MIT Space Plasma Group Interplanetary Shock Analysis Pages Database: Wind Shock Analysis Event ID: 19981231702 05/03/1998 123.71006 1702 [UT]

General Information (About, Top)

Year	1998
Fractional day of year	123.710060
Arrival time of shock [seconds of day]	61349.2 ± 60.0
Shock type	FF
Electron data availability	0
X GSE location of spacecraft [Re]	214.628
Y GSE location of spacecraft [Re]	6.192
Z GSE location of spacecraft [Re]	26.870
Upstream plasma points selected for analysis	0008
Upstream field points selected for analysis	0260
Downstream plasma points selected for analysis	0009
Downstream field points selected for analysis	0287
Minimum chisq/dof for RH8,RH9,RH10	6.97, 12.21, 12.48
Event added to database	Sat Mar 12 17:53:05 2005
Event last processed	Sun Mar 13 11:19:24 2005
Method selected	RH08
Propagation delay to Earth [minutes]	44.451 ± 1.521

Asymptotic plasma parameters (About, Top)

Parameter	Upstream	Downstream
Vx GSE [km/s]	-432.8 ± 2.5	-477.7 ± 4.8
Vy GSE [km/s]	9.7 ± 1.8	32.8 ± 3.0
Vz GSE [km/s]	-4.9 ± 3.9	-37.9 ± 2.4
Wi [km/s]	10.8 ± 0.7	32.3 ± 2.6
We [km/s]	342.0 ± 22.7	1022.7 ± 82.6
Ni [n/cc]	3.8 ± 0.4	12.0 ± 1.5
Bx GSE [nT]	2.3 ± 0.1	3.1 ± 0.5
By GSE [nT]	-2.1 ± 0.3	-4.3 ± 0.7
Bz GSE [nT]	-1.6 ± 0.2	-5.0 ± 0.4
Plasma Beta	0.073 ± 0.075	0.484 ± 0.482
Sound Speed [km/s]	13.96 ± 0.93	41.75 ± 3.37
Alfven Speed [km/s]	40.11 ± 1.86	46.54 ± 3.62

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

Method	Nx	Ny	Nz	Theta [degrees]	Phi [degrees]
MC	-0.892 ± 0.122	0.330 ± 0.299	-0.308 ± 0.298	-17.92 ± 10.25	159.70 ± 19.19
VC	-0.744 ± 0.048	0.387 ± 0.074	-0.544 ± 0.483	-32.99 ± 3.65	152.55 ± 5.53
MX1	-0.768 ± 0.062	0.437 ± 0.067	-0.468 ± 0.430	-27.91 ± 7.20	150.37 ± 4.51
MX2	-0.769 ± 0.059	0.435 ± 0.066	-0.469 ± 0.431	-27.97 ± 6.67	150.50 ± 4.50
MX3	-0.769 ± 0.058	0.434 ± 0.070	-0.470 ± 0.432	-28.02 ± 6.35	150.55 ± 4.87
RH08	-0.972 ± 0.003	0.111 ± 0.014	-0.207 ± 0.204	-11.93 ± 0.71	173.48 ± 0.82
RH09	-0.948 ± 0.022	0.193 ± 0.070	-0.251 ± 0.246	-14.56 ± 3.99	168.47 ± 4.20
RH10	-0.948 ± 0.022	0.193 ± 0.070	-0.251 ± 0.246	-14.56 ± 3.99	168.47 ± 4.20
Average	-0.851	0.315	-0.371	-21.984	159.261
Median	-0.769	0.387	-0.308	-17.924	159.696
Deviation	0.098	0.131	0.130	8.074	9.626

Key shock parameters (About, Top)

Method	ThetaBn	Shock Speed	Compression
MC	49.7 ± 3.4	473.9 ± 11.2	3.21 ± 0.64
VC	61.4 ± 4.2	415.7 ± 10.7	3.21 ± 0.64
MX1	56.0 ± 4.3	425.7 ± 10.8	3.21 ± 0.64
MX2	56.1 ± 4.3	426.0 ± 10.8	3.21 ± 0.64
MX3	56.2 ± 4.3	426.0 ± 10.8	3.21 ± 0.64
RH08	52.3 ± 2.0	499.6 ± 11.1	3.21 ± 0.64
RH09	51.2 ± 2.5	493.4 ± 11.2	3.21 ± 0.64
RH10	51.2 ± 2.5	493.4 ± 11.2	3.21 ± 0.64
Average	54.3	456.7	3.21
Median	56.0	473.9	3.21
Deviation	3.9	36.6	0.00

