Database: dscovr_data
Event ID: 20172502228
Observation time: 09/07/2017 250.93679 2228 [UT]
|
|
General
Information (About, Top)
| Year |
2017 |
| Fractional day of year |
250.936794 |
| Arrival time of shock [seconds of day] |
80939.0 ± 60.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
238.022 |
| Y GSE location of spacecraft [Re] |
-38.611 |
| Z GSE location of spacecraft [Re] |
-10.024 |
| Upstream plasma points selected for analysis |
0010 |
| Upstream field points selected for analysis |
0010 |
| Downstream plasma points selected for analysis |
0008
|
| Downstream field points selected for analysis |
0008 |
| Minimum chisq/dof for RH8,RH9,RH10 |
7.10, 29.27, 30.11 |
Event added to database
|
Wed Oct 25 11:37:03 2017
|
Event last processed
|
Wed Oct 25 12:06:23 2017
|
Method selected
|
MX3
|
Propagation delay to Earth [minutes]
|
27.659 ± 5.860
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-472.9 ± 4.3 |
-683.0 ± 17.4 |
| Vy GSE [km/s] |
-24.1 ± 4.1 |
97.5 ± 21.9 |
| Vz GSE [km/s] |
-3.8 ± 4.4 |
-21.6 ± 11.0 |
| Wi [km/s] |
24.8 ± 3.2 |
66.2 ± 6.6 |
| We [km/s] |
785.3 ± 101.5 |
2093.2 ± 208.6 |
| Ni [n/cc] |
2.6 ± 0.2 |
4.5 ± 0.3 |
| Bx GSE [nT] |
-1.1 ± 0.8 |
8.8 ± 2.1 |
| By GSE [nT] |
6.2 ± 0.7 |
11.3 ± 2.2 |
| Bz GSE [nT] |
-8.0 ± 0.5 |
-23.8 ± 1.4 |
Plasma Beta
|
0.033 ± 0.035
|
0.054 ± 0.058
|
Sound Speed [km/s]
|
32.06 ± 4.14
|
85.45 ± 8.52
|
Alfven Speed [km/s]
|
137.49 ± 6.27
|
288.83 ± 19.20
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.741 ± 0.128 |
0.614 ± 0.154 |
-0.273 ± 0.266 |
-15.83 ± 6.36 |
140.35 ± 11.79 |
| VC |
-0.865 ± 0.029 |
0.497 ± 0.050 |
-0.071 ± 0.071 |
-4.07 ± 2.35 |
150.12 ± 3.34 |
| MX1 |
-0.757 ± 0.056 |
0.590 ± 0.070 |
-0.281 ± 0.273 |
-16.32 ± 5.11 |
142.09 ± 5.13 |
| MX2 |
-0.762 ± 0.052 |
0.583 ± 0.064 |
-0.283 ± 0.275 |
-16.46 ± 5.27 |
142.57 ± 4.64 |
| MX3 |
-0.764 ± 0.051 |
0.579 ± 0.063 |
-0.284 ± 0.276 |
-16.52 ± 5.39 |
142.81 ± 4.58 |
| RH08 |
-0.398 ± 0.008 |
-0.771 ± 0.005 |
-0.497 ± 0.451 |
-29.82 ± 0.43 |
242.67 ± 0.58 |
| RH09 |
-0.398 ± 0.065 |
-0.771 ± 0.045 |
-0.497 ± 0.451 |
-29.82 ± 4.03 |
242.67 ± 4.65 |
| RH10 |
-0.398 ± 0.065 |
-0.771 ± 0.045 |
-0.497 ± 0.451 |
-29.82 ± 4.03 |
242.67 ± 4.65 |
| Average |
-0.635 |
0.069 |
-0.335 |
-19.830 |
180.746 |
| Median |
-0.741 |
0.579 |
-0.283 |
-16.455 |
150.117 |
| Deviation |
0.200 |
0.696 |
0.152 |
9.244 |
51.361 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
48.2 ± 4.0 |
902.3 ± 14.1 |
1.67 ± 0.12 |
| VC |
63.2 ± 4.2 |
982.6 ± 13.9 |
1.67 ± 0.12 |
| MX1 |
48.7 ± 4.1 |
911.8 ± 14.1 |
