 0.10
MX2	182.3 ± 0.8	6.7 ± 0.1	25.2 ± 1.0	62.6 ± 2.2	27.12 ± 0.54	2.92 ± 0.10
MX3	187.0 ± 0.9	5.8 ± 0.1	21.8 ± 0.8	62.7 ± 2.2	32.16 ± 0.64	2.99 ± 0.10
RH8	157.0 ± 0.7	10.5 ± 0.2	39.1 ± 1.5	62.1 ± 2.2	14.90 ± 0.31	2.53 ± 0.09
RH9	141.0 ± 0.7	10.9 ± 0.2	40.3 ± 1.5	62.0 ± 2.2	12.97 ± 0.27	2.28 ± 0.08
RH10	144.4 ± 0.7	10.9 ± 0.2	40.4 ± 1.5	62.0 ± 2.2	13.26 ± 0.28	2.33 ± 0.08
Average	158.0	8.6	32.0	62.3	23.3	2.5
Median	182.3	10.5	39.1	62.5	24.1	2.9
Deviation	35.8	3.3	11.9	0.4	15.5	0.6

Downstream wave speeds and mach numbers (About, Top)

Method	dV	Slow	Intermediate	Fast	Slow Mach	Fast Mach
MC	66.0 ± 7.5	17.0 ± 2.0	70.6 ± 5.6	90.0 ± 6.8	3.91 ± 0.43	0.74 ± 0.12
VC	149.6 ± 3.9	4.4 ± 0.5	18.6 ± 1.5	91.5 ± 6.3	34.51 ± 4.12	1.64 ± 0.11
MX1	146.8 ± 3.5	9.9 ± 1.1	41.5 ± 3.3	91.1 ± 6.4	15.07 ± 1.76	1.62 ± 0.11
MX2	146.1 ± 3.7	8.7 ± 1.0	36.9 ± 2.9	91.2 ± 6.4	16.92 ± 2.03	1.61 ± 0.11
MX3	150.6 ± 4.1	7.6 ± 0.8	31.9 ± 2.5	91.3 ± 6.4	20.17 ± 2.47	1.66 ± 0.11
RH8	129.7 ± 6.2	13.7 ± 1.6	57.3 ± 4.6	90.6 ± 6.6	9.58 ± 0.96	1.44 ± 0.15
RH9	115.7 ± 6.7	14.1 ± 1.6	59.0 ± 4.7	90.5 ± 6.6	8.28 ± 0.82	1.29 ± 0.14
RH10	118.8 ± 6.5	14.1 ± 1.6	59.2 ± 4.7	90.5 ± 6.6	8.48 ± 0.84	1.32 ± 0.14
Average	127.9	11.2	46.9	90.8	14.6	1.4
Median	146.1	13.7	57.3	91.1	15.1	1.6
Deviation	28.7	4.2	17.4	0.5	9.6	0.3

Survey interval (About, Top)

Key plasma parameters

Velocity

Magnetic Field

Shock Speed (About, Top)

Theta Bn (About, Top)