Upstream wave speeds and mach numbers (About, Top)

Method	dV	Slow	Intermediate	Fast	Slow Mach	Fast Mach
MC	83.0 ± 2.8	8.7 ± 0.6	26.0 ± 1.2	41.6 ± 1.9	9.56 ± 0.66	2.00 ± 0.10
VC	87.2 ± 3.2	6.4 ± 0.4	19.2 ± 0.9	42.0 ± 1.9	13.70 ± 0.89	2.08 ± 0.11
MX1	86.7 ± 3.0	7.5 ± 0.5	22.4 ± 1.0	41.8 ± 1.9	11.63 ± 0.77	2.08 ± 0.11
MX2	86.8 ± 3.0	7.5 ± 0.5	22.4 ± 1.0	41.8 ± 1.9	11.66 ± 0.77	2.08 ± 0.11
MX3	86.8 ± 3.0	7.5 ± 0.5	22.3 ± 1.0	41.8 ± 1.9	11.68 ± 0.77	2.08 ± 0.11
RH8	76.8 ± 2.9	8.2 ± 0.5	24.5 ± 1.1	41.7 ± 1.9	9.38 ± 0.67	1.85 ± 0.09
RH9	79.9 ± 2.9	8.4 ± 0.5	25.1 ± 1.2	41.6 ± 1.9	9.52 ± 0.67	1.92 ± 0.10
RH10	79.9 ± 2.9	8.4 ± 0.5	25.1 ± 1.2	41.6 ± 1.9	9.52 ± 0.67	1.92 ± 0.10
Average	83.4	7.8	23.4	41.7	10.8	2.0
Median	86.7	8.2	24.5	41.8	11.6	2.1
Deviation	4.1	0.8	2.2	0.1	1.6	0.1

Downstream wave speeds and mach numbers (About, Top)

Method	dV	Slow	Intermediate	Fast	Slow Mach	Fast Mach
MC	25.1 ± 3.8	21.4 ± 1.7	30.1 ± 2.3	58.8 ± 4.5	1.18 ± 0.20	0.43 ± 0.07
VC	26.8 ± 3.2	15.3 ± 1.2	22.3 ± 1.7	60.6 ± 4.6	1.76 ± 0.25	0.44 ± 0.06
MX1	26.7 ± 3.2	18.1 ± 1.4	26.0 ± 2.0	59.8 ± 4.6	1.48 ± 0.22	0.45 ± 0.06
MX2	26.7 ± 3.2	18.1 ± 1.4	25.9 ± 2.0	59.9 ± 4.6	1.48 ± 0.22	0.45 ± 0.06
MX3	26.7 ± 3.2	18.1 ± 1.4	25.9 ± 2.0	59.9 ± 4.6	1.49 ± 0.22	0.45 ± 0.06
RH8	23.7 ± 4.4	20.1 ± 1.5	28.5 ± 2.2	59.2 ± 4.5	1.19 ± 0.23	0.40 ± 0.08
RH9	24.5 ± 4.2	20.6 ± 1.6	29.1 ± 2.3	59.0 ± 4.5	1.19 ± 0.22	0.42 ± 0.08
RH10	24.5 ± 4.2	20.6 ± 1.6	29.1 ± 2.3	59.0 ± 4.5	1.19 ± 0.22	0.42 ± 0.08
Average	25.6	19.0	27.1	59.5	1.4	0.4
Median	26.7	20.1	28.5	59.8	1.5	0.4
Deviation	1.3	2.0	2.6	0.6	0.2	0.0

Survey interval (About, Top)

Key plasma parameters

Velocity

Magnetic Field

Shock Speed (About, Top)

Theta Bn (About, Top)