1.67 ± 0.12 |
| MX2 |
48.8 ± 4.1 |
914.3 ± 14.1 |
1.67 ± 0.12 |
| MX3 |
48.9 ± 4.1 |
915.5 ± 14.1 |
1.67 ± 0.12 |
| RH08 |
87.8 ± 4.7 |
204.3 ± 3.5 |
1.67 ± 0.12 |
| RH09 |
87.8 ± 4.7 |
204.3 ± 3.5 |
1.67 ± 0.12 |
| RH10 |
87.8 ± 4.7 |
204.3 ± 30.8 |
1.67 ± 0.12 |
| Average |
65.1 |
654.9 |
1.67 |
| Median |
63.2 |
911.8 |
1.67 |
| Deviation |
19.4 |
374.0 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
565.8 ± 3.9 |
21.0 ± 2.6 |
91.7 ± 4.2 |
139.6 ± 6.4 |
27.28 ± 3.52 |
4.06 ± 0.18 |
| VC |
585.3 ± 4.4 |
14.1 ± 1.8 |
62.0 ± 2.8 |
140.5 ± 6.5 |
41.97 ± 5.36 |
4.17 ± 0.19 |
| MX1 |
566.9 ± 3.9 |
20.8 ± 2.6 |
90.8 ± 4.1 |
139.7 ± 6.4 |
27.62 ± 3.57 |
4.07 ± 0.19 |
| MX2 |
567.1 ± 4.0 |
20.8 ± 2.6 |
90.5 ± 4.1 |
139.7 ± 6.4 |
27.71 ± 3.58 |
4.07 ± 0.19 |
| MX3 |
567.2 ± 4.0 |
20.7 ± 2.6 |
90.4 ± 4.1 |
139.7 ± 6.4 |
27.75 ± 3.59 |
4.07 ± 0.19 |
| RH8 |
-4.5 ± 5.5 |
1.2 ± 0.2 |
5.4 ± 0.2 |
141.2 ± 6.5 |
-3.39 ± 4.22 |
-0.03 ± 0.04 |
| RH9 |
-4.5 ± 5.5 |
1.2 ± 0.2 |
5.4 ± 0.2 |
141.2 ± 6.5 |
-3.39 ± 4.22 |
-0.03 ± 0.04 |
| RH10 |
-4.5 ± 5.5 |
1.2 ± 0.2 |
5.4 ± 0.2 |
141.2 ± 6.5 |
-3.39 ± 4.22 |
-0.03 ± 0.04 |
| Average |
354.8 |
12.6 |
55.2 |
140.3 |
17.8 |
2.5 |
| Median |
566.9 |
20.7 |
90.4 |
140.5 |
27.6 |
4.1 |
| Deviation |
297.6 |
9.7 |
42.4 |
0.8 |
18.2 |
2.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
330.6 ± 26.8 |
55.5 ± 5.2 |
192.6 ± 12.8 |
296.2 ± 18.4 |
6.01 ± 0.89 |
1.12 ± 0.14 |
| VC |
341.9 ± 24.8 |
37.2 ± 3.4 |
130.3 ± 8.7 |
299.0 ± 18.2 |
9.28 ± 1.30 |
1.15 ± 0.14 |
| MX1 |
331.1 ± 26.6 |
55.0 ± 5.1 |
190.7 ± 12.7 |
296.3 ± 18.4 |
6.09 ± 0.89 |
1.12 ± 0.14 |
| MX2 |
331.1 ± 26.6 |
54.8 ± 5.1 |
190.1 ± 12.6 |
296.3 ± 18.4 |
6.10 ± 0.90 |
1.12 ± 0.14 |
| MX3 |
331.2 ± 26.6 |
54.7 ± 5.1 |
189.8 ± 12.6 |
296.3 ± 18.4 |
6.11 ± 0.90 |
1.12 ± 0.14 |
| RH8 |
-3.3 ± 13.1 |
3.2 ± 0.3 |
11.3 ± 0.8 |
301.4 ± 18.1 |
-1.16 ± 4.02 |
-0.01 ± 0.04 |
| RH9 |
-3.3 ± 13.1 |
3.2 ± 0.3 |
11.3 ± 0.8 |
301.4 ± 18.1 |
-1.16 ± 4.02 |
-0.01 ± 0.04 |
| RH10 |
-3.3 ± 13.1 |
3.2 ± 0.3 |
11.3 ± 0.8 |
301.4 ± 18.1 |
-1.16 ± 4.02 |
-0.01 ± 0.04 |
| Average |
207.0 |
33.4 |
115.9 |
298.5 |
3.8 |
0.7 |
| Median |
331.1 |
54.7 |
189.8 |
299.0 |
6.1 |
1.1 |
| Deviation |
174.2 |
25.7 |
89.0 |
2.5 |
4.2 |
0.6 |
Survey interval (About, Top)
Selected
data (About, Top)
|
Key plasma parameters
|
Velocity
|
Magnetic Field
|
Simple
Methods
(About, Top)
Rankine Chi^2
Contour (About, Top)
Shock
Speed (About, Top)
Theta Bn (About, Top)
Mach Numbers (About, Top)
Page updated Mon Apr 13 08:55:21 2009
Michael L Stevens
(mstevens@cfa.harvard.edu)
| 
